diff --git a/.github/workflows/cd-chienlv.yml b/.github/workflows/cd-chienlv.yml
new file mode 100644
index 000000000..d53833445
--- /dev/null
+++ b/.github/workflows/cd-chienlv.yml
@@ -0,0 +1,36 @@
+name: Build Dockerfile and push
+
+on:
+  push:
+    tags:
+      - v*
+
+jobs:
+  docker:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      
+      - name: Setup Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push app image
+        uses: docker/build-push-action@v4
+        with:
+          context: 1. Containerization/Le Van Chien/app/
+          push: true
+          tags: ${{ secrets.DOCKERHUB_USERNAME }}/app:${{ github.ref_name }}
+
+      - name: Build and push web image
+        uses: docker/build-push-action@v4
+        with:
+          context: 1. Containerization/Le Van Chien/nginx/
+          push: true
+          tags: ${{ secrets.DOCKERHUB_USERNAME }}/web:${{ github.ref_name }}
diff --git a/.github/workflows/ci-chienlv.yml b/.github/workflows/ci-chienlv.yml
new file mode 100644
index 000000000..2fd58f0c6
--- /dev/null
+++ b/.github/workflows/ci-chienlv.yml
@@ -0,0 +1,30 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - midterm
+  pull_request:
+    branches:
+      - midterm
+ 
+jobs:
+  test:
+    runs-on: ubuntu-20.04
+
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v3
+
+      - name: setup Python
+        uses: actions/setup-python@v3
+        with:
+          python-version: 3.8
+          
+      - name: install dependencies
+        run: |
+                pip install --upgrade pip
+                pip install -r 1.\ Containerization/Le\ Van\ Chien/app/tests/test_requirements.txt
+      - name: run tests
+        working-directory: 1. Containerization/Le Van Chien/app
+        run: pytest
diff --git a/1. Containerization/Le Van Chien/.gitignore b/1. Containerization/Le Van Chien/.gitignore
index f7655e0fd..8da8a8d99 100644
--- a/1. Containerization/Le Van Chien/.gitignore	
+++ b/1. Containerization/Le Van Chien/.gitignore	
@@ -2,5 +2,4 @@
 /env
 db/*
 !db/.gitkeep
-ansible/collections/ansible_collections/*
-!ansible/collections/ansible_collections/.gitkeep
+/app/*/__pycache__
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/ansible/roles/api/defaults/main.yaml b/1. Containerization/Le Van Chien/ansible/roles/api/defaults/main.yaml
deleted file mode 100644
index f1cc91684..000000000
--- a/1. Containerization/Le Van Chien/ansible/roles/api/defaults/main.yaml	
+++ /dev/null
@@ -1,16 +0,0 @@
-user: lechiennn
-source_folder: ../app
-dest_folder: "/home/{{ user }}/test/"
-
-image_name: api
-image_state: present
-resources_path: "{{ dest_folder }}/app"
-
-container_name: ap
-ports:
-  - "5000:5000"
-container_state: started
-volumes:
-  - "{{ resources_path }}:/app"
-
-network_name: net
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/ansible/roles/common/tasks/setup_ubuntu.yaml b/1. Containerization/Le Van Chien/ansible/roles/common/tasks/setup_ubuntu.yaml
deleted file mode 100644
index 8a8917add..000000000
--- a/1. Containerization/Le Van Chien/ansible/roles/common/tasks/setup_ubuntu.yaml	
+++ /dev/null
@@ -1,85 +0,0 @@
----
-- name: Ensure old versions of Docker are not installed.
-  package:
-    name:
-      - docker
-      - docker-engine
-    state: absent
-
-- name: Ensure dependencies are installed.
-  apt:
-    name:
-      - apt-transport-https
-      - ca-certificates
-    state: present
-
-
-# - name: Ensure additional dependencies are installed (on Ubuntu < 20.04 and any other systems).
-#   apt:
-#     name: gnupg2
-#     state: present
-#   when: ansible_distribution != 'Ubuntu' or ansible_distribution_version is version('20.04', '<')
-
-- name: Ensure additional dependencies are installed (on Ubuntu >= 20.04).
-  apt:
-    name: gnupg
-    state: present
-
-- name: Add Docker apt key.
-  ansible.builtin.get_url:
-    url: "https://download.docker.com/linux/{{ ansible_distribution | lower }}/gpg"
-    dest: /etc/apt/trusted.gpg.d/docker.asc
-    mode: '0644'
-    force: true
-  ignore_errors: true
-  
-
-# - name: Ensure curl is present (on older systems without SNI).
-#   package: name=curl state=present
-#   when: add_repository_key is failed and docker_add_repo | bool
-
-# - name: Add Docker apt key (alternative for older systems without SNI).
-#   shell: >
-#     curl -sSL {{ docker_apt_gpg_key }} | apt-key add -
-#   when: add_repository_key is failed and docker_add_repo | bool
-
-- name: Add Docker repository.
-  apt_repository:
-    repo: "{{ docker_apt_repository }}"
-    state: present
-    update_cache: true
-
-# - name: Install required package
-#   package:
-#     name:
-#       - ca-certificates
-#       - curl
-#       - gnupg
-#     state: present
-#     update_cache: true
-
-# - name: Add Docker apt key.
-#   get_url:
-#     url: https://download.docker.com/linux/{{ ansible_distribution | lower }}/gpg
-#     dest: /etc/apt/trusted.gpg.d/docker.asc
-#     mode: '0644'
-#     force: true
-#   register: add_repository_key
-#   ignore_errors: false
-
-# - name: Add Docker repository.
-#   apt_repository:
-#     repo: "deb [arch={{ ansible_architecture }}] https://download.docker.com/linux/{{ ansible_distribution | lower }} {{ ansible_distribution_release }} stable"
-#     state: present
-#     update_cache: true
-
-####
-# - name: Add GPG key
-#   apt_key: 
-#     url: https://download.docker.com/linux/{{ ansible_distribution | lower }}/gpg
-#     state: present
-
-# - name: Add repository
-#   apt_repository:
-#     repo: "deb [arch={{ ansible_architecture }}] https://download.docker.com/linux/{{ ansible_distribution | lower }} {{ ansible_distribution_release }} stable"
-#     state: present
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/ansible/roles/web/defaults/main.yaml b/1. Containerization/Le Van Chien/ansible/roles/web/defaults/main.yaml
deleted file mode 100644
index a3b76f247..000000000
--- a/1. Containerization/Le Van Chien/ansible/roles/web/defaults/main.yaml	
+++ /dev/null
@@ -1,12 +0,0 @@
-user: lechiennn
-source_folder: ../nginx
-dest_folder: "/home/{{ user }}/test/"
-
-image_name: nginx:1.22.0-alpine
-container_name: web
-ports:
-  - "8080:80"
-container_state: started
-volumes:
-  - "{{ dest_folder }}/nginx/nginx.conf:/etc/nginx/nginx.conf"
-  - "{{ dest_folder }}/nginx/static:/var/www/html"
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/ansible/roles/web/tasks/main.yaml b/1. Containerization/Le Van Chien/ansible/roles/web/tasks/main.yaml
deleted file mode 100644
index 644acc9a8..000000000
--- a/1. Containerization/Le Van Chien/ansible/roles/web/tasks/main.yaml	
+++ /dev/null
@@ -1,13 +0,0 @@
-- name: copy resources from host
-  copy:
-    src: "{{ source_folder }}"
-    dest: "{{ dest_folder }}"
-    force: false
-  
-- name: run Docker container
-  community.docker.docker_container:
-    name: "{{ container_name }}"
-    image: "{{ image_name }}"
-    state: "{{ container_state }}"
-    ports: "{{ ports }}"
-    volumes: "{{ volumes }}"
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/app/.dockerignore b/1. Containerization/Le Van Chien/app/.dockerignore
new file mode 100644
index 000000000..2b6425147
--- /dev/null
+++ b/1. Containerization/Le Van Chien/app/.dockerignore	
@@ -0,0 +1,2 @@
+/tests
+/.pytest_cache
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/app/app.py b/1. Containerization/Le Van Chien/app/app.py
index 5925fab06..a9cc5c8b5 100644
--- a/1. Containerization/Le Van Chien/app/app.py	
+++ b/1. Containerization/Le Van Chien/app/app.py	
@@ -1,29 +1,59 @@
-from flask import Flask
-from pymongo import MongoClient
-from flask_cors import CORS, cross_origin
-import json
-from bson import json_util
+from project.api import create_app
+from project.database import create_db
 
-app = Flask(__name__)
-cors = CORS(app)
+db = create_db()
+app = create_app(db)
+if __name__ == '__main__':
+    app.run(debug=True, host='0.0.0.0', port=5000)
 
-client = MongoClient('mongodb://db:27017')
-client.drop_database('attendee')
-db = client.attendee
-if 'attendees' not in db.list_collection_names():
-    with open('data/attendees.json') as f:
-        data = json.load(f)
-    db.attendees.insert_many(data)
+# from flask import Flask, request
+# from pymongo import MongoClient
+# from flask_cors import CORS, cross_origin
+# import json
+# from bson import json_util
 
-@app.route('/people/', methods = ['GET'])
-def getAll():
-    attendees = json_util.dumps(db.attendees.find({}))
-    return attendees
+# app = Flask(__name__)
+# cors = CORS(app, resources={r'/people/*': {'origins': '*'}})
 
-@app.route('/people/<int:num>', methods = ['GET'])
-def get(num):
-    return json_util.dumps(db.attendees.find({"no": num}))
+# client = MongoClient('mongodb://db:27017')
+# client.drop_database('attendee')
+# db = client.attendee
+# if 'attendees' not in db.list_collection_names():
+#     with open('data/attendees.json') as f:
+#         data = json.load(f)
+#     db.attendees.insert_many(data)
 
+# @app.route('/people/', methods = ['GET'])
+# def getAll():
+#     attendees = json_util.dumps(db.attendees.find({}))
+#     return attendees
 
-if __name__ == '__main__':
-    app.run(debug=True, host='0.0.0.0', port=5000)
+# @app.route('/people/<int:num>', methods = ['GET'])
+# def getByID(num):
+#     return json_util.dumps(db.attendees.find({"id": num}))
+
+# @app.route('/people/<string:username>', methods = ['GET'])
+# def getByUsername(username):
+#     return json_util.dumps(db.attendees.find({"username": username}))
+
+# @app.route('/people/delete/<string:username>', methods = ['DELETE'])
+# def delete(username):
+#     db.attendees.delete_one({'username': username})
+#     return json_util.dumps({'message': f'Resource with username {username} deleted'})
+
+
+# @app.route('/people/create/', methods = ['PUT'])
+# def create():
+#     data = request.get_json()
+#     db.attendees.insert_one(data)
+#     return json_util.dumps({'message': 'Resource with username {} created'.format(data['username'])})
+
+# @app.route('/people/update/<string:username>', methods = ['PUT'])
+# def update(username):
+#     data = request.get_json()
+#     db.attendees.update_one({'username':username}, data)
+#     return json_util.dumps({'message': 'Resource with username {} updated'.format(username)})
+
+
+# if __name__ == '__main__':
+#     app.run(debug=True, host='0.0.0.0', port=5000)
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/app/data/attendees.json b/1. Containerization/Le Van Chien/app/data/attendees.json
index 18e74e346..199ba9f10 100644
--- a/1. Containerization/Le Van Chien/app/data/attendees.json	
+++ b/1. Containerization/Le Van Chien/app/data/attendees.json	
@@ -1,282 +1,317 @@
 [
   {
-    "no": 1,
-    "name": "Bùi Minh Sơn",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "Đại học Công nghệ - Đại học Quốc gia Hà Nội",
-    "major": "Công nghệ thông tin"
-  },
-  {
-    "no": 2,
-    "name": "Đào Đại Hiệp",
-    "yob": 2001,
-    "sex": "Nam",
-    "school": "Đại học Bách khoa Hà Nội",
-    "major": "Điện tử viễn thông"
-  },
-  {
-    "no": 3,
-    "name": "Đỗ Anh Tú",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "Đại học Công nghệ - Đại học Quốc gia Hà Nội",
-    "major": "Mạng máy tính và truyền thông dữ liệu"
-  },
-  {
-    "no": 4,
-    "name": "Đỗ Bảo Hoàng",
-    "yob": 1997,
-    "sex": "Nam",
-    "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
-    "major": "An toàn thông tin"
-  },
-  {
-    "no": 5,
-    "name": "Hoàng Quốc Doanh",
-    "yob": 2001,
-    "sex": "Nam",
-    "school": "Đại Học Bách Khoa Hà Nội",
-    "major": "NULL"
-  },
-  {
-    "no": 6,
-    "name": "Le Minh Duc",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "Đại Học Bách Khoa Hà Nội",
-    "major": "Công nghệ thông tin ứng dụng phần mềm"
-  },
-  {
-    "no": 7,
-    "name": "Lê Phúc Lai",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "Đại Học Bách Khoa Hà Nội",
-    "major": "Kỹ thuật điện tử viễn thông"
-  },
-  {
-    "no": 8,
-    "name": "Lê Quang Anh",
-    "yob": 1997,
-    "sex": "Nam",
-    "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
-    "major": "An toàn thông tin"
-  },
-  {
-    "no": 9,
-    "name": "Lê Trọng Minh",
-    "yob": 2000,
-    "sex": "Nam",
-    "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
-    "major": "Kỹ thuật điều khiển và tự động hóa"
-  },
-  {
-    "no": 10,
-    "name": "Lê Tùng Lâm",
-    "yob": 1999,
-    "sex": "Nam",
-    "school": "Đại Học Bách Khoa Hà Nội",
-    "major": "Khoa học máy tính"
-  },
-  {
-    "no": 11,
-    "name": "Lê Văn Chiến",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "Đại học Công nghệ - Đại học Quốc gia Hà Nội",
-    "major": "Kỹ thuật hàng không vũ trụ"
-  },
-  {
-    "no": 12,
-    "name": "Linh Thi Nguyen",
-    "yob": 2002,
-    "sex": "Nữ",
-    "school": "Đại Học Bách Khoa Hà Nội",
-    "major": "ICT"
-  },
-  {
-    "no": 13,
-    "name": "Nguyễn Đại An",
-    "yob": 2023,
-    "sex": "Nam",
-    "school": "Đại Học Bách Khoa Hà Nội",
-    "major": "Khoa học máy tính"
-  },
-  {
-    "no": 14,
-    "name": "Nguyễn Đình Hoàng",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "Đại học Công nghệ - Đại học Quốc gia Hà Nội",
-    "major": "Công nghệ thông tin ứng dụng phần mềm"
-  },
-  {
-    "no": 15,
-    "name": "Nguyen Duc Vinh Data",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "Học viện Công nghệ Bưu chính Viễn thông",
-    "major": "NULL"
-  },
-  {
-    "no": 16,
-    "name": "Nguyễn Dương Long",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "ĐH Thuỷ lợi",
-    "major": "Công nghệ thông tin ứng dụng phần mềm"
-  },
-  {
-    "no": 17,
-    "name": "Nguyen Huu Thang",
-    "yob": 2000,
-    "sex": "Nam",
-    "school": "Đại Học Bách Khoa Hà Nội",
-    "major": "Khoa học máy tính"
-  },
-  {
-    "no": 18,
-    "name": "Nguyễn Mạnh Cường",
-    "yob": 1997,
-    "sex": "Nam",
-    "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
-    "major": "Điện tử"
-  },
-  {
-    "no": 19,
-    "name": "Nguyễn Mạnh Đức",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "Học viện Kỹ thuật mật mã",
-    "major": "An toàn thông tin"
-  },
-  {
-    "no": 20,
-    "name": "Nguyễn Ngọc Chung",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "Học viên Công nghệ Bưu chính Viễn Thông HCM",
-    "major": "NULL"
-  },
-  {
-    "no": 21,
-    "name": "Nguyễn Tuấn Anh",
-    "yob": 1997,
-    "sex": "Nam",
-    "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
-    "major": "An toàn thông tin"
-  },
-  {
-    "no": 22,
-    "name": "Nguyễn Văn Quang",
-    "yob": 1997,
-    "sex": "Nam",
-    "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
-    "major": "An toàn thông tin"
-  },
-  {
-    "no": 23,
-    "name": "Ninh Chí Hướng",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "Học viện Công nghệ Bưu chính viễn thông",
-    "major": "An toàn thông tin"
-  },
-  {
-    "no": 24,
-    "name": "Ninh Văn Nghĩa",
-    "yob": 2001,
-    "sex": "Nam",
-    "school": "Đại Học Bách Khoa Hà Nội",
-    "major": "Khoa học máy tính"
-  },
-  {
-    "no": 25,
-    "name": "Phạm Anh Đức",
-    "yob": 2001,
-    "sex": "Nam",
-    "school": "Đại học Bách Khoa Hà Nội",
-    "major": "Toán ứng dụng và tin học"
-  },
-  {
-    "no": 26,
-    "name": "Phạm Duy Cương",
-    "yob": 1997,
-    "sex": "Nam",
-    "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
-    "major": "Công nghệ điện tử"
-  },
-  {
-    "no": 27,
-    "name": "Phạm Hồng Thanh",
-    "yob": 1998,
-    "sex": "Nam",
-    "school": "Swinburne University",
-    "major": "Phát triển phần mềm"
-  },
-  {
-    "no": 28,
-    "name": "Phạm Thị Khánh Linh",
-    "yob": 2002,
-    "sex": "Nữ",
-    "school": "Đại học Công nghệ - Đại học Quốc gia Hà Nội",
-    "major": "Mạng máy tính và truyền thông dữ liệu"
-  },
-  {
-    "no": 29,
-    "name": "Phạm Văn Tới",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "Học viện Công nghệ Bưu chính viễn thông",
-    "major": "Công nghệ thông tin ứng dụng phần mềm"
-  },
-  {
-    "no": 30,
-    "name": "Trần Đức Mạnh",
-    "yob": 1998,
-    "sex": "Nam",
-    "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
-    "major": "Bảo mật thông tin"
-  },
-  {
-    "no": 31,
-    "name": "Trần Mạnh Dũng",
-    "yob": 2001,
-    "sex": "Nam",
-    "school": "Học viện Công nghệ Bưu chính Viễn thông",
-    "major": "Điện tử viễn thông"
-  },
-  {
-    "no": 32,
-    "name": "Trần Minh Dương",
-    "yob": 2002,
-    "sex": "Nam",
-    "school": "Đại học Công nghệ - Đại học Quốc gia Hà Nội",
-    "major": "Mạng máy tính và truyền thông dữ liệu"
-  },
-  {
-    "no": 33,
-    "name": "Trần Xuân Phú",
-    "yob": 2001,
-    "sex": "Nam",
-    "school": "Trường Đại học Công nghệ thông tin - ĐHQG Tp.Hồ chí Minh",
-    "major": "Khoa học máy tính"
-  },
-  {
-    "no": 34,
-    "name": "Vũ Hoàng Long",
-    "yob": 2001,
-    "sex": "Nam",
-    "school": "Đại học Bách Khoa Hà Nội",
-    "major": "Khoa học máy tính"
-  },
-  {
-    "no": 35,
-    "name": "Vũ Minh Hiếu",
-    "yob": 2000,
-    "sex": "Nam",
-    "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
-    "major": "Kỹ thuật phần mềm"
+   "id": 1,
+   "name": "Bùi Minh Sơn",
+   "username": "sonbm",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "Đại học Công nghệ - Đại học Quốc gia Hà Nội",
+   "major": "Công nghệ thông tin"
+  },
+  {
+   "id": 2,
+   "name": "Đào Đại Hiệp",
+   "username": "hiepdd",
+   "yob": 2001,
+   "sex": "Nam",
+   "school": "Đại học Bách khoa Hà Nội",
+   "major": "Điện tử viễn thông"
+  },
+  {
+   "id": 3,
+   "name": "Đỗ Anh Tú",
+   "username": "tuda",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "Đại học Công nghệ - Đại học Quốc gia Hà Nội",
+   "major": "Mạng máy tính và truyền thông dữ liệu"
+  },
+  {
+   "id": 4,
+   "name": "Đỗ Bảo Hoàng",
+   "username": "hoangdb",
+   "yob": 1997,
+   "sex": "Nam",
+   "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
+   "major": "An toàn thông tin"
+  },
+  {
+   "id": 5,
+   "name": "Hoàng Quốc Doanh",
+   "username": "doanhhq",
+   "yob": 2001,
+   "sex": "Nam",
+   "school": "Đại Học Bách Khoa Hà Nội",
+   "major": "NULL"
+  },
+  {
+   "id": 6,
+   "name": "Lê Minh Đức",
+   "username": "duclm",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "Đại Học Bách Khoa Hà Nội",
+   "major": "Công nghệ thông tin ứng dụng phần mềm"
+  },
+  {
+   "id": 7,
+   "name": "Lê Phúc Lai",
+   "username": "lailp",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "Đại Học Bách Khoa Hà Nội",
+   "major": "Kỹ thuật điện tử viễn thông"
+  },
+  {
+   "id": 8,
+   "name": "Lê Quang Anh",
+   "username": "anhlq",
+   "yob": 1997,
+   "sex": "Nam",
+   "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
+   "major": "An toàn thông tin"
+  },
+  {
+   "id": 9,
+   "name": "Lê Trọng Minh",
+   "username": "minhlt",
+   "yob": 2000,
+   "sex": "Nam",
+   "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
+   "major": "Kỹ thuật điều khiển và tự động hóa"
+  },
+  {
+   "id": 10,
+   "name": "Lê Tùng Lâm",
+   "username": "lamlt",
+   "yob": 1999,
+   "sex": "Nam",
+   "school": "Đại Học Bách Khoa Hà Nội",
+   "major": "Khoa học máy tính"
+  },
+  {
+   "id": 11,
+   "name": "Lê Văn Chiến",
+   "username": "chienlv",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "Đại học Công nghệ - Đại học Quốc gia Hà Nội",
+   "major": "Kỹ thuật hàng không vũ trụ"
+  },
+  {
+   "id": 12,
+   "name": "Nguyễn Thị Linh",
+   "username": "linhnt",
+   "yob": 2002,
+   "sex": "Nữ",
+   "school": "Đại Học Bách Khoa Hà Nội",
+   "major": "ICT"
+  },
+  {
+   "id": 13,
+   "name": "Nguyễn Đại An",
+   "username": "annd",
+   "yob": 2023,
+   "sex": "Nam",
+   "school": "Đại Học Bách Khoa Hà Nội",
+   "major": "Khoa học máy tính"
+  },
+  {
+   "id": 14,
+   "name": "Nguyễn Đình Hoàng",
+   "username": "hoangnd",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "Đại học Công nghệ - Đại học Quốc gia Hà Nội",
+   "major": "Công nghệ thông tin ứng dụng phần mềm"
+  },
+  {
+   "id": 15,
+   "name": "Nguyễn Đức Vinh",
+   "username": "vinhnd",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "Học viện Công nghệ Bưu chính Viễn thông",
+   "major": "NULL"
+  },
+  {
+   "id": 16,
+   "name": "Nguyễn Dương Long",
+   "username": "longnd",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "ĐH Thuỷ lợi",
+   "major": "Công nghệ thông tin ứng dụng phần mềm"
+  },
+  {
+   "id": 17,
+   "name": "Nguyễn Hữu Thắng",
+   "username": "thangnh",
+   "yob": 2000,
+   "sex": "Nam",
+   "school": "Đại Học Bách Khoa Hà Nội",
+   "major": "Khoa học máy tính"
+  },
+  {
+   "id": 18,
+   "name": "Nguyễn Mạnh Cường",
+   "username": "cuongnm",
+   "yob": 1997,
+   "sex": "Nam",
+   "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
+   "major": "Điện tử"
+  },
+  {
+   "id": 19,
+   "name": "Nguyễn Mạnh Đức",
+   "username": "ducnm",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "Học viện Kỹ thuật mật mã",
+   "major": "An toàn thông tin"
+  },
+  {
+   "id": 20,
+   "name": "Nguyễn Ngọc Chung",
+   "username": "chungnn",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "Học viên Công nghệ Bưu chính Viễn Thông HCM",
+   "major": "NULL"
+  },
+  {
+   "id": 21,
+   "name": "Nguyễn Tuấn Anh",
+   "username": "anhnt",
+   "yob": 1997,
+   "sex": "Nam",
+   "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
+   "major": "An toàn thông tin"
+  },
+  {
+   "id": 22,
+   "name": "Nguyễn Văn Quang",
+   "username": "quangnv",
+   "yob": 1997,
+   "sex": "Nam",
+   "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
+   "major": "An toàn thông tin"
+  },
+  {
+   "id": 23,
+   "name": "Ninh Chí Hướng",
+   "username": "huongnc",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "Học viện Công nghệ Bưu chính viễn thông",
+   "major": "An toàn thông tin"
+  },
+  {
+   "id": 24,
+   "name": "Ninh Văn Nghĩa",
+   "username": "nghianv",
+   "yob": 2001,
+   "sex": "Nam",
+   "school": "Đại Học Bách Khoa Hà Nội",
+   "major": "Khoa học máy tính"
+  },
+  {
+   "id": 25,
+   "name": "Phạm Anh Đức",
+   "username": "ducpa",
+   "yob": 2001,
+   "sex": "Nam",
+   "school": "Đại học Bách Khoa Hà Nội",
+   "major": "Toán ứng dụng và tin học"
+  },
+  {
+   "id": 26,
+   "name": "Phạm Duy Cương",
+   "username": "cuongpd",
+   "yob": 1997,
+   "sex": "Nam",
+   "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
+   "major": "Công nghệ điện tử"
+  },
+  {
+   "id": 27,
+   "name": "Phạm Hồng Thanh",
+   "username": "thanhph",
+   "yob": 1998,
+   "sex": "Nam",
+   "school": "Swinburne University",
+   "major": "Phát triển phần mềm"
+  },
+  {
+   "id": 28,
+   "name": "Phạm Thị Khánh Linh",
+   "username": "linhptk",
+   "yob": 2002,
+   "sex": "Nữ",
+   "school": "Đại học Công nghệ - Đại học Quốc gia Hà Nội",
+   "major": "Mạng máy tính và truyền thông dữ liệu"
+  },
+  {
+   "id": 29,
+   "name": "Phạm Văn Tới",
+   "username": "toipv",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "Học viện Công nghệ Bưu chính viễn thông",
+   "major": "Công nghệ thông tin ứng dụng phần mềm"
+  },
+  {
+   "id": 30,
+   "name": "Trần Đức Mạnh",
+   "username": "manhtd",
+   "yob": 1998,
+   "sex": "Nam",
+   "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
+   "major": "Bảo mật thông tin"
+  },
+  {
+   "id": 31,
+   "name": "Trần Mạnh Dũng",
+   "username": "dungtm",
+   "yob": 2001,
+   "sex": "Nam",
+   "school": "Học viện Công nghệ Bưu chính Viễn thông",
+   "major": "Điện tử viễn thông"
+  },
+  {
+   "id": 32,
+   "name": "Trần Minh Dương",
+   "username": "duongtm",
+   "yob": 2002,
+   "sex": "Nam",
+   "school": "Đại học Công nghệ - Đại học Quốc gia Hà Nội",
+   "major": "Mạng máy tính và truyền thông dữ liệu"
+  },
+  {
+   "id": 33,
+   "name": "Trần Xuân Phú",
+   "username": "phutx",
+   "yob": 2001,
+   "sex": "Nam",
+   "school": "Trường Đại học Công nghệ thông tin - ĐHQG Tp.Hồ chí Minh",
+   "major": "Khoa học máy tính"
+  },
+  {
+   "id": 34,
+   "name": "Vũ Hoàng Long",
+   "username": "longvh",
+   "yob": 2001,
+   "sex": "Nam",
+   "school": "Đại học Bách Khoa Hà Nội",
+   "major": "Khoa học máy tính"
+  },
+  {
+   "id": 35,
+   "name": "Vũ Minh Hiếu",
+   "username": "hieuvm",
+   "yob": 2000,
+   "sex": "Nam",
+   "school": "Đại học CNTT, cơ khí & quang học St.Petersburg LB Nga",
+   "major": "Kỹ thuật phần mềm"
   }
-]
\ No newline at end of file
+ ]
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/ansible/collections/ansible_collections/.gitkeep b/1. Containerization/Le Van Chien/app/project/__init__.py
similarity index 100%
rename from 1. Containerization/Le Van Chien/ansible/collections/ansible_collections/.gitkeep
rename to 1. Containerization/Le Van Chien/app/project/__init__.py
diff --git a/1. Containerization/Le Van Chien/app/project/__pycache__/__init__.cpython-39.pyc b/1. Containerization/Le Van Chien/app/project/__pycache__/__init__.cpython-39.pyc
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new file mode 100644
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diff --git a/1. Containerization/Le Van Chien/app/project/__pycache__/database.cpython-39.pyc b/1. Containerization/Le Van Chien/app/project/__pycache__/database.cpython-39.pyc
new file mode 100644
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diff --git a/1. Containerization/Le Van Chien/app/project/api.py b/1. Containerization/Le Van Chien/app/project/api.py
new file mode 100644
index 000000000..ef6d44fb2
--- /dev/null
+++ b/1. Containerization/Le Van Chien/app/project/api.py	
@@ -0,0 +1,40 @@
+from flask import Flask, request
+from flask_cors import CORS, cross_origin
+from bson import json_util
+
+def create_app(db):
+    app = Flask('app')
+    cors = CORS(app)
+
+    @app.route('/people/', methods = ['GET'])
+    def getAll():
+        attendees = json_util.dumps(db.attendees.find({}))
+        return attendees
+
+    @app.route('/people/<int:num>', methods = ['GET'])
+    def getByID(num):
+        return json_util.dumps(db.attendees.find({"id": num}))
+
+    @app.route('/people/<string:username>', methods = ['GET'])
+    def getByUsername(username):
+        return json_util.dumps(db.attendees.find({"username": username}))
+
+    @app.route('/people/delete/<string:username>', methods = ['DELETE'])
+    def delete(username):
+        db.attendees.delete_one({'username': username})
+        return json_util.dumps({'message': f'Resource with username {username} deleted'})
+
+
+    @app.route('/people/create/', methods = ['PUT'])
+    def create():
+        data = request.get_json()
+        db.attendees.insert_one(data)
+        return json_util.dumps({'message': 'Resource with username {} created'.format(data['username'])})
+
+    @app.route('/people/update/<string:username>', methods = ['PUT'])
+    def update(username):
+        data = request.get_json()
+        db.attendees.update_one({'username':username}, {'$set': data})
+        return json_util.dumps({'message': 'Resource with username {} updated'.format(username)})
+    
+    return app
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/app/project/database.py b/1. Containerization/Le Van Chien/app/project/database.py
new file mode 100644
index 000000000..16f8a4d7c
--- /dev/null
+++ b/1. Containerization/Le Van Chien/app/project/database.py	
@@ -0,0 +1,13 @@
+from pymongo import MongoClient
+import json
+
+def create_db():
+    client = MongoClient('mongodb://db:27017')
+    client.drop_database('attendee')
+    db = client.attendee
+    if 'attendees' not in db.list_collection_names():
+        with open('data/attendees.json') as f:
+            data = json.load(f)
+        db.attendees.insert_many(data)
+
+    return db
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/app/tests/__init__.py b/1. Containerization/Le Van Chien/app/tests/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/1. Containerization/Le Van Chien/app/tests/__pycache__/__init__.cpython-38.pyc b/1. Containerization/Le Van Chien/app/tests/__pycache__/__init__.cpython-38.pyc
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new file mode 100644
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diff --git a/1. Containerization/Le Van Chien/app/tests/conftest.py b/1. Containerization/Le Van Chien/app/tests/conftest.py
new file mode 100644
index 000000000..5dc70c2f4
--- /dev/null
+++ b/1. Containerization/Le Van Chien/app/tests/conftest.py	
@@ -0,0 +1,12 @@
+import pytest
+import json
+from mongomock import MongoClient
+
+@pytest.fixture
+def db():
+    client = MongoClient()
+    db = client.attendee
+    with open('data/attendees.json') as f:
+        data = json.load(f)
+    db.attendees.insert_many(data)
+    yield db
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/app/tests/test_api.py b/1. Containerization/Le Van Chien/app/tests/test_api.py
new file mode 100644
index 000000000..20798462f
--- /dev/null
+++ b/1. Containerization/Le Van Chien/app/tests/test_api.py	
@@ -0,0 +1,126 @@
+import json
+from project.api import create_app
+
+GET_ALL = '/people/'
+GET_BY_USERNAME = '/people/chienlv'
+GET_BY_ID = '/people/11'
+PUT_NEW_DATA = 'people/create/'
+UPDATE_DATA = 'people/update/chienlv'
+DELETE_DATA = 'people/delete/chienlv'
+
+def test_getByUsername(db):
+    app = create_app(db)
+    response = app.test_client().get(GET_BY_USERNAME)
+    data = json.loads(response.data.decode('utf-8'))
+
+    assert len(data) == 1
+    assert data[0]['id'] == 11
+    assert response.status_code == 200
+
+def test_getAll(db):
+    app = create_app(db)
+    response =  app.test_client().get(GET_ALL)
+    data = json.loads(response.data.decode('utf-8'))
+
+    assert type(data) is list
+    assert type(data[0]) is dict
+    assert data[10]['id'] == 11
+    assert data[10] ['username'] == 'chienlv'
+    assert response.status_code == 200
+
+def test_getByID(db):
+    app = create_app(db)
+    response =  app.test_client().get(GET_BY_ID)
+    data = json.loads(response.data.decode('utf-8'))
+
+    assert type(data[0]) is dict
+    assert len(data) == 1
+    assert data[0]['username'] == 'chienlv'
+    assert response.status_code == 200
+
+def test_create(db):
+    app = create_app(db)
+    client = app.test_client()
+
+    def getAll(client):
+        response = client.get(GET_ALL)
+        data = json.loads(response.data.decode('utf-8'))
+        return data
+
+    dataBeforePUT = getAll(client)
+
+
+    newData = {
+        'id': 50,
+        'name': "Lorem Ipsum",
+        'username': 'li',
+        'yob': 2002,
+        'sex': 'nam',
+        'school': 'Vietnam National University',
+        'major': 'School of Aerospace Engineering'
+    }
+
+    headers = {
+        'Content-Type': 'application/json'
+    }
+
+    response = client.put(PUT_NEW_DATA, data=json.dumps(newData), headers=headers)
+
+
+    dataAfterPUT = getAll(client)
+
+    assert len(dataAfterPUT) == len(dataBeforePUT) + 1
+    assert dataAfterPUT[-1]['id'] == 50
+    assert dataAfterPUT[-1]['username'] == 'li'
+    assert response.status_code == 200
+
+def test_update(db):
+    app = create_app(db)
+    client = app.test_client()
+
+    def getOne(client):
+        response = client.get(GET_BY_USERNAME)
+        data = json.loads(response.data.decode('utf-8'))
+        return data
+
+    dataBeforePUT = getOne(client)
+
+
+    newData = {
+        'school': 'Vietnam National University',
+        'major': 'School of Aerospace Engineering'
+    }
+
+    headers = {
+        'Content-Type': 'application/json'
+    }
+
+    response = client.put(UPDATE_DATA, data=json.dumps(newData), headers=headers)
+
+
+    dataAfterPUT = getOne(client)
+
+    assert dataAfterPUT[0]['username'] == 'chienlv'
+    assert dataAfterPUT[0]['major'] == 'School of Aerospace Engineering'
+    assert response.status_code == 200
+
+
+def test_delete(db):
+    app = create_app(db)
+    client = app.test_client()
+
+    def getAll(client):
+        response = client.get(GET_ALL)
+        data = json.loads(response.data.decode('utf-8'))
+        return data
+
+    dataBeforePUT = getAll(client)
+
+
+    response = client.delete(DELETE_DATA)
+
+
+    dataAfterPUT = getAll(client)
+
+    assert len(dataAfterPUT) == len(dataBeforePUT) -1
+    assert response.status_code == 200
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/app/tests/test_requirements.txt b/1. Containerization/Le Van Chien/app/tests/test_requirements.txt
new file mode 100644
index 000000000..ece56fe24
--- /dev/null
+++ b/1. Containerization/Le Van Chien/app/tests/test_requirements.txt	
@@ -0,0 +1,3 @@
+pytest
+mongomock
+-r ../requirements.txt
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/docker-compose.yml b/1. Containerization/Le Van Chien/docker-compose.yml
index e37c4b6e0..f458bfe76 100644
--- a/1. Containerization/Le Van Chien/docker-compose.yml	
+++ b/1. Containerization/Le Van Chien/docker-compose.yml	
@@ -4,7 +4,8 @@ networks:
                 driver: bridge
 services:
         nginx:
-              image: nginx:1.22.0-alpine
+              build: ./nginx
+              container_name: web
               ports:
                       - "8080:80"
               depends_on:
@@ -16,6 +17,7 @@ services:
                       - net
         app:
                 build: ./app
+                container_name: app
                 depends_on: 
                         - db
                 networks:
@@ -28,6 +30,7 @@ services:
                         - "5000:5000"
         db:
                 image: mongo:5.0
+                container_name: db
                 ports:
                         - "27017:27017"
                 networks:
diff --git a/1. Containerization/Le Van Chien/nginx/Dockerfile b/1. Containerization/Le Van Chien/nginx/Dockerfile
new file mode 100644
index 000000000..4058d5d69
--- /dev/null
+++ b/1. Containerization/Le Van Chien/nginx/Dockerfile	
@@ -0,0 +1,3 @@
+FROM nginx:1.22.0-alpine
+COPY ./nginx.conf /etc/nginx/nginx.conf
+COPY ./static /var/www/html
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/nginx/nginx.conf b/1. Containerization/Le Van Chien/nginx/nginx.conf
index a3ca6bfb5..f8f314cdf 100644
--- a/1. Containerization/Le Van Chien/nginx/nginx.conf	
+++ b/1. Containerization/Le Van Chien/nginx/nginx.conf	
@@ -1,5 +1,9 @@
 events {}
 http {
+	upstream api_server {
+		server api:5000;
+		# server app2:5000;
+	}
 	server {
 		listen 80;
 		location / {
@@ -7,5 +11,9 @@ http {
 			root /var/www/html;
 			index index.html;	
 		}
+
+		location /people/ {
+			proxy_pass http://api_server;
+		}
 	}
 }
diff --git a/1. Containerization/Le Van Chien/nginx/static/index.html b/1. Containerization/Le Van Chien/nginx/static/index.html
index e7a11b1f9..52f2dfe25 100644
--- a/1. Containerization/Le Van Chien/nginx/static/index.html	
+++ b/1. Containerization/Le Van Chien/nginx/static/index.html	
@@ -16,6 +16,7 @@ <h1 class="header">VDT Cloud Attendee</h1>
             <th></th>
             <th class="table-success text-center" style="font-size: small; width: 1.5cm;">ID</th>
             <th class="table-success text-center" style="font-size: small;">Họ và tên</th>
+            <th class="table-success text-center" style="font-size: small; width: 2cm;">Username</th>
             <th class="table-success text-center" style="font-size: small;width: 2cm;">Năm sinh</th>
             <th class="table-success text-center" style="font-size: small; width: 2cm;">Giới tính</th>
             <th class="table-success text-center" style="font-size: small;">Trường</th>
@@ -23,7 +24,8 @@ <h1 class="header">VDT Cloud Attendee</h1>
             <tr class="filters">
                 <td><button id="search-btn">Search</button></td>
                 <td><input type="text" style="width:100%;" id="id-input"></td>
-                <td><input type="text" style="width:100%;" id="nam-input"></td>
+                <td><input type="text" style="width:100%;" id="name-input"></td>
+                <td><input type="text" style="width:100%;" id="username-input"></td>
                 <td><input type="text" style="width:100%;" id="yob-input"></td>
                 <td><input type="text" style="width:100%" id="sex-input"></td>
                 <td><input type="text" style="width:100%" id="uni-input"></td>
@@ -32,7 +34,9 @@ <h1 class="header">VDT Cloud Attendee</h1>
            </thead>
            <tbody></tbody>
         </table>
-        
+        <div>
+            <button id="add-btn">Add new attendee</button>
+        </div>
         <script src="script.js"></script>
     </body>
 </html>
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/nginx/static/script.js b/1. Containerization/Le Van Chien/nginx/static/script.js
index 2c820a022..dd082fe72 100644
--- a/1. Containerization/Le Van Chien/nginx/static/script.js	
+++ b/1. Containerization/Le Van Chien/nginx/static/script.js	
@@ -2,27 +2,185 @@ const searchBtn = document.querySelector('#search-btn');
 
 searchBtn.onclick = function() {
     const id = document.querySelector('#id-input').value;
+    const username = document.querySelector('#username-input').value;
 
-    fetch('http://localhost:5000/people/' + id)
-    .then(response => response.json())
-    .then(data => loadHTMLTable(data));
+    if (username === "") {
+        fetch('/people/' + id)
+        .then(response => response.json())
+        .then(data => loadHTMLTable(data));
+    }
+    else {
+        fetch('/people/' + username)
+        .then(response => response.json())
+        .then(data => loadHTMLTable(data));
+    }
 }
 
+
+function sendDeleteRequest(username, btn) {
+    fetch('/people/delete/' + username, {
+        method: 'DELETE'
+    })
+        .then(response => response.json())
+        .then(result => {
+            console.log(result.message);
+            row = btn.parentNode.parentNode;
+            row.parentNode.removeChild(row);
+        })
+        .catch(error => {
+        console.error(error);
+        // Handle errors
+        });
+}
+  
+// Attach event listeners to the delete buttons
+document.querySelector('table tbody').addEventListener('click', function(event) {
+    if (event.target.className === "delete-row-btn") {
+        sendDeleteRequest(event.target.dataset.user, event.target);
+    }
+    if (event.target.className === "cancel-btn") {
+        row = event.target.parentNode.parentNode;
+        row.parentNode.removeChild(row);
+    }
+    if (event.target.className === "submit-btn") {
+        addNewAttendee(event.target.parentNode.parentNode)
+    }
+
+    if (event.target.className === 'edit-row-btn') {
+        getNewData(event.target.parentNode.parentNode, event.target.dataset.user)
+    }
+
+    if (event.target.className === 'change-btn') {
+        change(event.target.parentNode.parentNode, event.target.dataset.user);
+        event.target.parentNode.innerHTML = "<td></td>";
+    }
+
+});
+
+
+// ADD 
+
+addBtn = document.querySelector('#add-btn');
+
+addBtn.onclick = function() {
+    const table = document.querySelector('table tbody');
+    let tableHtml = "";
+    tableHtml += "<tr>";
+    tableHtml += `<td><button class="cancel-btn">Cancel</button></td>`;
+    tableHtml += `<td><input type="text" style="width:100%;" id="new-id"></td>`;
+    tableHtml += `<td><input type="text" style="width:100%;" id="new-name"></td>`;
+    tableHtml += `<td><input type="text" style="width:100%;" id="new-username"></td>`;
+    tableHtml += `<td><input type="text" style="width:100%;" id="new-yob"></td>`;
+    tableHtml += `<td><input type="text" style="width:100%;" id="new-sex"></td>`;
+    tableHtml += `<td><input type="text" style="width:100%;" id="new-school"></td>`;
+    tableHtml += `<td><input type="text" style="width:100%;" id="new-major"></td>`;
+    tableHtml += `<td><button class="submit-btn">Add</button></td>`;
+    tableHtml += "</tr>";
+
+    table.innerHTML += tableHtml;
+}
+
+
+function addNewAttendee(row) {
+    var id = row.querySelector('#new-id').value;
+    const newAttendee = {
+        id: row.querySelector('#new-id').value,
+        name: row.querySelector('#new-name').value,
+        username: row.querySelector('#new-username').value,
+        yob: row.querySelector('#new-yob').value,
+        sex: row.querySelector('#new-sex').value,
+        school: row.querySelector('#new-school').value,
+        major: row.querySelector('#new-major').value
+    };
+
+
+    fetch('/people/create/', {
+        method: 'PUT',
+        headers: {
+            'Content-Type': 'application/json'
+        },
+        body: JSON.stringify(newAttendee),
+    })
+        .then(response => response.json())
+        .then(result => {
+            console.log(result.message);
+            row.parentNode.removeChild(row);
+        })
+}
+
+// update ////////////
+
+function getNewData(row, username) {
+    const cells = row.querySelectorAll('td'); // Get all <td> elements within the row
+    cells.forEach((cell, index) => {
+        const value = cell.textContent;
+        if (index == 0) {
+            cell.innerHTML = `<td><button class="change-btn" data-user=${username}>Change</td>`;
+        }
+        else if (index == 3 || index > 7){
+            cell.innerHTML = cell.innerHTML;
+        }
+        else {
+            cell.innerHTML = `<input type="text" value="${value}" />`;
+        }
+    });
+  }
+  
+
+
+
+function change(row, username) {
+    const inputs = row.querySelectorAll('input'); // Get all <input> elements within the row
+
+    inputs.forEach(input => {
+      const value = input.value;
+      input.parentNode.innerHTML = value;
+    });
+
+    updateData = {
+        id: inputs[0].value,
+        name: inputs[1].value,
+        yob: inputs[2].value,
+        sex: inputs[3].value,
+        school: inputs[4].value,
+        major: inputs[5].value
+    }
+
+    fetch('/people/update/' + username, {
+        method: 'PUT',
+        headers: {
+            'Content-Type': 'application/json'
+        },
+        body: JSON.stringify(updateData)
+    })
+        .then(response => response.json())
+        .then(result => {
+            console.log(result.message);
+        })
+}
+
+
+
+////////////////////
+
+
 function loadHTMLTable(data) {
     const table = document.querySelector('table tbody');
-    console.log('test');
     let tableHtml = "";
     // let i = 1;
 
-    data.forEach(function ({ no, name, yob, sex, school, major }) {
+    data.forEach(function ({ id, name, username, yob, sex, school, major }) {
         tableHtml += "<tr>";
         tableHtml += "<td></td>";
-        tableHtml += `<td>${no}</td>`;
+        tableHtml += `<td>${id}</td>`;
         tableHtml += `<td>${name}</td>`;
+        tableHtml += `<td>${username}</td>`;
         tableHtml += `<td>${yob}</td>`;
         tableHtml += `<td>${sex}</td>`;
         tableHtml += `<td>${school}</td>`;
         tableHtml += `<td>${major}</td>`;
+        tableHtml += `<td><button class="delete-row-btn" data-user=${username}>Delete</td>`;
+        tableHtml += `<td><button class="edit-row-btn" data-user=${username}>Edit</td>`;
         tableHtml += "</tr>";
     });
 
diff --git a/1. Containerization/Le Van Chien/nginx/static/stylesheet.css b/1. Containerization/Le Van Chien/nginx/static/stylesheet.css
index 2b88729e2..a6e93054c 100644
--- a/1. Containerization/Le Van Chien/nginx/static/stylesheet.css	
+++ b/1. Containerization/Le Van Chien/nginx/static/stylesheet.css	
@@ -1,3 +1,14 @@
 .header {
     text-align: center;
-}
\ No newline at end of file
+}
+
+button {
+    background-color: #4CAF50; /* Green */
+    border: none;
+    color: white;
+    padding: 2px 10px;
+    text-align: center;
+    text-decoration: none;
+    display: inline-block;
+    font-size: 10px;
+  }
\ No newline at end of file
diff --git a/10.GK/LeVanChien/README.md b/10.GK/LeVanChien/README.md
new file mode 100644
index 000000000..0e84b1c8a
--- /dev/null
+++ b/10.GK/LeVanChien/README.md
@@ -0,0 +1,226 @@
+# Midterm assignment - VDT Cloud
+
+## 0. Phát triển three-tier web app
+Web app có các chức năng đơn giản như liệt kê danh sách các sinh viên, tìm kiếm theo username, xóa, cập nhật thông tin một sinh viên, thêm thông tin sinh viên mới.
+![](images/demo-webui.png)
+
+Hệ thống gồm [ba dịch vụ](https://github.com/lechiennn/Viettel-Digital-Talent-2023/tree/midterm/1.%20Containerization/Le%20Van%20Chien):
+
+- Web: Giao diện viết bằng html + css + javascript, triển khai trên nền nginx.
+- Api: Sử dụng Flask với các chức năng get, create, delete, update các thông tin. Các chức năng trong api đều có unit tests, sử dụng thư viện pytest.
+- Database: Sử dụng Mongodb
+
+## 1. Containerization
+Các dịch vụ đều được đóng gói thành các container.
+
+Output câu lệnh build các image (bằng docker-compose):
+![](images/output-dc-up.png)
+### Web
+
+Dockerfile
+```
+FROM nginx:1.22.0-alpine
+COPY ./nginx.conf /etc/nginx/nginx.conf
+COPY ./static /var/www/html
+```
+Docker history
+![](images/history-nginx.png)
+### Api
+Dockerfile
+```
+FROM python:3.9-slim
+WORKDIR /app
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+ENV FLASK_APP=app.py
+COPY . .
+CMD ["python", "app.py"]
+```
+Docker history
+![](images/history-app.png)
+### Db
+Docker history
+![](images/history-mongo.png)
+
+Kích thước các images:
+![](images/image-size.png)
+
+## 2. Continuous Integration
+File setup [công cụ CI](https://github.com/lechiennn/Viettel-Digital-Talent-2023/tree/midterm/.github/workflows):
+```
+name: CI
+
+on:
+  push:
+    branches:
+      - midterm
+  pull_request:
+    branches:
+      - midterm
+ 
+jobs:
+  test:
+    runs-on: ubuntu-20.04
+
+    steps:
+      - name: checkout code
+        uses: actions/checkout@v3
+
+      - name: setup Python
+        uses: actions/setup-python@v3
+        with:
+          python-version: 3.8
+          
+      - name: install dependencies
+        run: |
+                pip install --upgrade pip
+                pip install -r 1.\ Containerization/Le\ Van\ Chien/app/tests/test_requirements.txt
+      - name: run tests
+        working-directory: 1. Containerization/Le Van Chien/app
+        run: pytest
+
+```
+Việc chỉ định branch `midterm` trong `on.push` và `on.pull_request` là để github actions tự động thực hiện jobs test (chạy các unit tests đã viết ở phần trước) khi có sự kiện push commit hoặc tạo PR vào branch `midterm`
+
+Github Actions thực hiện test sau khi push commit:
+![](images/ci-log.png)
+
+## 3. Continuous Delivery
+
+Phần này sử dụng Ansible-playbook để setup và build các container trên một host.
+
+### File setup [CD](https://github.com/lechiennn/Viettel-Digital-Talent-2023/tree/midterm/.github/workflows)
+```
+name: Build Dockerfile and push
+
+on:
+  push:
+    tags:
+      - v*
+
+jobs:
+  docker:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      
+      - name: Setup Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push app image
+        uses: docker/build-push-action@v4
+        with:
+          context: 1. Containerization/Le Van Chien/app/
+          push: true
+          tags: ${{ secrets.DOCKERHUB_USERNAME }}/app:${{ github.ref_name }}
+
+      - name: Build and push web image
+        uses: docker/build-push-action@v4
+        with:
+          context: 1. Containerization/Le Van Chien/nginx/
+          push: true
+          tags: ${{ secrets.DOCKERHUB_USERNAME }}/web:${{ github.ref_name }}
+
+```
+Việc chỉ định `tags` trong `on.push` là để Github Actions tự động build các Dockerfile của dịch vụ web và api và push lên docker hub:
+
+- Sau khi push một tag mới:
+```
+git tag v1.2
+git push origin midterm v1.2
+```
+- Github action tự động build image và push lên dockerhub với tag vừa push:
+
+![](images/cd.png)
+![](images/dockerhub.png)
+
+Kế quả thực hiện 2 actions CI, CD trên github mỗi lần push:
+
+![](images/ci-cd.png)
+
+---
+
+### **Cấu trúc cây thư mục [các roles và các file playbooks](https://github.com/lechiennn/Viettel-Digital-Talent-2023/tree/midterm/2.Ansible/LeVanChien)**
+
+```
+├── ansible.cfg
+├── inventories
+│   └── inventory.yaml
+├── requirements.yaml
+├── roles
+│   ├── api
+│   │   ├── defaults
+│   │   │   └── main.yaml
+│   │   └── tasks
+│   │       └── main.yaml
+│   ├── common
+│   │   ├── defaults1
+│   │   │   └── main.yaml
+│   │   ├── handlers
+│   │   │   └── main.yaml
+│   │   └── tasks
+│   │       ├── main.yaml
+│   │       ├── setup_centos.yaml
+│   │       └── setup_ubuntu.yaml
+│   ├── db
+│   │   ├── defaults
+│   │   │   └── main.yaml
+│   │   └── tasks
+│   │       └── main.yaml
+│   ├── lb
+│   │   ├── defaults
+│   │   │   └── main.yaml
+│   │   ├── files
+│   │   │   ├── Dockerfile
+│   │   │   └── nginx.conf
+│   │   └── tasks
+│   │       └── main.yaml
+│   └── web
+│       ├── defaults
+│       │   └── main.yaml
+│       └── tasks
+│           └── main.yaml
+└── setup.yaml
+```
+Các roles web và api pull images từ dockerhub và triển khai các dịch vụ web và api trên 2 container khác nhau cho mỗi dịch vụ:
+
+![](images/all-service.png)
+
+Các container `nginx1` và `nginx2` đóng vai trò là các web server, container `lb` cũng sử dụng nginx nhưng đóng vai trò là load balancer, reverse proxy, được cấu hình để gửi request đến một trong hai web server:
+```
+upstream server {
+		server nginx1:80;
+		server nginx2:80;
+	}
+```
+
+Output triển khai hệ thống:
+![](images/setup-playbook2.png)![](images/setup-playbook1.png)
+
+## 4. Monitoring
+Role `monitor` cài đặt các dịch vụ `Node-exporter` và `cadvisor` dưới dạng các container, gửi các thông số giám sát đến hệ thống prometheus tập trung http://27.66.108.93:9090/ với label `username='levanchien'`
+
+![](images/prom.png)
+
+Dashboard giám sát nodes & container trên grafana:
+![](images/grafana1.png) ![](images/grafana2.png)
+
+## 5. Logging
+
+Role `log` cài đặt dịch vụ fluentd để collect log từ load balancer `lb`, đẩy log lên hệ thống Elasticsearch tập trung `171.236.38.100:9200` với index `chienlv`
+
+Kibana:
+
+![](images/kibana.png)
+
+Log có các thông tin về thời gian, action, kêt quả (status code),...
+
+![](images/log.png)
+
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diff --git a/10.GK/LeVanChien/images/history-app.png b/10.GK/LeVanChien/images/history-app.png
new file mode 100644
index 000000000..571183a35
Binary files /dev/null and b/10.GK/LeVanChien/images/history-app.png differ
diff --git a/10.GK/LeVanChien/images/history-mongo.png b/10.GK/LeVanChien/images/history-mongo.png
new file mode 100644
index 000000000..5e0629d26
Binary files /dev/null and b/10.GK/LeVanChien/images/history-mongo.png differ
diff --git a/10.GK/LeVanChien/images/history-nginx.png b/10.GK/LeVanChien/images/history-nginx.png
new file mode 100644
index 000000000..daab19045
Binary files /dev/null and b/10.GK/LeVanChien/images/history-nginx.png differ
diff --git a/10.GK/LeVanChien/images/image-size.png b/10.GK/LeVanChien/images/image-size.png
new file mode 100644
index 000000000..5a2ba0c9b
Binary files /dev/null and b/10.GK/LeVanChien/images/image-size.png differ
diff --git a/10.GK/LeVanChien/images/kibana.png b/10.GK/LeVanChien/images/kibana.png
new file mode 100644
index 000000000..4e6eb2a96
Binary files /dev/null and b/10.GK/LeVanChien/images/kibana.png differ
diff --git a/10.GK/LeVanChien/images/log.png b/10.GK/LeVanChien/images/log.png
new file mode 100644
index 000000000..249ad571d
Binary files /dev/null and b/10.GK/LeVanChien/images/log.png differ
diff --git a/10.GK/LeVanChien/images/output-dc-up.png b/10.GK/LeVanChien/images/output-dc-up.png
new file mode 100644
index 000000000..ba5e75ec2
Binary files /dev/null and b/10.GK/LeVanChien/images/output-dc-up.png differ
diff --git a/10.GK/LeVanChien/images/prom.png b/10.GK/LeVanChien/images/prom.png
new file mode 100644
index 000000000..799bd5101
Binary files /dev/null and b/10.GK/LeVanChien/images/prom.png differ
diff --git a/10.GK/LeVanChien/images/setup-playbook1.png b/10.GK/LeVanChien/images/setup-playbook1.png
new file mode 100644
index 000000000..63278c0e8
Binary files /dev/null and b/10.GK/LeVanChien/images/setup-playbook1.png differ
diff --git a/10.GK/LeVanChien/images/setup-playbook2.png b/10.GK/LeVanChien/images/setup-playbook2.png
new file mode 100644
index 000000000..54a2d3d15
Binary files /dev/null and b/10.GK/LeVanChien/images/setup-playbook2.png differ
diff --git a/1. Containerization/Le Van Chien/ansible/inventories/inventory.yaml b/10.GK/LeVanChien/inventories/inventory.yaml
similarity index 71%
rename from 1. Containerization/Le Van Chien/ansible/inventories/inventory.yaml
rename to 10.GK/LeVanChien/inventories/inventory.yaml
index 3d324dcbb..2db3f43fa 100644
--- a/1. Containerization/Le Van Chien/ansible/inventories/inventory.yaml	
+++ b/10.GK/LeVanChien/inventories/inventory.yaml
@@ -3,7 +3,7 @@ all:
   hosts:
     localhost:
       ansible_connection: local
-      ansible_python_interpreter: /home/lechiennn/Viettel-Digital-Talent-2023/1.\ Containerization/Le\ Van\ Chien/env/bin/python
+      ansible_python_interpreter: /home/lechiennn/Viettel-Digital-Talent-2023/2.Ansible/LeVanChien/env/bin/python
       ansible_become_user: lechiennn
       ansible_become_password: !vault |
           $ANSIBLE_VAULT;1.1;AES256
@@ -12,11 +12,3 @@ all:
           36316339323630306464613430646237646438353665343266386139613463336363383630343238
           3535623932643139380a303833366638653362363862353564353532353061636131366335653036
           6265
-
-# all:
-#   hosts:
-#     localhost:
-#       ansible_connection: docker
-#       ansible_host: ubuntu2
-#       ansible_python_interpreter: /usr/bin/python3
-#       ansible_become_user: root
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/log/defaults/main.yaml b/10.GK/LeVanChien/roles/log/defaults/main.yaml
new file mode 100644
index 000000000..dcbab335a
--- /dev/null
+++ b/10.GK/LeVanChien/roles/log/defaults/main.yaml
@@ -0,0 +1,16 @@
+user: lechiennn
+path_to_log: "/home/{{ user }}/test/lb/log"
+path_to_folder: "/home/{{ user }}/test/fluentd"
+
+image_name: logging
+image_state: present
+
+container_name: logging
+container_state: started
+
+ports:
+  - "24224:24224"
+volumes:
+  - "{{ path_to_log }}:/nginx"
+  - "{{ path_to_folder }}/fluent.conf:/fluentd/etc/fluent.conf"
+
diff --git a/10.GK/LeVanChien/roles/log/files/Dockerfile b/10.GK/LeVanChien/roles/log/files/Dockerfile
new file mode 100644
index 000000000..c2ce3cc5e
--- /dev/null
+++ b/10.GK/LeVanChien/roles/log/files/Dockerfile
@@ -0,0 +1,10 @@
+FROM fluent/fluentd:v1.14-1
+USER root
+RUN fluent-gem install fluent-plugin-elasticsearch
+
+COPY ./fluent.conf /fluentd/etc/fluent.conf
+WORKDIR /nginx
+EXPOSE 24224
+
+# Start Fluentd
+CMD ["fluentd", "-c", "/fluentd/etc/fluent.conf"]
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/log/files/docker-compose.yaml b/10.GK/LeVanChien/roles/log/files/docker-compose.yaml
new file mode 100644
index 000000000..24de2ec67
--- /dev/null
+++ b/10.GK/LeVanChien/roles/log/files/docker-compose.yaml
@@ -0,0 +1,11 @@
+version: '3.9'
+
+services:
+  nginx:
+    build: .
+    container_name: logging
+    ports:
+      - "24224:24224"
+    volumes:
+      - "/home/lechiennn/test/lb/log:/nginx"
+      - "./fluent.conf:/fluentd/etc/fluent.conf"
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/log/files/fluent.conf b/10.GK/LeVanChien/roles/log/files/fluent.conf
new file mode 100644
index 000000000..a80ba41fb
--- /dev/null
+++ b/10.GK/LeVanChien/roles/log/files/fluent.conf
@@ -0,0 +1,17 @@
+<source>
+    @type tail
+    path /nginx/access.log
+    pos_file /nginx/access.log.pos
+    tag nginx.access
+    read_from_head true
+    format nginx
+</source>
+<match nginx.access>
+    @type elasticsearch
+    host 171.236.38.100
+    port 9200
+    logstash_format true
+    logstash_prefix chienlv
+    logstash_dateformat %Y%m%d
+    include_tag_key true
+</match>
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/log/tasks/main.yaml b/10.GK/LeVanChien/roles/log/tasks/main.yaml
new file mode 100644
index 000000000..d29f44ff5
--- /dev/null
+++ b/10.GK/LeVanChien/roles/log/tasks/main.yaml
@@ -0,0 +1,26 @@
+- name: create log folder
+  file:
+    path: "{{ path_to_folder }}"
+    state: directory
+
+- name: copy all resources to target host
+  copy:
+    src: ./
+    dest: "{{ path_to_folder }}"
+
+- name: build Docker Image
+  docker_image: 
+    name: "{{ image_name }}"
+    state: "{{ image_state }}"
+    source: build
+    build:
+      path: "{{ path_to_folder }}"
+  
+
+- name: run Docker container
+  community.docker.docker_container:
+    name: "{{ container_name }}"
+    image: "{{ image_name }}"
+    state: "{{ container_state }}"
+    ports: "{{ ports }}"
+    volumes: "{{ volumes }}"
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/monitor/defaults/main.yaml b/10.GK/LeVanChien/roles/monitor/defaults/main.yaml
new file mode 100644
index 000000000..9d11c4877
--- /dev/null
+++ b/10.GK/LeVanChien/roles/monitor/defaults/main.yaml
@@ -0,0 +1,4 @@
+user: lechiennn
+path_to_folder: "/home/{{ user }}/test/monitor"
+
+command: docker compose up
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/monitor/files/docker-compose.yml b/10.GK/LeVanChien/roles/monitor/files/docker-compose.yml
new file mode 100644
index 000000000..b7857415f
--- /dev/null
+++ b/10.GK/LeVanChien/roles/monitor/files/docker-compose.yml
@@ -0,0 +1,67 @@
+version: '3.9'
+
+networks:
+  monitor: 
+    driver: bridge
+
+services:
+  prometheus:
+    image: prom/prometheus:v2.43.0
+    container_name: prom
+    ports:
+      - "9090:9090"
+    volumes:
+      - ./prometheus:/etc/prometheus
+    environment:
+      TZ: "Asia/Ho_Chi_Minh"
+    restart: unless-stopped
+    networks:
+      - monitor
+
+  nodeexporter:
+    image: prom/node-exporter:v1.5.0
+    container_name: nodeexporter
+    privileged: true
+    devices:
+      - /dev/kmsg:/dev/kmsg
+    ports:
+      - "9100:9100"
+    volumes:
+      - /proc:/host/proc:ro
+      - /sys:/host/sys:ro
+      - /:/rootfs:ro
+    restart: unless-stopped
+    networks:
+      - monitor
+  
+  cadvisor:
+    image: gcr.io/cadvisor/cadvisor:v0.47.1
+    container_name: cadvisor
+    ports:
+      - "8090:8080"
+    volumes:
+      - /:/rootfs:ro
+      - /var/run:/var/run:ro
+      - /sys:/sys:ro
+      - /var/lib/docker:/var/lib/docker:ro
+    restart: unless-stopped
+    environment:
+      TZ: "Asia/Ho_Chi_Minh"
+    networks:
+      - monitor
+
+  grafana:
+    image: grafana/grafana:9.5.1
+    container_name: grafana
+    volumes:
+      - ./grafana/provisioning/dashboards:/etc/grafana/provisioning/dashboards
+      - ./grafana/provisioning/datasources:/etc/grafana/provisioning/datasources
+    environment:
+      - GF_SECURITY_ADMIN_USER=${ADMIN_USER:-admin}
+      - GF_SECURITY_ADMIN_PASSWORD=${ADMIN_PASSWORD:-admin}
+      - GF_USERS_ALLOW_SIGN_UP=false
+    restart: unless-stopped
+    ports:
+      - "3000:3000"
+    networks:
+      - monitor
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/dashboard.yml b/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/dashboard.yml
new file mode 100644
index 000000000..d83b43c7b
--- /dev/null
+++ b/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/dashboard.yml
@@ -0,0 +1,12 @@
+apiVersion: 1
+
+providers:
+  - name: 'Prometheus'
+    orgId: 1
+    folder: ''
+    type: file
+    disableDeletion: false
+    editable: true
+    allowUiUpdates: true
+    options:
+      path: /etc/grafana/provisioning/dashboards
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/docker_containers.json b/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/docker_containers.json
new file mode 100644
index 000000000..5ac83a67d
--- /dev/null
+++ b/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/docker_containers.json
@@ -0,0 +1,1270 @@
+{
+  "id": null,
+  "title": "Docker Containers",
+  "description": "Containers metrics",
+  "tags": [
+    "docker"
+  ],
+  "style": "dark",
+  "timezone": "browser",
+  "editable": true,
+  "hideControls": false,
+  "sharedCrosshair": true,
+  "rows": [
+    {
+      "collapse": false,
+      "editable": true,
+      "height": "150px",
+      "panels": [
+        {
+          "cacheTimeout": null,
+          "colorBackground": false,
+          "colorValue": false,
+          "colors": [
+            "rgba(50, 172, 45, 0.97)",
+            "rgba(237, 129, 40, 0.89)",
+            "rgba(245, 54, 54, 0.9)"
+          ],
+          "datasource": "Prometheus",
+          "decimals": 2,
+          "editable": true,
+          "error": false,
+          "format": "percent",
+          "gauge": {
+            "maxValue": 100,
+            "minValue": 0,
+            "show": true,
+            "thresholdLabels": false,
+            "thresholdMarkers": true
+          },
+          "id": 4,
+          "interval": null,
+          "isNew": true,
+          "links": [],
+          "mappingType": 1,
+          "mappingTypes": [
+            {
+              "name": "value to text",
+              "value": 1
+            },
+            {
+              "name": "range to text",
+              "value": 2
+            }
+          ],
+          "maxDataPoints": 100,
+          "nullPointMode": "connected",
+          "nullText": null,
+          "postfix": "",
+          "postfixFontSize": "50%",
+          "prefix": "",
+          "prefixFontSize": "50%",
+          "rangeMaps": [
+            {
+              "from": "null",
+              "text": "N/A",
+              "to": "null"
+            }
+          ],
+          "span": 2,
+          "sparkline": {
+            "fillColor": "rgba(31, 118, 189, 0.18)",
+            "full": false,
+            "lineColor": "rgb(31, 120, 193)",
+            "show": false
+          },
+          "targets": [
+            {
+              "expr": "sum(rate(container_cpu_user_seconds_total{image!=\"\"}[1m])) / count(node_cpu_seconds_total{mode=\"user\"}) * 100",
+              "interval": "10s",
+              "intervalFactor": 1,
+              "legendFormat": "",
+              "refId": "A",
+              "step": 10
+            }
+          ],
+          "thresholds": "65, 90",
+          "title": "CPU Load",
+          "transparent": false,
+          "type": "singlestat",
+          "valueFontSize": "80%",
+          "valueMaps": [
+            {
+              "op": "=",
+              "text": "N/A",
+              "value": "null"
+            }
+          ],
+          "valueName": "avg",
+          "timeFrom": "10s",
+          "hideTimeOverride": true
+        },
+        {
+          "cacheTimeout": null,
+          "colorBackground": false,
+          "colorValue": false,
+          "colors": [
+            "rgba(245, 54, 54, 0.9)",
+            "rgba(237, 129, 40, 0.89)",
+            "rgba(50, 172, 45, 0.97)"
+          ],
+          "datasource": "Prometheus",
+          "editable": true,
+          "error": false,
+          "format": "none",
+          "gauge": {
+            "maxValue": 100,
+            "minValue": 0,
+            "show": false,
+            "thresholdLabels": false,
+            "thresholdMarkers": true
+          },
+          "id": 7,
+          "interval": null,
+          "isNew": true,
+          "links": [],
+          "mappingType": 1,
+          "mappingTypes": [
+            {
+              "name": "value to text",
+              "value": 1
+            },
+            {
+              "name": "range to text",
+              "value": 2
+            }
+          ],
+          "maxDataPoints": 100,
+          "nullPointMode": "connected",
+          "nullText": null,
+          "postfix": "",
+          "postfixFontSize": "50%",
+          "prefix": "",
+          "prefixFontSize": "50%",
+          "rangeMaps": [
+            {
+              "from": "null",
+              "text": "N/A",
+              "to": "null"
+            }
+          ],
+          "span": 2,
+          "sparkline": {
+            "fillColor": "rgba(31, 118, 189, 0.18)",
+            "full": false,
+            "lineColor": "rgb(31, 120, 193)",
+            "show": false
+          },
+          "targets": [
+            {
+              "expr": "machine_cpu_cores",
+              "interval": "",
+              "intervalFactor": 2,
+              "legendFormat": "",
+              "metric": "machine_cpu_cores",
+              "refId": "A",
+              "step": 20
+            }
+          ],
+          "thresholds": "",
+          "title": "CPU Cores",
+          "type": "singlestat",
+          "valueFontSize": "80%",
+          "valueMaps": [
+            {
+              "op": "=",
+              "text": "N/A",
+              "value": "null"
+            }
+          ],
+          "valueName": "avg"
+        },
+        {
+          "cacheTimeout": null,
+          "colorBackground": false,
+          "colorValue": false,
+          "colors": [
+            "rgba(50, 172, 45, 0.97)",
+            "rgba(237, 129, 40, 0.89)",
+            "rgba(245, 54, 54, 0.9)"
+          ],
+          "datasource": "Prometheus",
+          "editable": true,
+          "error": false,
+          "format": "percent",
+          "gauge": {
+            "maxValue": 100,
+            "minValue": 0,
+            "show": true,
+            "thresholdLabels": false,
+            "thresholdMarkers": true
+          },
+          "id": 5,
+          "interval": null,
+          "isNew": true,
+          "links": [],
+          "mappingType": 1,
+          "mappingTypes": [
+            {
+              "name": "value to text",
+              "value": 1
+            },
+            {
+              "name": "range to text",
+              "value": 2
+            }
+          ],
+          "maxDataPoints": 100,
+          "nullPointMode": "connected",
+          "nullText": null,
+          "postfix": "",
+          "postfixFontSize": "50%",
+          "prefix": "",
+          "prefixFontSize": "50%",
+          "rangeMaps": [
+            {
+              "from": "null",
+              "text": "N/A",
+              "to": "null"
+            }
+          ],
+          "span": 2,
+          "sparkline": {
+            "fillColor": "rgba(31, 118, 189, 0.18)",
+            "full": false,
+            "lineColor": "rgb(31, 120, 193)",
+            "show": false
+          },
+          "targets": [
+            {
+              "expr": "(sum(node_memory_MemTotal_bytes) - sum(node_memory_MemFree_bytes+node_memory_Buffers_bytes+node_memory_Cached_bytes) ) / sum(node_memory_MemTotal_bytes) * 100",
+              "interval": "10s",
+              "intervalFactor": 2,
+              "legendFormat": "",
+              "refId": "A",
+              "step": 20
+            }
+          ],
+          "thresholds": "65, 90",
+          "title": "Memory Load",
+          "transparent": false,
+          "type": "singlestat",
+          "valueFontSize": "80%",
+          "valueMaps": [
+            {
+              "op": "=",
+              "text": "N/A",
+              "value": "null"
+            }
+          ],
+          "valueName": "avg",
+          "timeFrom": "10s",
+          "hideTimeOverride": true
+        },
+        {
+          "cacheTimeout": null,
+          "colorBackground": false,
+          "colorValue": false,
+          "colors": [
+            "rgba(245, 54, 54, 0.9)",
+            "rgba(237, 129, 40, 0.89)",
+            "rgba(50, 172, 45, 0.97)"
+          ],
+          "datasource": "Prometheus",
+          "decimals": 2,
+          "editable": true,
+          "error": false,
+          "format": "bytes",
+          "gauge": {
+            "maxValue": 100,
+            "minValue": 0,
+            "show": false,
+            "thresholdLabels": false,
+            "thresholdMarkers": true
+          },
+          "id": 2,
+          "interval": null,
+          "isNew": true,
+          "links": [],
+          "mappingType": 1,
+          "mappingTypes": [
+            {
+              "name": "value to text",
+              "value": 1
+            },
+            {
+              "name": "range to text",
+              "value": 2
+            }
+          ],
+          "maxDataPoints": 100,
+          "nullPointMode": "connected",
+          "nullText": null,
+          "postfix": "",
+          "postfixFontSize": "50%",
+          "prefix": "",
+          "prefixFontSize": "50%",
+          "rangeMaps": [
+            {
+              "from": "null",
+              "text": "N/A",
+              "to": "null"
+            }
+          ],
+          "span": 2,
+          "sparkline": {
+            "fillColor": "rgba(31, 118, 189, 0.18)",
+            "full": false,
+            "lineColor": "rgb(31, 120, 193)",
+            "show": false
+          },
+          "targets": [
+            {
+              "expr": "sum(container_memory_usage_bytes{image!=\"\"})",
+              "interval": "10s",
+              "intervalFactor": 2,
+              "legendFormat": "",
+              "refId": "A",
+              "step": 20
+            }
+          ],
+          "thresholds": "",
+          "timeFrom": "10s",
+          "title": "Used Memory",
+          "transparent": false,
+          "type": "singlestat",
+          "valueFontSize": "80%",
+          "valueMaps": [
+            {
+              "op": "=",
+              "text": "N/A",
+              "value": "null"
+            }
+          ],
+          "valueName": "avg",
+          "hideTimeOverride": true
+        },
+        {
+          "cacheTimeout": null,
+          "colorBackground": false,
+          "colorValue": false,
+          "colors": [
+            "rgba(50, 172, 45, 0.97)",
+            "rgba(237, 129, 40, 0.89)",
+            "rgba(245, 54, 54, 0.9)"
+          ],
+          "datasource": "Prometheus",
+          "decimals": null,
+          "editable": true,
+          "error": false,
+          "format": "percent",
+          "gauge": {
+            "maxValue": 100,
+            "minValue": 0,
+            "show": true,
+            "thresholdLabels": false,
+            "thresholdMarkers": true
+          },
+          "id": 6,
+          "interval": null,
+          "isNew": true,
+          "links": [],
+          "mappingType": 1,
+          "mappingTypes": [
+            {
+              "name": "value to text",
+              "value": 1
+            },
+            {
+              "name": "range to text",
+              "value": 2
+            }
+          ],
+          "maxDataPoints": 100,
+          "nullPointMode": "connected",
+          "nullText": null,
+          "postfix": "",
+          "postfixFontSize": "50%",
+          "prefix": "",
+          "prefixFontSize": "50%",
+          "rangeMaps": [
+            {
+              "from": "null",
+              "text": "N/A",
+              "to": "null"
+            }
+          ],
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+    "list": []
+  },
+  "refresh": "10s",
+  "schemaVersion": 12,
+  "version": 8,
+  "links": [],
+  "gnetId": null
+}
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/docker_host.json b/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/docker_host.json
new file mode 100644
index 000000000..91eb4ac3a
--- /dev/null
+++ b/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/docker_host.json
@@ -0,0 +1,1441 @@
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+            "lineColor": "rgb(31, 120, 193)",
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+            "lineColor": "rgb(31, 120, 193)",
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+        },
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+            }
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+          "thresholds": "",
+          "title": "Free Swap",
+          "type": "singlestat",
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+        },
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+          "colorBackground": false,
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+          "colors": [
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+            "full": false,
+            "lineColor": "rgb(31, 120, 193)",
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+          },
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+              "legendFormat": "",
+              "refId": "A",
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+          "thresholds": "",
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+          "hideTimeOverride": true
+        }
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+      "title": "Available resources"
+    },
+    {
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+      "editable": true,
+      "height": "150px",
+      "panels": [
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+          "bars": true,
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+          "pointradius": 5,
+          "points": false,
+          "renderer": "flot",
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+              "color": "#1F78C1"
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+          "stack": false,
+          "steppedLine": false,
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+              "color": "#BF1B00"
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+            {
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+              "color": "#EF843C"
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+          "stack": true,
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+            },
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+            },
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+          "timeShift": null,
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+            "shared": true,
+            "sort": 2,
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+          "type": "graph",
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+              "min": null,
+              "show": true
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+            }
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+          "stack": false,
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+              "intervalFactor": 1,
+              "legendFormat": "read",
+              "metric": "node_disk_read_bytes_total",
+              "refId": "A",
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+              "intervalFactor": 1,
+              "legendFormat": "written",
+              "metric": "node_disk_written_bytes_total",
+              "refId": "B",
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+            },
+            {
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+              "intervalFactor": 1,
+              "legendFormat": "io time",
+              "metric": "node_disk_io_time_seconds_total",
+              "refId": "C",
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+            }
+          ],
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+          "timeShift": null,
+          "title": "I/O Usage",
+          "tooltip": {
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+            "shared": true,
+            "sort": 0,
+            "value_type": "cumulative"
+          },
+          "type": "graph",
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+              "show": true
+            },
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+              "logBase": 1,
+              "max": null,
+              "min": null,
+              "show": true
+            }
+          ]
+        }
+      ],
+      "title": "I/O"
+    },
+    {
+      "collapse": false,
+      "editable": true,
+      "height": "250px",
+      "panels": [
+        {
+          "aliasColors": {},
+          "bars": false,
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+          "editable": true,
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+            "total": false,
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+          "renderer": "flot",
+          "seriesOverrides": [],
+          "span": 12,
+          "stack": true,
+          "steppedLine": false,
+          "targets": [
+            {
+              "expr": "irate(node_network_receive_bytes_total{device!=\"lo\"}[1m])",
+              "intervalFactor": 1,
+              "legendFormat": "In: {{ device }}",
+              "metric": "node_network_receive_bytes_total",
+              "refId": "A",
+              "step": 1
+            },
+            {
+              "expr": "irate(node_network_transmit_bytes_total{device!=\"lo\"}[1m])",
+              "intervalFactor": 1,
+              "legendFormat": "Out: {{ device }}",
+              "metric": "node_network_transmit_bytes_total",
+              "refId": "B",
+              "step": 1
+            }
+          ],
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+          "timeShift": null,
+          "title": "Network Usage",
+          "tooltip": {
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+            "shared": true,
+            "sort": 2,
+            "value_type": "individual"
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+          "type": "graph",
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+              "max": null,
+              "min": null,
+              "show": false
+            }
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+        }
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+          "stack": true,
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+          "targets": [
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+              "legendFormat": "Used",
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+            },
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+              "legendFormat": "Free",
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+            }
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+          "span": 6,
+          "stack": false,
+          "steppedLine": false,
+          "targets": [
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+              "intervalFactor": 1,
+              "legendFormat": "In",
+              "refId": "A",
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+            },
+            {
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+              "legendFormat": "Out",
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+            }
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+          "timeShift": null,
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+            "sort": 0,
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+              "logBase": 1,
+              "max": null,
+              "min": null,
+              "show": false
+            }
+          ]
+        }
+      ],
+      "title": "New row"
+    }
+  ],
+  "time": {
+    "from": "now-15m",
+    "to": "now"
+  },
+  "timepicker": {
+    "refresh_intervals": [
+      "5s",
+      "10s",
+      "30s",
+      "1m",
+      "5m",
+      "15m",
+      "30m",
+      "1h",
+      "2h",
+      "1d"
+    ],
+    "time_options": [
+      "5m",
+      "15m",
+      "1h",
+      "6h",
+      "12h",
+      "24h",
+      "2d",
+      "7d",
+      "30d"
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+  },
+  "templating": {
+    "list": []
+  },
+  "annotations": {
+    "list": []
+  },
+  "refresh": "10s",
+  "schemaVersion": 12,
+  "version": 2,
+  "links": [],
+  "gnetId": null
+}
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/monitor_services.json b/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/monitor_services.json
new file mode 100644
index 000000000..3d955a407
--- /dev/null
+++ b/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/monitor_services.json
@@ -0,0 +1,3412 @@
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+        "lineColor": "rgb(31, 120, 193)",
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+      "targets": [
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+}
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diff --git a/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/nginx_container.json b/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/nginx_container.json
new file mode 100644
index 000000000..0a35d2bf7
--- /dev/null
+++ b/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/dashboards/nginx_container.json
@@ -0,0 +1,398 @@
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+            "max": true,
+            "min": true,
+            "rightSide": true,
+            "show": true,
+            "total": false,
+            "values": true
+          },
+          "lines": true,
+          "linewidth": 2,
+          "links": [],
+          "nullPointMode": "connected",
+          "percentage": false,
+          "pointradius": 5,
+          "points": false,
+          "renderer": "flot",
+          "seriesOverrides": [],
+          "span": 12,
+          "stack": false,
+          "steppedLine": false,
+          "targets": [
+            {
+              "expr": "sum(rate(container_cpu_usage_seconds_total{name=~\"nginx\"}[5m])) / count(node_cpu_seconds_total{mode=\"system\"}) * 100",
+              "intervalFactor": 2,
+              "legendFormat": "nginx",
+              "refId": "A",
+              "step": 2
+            }
+          ],
+          "timeFrom": null,
+          "timeShift": null,
+          "title": "CPU usage",
+          "tooltip": {
+            "msResolution": false,
+            "shared": true,
+            "sort": 0,
+            "value_type": "cumulative"
+          },
+          "type": "graph",
+          "xaxis": {
+            "show": true
+          },
+          "yaxes": [
+            {
+              "format": "short",
+              "label": null,
+              "logBase": 1,
+              "max": null,
+              "min": null,
+              "show": true
+            },
+            {
+              "format": "short",
+              "label": null,
+              "logBase": 1,
+              "max": null,
+              "min": null,
+              "show": true
+            }
+          ]
+        }
+      ],
+      "title": "Nginx container metrics"
+    }
+  ],
+  "time": {
+    "from": "now-15m",
+    "to": "now"
+  },
+  "timepicker": {
+    "refresh_intervals": [
+      "5s",
+      "10s",
+      "30s",
+      "1m",
+      "5m",
+      "15m",
+      "30m",
+      "1h",
+      "2h",
+      "1d"
+    ],
+    "time_options": [
+      "5m",
+      "15m",
+      "1h",
+      "6h",
+      "12h",
+      "24h",
+      "2d",
+      "7d",
+      "30d"
+    ]
+  },
+    "templating": {
+    "list": []
+  },
+  "annotations": {
+    "list": []
+  },
+  "refresh": "10s",
+  "schemaVersion": 12,
+  "version": 9,
+  "links": [],
+  "gnetId": null
+}
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/datasources/datasource.yml b/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/datasources/datasource.yml
new file mode 100644
index 000000000..bb37f13d9
--- /dev/null
+++ b/10.GK/LeVanChien/roles/monitor/files/grafana/provisioning/datasources/datasource.yml
@@ -0,0 +1,11 @@
+apiVersion: 1
+
+datasources:
+  - name: Prometheus
+    type: prometheus
+    access: proxy
+    orgId: 1
+    url: http://prometheus:9090
+    basicAuth: false
+    isDefault: true
+    editable: true
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/monitor/files/prometheus/prometheus.yml b/10.GK/LeVanChien/roles/monitor/files/prometheus/prometheus.yml
new file mode 100644
index 000000000..7906649da
--- /dev/null
+++ b/10.GK/LeVanChien/roles/monitor/files/prometheus/prometheus.yml
@@ -0,0 +1,20 @@
+global:
+  scrape_interval: 15s
+  external_labels:
+    username: "levanchien"
+
+remote_write:
+  - url: 'http://27.66.108.93:9090/api/v1/write'
+
+scrape_configs:
+  - job_name: 'node-exporter'
+    static_configs:
+    - targets: [
+      'nodeexporter:9100'
+    ]
+
+  - job_name: 'cadvisor'
+    static_configs:
+    - targets: [
+      'cadvisor:8080'
+    ]
\ No newline at end of file
diff --git a/10.GK/LeVanChien/roles/monitor/tasks/main.yaml b/10.GK/LeVanChien/roles/monitor/tasks/main.yaml
new file mode 100644
index 000000000..59e3fce06
--- /dev/null
+++ b/10.GK/LeVanChien/roles/monitor/tasks/main.yaml
@@ -0,0 +1,14 @@
+- name: create monitor folder
+  file:
+    path: "{{ path_to_folder }}"
+    state: directory
+
+- name: copy all resources to target host
+  copy:
+    src: ./
+    dest: "{{ path_to_folder }}"
+
+- name: run docker compose
+  command:
+    chdir: "{{ path_to_folder }}"
+    cmd: "{{ command }}"
\ No newline at end of file
diff --git a/10.GK/LeVanChien/setup.yaml b/10.GK/LeVanChien/setup.yaml
new file mode 100644
index 000000000..f2bff073d
--- /dev/null
+++ b/10.GK/LeVanChien/setup.yaml
@@ -0,0 +1,9 @@
+---
+- name: deploy
+  hosts: all
+  become: true
+  gather_facts: true
+  roles:
+    - monitor
+    - log
+  
\ No newline at end of file
diff --git a/2.Ansible/LeVanChien/.gitignore b/2.Ansible/LeVanChien/.gitignore
new file mode 100644
index 000000000..acad6361d
--- /dev/null
+++ b/2.Ansible/LeVanChien/.gitignore
@@ -0,0 +1,3 @@
+collections/ansible_collections/*
+!collections/ansible_collections/.gitkeep
+/env
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/ansible/ansible.cfg b/2.Ansible/LeVanChien/ansible.cfg
similarity index 100%
rename from 1. Containerization/Le Van Chien/ansible/ansible.cfg
rename to 2.Ansible/LeVanChien/ansible.cfg
diff --git a/2.Ansible/LeVanChien/collections/ansible_collections/.gitkeep b/2.Ansible/LeVanChien/collections/ansible_collections/.gitkeep
new file mode 100644
index 000000000..e69de29bb
diff --git a/2.Ansible/LeVanChien/inventories/inventory.yaml b/2.Ansible/LeVanChien/inventories/inventory.yaml
new file mode 100644
index 000000000..54eba1848
--- /dev/null
+++ b/2.Ansible/LeVanChien/inventories/inventory.yaml
@@ -0,0 +1,14 @@
+---
+all:
+  hosts:
+    localhost:
+      ansible_connection: local
+      ansible_python_interpreter: /home/lechiennn/Viettel-Digital-Talent-2023/2.Ansible/LeVanChien/env/bin/python
+      ansible_become_user: root
+      ansible_become_password: !vault |
+          $ANSIBLE_VAULT;1.1;AES256
+          30313539646439366363313339313065663661353035323036383138643731363937653362643238
+          6162663863313061613932623638643639363766616331300a343234383235616231666639653764
+          36316339323630306464613430646237646438353665343266386139613463336363383630343238
+          3535623932643139380a303833366638653362363862353564353532353061636131366335653036
+          6265
diff --git a/1. Containerization/Le Van Chien/ansible/requirements.yaml b/2.Ansible/LeVanChien/requirements.yaml
similarity index 100%
rename from 1. Containerization/Le Van Chien/ansible/requirements.yaml
rename to 2.Ansible/LeVanChien/requirements.yaml
diff --git a/2.Ansible/LeVanChien/roles/api/defaults/main.yaml b/2.Ansible/LeVanChien/roles/api/defaults/main.yaml
new file mode 100644
index 000000000..030995878
--- /dev/null
+++ b/2.Ansible/LeVanChien/roles/api/defaults/main.yaml
@@ -0,0 +1,8 @@
+image_name: lechiennn/app:v1.2
+
+container_name_1: app
+container_name_2: app2
+# ports:
+#   - "5000:5000"
+container_state: started
+network_name: net
\ No newline at end of file
diff --git a/2.Ansible/LeVanChien/roles/api/tasks/main.yaml b/2.Ansible/LeVanChien/roles/api/tasks/main.yaml
new file mode 100644
index 000000000..da07d6d90
--- /dev/null
+++ b/2.Ansible/LeVanChien/roles/api/tasks/main.yaml
@@ -0,0 +1,17 @@
+- name: run Docker container api 1
+  community.docker.docker_container:
+    name: "{{ container_name_1 }}"
+    image: "{{ image_name }}"
+    state: "{{ container_state }}"
+    # ports: "{{ ports_1 }}"
+    networks:
+      - name: "{{ network_name }}"
+
+- name: run Docker container api 2
+  community.docker.docker_container:
+    name: "{{ container_name_2 }}"
+    image: "{{ image_name }}"
+    state: "{{ container_state }}"
+    # ports: "{{ ports_2 }}"
+    networks:
+      - name: "{{ network_name }}"
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/ansible/roles/common/defaults/main.yaml b/2.Ansible/LeVanChien/roles/common/defaults/main.yaml
similarity index 100%
rename from 1. Containerization/Le Van Chien/ansible/roles/common/defaults/main.yaml
rename to 2.Ansible/LeVanChien/roles/common/defaults/main.yaml
diff --git a/1. Containerization/Le Van Chien/ansible/roles/common/handlers/main.yaml b/2.Ansible/LeVanChien/roles/common/handlers/main.yaml
similarity index 100%
rename from 1. Containerization/Le Van Chien/ansible/roles/common/handlers/main.yaml
rename to 2.Ansible/LeVanChien/roles/common/handlers/main.yaml
diff --git a/1. Containerization/Le Van Chien/ansible/roles/common/tasks/main.yaml b/2.Ansible/LeVanChien/roles/common/tasks/main.yaml
similarity index 100%
rename from 1. Containerization/Le Van Chien/ansible/roles/common/tasks/main.yaml
rename to 2.Ansible/LeVanChien/roles/common/tasks/main.yaml
diff --git a/1. Containerization/Le Van Chien/ansible/roles/common/tasks/setup_centos.yaml b/2.Ansible/LeVanChien/roles/common/tasks/setup_centos.yaml
similarity index 100%
rename from 1. Containerization/Le Van Chien/ansible/roles/common/tasks/setup_centos.yaml
rename to 2.Ansible/LeVanChien/roles/common/tasks/setup_centos.yaml
diff --git a/2.Ansible/LeVanChien/roles/common/tasks/setup_ubuntu.yaml b/2.Ansible/LeVanChien/roles/common/tasks/setup_ubuntu.yaml
new file mode 100644
index 000000000..09c8599ae
--- /dev/null
+++ b/2.Ansible/LeVanChien/roles/common/tasks/setup_ubuntu.yaml
@@ -0,0 +1,42 @@
+---
+- name: Ensure old versions of Docker are not installed.
+  package:
+    name:
+      - docker
+      - docker-engine
+    state: absent
+
+- name: Ensure dependencies are installed.
+  apt:
+    name:
+      - apt-transport-https
+      - ca-certificates
+    state: present
+
+
+# - name: Ensure additional dependencies are installed (on Ubuntu < 20.04 and any other systems).
+#   apt:
+#     name: gnupg2
+#     state: present
+#   when: ansible_distribution != 'Ubuntu' or ansible_distribution_version is version('20.04', '<')
+
+- name: Ensure additional dependencies are installed (on Ubuntu >= 20.04).
+  apt:
+    name: gnupg
+    state: present
+
+- name: Add Docker apt key.
+  ansible.builtin.get_url:
+    url: "https://download.docker.com/linux/{{ ansible_distribution | lower }}/gpg"
+    dest: /etc/apt/trusted.gpg.d/docker.asc
+    mode: '0644'
+    force: true
+  ignore_errors: true
+  
+
+- name: Add Docker repository.
+  apt_repository:
+    repo: "{{ docker_apt_repository }}"
+    state: present
+    update_cache: true
+
diff --git a/1. Containerization/Le Van Chien/ansible/roles/db/defaults/main.yaml b/2.Ansible/LeVanChien/roles/db/defaults/main.yaml
similarity index 54%
rename from 1. Containerization/Le Van Chien/ansible/roles/db/defaults/main.yaml
rename to 2.Ansible/LeVanChien/roles/db/defaults/main.yaml
index 5cf257863..249acca30 100644
--- a/1. Containerization/Le Van Chien/ansible/roles/db/defaults/main.yaml	
+++ b/2.Ansible/LeVanChien/roles/db/defaults/main.yaml
@@ -1,6 +1,5 @@
 user: lechiennn
-source_folder: ../db
-dest_folder: "/home/{{ user }}/test/"
+path_to_db: "/home/{{ user }}/test/db"
 
 image_name: mongo:5.0
 
@@ -8,6 +7,6 @@ container_name: db
 
 container_state: started
 volumes:
-  - "{{ dest_folder }}/db:/data/db"
+  - "{{ path_to_db }}:/data/db"
 
 network_name: net
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/ansible/roles/db/tasks/main.yaml b/2.Ansible/LeVanChien/roles/db/tasks/main.yaml
similarity index 73%
rename from 1. Containerization/Le Van Chien/ansible/roles/db/tasks/main.yaml
rename to 2.Ansible/LeVanChien/roles/db/tasks/main.yaml
index 75f737e9a..2158c750b 100644
--- a/1. Containerization/Le Van Chien/ansible/roles/db/tasks/main.yaml	
+++ b/2.Ansible/LeVanChien/roles/db/tasks/main.yaml
@@ -1,9 +1,8 @@
-- name: copy resources from host
-  copy:
-    src: "{{ source_folder }}"
-    dest: "{{ dest_folder }}"
-    force: false
-
+- name: create db folder
+  file:
+    path: "{{ path_to_db }}"
+    state: directory
+    
 - name: create Docker network
   community.docker.docker_network:
     name: "{{ network_name }}"
diff --git a/2.Ansible/LeVanChien/roles/lb/defaults/main.yaml b/2.Ansible/LeVanChien/roles/lb/defaults/main.yaml
new file mode 100644
index 000000000..34ae0f20f
--- /dev/null
+++ b/2.Ansible/LeVanChien/roles/lb/defaults/main.yaml
@@ -0,0 +1,16 @@
+user: lechiennn
+path_to_folder: "/home/{{ user }}/test/lb"
+
+image_name: lb
+image_state: present
+
+container_name: lb
+container_state: started
+
+ports:
+  - "8080:80"
+
+volumes: 
+  - "{{ path_to_folder }}/nginx.conf:/etc/nginx/nginx.conf"
+  - "{{ path_to_folder }}/log:/var/log/nginx"
+network_name: net
diff --git a/2.Ansible/LeVanChien/roles/lb/files/Dockerfile b/2.Ansible/LeVanChien/roles/lb/files/Dockerfile
new file mode 100644
index 000000000..e197ebcfd
--- /dev/null
+++ b/2.Ansible/LeVanChien/roles/lb/files/Dockerfile
@@ -0,0 +1,2 @@
+FROM nginx:1.22.0-alpine
+COPY ./nginx.conf /etc/nginx/nginx.conf
\ No newline at end of file
diff --git a/2.Ansible/LeVanChien/roles/lb/files/nginx.conf b/2.Ansible/LeVanChien/roles/lb/files/nginx.conf
new file mode 100644
index 000000000..5af1b2281
--- /dev/null
+++ b/2.Ansible/LeVanChien/roles/lb/files/nginx.conf
@@ -0,0 +1,13 @@
+events {}
+http {
+	upstream server {
+		server nginx1:80;
+		server nginx2:80;
+	}
+	server {
+		listen 80;
+		location / {
+			proxy_pass http://server;
+		}
+	}
+}
diff --git a/1. Containerization/Le Van Chien/ansible/roles/api/tasks/main.yaml b/2.Ansible/LeVanChien/roles/lb/tasks/main.yaml
similarity index 60%
rename from 1. Containerization/Le Van Chien/ansible/roles/api/tasks/main.yaml
rename to 2.Ansible/LeVanChien/roles/lb/tasks/main.yaml
index ee05b2f82..45afc42b9 100644
--- a/1. Containerization/Le Van Chien/ansible/roles/api/tasks/main.yaml	
+++ b/2.Ansible/LeVanChien/roles/lb/tasks/main.yaml
@@ -1,8 +1,15 @@
-- name: copy resources from host
+- name: create lb folder
+  file:
+    path: "{{ path_to_folder }}/log"
+    state: directory
+
+- name: copy dockerfile and nginx config
   copy:
-    src: "{{ source_folder }}"
-    dest: "{{ dest_folder }}"
-    force: false
+    src: "{{ item }}"
+    dest: "{{ path_to_folder }}"
+  loop:
+    - nginx.conf
+    - Dockerfile
 
 - name: build Docker Image
   docker_image: 
@@ -10,11 +17,8 @@
     state: "{{ image_state }}"
     source: build
     build:
-      path: "{{ resources_path }}"
+      path: "{{ path_to_folder }}"
   
-- name: create Docker network
-  community.docker.docker_network:
-    name: "{{ network_name }}"
 
 - name: run Docker container
   community.docker.docker_container:
diff --git a/2.Ansible/LeVanChien/roles/web/defaults/main.yaml b/2.Ansible/LeVanChien/roles/web/defaults/main.yaml
new file mode 100644
index 000000000..217314f3d
--- /dev/null
+++ b/2.Ansible/LeVanChien/roles/web/defaults/main.yaml
@@ -0,0 +1,13 @@
+image_name: lechiennn/web:v1.2
+
+container_name_1: nginx1
+container_name_2: nginx2
+
+ports_1:
+  - "8081:80"
+
+ports_2:
+  - "8082:80"
+container_state: started
+
+network_name: net
\ No newline at end of file
diff --git a/2.Ansible/LeVanChien/roles/web/tasks/main.yaml b/2.Ansible/LeVanChien/roles/web/tasks/main.yaml
new file mode 100644
index 000000000..97ef2a730
--- /dev/null
+++ b/2.Ansible/LeVanChien/roles/web/tasks/main.yaml
@@ -0,0 +1,17 @@
+- name: run Docker container web 1
+  community.docker.docker_container:
+    name: "{{ container_name_1 }}"
+    image: "{{ image_name }}"
+    state: "{{ container_state }}"
+    # ports: "{{ ports_1 }}"
+    networks:
+      - name: "{{ network_name }}"
+
+- name: run Docker container web 2
+  community.docker.docker_container:
+    name: "{{ container_name_2 }}"
+    image: "{{ image_name }}"
+    state: "{{ container_state }}"
+    # ports: "{{ ports_2 }}"
+    networks:
+      - name: "{{ network_name }}"
\ No newline at end of file
diff --git a/1. Containerization/Le Van Chien/ansible/setup.yaml b/2.Ansible/LeVanChien/setup.yaml
similarity index 83%
rename from 1. Containerization/Le Van Chien/ansible/setup.yaml
rename to 2.Ansible/LeVanChien/setup.yaml
index 6dd05bb87..8a51a442c 100644
--- a/1. Containerization/Le Van Chien/ansible/setup.yaml	
+++ b/2.Ansible/LeVanChien/setup.yaml
@@ -4,7 +4,9 @@
   become: true
   gather_facts: true
   roles:
-    - web
-    - api
+    - common
     - db
+    - api
+    - web
+    - lb
   
\ No newline at end of file
diff --git a/5. Kubernetes/LeVanChien/README.md b/5. Kubernetes/LeVanChien/README.md
new file mode 100644
index 000000000..d5696df54
--- /dev/null
+++ b/5. Kubernetes/LeVanChien/README.md	
@@ -0,0 +1,216 @@
+# Kubernetes lab
+## 0. Install KinD
+```bash
+[ $(uname -m) = x86_64 ] && curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.19.0/kind-linux-amd64
+[ $(uname -m) = aarch64 ] && curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.19.0/kind-linux-arm64
+chmod +x ./kind
+sudo mv ./kind /usr/local/bin/kind
+```
+## 1. Create cluster
+- File config to create cluster with 1 control-plane and 3 workers
+```yaml
+#kind-config.yaml
+kind: Cluster
+apiVersion: kind.x-k8s.io/v1alpha4
+nodes:
+- role: control-plane
+- role: worker
+- role: worker
+- role: worker
+```
+- Command to create cluster
+```bash
+kind create cluster --config kind-config.yaml
+```
+- Get bash shell in kind control-plane container
+```bash
+docker exec -it kind-control-plane bash
+```
+Cluster now have 4 nodes:
+![](images/getnode.png)
+
+- Labeling nodes
+```bash
+kubectl label nodes kind-worker node-type=server
+kubectl label nodes kind-worker2 node-type=server
+kubectl label nodes kind-worker3 node-type=db
+```
+## 2. Create PersistentVolume and PersistentVolumeClaims
+`PersistentVolume` with `persistentVolumeReclaimPolicy` = `retain` allows me to retain the data stored in PersistentVolume after the associated service is deleted.
+
+```yaml
+#create pv
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: pv
+spec:
+  capacity:
+    storage: 5Mi
+  volumeMode: Filesystem
+  persistentVolumeReclaimPolicy: Retain
+  storageClassName: standard
+  accessModes:
+    - ReadWriteOnce
+  hostPath:
+    path: /data
+```
+PersistentVolumeClaims requests and uses a specific amount of storage resources from a Kubernetes cluster.
+```yaml
+# create persistent volume claim
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: pvc
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 5Mi
+  volumeName: pv
+```
+## 3. Create database deployment
+- Database container will be deployed at a node whose node-type=db by using `nodeSelector`.
+```yaml
+# create db deployment
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: db-deployment
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: db
+  template:
+    metadata:
+      labels:
+        app: db
+    spec:
+      nodeSelector: 
+        node-type: db
+      containers:
+      - name: db
+        image: mongo:5.0
+        ports:
+        - containerPort: 27017
+        volumeMounts:
+            - name: mongodb-data-volume
+              mountPath: /data/db
+      volumes:
+      - name: mongodb-data-volume
+        persistentVolumeClaim:
+            claimName: pvc
+```
+- Create db Service, expose within the cluster.
+```yaml
+apiVersion: v1
+kind: Service
+metadata:
+  name: db
+spec:
+  selector:
+    app: db
+  ports:
+    - protocol: TCP
+      port: 27017
+      targetPort: 27017
+```
+## 4. Create API deployment
+- Deploy api server with multiple replicas (2) on 2 nodes with node-type=server by using `nodeSelector` and setting `replicas: 2`.
+```yaml
+# create api deployment
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: api-deployment
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: api
+  template:
+    metadata:
+      labels:
+        app: api
+    spec:
+      nodeSelector: 
+        node-type: server
+      containers:
+      - name: api
+        image: lechiennn/app:v.k8s.1
+        ports:
+        - containerPort: 5000
+```
+- Create api Service, expose within the cluster.
+```yaml
+apiVersion: v1
+kind: Service
+metadata:
+  name: api
+spec:
+  selector:
+    app: api
+  ports:
+    - protocol: TCP
+      port: 5000
+      targetPort: 5000 
+```
+## 5. Create web service
+- Deploy web server with multiple replicas (2) on 2 nodes with node-type=server by using `nodeSelector` and setting `replicas: 2`.
+
+```yaml
+# create web deployment
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: web-deployment
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: web
+  template:
+    metadata:
+      labels:
+        app: web
+    spec:
+      nodeSelector: 
+        node-type: server
+      containers:
+      - name: web
+        image: lechiennn/web:v.k8s.1
+        ports:
+        - containerPort: 80
+```
+- Create api Service, expose to outside the cluster (with `type=NodePort`).
+
+```yaml
+apiVersion: v1
+kind: Service
+metadata:
+  name: web-service
+spec:
+  selector:
+    app: web
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 80
+  type: NodePort    
+```
+## 6. Testing
+Both `web` and `api` are running on each server node (node-type=server) (i.e. 1 web and 1 API on Node 1, and 1 web and 1 API on Node 2) to provide redundancy and fault tolerance.
+`database` is connected with PVC and running on db node (node-type=db).
+
+![](images/getpod.png)
+
+Service `web` can be access from outside the cluster via port `31178`.
+![](images/getservice.png)
+
+Visit http://172.18.0.3:31178/
+![](images/web.png)
+
+Try searching sth to make sure the web server can communicate with api server and retrieve data from database.
+![](images/search.png)
\ No newline at end of file
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diff --git a/5. Kubernetes/LeVanChien/kind-config.yaml b/5. Kubernetes/LeVanChien/kind-config.yaml
new file mode 100644
index 000000000..077f8d0d1
--- /dev/null
+++ b/5. Kubernetes/LeVanChien/kind-config.yaml	
@@ -0,0 +1,11 @@
+kind: Cluster
+apiVersion: kind.x-k8s.io/v1alpha4
+nodes:
+- role: control-plane
+  image: kindest/node:v1.22.0
+- role: worker
+  image: kindest/node:v1.22.0
+- role: worker
+  image: kindest/node:v1.22.0
+- role: worker
+  image: kindest/node:v1.22.0
diff --git a/5. Kubernetes/LeVanChien/yamlfile/PVC.yaml b/5. Kubernetes/LeVanChien/yamlfile/PVC.yaml
new file mode 100644
index 000000000..786d5d5ab
--- /dev/null
+++ b/5. Kubernetes/LeVanChien/yamlfile/PVC.yaml	
@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: pvc
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 5Mi
+  volumeName: pv
\ No newline at end of file
diff --git a/5. Kubernetes/LeVanChien/yamlfile/apiDeployment.yaml b/5. Kubernetes/LeVanChien/yamlfile/apiDeployment.yaml
new file mode 100644
index 000000000..5c3e55a25
--- /dev/null
+++ b/5. Kubernetes/LeVanChien/yamlfile/apiDeployment.yaml	
@@ -0,0 +1,21 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: api-deployment
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: api
+  template:
+    metadata:
+      labels:
+        app: api
+    spec:
+      nodeSelector: 
+        node-type: server
+      containers:
+      - name: api
+        image: lechiennn/app:v.k8s.1
+        ports:
+        - containerPort: 5000
\ No newline at end of file
diff --git a/5. Kubernetes/LeVanChien/yamlfile/apiService.yaml b/5. Kubernetes/LeVanChien/yamlfile/apiService.yaml
new file mode 100644
index 000000000..51df45f48
--- /dev/null
+++ b/5. Kubernetes/LeVanChien/yamlfile/apiService.yaml	
@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: api
+spec:
+  selector:
+    app: api
+  ports:
+    - protocol: TCP
+      port: 5000
+      targetPort: 5000 
\ No newline at end of file
diff --git a/5. Kubernetes/LeVanChien/yamlfile/dbDeployment.yaml b/5. Kubernetes/LeVanChien/yamlfile/dbDeployment.yaml
new file mode 100644
index 000000000..3264c1b63
--- /dev/null
+++ b/5. Kubernetes/LeVanChien/yamlfile/dbDeployment.yaml	
@@ -0,0 +1,28 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: db-deployment
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: db
+  template:
+    metadata:
+      labels:
+        app: db
+    spec:
+      nodeSelector: 
+        node-type: db
+      containers:
+      - name: db
+        image: mongo:5.0
+        ports:
+        - containerPort: 27017
+        volumeMounts:
+            - name: mongodb-data-volume
+              mountPath: /data/db
+      volumes:
+      - name: mongodb-data-volume
+        persistentVolumeClaim:
+            claimName: pvc
\ No newline at end of file
diff --git a/5. Kubernetes/LeVanChien/yamlfile/dbService.yaml b/5. Kubernetes/LeVanChien/yamlfile/dbService.yaml
new file mode 100644
index 000000000..49dc1f4e8
--- /dev/null
+++ b/5. Kubernetes/LeVanChien/yamlfile/dbService.yaml	
@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: db
+spec:
+  selector:
+    app: db
+  ports:
+    - protocol: TCP
+      port: 27017
+      targetPort: 27017
\ No newline at end of file
diff --git a/5. Kubernetes/LeVanChien/yamlfile/persistentVolume.yaml b/5. Kubernetes/LeVanChien/yamlfile/persistentVolume.yaml
new file mode 100644
index 000000000..e9866c849
--- /dev/null
+++ b/5. Kubernetes/LeVanChien/yamlfile/persistentVolume.yaml	
@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: pv
+spec:
+  capacity:
+    storage: 5Mi
+  volumeMode: Filesystem
+  persistentVolumeReclaimPolicy: Retain
+  storageClassName: standard
+  accessModes:
+    - ReadWriteOnce
+  hostPath:
+    path: /data
\ No newline at end of file
diff --git a/5. Kubernetes/LeVanChien/yamlfile/webDeployment.yaml b/5. Kubernetes/LeVanChien/yamlfile/webDeployment.yaml
new file mode 100644
index 000000000..a7c273301
--- /dev/null
+++ b/5. Kubernetes/LeVanChien/yamlfile/webDeployment.yaml	
@@ -0,0 +1,21 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: web-deployment
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: web
+  template:
+    metadata:
+      labels:
+        app: web
+    spec:
+      nodeSelector: 
+        node-type: server
+      containers:
+      - name: web
+        image: lechiennn/web:v.k8s.1
+        ports:
+        - containerPort: 80
\ No newline at end of file
diff --git a/5. Kubernetes/LeVanChien/yamlfile/webService.yaml b/5. Kubernetes/LeVanChien/yamlfile/webService.yaml
new file mode 100644
index 000000000..aafeb443a
--- /dev/null
+++ b/5. Kubernetes/LeVanChien/yamlfile/webService.yaml	
@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: web-service
+spec:
+  selector:
+    app: web
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 80
+  type: NodePort    
\ No newline at end of file