k8s upgrade role init

Signed-off-by: Chris Short <[email protected]>

roles/upgrade/tasks/main.yml

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+---
+# tasks file for upgrade
+
+- name: Add Google Cloud Repo Key
+  shell: curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
+
+- name: Add Kubernetes to Available apt Sources
+  template:
+    src: kubernetes.list
+    dest: /etc/apt/sources.list.d/kubernetes.list
+    owner: root
+    group: root
+    mode: 0644
+
+- name: apt-get update
+  apt:
+    update_cache: yes
+    autoclean: yes
+    autoremove: yes
+
+- name: Upgrade kubeadm
+  apt:
+    name: "{{ item }}"
+    state: latest
+  with_items:
+    - kubeadm  
+  delegate_to: master
+
+#- name: Determine latest stable version of Kubernetes
+#  uri:
+#    url: https://dl.k8s.io/release/stable.txt
+#    return_content: yes
+#  register: stable_ver
+- name: Determine latest stable version of Kubernetes
+  shell: curl -sSL https://dl.k8s.io/release/stable.txt
+  register: stable_ver
+
+- name: Upgrade cluster with kubeadm
+  shell: "kubeadm upgrade apply -y {{ stable_ver.stdout }}"
+  delegate_to: master
+
+- name: Cordon Hosts
+  shell: "kubectl cordon {{ inventory_hostname }}"
+  delegate_to: master
+  tags: cordon
+
+- name: Drain Hosts
+  shell: "kubectl drain {{ inventory_hostname }} --ignore-daemonsets"
+  delegate_to: master
+  ignore_errors: yes
+  tags: drain
+
+- name: Upgrade Y'all
+  apt:
+    name: "{{ item }}"
+    state: latest
+  with_items:
+    - kubelet
+    - kubectl
+  tags:
+    - kubelet
+    - kubectl
+
+- name: Uncordon Hosts
+  shell: "kubectl uncordon {{ inventory_hostname }}"
+  delegate_to: master
+  tags: uncordon
+
+- name: Show Nodes
+  shell: kubectl get nodes
+  delegate_to: master

roles/upgrade/templates/kubernetes.list

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+deb http://apt.kubernetes.io/ kubernetes-xenial main

upgrade.yml

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+- hosts: all
+  roles:
+    - upgrade