WorkingWithTheKubernetesCLI

Working with the Kubernetes CLI

Open the terminal in VS Code

Locate the file under 'Source/YAML/YAML-CommandLine/scripts.sh' right click and Open in Terminal

Conntect to your AKS Cluster

In the Azure Portal open the overview page of the AKS Service and click on 'View Kubernetes Dashboard' and run the get credentials command in your terminal window

Make sure you have previously run az login and are connected to the correct subscription. If not run az account set --subscription {your-subscription-id-here}

Deployment Flow

In these next few steps we will use the Kubernetes CLI to deploy the Pods into AKS using the containers in our public Docker Hub Repo. We will also create config maps and secrets in the cluster from the local config files on our machies and some YAML templates

Why are we using the AzureDemosRepo on Docker Hub

To make this section simple, we have provided a set of YAML templates that can be applied to your cluster with default config values. These YAML templates are using container images in our public Docker Hub repository

This saves you the needing to push images to your registry, as we will cover that in the DevOps pipelines later.

Run the following commands in the Terminal window

Before starting make sure your terminal is running from the 'KubernetesLab\Source\YAML\YAML-CommandLine' folder

Deploy the API to the dev namespace in your cluster

kubectl apply -f ./API/deployment-api.yaml --namespace=dev

Delete any existings secrets for the website

kubectl delete secret website-secret --namespace=dev

Create a new secret for the website from the 'secret-website.json' file

kubectl create secret generic website-secret --from-file=./Website/secret-website.json --namespace=dev

Create or update the json config map

kubectl apply -f ./Website/configmap-website.yaml --namespace=dev

Delete any existing xml config maps

kubectl delete configmap config-xml-website --namespace=dev

Create config map from the 'configmap-website.xml' file

kubectl create configmap config-xml-website --from-file=./Website/configmap-website.xml --namespace=dev

Create or update the website

kubectl apply -f ./Website/deployment-website.yaml --namespace=dev

View the deployed application

Now run the open dashboard command as shown in the portal

A new window should open in your browser with the Kubernetes dashbaord.

1. Select the dev namespace
2. Click Services
3. Wait a minute for the pulic IP Address to be assigned (refresh screen)
4. Open the external enpoint for the website

Finally, clear everything in the dev namespace again

We are not deleting the secrets as we want to keep the 'acr-auth' secret to allow us to pull images from your Azure Container registry later.

kubectl delete daemonsets,replicasets,services,deployments,pods,configmaps,rc --namespace=dev --all

Next Steps

Create Build Pipelines