Log in to Azure and create a ResourceGroup

az login
az group create --name mrg --location eastus

Create a cluster composed of one node:

az aks create --resource-group mrg --name mycluster --node-count 1 --enable-addons monitoring --generate-ssh-keys

Creation will take some time. Another ResourceGroup will be created for resources related to the cluster infrastructure.

Connect the kubectl line client to the Azure Kubernetes cluster:

az aks get-credentials --resource-group mrg --name mycluster

Verify that the connection works:

kubectl get nodes

Cubectl contexts

The kubectl command is able to manage multiple clusters at the same time. He uses so-called contexts for that. If the connection does not work, check the current context:

kubectl config get-contexts

You can change the current context with

kubectl config use-context

Try deploying this trial app:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: azure-vote-back
spec:
  replicas: 1
  selector:
    matchLabels:
      app: azure-vote-back
  template:
    metadata:
      labels:
        app: azure-vote-back
    spec:
      nodeSelector:
        "beta.kubernetes.io/os": linux
      containers:
      - name: azure-vote-back
        image: mcr.microsoft.com/oss/bitnami/redis:6.0.8
        env:
        - name: ALLOW_EMPTY_PASSWORD
          value: "yes"
        resources:
          requests:
            cpu: 100m
            memory: 128Mi
          limits:
            cpu: 250m
            memory: 256Mi
        ports:
        - containerPort: 6379
          name: redis
---
apiVersion: v1
kind: Service
metadata:
  name: azure-vote-back
spec:
  ports:
  - port: 6379
  selector:
    app: azure-vote-back
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: azure-vote-front
spec:
  replicas: 1
  selector:
    matchLabels:
      app: azure-vote-front
  template:
    metadata:
      labels:
        app: azure-vote-front
    spec:
      nodeSelector:
        "beta.kubernetes.io/os": linux
      containers:
      - name: azure-vote-front
        image: mcr.microsoft.com/azuredocs/azure-vote-front:v1
        resources:
          requests:
            cpu: 100m
            memory: 128Mi
          limits:
            cpu: 250m
            memory: 256Mi
        ports:
        - containerPort: 80
        env:
        - name: REDIS
          value: "azure-vote-back"
---
apiVersion: v1
kind: Service
metadata:
  name: azure-vote-front
spec:
  type: LoadBalancer
  ports:
  - port: 80
  selector:
    app: azure-vote-front

This application cannot maintain its state or does not use persistent volumes.

Bibliography

• https://docs.microsoft.com/en-us/azure/aks/kubernetes-walkthrough

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