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Hack-05 Kubenetes cluster operation and applications deployment

Display parameter

echo $rg
echo $aksvnet
echo $akssubnet
echo $vnetaddress
echo $vnetsubnet
echo $akscluster
echo $acr
echo $acrserver
echo $middleserver

How to initialize?

Kubenetest basic commands

Previous step : Create AKS on VNET

  • Get AKS context
kubectl config get-contexts
#kubectl config use-context CONTEXT_NAME
  • Get AKS Pods, Services and Deployments
kubectl get pods
kubectl get services
kubectl get deployments
  • Push Docker image to ACR
docker images

docker tag multi-wfe $acrserver/multi-wfe:v1
docker push $acrserver/multi-wfe:v1

az acr repository list --name $acr --output table
az acr repository show-tags --name $acr --repository multi-wfe --output table

Working with deployment file

Review deployment file wfe-aks.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: multi-wfe
spec:
  replicas: 3
  selector:
    matchLabels:
      app: multi-wfe
  template:
    metadata:
      labels:
        app: multi-wfe
    spec:
      containers:
      - name: multi-wfe
        image: azsmi15acr.azurecr.io/multi-wfe:v1
        resources:
          requests:
            cpu: 100m
            memory: 128Mi
          limits:
            cpu: 250m
            memory: 256Mi
        ports:
        - containerPort: 80
        env:
        - name: middleserver
          value: "smi15middle.southeastasia.cloudapp.azure.com"
---
apiVersion: v1
kind: Service
metadata:
  name: multi-wfe
spec:
  type: LoadBalancer
  ports:
  - port: 8082
  selector:
    app: multi-wfe

Replace ACR container image to your acr server

echo $acrserver

*** Ignore middleserver URL, we will cover it later ***

Deploy application

kubectl apply -f wfeAKS.yaml
# kubectl delete all --selector app=multi-wfe
kubectl get pods
kubectl get services

Create Ubuntu VM and deploy Middle server

  • Quickstart: Create a Linux virtual machine in the Azure portal Link

  • Deploy Middle server into this VM

SSH into VM

git clone https://github.com/SmithMMTK/DevOpsHack 

cd /DevOpsHack/sources/middle
npm init -y
npm install -y
run app.js

Change Middle server connection IP Address

  • Switch desktop and get Ubuntu server IP Address
az vm list -d -o table
  • Allow incomming request to PORT 3000

href

Reference

  • Modify deployment file wfe-aks.yaml in middle server portion to reflect to VM IP address
        - name: middleserver
          value: "smi15middle.southeastasia.cloudapp.azure.com"
  • Redeploy to AKS
kubectl apply -f wfe-aks.yaml

Optional (Deploy internal loadbalance by VNET IP address)

Review deployment file wfe-aks-vnet.yaml

spec:
  loadBalancerIP: 192.168.1.100
  type: LoadBalancer
  ports:
  - port: 8082
  selector:
    app: multi-wfe
kubectl apply -f wfe-aks-vnet.yaml

Optional Hack

Create Deployment file and deploy middle to cluster