Azure Kubernets - az cli
Steps to create Azure Kubernet Services (AKS) though azure cli tool.
Demo 1
// Create resource group
az group create --name kbgroup2 --location eastus
// Create AKS cluster
az aks create \
--resource-group kbgroup2 \
--name kbcluster2 \
--node-count 1 \
--enable-addons monitoring \
--generate-ssh-keys
Connect to the cluster
#if you're in Azure Cloud Shell skip this step
az aks install-cli
#getting the credentials
az aks get-credentials \
--resource-group kbgroup2 \
--name kbcluster2
kubectl get nodes
Save the file deployment.yaml with the following contents.
apiVersion: apps/v1beta1
kind: Deployment
metadata:
name: azure-vote-back
spec:
replicas: 1
template:
metadata:
labels:
app: azure-vote-back
spec:
nodeSelector:
"beta.kubernetes.io/os": linux
containers:
- name: azure-vote-back
image: redis
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/v1beta1
kind: Deployment
metadata:
name: azure-vote-front
spec:
replicas: 1
strategy:
rollingUpdate:
maxSurge: 1
maxUnavailable: 1
minReadySeconds: 5
template:
metadata:
labels:
app: azure-vote-front
spec:
nodeSelector:
"beta.kubernetes.io/os": linux
containers:
- name: azure-vote-front
image: microsoft/azure-vote-front:v1
ports:
- containerPort: 80
resources:
requests:
cpu: 250m
limits:
cpu: 500m
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
Deploy the application
// Get a list of cluster nodes
kubectl get nodes
// Run the application
kubectl apply –f deployment.yaml
Monitor progress of the deployment
// Monitor progress of the deployment
kubectl get service azure-vote-front --watch
// View pods related to this deployment
kubectl get pods -l app=azure-vote-front
Demo 2 (Create an ACR account though Azure CLI)
// Create an ACR instance
az acr create \
--resource-group kbgroup2 \
--name acrdemo002 \
--sku Basic
// Login to ACR
az acr login --name acrdemo002
Build Image to publish to ACR
// Pull existing Docker image
docker pull microsoft/aci-helloworld
// Obtain the full login server name of the ACR instance
az acr list --resource-group kbgroup2 --query "[].{acrLoginServer:loginServer}" --output table
// Tag image with full login server name prefix
docker tag microsoft/aci-helloworld <acrLoginServer>/aci-helloworld:v1
// login into acr
az acr login
// Push image to ACR
docker push <acrLoginServer>/aci-helloworld:v1
View deployment images
// List container images
az acr repository list --name acrdemo002 --output table
// List the tags on the aci-helloworld repository
az acr repository show-tags --name acrdemo002 --repository aci-helloworld --output table
Deploy an image to ACR by using Azure CLI
// Enable admin user
az acr update --name acrdemo002 --admin-enabled true
// Query for the password
az acr credential show --name acrdemo002 --query "passwords[0].value"
// Deploy container image
az container create --resource-group kbgroup2 --name acr-quickstart --image <acrLoginServer>/aci-helloworld:v1 --cpu 1 --memory 1 --registry-username acrdemo002 --registry-password <acrPassword> --dns-name-label acrdemo002 --ports 80
// View container FQDN
az container show --resource-group kbgroup2 --name acr-quickstart --query instanceView.state
Demo 3 - Create Container from Dockerfile
Run
git clone https://github.com/Azure-Samples/aci-helloworld.git
Build the image
// Build your container
docker build ./aci-helloworld -t aci-tutorial-app
//confirm the builded image
docker images
//something like
//aci-tutorial-app latest 5c745774dfa9 39 seconds ago 68.1 MB
// Run your container locally
docker run -d -p 8080:80 aci-tutorial-app
// View running containers
docker container ls -a
//tag as V2
docker tag aci-tutorial-app:latest acrdemo002.azurecr.io/aci-tutorial-app:v2
//push image to container registr
docker push acrdemo002.azurecr.io/aci-tutorial-app:v2
Deploy to container registry (ACI)
// Get name of container registry login server
az acr show --name acrdemo002 --query loginServer
// Get container registry password
az acr credential show --name acrdemo002 --query "passwords[0].value"
// Deploy container
//<acrLoginServer> and <acrPassword> with the values that you obtained from cmds.
//<acrName> the name of your container registry.
//<aciDnsLabel> with desired DNS name
az container create --resource-group kbgroup2 --name aci-tutorial-app --image <acrLoginServer>/aci-tutorial-app:v2 --cpu 1 --memory 1 --registry-login-server <acrLoginServer> --registry-username <acrName> --registry-password <acrPassword> --dns-name-label <aciDnsLabel> --ports 80
Demo 4 - Implementing an application using Virtual Kublet
// Install Virtual Kubelete connector
az aks install-connector --resource-group kbgroup2 --name kbcluster2 --connector-name virtual-kubelet --os-type Both
Create a virtual-kubelet.yaml
apiVersion: apps/v1beta1
kind: Deployment
metadata:
name: aci-helloworld
spec:
replicas: 1
template:
metadata:
labels:
app: aci-helloworld
spec:
containers:
- name: aci-helloworld
image: microsoft/aci-helloworld
ports:
- containerPort: 80
nodeSelector:
kubernetes.io/hostname: virtual-kubelet-virtual-kubelet-linux
tolerations:
- key: azure.com/aci
effect: NoSchedule
Deploy it
// Validate that Virtual Kubelet has been installed
kubectl get nodes
// Run application (Windos or Linux)
kubectl create -f virtual-kubelet.yaml
// View pods with the scheduled node
kubectl get pods -o wide
Refs.:
https://docs.microsoft.com/en-us/azure/aks/kubernetes-walkthrough-portal#run-the-application
https://docs.microsoft.com/en-us/azure/aks/kubernetes-walkthrough
