Azure Kubernetes Service AKS Virtual Nodes (Serverless)¶

Link to all the Kubernetes Manifests ¶

Step-01: Introduction¶

What is Virtual Kubelet?
What is Azure Container Instances - ACI?
What are AKS Virtual Nodes?
Important Note: Virtual nodes require AKS clusters with Azure CNI networking

Azure Kubernetes Service with Azure DevOps and Terraform¶

Step-02: Create a new cluster using Azure Management Console¶

Basics
Subscription: Free Trial or Pay-as-you-go
Resource Group: Creat New: aks-rg2
Kubernetes Cluster Name: aksdemo2
Region: (US) Central US
Kubernetes Version: Select what ever is latest stable version
Node Size: Standard DS2 v2 (Default one)
Node Count: 1
Node Pools
Virtual Nodes: Enabled
leave to defaults
Authentication
Authentication method: System-assigned managed identity
Rest all leave to defaults
Networking
Network Configuration: Advanced
Network Policy: Azure
Rest all leave to defaults
Integrations
Azure Container Registry: None
leave to defaults
Tags
leave to defaults
Review + Create
Click on Create

Step-03: Verify Nodes & ACI¶

# Configure Command Line Credentials
az aks get-credentials --name aksdemo2 --resource-group aks-rg2

# Verify Nodes
kubectl get nodes 
kubectl get nodes -o wide

# Verify aci-connector-linux
kubectl get pods -n kube-system

# Verify logs of ACI Connector Linux
kubectl logs -f $(kubectl get po -n kube-system | egrep -o 'aci-connector-linux-[A-Za-z0-9-]+') -n kube-system

- We should see virtual-node-aci-linux node also listed for kubectl get nodes output - Sample Output

Kalyans-MacBook-Pro:azure-aks-kubernetes-masterclass kdaida$ kubectl get nodes
NAME                                STATUS   ROLES   AGE   VERSION
aks-agentpool-87689508-vmss000000   Ready    agent   24m   v1.17.11
virtual-node-aci-linux              Ready    agent   21m   v1.14.3-vk-azure-aci-v1.2.1.1
Kalyans-MacBook-Pro:azure-aks-kubernetes-masterclass kdaida$

Step-04: Update Deployment Manifest to Schedule Pod on Virtual Nodes¶

The below section should be added in Deployment for Azure AKS to schedule the pod on Azure Virtual Nodes

Review the manifests

      nodeSelector:
        kubernetes.io/role: agent
        beta.kubernetes.io/os: linux
        type: virtual-kubelet
      tolerations:
      - key: virtual-kubelet.io/provider
        operator: Exists
      - key: azure.com/aci
        effect: NoSchedule

Step-05: Deploy Application Manifests¶

# Deploy
kubectl apply -f kube-manifests/

# Verify pods
kubectl get pods -o wide

# Get Public IP
kubectl get svc

# Access Application
http://<Public-ip-captured-from-get-service>

Step-06: Scale the Deployment¶

# List Deployments
kubectl get deploy

# Scale the Deployment to 10 Replicas
kubectl scale --replicas=10 deployment app1-nginx-deployment

# List Pods
kubectl get pods

Step-07: Clean-Up¶

# Delete Application
kubectl delete -f kube-manifests/

# Delete this new cluster created for Virtual Nodes (if you want to)
az aks delete --name aksdemo2 --resource-group aks-rg2

Azure Kubernetes Service AKS Virtual Nodes (Serverless)¶

Link to all the Kubernetes Manifests ¶

Step-01: Introduction¶

Azure Kubernetes Service with Azure DevOps and Terraform¶

Step-02: Create a new cluster using Azure Management Console¶

Step-03: Verify Nodes & ACI¶

Step-04: Update Deployment Manifest to Schedule Pod on Virtual Nodes¶

Step-05: Deploy Application Manifests¶

Step-06: Scale the Deployment¶

Step-07: Clean-Up¶

References¶

Best Selling Azure Kubernetes Service Course on Udemy ¶

Best Selling AWS EKS Kubernetes Course on Udemy ¶

HashiCorp Certified Terraform Associate - 50 Practical Demos ¶

Azure Kubernetes Service AKS Virtual Nodes (Serverless)¶

Link to all the Kubernetes Manifests¶

Step-01: Introduction¶

Azure Kubernetes Service with Azure DevOps and Terraform¶

Step-02: Create a new cluster using Azure Management Console¶

Step-03: Verify Nodes & ACI¶

Step-04: Update Deployment Manifest to Schedule Pod on Virtual Nodes¶

Step-05: Deploy Application Manifests¶

Step-06: Scale the Deployment¶

Step-07: Clean-Up¶

References¶

Best Selling Azure Kubernetes Service Course on Udemy¶

Best Selling AWS EKS Kubernetes Course on Udemy¶

HashiCorp Certified Terraform Associate - 50 Practical Demos¶

Link to all the Kubernetes Manifests ¶

Best Selling Azure Kubernetes Service Course on Udemy ¶

Best Selling AWS EKS Kubernetes Course on Udemy ¶

HashiCorp Certified Terraform Associate - 50 Practical Demos ¶