Create AKS Cluster

Step-01: Introduction

• Understand about AKS Cluster
• Discuss about Kubernetes Architecture from AKS Cluster perspective

Step-02: Create AKS Cluster

• Create Kubernetes Cluster
• Basics
  • Subscription: Free Trial
  • Resource Group: Creat New: aks-rg1
  • Kubernetes Cluster Name: aksdemo1
  • 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
  • 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: Cloud Shell - Configure kubectl to connect to AKS Cluster

• Go to https://shell.azure.com

# Template
az aks get-credentials --resource-group <Resource-Group-Name> --name <Cluster-Name>

# Replace Resource Group & Cluster Name
az aks get-credentials --resource-group aks-rg1 --name aksdemo1

# List Kubernetes Worker Nodes
kubectl get nodes 
kubectl get nodes -o wide

Step-04: Explore Cluster Control Plane and Workload inside that

# List Namespaces
kubectl get namespaces
kubectl get ns

# List Pods from all namespaces
kubectl get pods --all-namespaces

# List all k8s objects from Cluster Control plane
kubectl get all --all-namespaces

Step-05: Explore the AKS cluster on Azure Management Console

• Explore the following features on high-level
• Overview
  • Activity Log
  • Access Control (IAM)
  • Security
  • Diagnose and solver problems
• Settings
  • Node Pools
  • Upgrade
  • Scale
  • Networking
  • DevSpaces
  • Deployment Center
  • Policies
• Monitoring
  • Insights
  • Alerts
  • Metrics
  • and many more
• VM Scale Sets
  • Verify Azure VM Instances
  • Verify if Enhanced Networking is enabled or not

Step-06: Local Desktop - Install Azure CLI and Azure AKS CLI

# Install Azure CLI (MAC)
brew update && brew install azure-cli

# Login to Azure
az login

# Install Azure AKS CLI
az aks install-cli

# Configure Cluster Creds (kube config)
az aks get-credentials --resource-group aks-rg1 --name aksdemo1

# List AKS Nodes
kubectl get nodes 
kubectl get nodes -o wide

• Reference Documentation Links
• https://docs.microsoft.com/en-us/cli/azure/?view=azure-cli-latest
• https://docs.microsoft.com/en-us/cli/azure/aks?view=azure-cli-latest

Step-07: Deploy Sample Application and Test

• Don't worry about what is present in these two files for now.
• By the time we complete Kubernetes Fundamentals sections, you will be an expert in writing Kubernetes manifest in YAML.
• For now just focus on result.

# Deploy Application
kubectl apply -f kube-manifests/

# Verify Pods
kubectl get pods

# Verify Deployment
kubectl get deployment

# Verify Service (Make a note of external ip)
kubectl get service

# Access Application
http://<External-IP-from-get-service-output>

Step-07: Clean-Up

# Delete Applications
kubectl delete -f kube-manifests/

References

• https://docs.microsoft.com/en-us/cli/azure/install-azure-cli-macos?view=azure-cli-latest

Why Managed Identity when creating Cluster?

• https://docs.microsoft.com/en-us/azure/aks/use-managed-identity