README.md

Terraform code to provision AKS cluster

Prerequisites

• Azure CLI
• Terraform

Steps to provision AKS cluster

• Login to Azure CLI

  az login

Deploy Terraform

• Initialize Terraform

  terraform init

• Create Terraform plan

  terraform plan -out "aks.plan"

• Apply Terraform plan

  terraform apply "aks.plan"

Variables

Name	Description	Type	Default	Required
app_name	Name of the application	string	n/a	yes
location	Location of the AKS cluster	string	n/a	yes
node_vm_size	Size of the node VMs	string	n/a	yes
node_count	Number of nodes in the cluster	number	n/a	yes

Utilize the AKS cluster

• Connect to the cluster
  Add the credentials to your local kubeconfig file

  az account set --subscription <subscription_id>
  az aks get-credentials --resource-group <resource_group> --name <cluster_name>

• Verify the connection

  $ kubectl get nodes
  
  NAME                              STATUS   ROLES   AGE   VERSION
  aks-default-19374358-vmss000000   Ready    agent   11m   v1.26.6
  aks-default-19374358-vmss000001   Ready    agent   11m   v1.26.6
  aks-default-19374358-vmss000002   Ready    agent   11m   v1.26.6

• Deploy a sample application

  $ kubectl apply -f https://raw.githubusercontent.com/kubernetes/website/master/content/en/examples/application/nginx-app.yaml

  Verify the deployment

  $ kubectl get pods
  NAME                        READY   STATUS    RESTARTS   AGE
  my-nginx-85996f8dbd-pvwxh   1/1     Running   0          3m16s
  my-nginx-85996f8dbd-r6nk9   1/1     Running   0          3m16s
  my-nginx-85996f8dbd-rhzz4   1/1     Running   0          3m16s

• Access the application

  $ kubectl get svc
  NAME           TYPE           CLUSTER-IP    EXTERNAL-IP     PORT(S)        AGE
  kubernetes     ClusterIP      10.0.0.1      <none>          443/TCP        16m
  my-nginx-svc   LoadBalancer   10.0.10.133   <External IP>   80:31663/TCP   3m45

  Access the to view the sample application

Destroy the AKS cluster

• Destroy the Terraform resources

  terraform destroy