WordPress on AKS and Azure Mysql with Terraform

Connect to Azure

az login

Azure list connections

az account list -o table
Name                      CloudName    SubscriptionId    TenantId                    
------------------------  -----------  --------------    --------
Customer1                 AzureCloud   *****-*****-***** ***-***
Azure Pass - Sponsorship  AzureCloud   *****-*****-***** ***-***

You can filter single subscription – add in the main.tf filter the subscription and tenant ID

Check SKU for managed Azure Mysql target

az mysql server list-skus --location westeurope -o table

Put SKU name value on database.tf

Check terraform state list

terraform state list

Remove all terraform state (if you redeploy the same test resources how in this case)

terraform state list | cut -f 1 -d '[' | xargs -L 1  terraform state rm

Start and apply Terraform

terraform init
terraform plan -out main.tfplan

Go Terraform and take a coffee!

terraform apply main.tfplan

Azure list resources on “wordpress” Resource Group

az resource list -g wordpress -o table

Terraform output the public IP and we can check on web browser if all is ok

Configure kubectl

az aks get-credentials --resource-group wordpress --name wordpress

Check if pods are up & running

kubectl get pod -o wide

Check Horizontal Replica Set settings (previously configured in deployment.tf)

kubectl get hpa -A

Run load generator to stress cluster

kubectl run -i --tty load-generator --rm --image=busybox --restart=Never -- /bin/sh -c "while sleep 0.01; do wget -q -O- http://20.231.113.103; done"

Automatic Horizontal Replica running..

kubectl get pods --watch

kubectl get hpa --watch

CTRL + C to block load generator

Numbers of pods back to normal operations

Destroy all

terraform plan -destroy -out main.destroy.tfplan
terraform apply main.destroy.tfplan