Build infrastructure K8s cluster (Azure)

expected time	requirements
60 minutes	a computer

Goal: Learn how to create Azure K8s resources on Azure using Terraform.

Explanation

A Kubernetes cluster consists of many components. Creating one “manually” is time consuming and error prone.

Using Terraform to deploy a azurerm_kubernetes_cluster resource is quite simple.

Howto

Use azurerm_kubernetes_cluster to setup a K8s cluster. The documentation is a great starting point.

Demo

See this example repository.

Assignment

Use the sample code above and change these settings:

• Use the default as described in the documentation.
• Spin up the K8s cluster.
• Change the VM size from Standard_D2_v2 to Standard_D4_v2.
• Apply the code again.
• Make sure the cluster has a node_count of 3.
• Apply the code once mode.

View the results

Azure Portal

Questions

1. What would be a realistic node_count?
2. What vm_size would be good?
3. Was the cluster updated or recreated when changing the vm_size?
4. Was the cluster updated or recreated when changing the node_count?