Build infrastructure K8s cluster (GCP)

expected time	requirements
60 minutes	a computer

Goal: Learn how to create a K8s cluster on GCP using Terraform.

Explanation

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

Using Terraform to deploy a k8s cluster is quite simple.

Howto

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

Demo

See this example repository.

Assignment

beginner	intermediate
Have a look at the sample repository, clone it, and follow the steps in the README.md.	You’ll manually write Terraform code. Uses these resources.
	1. google_compute_network
	2. google_compute_subnetwork
	3. google_container_cluster
	4. google_container_node_pool

Questions

1. What would be a realistic node_count?
2. Why are there 6 nodes, even though gke_num_nodes is set to 2.
3. What vm_size would be good?
4. Was the cluster updated or recreated when changing the machine_type?
5. Was the cluster updated or recreated when changing the gke_num_nodes?