terraform-kvm-kubespray

Set up Kubernetes cluster using KVM, Terraform and Kubespray

Requirements

• Git
• Ansible >= v2.6
• Terraform == v0.12.x
• KVM - Kernel Virtual Machine
• Internet connection on machine that will run VMs and on VMs

Usage

Create cluster

Move to main directory:

cd terraform-kvm-kubespray

Change variables to fit your needs:

nano terraform.tfvars

Execute terraform script:

# Initializes terraform project
terraform init

# Shows what is about to be done
terraform plan

# Runs/creates project
terraform apply

Note: Installation proccess can take up to 20 minutes.

Add worker to cluster

In terraform.tfvars file add:

• MAC address for new VM to vm_worker_macs and
• IP address for new VM to vm_worker_ips.

Note: MAC and IP addresses for certain VM have to be on same index in array.

Execute terraform script to add worker:

terraform apply -var 'action=add_worker'

Remove worker from cluster

• TBD - (Not tested yet)

Upgrade cluster

In terraform.tfvars file modify:

• k8s_kubespray_version and
• k8s_version.

Execute terraform script to upgrade cluster:

terraform apply -var 'action=upgrade'

Credits

This script is modified to work with KVM instead of vSphere.

Script that works on vSphere can be found here.

Info/Issues

In case you found a bug or dysfunctionality please open an issue.

If you need anything else contact me on GitHub.