Terraform Module to install K0s on Oracle Cloud Infrastructure

This module installs a K0s cluster on Oracle Cloud Infrastructure, using only free tier resources.

Prerequisites

• Terraform v1.4.6 or higher
• k0sctl v0.15.1 or higher
• An account with Oracle Cloud Infrastructure

Usage

Get required variables from OCI: https://docs.oracle.com/en-us/iaas/Content/API/SDKDocs/terraformproviderconfiguration.htm

$ cat provider-vars.profile
export TF_VAR_tenancy_ocid=xxxx
export TF_VAR_user_ocid=xxxxx
export TF_VAR_fingerprint=xxxx
export TF_VAR_private_key_path=./private_key.pem
export TF_VAR_region=eu-marseille-1

Configure the module, see an example in test/main.tf

provider "oci" {
}

module "oci-k0s" {
  source = "../"

  compartment_id  = "ocid1.tenancy.oc1..aaaaaaaa5ii3uidynoqhjub5ub66fm3ryn2my6txw6xrguihckyr2uyarlkq"
  k0s_config_path = "${path.root}/k0sctl.yaml"
}

source provider-vars.profile
terraform init
terraform apply
terraform apply # the second apply is required to get the public IP of the instance
k0sctl apply --disable-telemetry --config k0sctl.yaml

Connect to Kubernetes API

https://docs.k0sproject.io/v1.27.1+k0s.0/FAQ/?h=kubeconfig#how-do-i-connect-to-the-cluster

ssh ubuntu@<public_ip>
sudo su -
kubectl get pods -A

Connect to ArgoCD

echo "Admin password: $(kubectl --kubeconfig kubeconfig -n argocd get secret argocd-initial-admin-secret --template={{.data.password}} | base64 -D)"
kubectl --kubeconfig kubeconfig -n argocd port-forward service/argo-cd-argocd-server 8080:80