multi-cloud-kubernetes

This is example code for how I deploy a cross cloud Kubernetes cluster to my home openstack, ramnode openstack, and digital ocean.

Run

Set ENVS on test.env

1. DIGITALOCEAN_ACCESS_TOKEN - api token to interact with Digital Ocean. Used by terraform-code/digitalocean.tf
2. RAMNODE_USERNAME - ramnode openstack username. Used by terraform-code/ramnode.tf
3. RAMNODE_PASSWORD - ramnode openstack password. Used by terraform-code/ramnode.tf
4. HOME_USERNAME - home openstack username. Used by terraform-code/home.tf
5. HOME_PASSWORD - home openstack password. Used by terraform-code/home.tf
6. ZEROTIER_NETWORK - zerotier network id. Used by terraform-code/user-data.sh
7. CLOUDFLARE_API - cloudflare api token. Used by ansible/roles/kubernetes/templates/cloudflare-updater.yaml to be passed to the cloudflare updater pod.
8. LONGHORN_USERNAME - any username you want to use for basic auth http for longhorn. Used by ansible/roles/longhorn/templates/longhorn-ingress.yaml. Basic auth created by bin/longhorn-basic-auth.sh
9. LONGHORN_PASSWORD - any password you want to use for basic auth http for longhorn. Used by ansible/roles/longhorn/templates/longhorn-ingress.yaml. Basic auth created by bin/longhorn-basic-auth.sh

Then run source test.env

NOTES

1. My personal domain (codywimer.com) is hard coded throughout this project. If replicating, you'll have to change this.
2. My home openstack cloud and ramnodes openstack envs are hard coded in terraform-code/home.tf and terraform-code/ramnode.tf

Deploy

make deploy

This will take your ENV's, pass them to terraform and ansible (see bin/deploy.sh) and do the following:

1. Install terraform in this repo
2. Run terraform to deploy cloud resources. Instances will be pre-configured via terraform-code/user-data.sh and use a Debian 10 cloud image.
3. Terraform will ouput an ansible inventory to hosts.cfg
4. Ansible will be run to deploy Kubernetes via RKE. It will create the rke directory where you will find rke/kube_config_rke-k8s.yaml to run kubectl commands after Kubernetes is deployed.

Deploy Notes

1. The rke directory contains your kube config file as stated above, a state file rke uses when configuring, rke/rke-k8s.yaml which is the rke cluster config, rke/auth which is the Kubernetes secret for http basic auth for Longhorn, the rke/configs directory which has default resources deployed into Kubernetes, and the rke/lonhorn directory which has the Longhorn configs.
2. The Terraform state file is located at terraform-code/terraform.tfstate

Destroy

make destroy