atorrescogollo / k0s-poc

k0s as a Service (PoC)

k0s PoC

Deploy k0s as a Service (PoC).

First steps

git clone [e-mail]:kubernetes-sigs/kubespray.git
git clone [e-mail]:movd/k0s-ansible.git
git clone [e-mail]:atorrescogollo/k0s-poc.git
cd k0s-poc/
export CLUSTER_NAME=cluster01

Create the infra

In order to create a production ready cluster infraestructure, we can take advantage from kubespray terraform section.

Openstack infra with kubespray

# Create custom infra definition
mkdir -p inventory/$CLUSTER_NAME/group_vars
cd inventory/$CLUSTER_NAME/
cp -vL ../../../kubespray/contrib/terraform/openstack/hosts .
cp -v ../../../kubespray/contrib/terraform/openstack/sample-inventory/cluster.tfvars .
ln -svf ../../scripts/k0sinventory.sh .

# EDIT the cluster.tfvars file as described in:
#   https://github.com/kubernetes-sigs/kubespray/blob/master/contrib/terraform/openstack/README.md
vim cluster.tfvars

TIP: Check this example.

# Prepare OpenStack cloud config:
#   https://github.com/kubernetes-sigs/kubespray/blob/master/contrib/terraform/openstack/README.md#openstack-access-and-credentials
export OS_CLOUD=k0s

# Deploy the infra (tested with Terraform v0.13.7)
terraform init ../../../kubespray/contrib/terraform/openstack
terraform apply -var-file=cluster.tfvars ../../../kubespray/contrib/terraform/openstack

# Check reachability
export ANSIBLE_HOST_KEY_CHECKING=False
ansible all -i ./k0sinventory.sh -m ping

Bootstrap k0s with k0s-ansible

# Bootstrap the cluster with k0s-ansible
ansible-playbook -i ./k0sinventory.sh ../../../k0s-ansible/site.yml