Creation of a simple Kubernetes cluster with Ansible

The create-k8s-basic directory contains an ansible playbook (k8s_create.yaml) that may be used to create a simple 3-node kubernetes cluster using the latest stable version of kubernetes and the containerd runtime. Based on the Ansible Playbook created by CyberGavin. The original repo can be found here: https://github.com/cybergavin/kubernetes

Pre-Requisites

• Three pre-provisioned RHEL 8 nodes with connectivity to the Internet to download packages and images from repositories and registries.
• A user account (srv-admin in my playbook) with sudo (root) privileges provisioned on the ansible control node and all RHEL 8 nodes. Also ensure that the user’s SSH keys are set up to allow execution of the ansible playbook.

Implementation

• Set the following values in /vars/main.yaml:

  • pod_network This is the network to use for your pods
  • service_network This is the network to use for services
  • control_plane_endpoint This is the URL for your cluster
  • k8s_version The version of Kubernetes to install

• Add details for the pre-provisioned RHEL 8 nodes to the files/inventory

• Execute the following command:

  ansible-playbook -i files/inventory k8s_create.yaml -e 'ansible_become_pass=PASS=GOES-HERE'