rke2

Table of Contents

1. Overview
2. Description
3. Usage - Configuration options and additional functionality
4. Reference - An under-the-hood peek at what the module is doing and how

Overview

RKE2, also known as RKE Government, is Rancher's next-generation Kubernetes distribution.

Description

This module installs rke2 from packages (E.g. a yum repo) and configures the installation via config.yaml.

Important

The rspec-beaker tests timeout / fail under github actions and at not part of an active workflow. The acceptance tests will need to be run manually prior to the merge of PRs.

Usage

Example role defined via hiera.

---
lookup_options:
  rke2::config:
    merge:
      strategy: "deep"
      knockout_prefix: "--"
classes:
  - "rke2"
rke2::config:
  server: "https://%{::cluster}.%{::site}.example.com:9345"
  token: "ENC[PKCS7,...]"
  node-name: "%{facts.hostname}"
  tls-san:
    - "%{::cluster}.%{::site}.example.com"
  node-label:
    - "role=storage-node"
  disable:
    - "rke2-ingress-nginx"
  disable-cloud-controller: true

In this example, a DNS A/AAAA record for %{::cluster}.%{::site}.example.com is required.

If the cluster is being provisioned from scratch. In other words, when there are no pre-existing etcd instances. The server key will need to be manually deleted from /etc/rancher/rke2/config.yaml on one (and only one) node and the rke2-server service restarted. While this key could be knocked on a single node via hiera, if the node without the server key is ever re-provisioned, it would create a new standalone cluster instance which is detached from the existing etcd instances.

Reference

See REFERENCE