Puppet module for deploying k8s/kubernetes

Changes from Fork

• Allows kube-apiserver to start without setting the --etcd-cafile, --etcd-certfile, and --etcd-keyfile flags. They are optional and default to undef (this default is different from the original module!).
• Allows enabling the v2 etcd API by setting k8s::server::etcd::setup::enable_v2_api to true.

Table of Contents

• Description
• Usage
• Examples
• Reference

Description

This module installs, configures, and manages a Kubernetes cluster built from loose components.

The main focus is towards the current stable versions of K8s (1.18.x+), but it should be able to handle both older and newer versions without issues.

Usage

Set k8s::server::etcd_servers to a list of servers or k8s::puppetdb_discovery to true.

Setting up a server node (apiserver, controller-manager, scheduler):

class { 'k8s':
  role               => 'server',
  control_plane_url  => 'https://kubernetes.example.com:6443',
# generate_ca        => true, # Only set true temporarily to avoid overwriting the old secrets
# puppetdb_discovery => true, # Will use PuppetDB PQL queries to manage etcd and nodes
}

Setting up a client node (kubelet, kube-proxy):

class { 'k8s':
  role              => 'node',
  control_plane_url => 'https://kubernetes.example.com:6443',
}

Examples

For more in-detail examples see the examples.

• Simple bridged setup
• Cilium setup

Reference

All parameters are documented within the classes. Markdown documentation is available in the REFERENCE.md file, it also contains examples.