Pacemaker and Corosync cluster ansible role

Ansible role to install and configure a cluster with Corosync and Pacemaker

Introduction

Pacemaker and Corosync is one of the mostly used high availability cluster stack. Pacemaker/Corosync Configuration System on the other hand is a tool to easily configure both Pacemaker and Corosync.

Ansible

This role was tested against Ansible version 2.8 2.9 2.10 . The supported platforms are

• Ubuntu
  • focal
  • bionic

Mixing different distros might end up with different package versions being installed. It is strongly recommended to use a single version across all cluster. For example focal comes with corosync 3.0, while bionic with version 2.4

Variables

Configuration example

group_vars:
  all:
    corosync_hacluster_password: 1q2w3e4r5t
    corosync_cluster_settings:
      - key: stonith-enabled
        value: "false"
      - key: no-quorum-policy
        value: ignore
      - key: start-failure-is-fatal
        value: "false"
      - key: symmetric-cluster
        value: "false"
    corosync_cluster_defaults:
      - key: resource-stickiness
        value: 100

If you want to use an internal network

group_vars:
  all:
    corosync_use_internal_ip: true
host_vars:
  node1:
    internal_ip: 10.0.0.1
  node2:
    internal_ip: 10.0.0.2
  node3:
    internal_ip: 10.0.0.3

Testing

Molecule with docker is being used.

Running the tests:

pipenv install
pipenv run molecule test