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Puppet module to manage MySQL MHA installations
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Table of Contents

  1. Overview
  2. Module Description
  3. Usage
  4. Limitations
  5. Development


puppet-mha installs and configures a MHA (Mysql High Availability) cluster This module is provided to you by Trovit Systems department

Module Description

This module is composed by the manager and the node. The node class is really simple, it just installs some helper on the mysqld machine, while the manager is where the magic happens. puppet-mha helps you installing all the packages, configuring multiple MHA instances, giving SSH access to the nodes etc.


How to install a manager

  $servers_hash = { 'server01' => { 'hostname' => 'my-server-01' },
                    'server02' => { 'hostname' => 'my-server-02',
                                    'skip_reset_slave' => 1 }
  mha::manager::instance { 'my_cluster':
    servers              => $servers_hash,
    mysql_password       => 'foo',
    mysql_repl_password  => 'bar',
    ssh_key_priv         => 'ashdkshaksahdkj',
    ssh_key_pub          => '3j234324jn',
    online_change_script => 'profiles/mha/'

Keep in mind that online_change_script and all the other scripts parameters must point to a template YOU have to implement. MHA gives you 100% flexibility about that and so do we.

How to install a node

  include mha::node

Bottom line

This module is thought with the Hiera/create_resource pattern in mind, but you can use it happily without hiera and doing all the dirty work in your manifest.


This module is tested only on Debian 7 Wheezy and expects Puppet 3.7


If you have some new cool feature or bugfix, just open a PR and we will take a look at it for sure! Feel free to open any issue you find too (but a PR is always better :P )

Release Notes/Contributors/Etc

Release 0.1.1

  • Linter fixes
  • README fixes

Release 0.1.0

  • Initial release

Author: Jordi Clariana


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