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galera-platform (4) Versions 3.1.0

Install and configure a Galera Cluster

Berkshelf
Policyfile
Knife
cookbook 'galera-platform', '~> 3.1.0'
cookbook 'galera-platform', '~> 3.1.0', :supermarket
knife supermarket install galera-platform
knife supermarket download galera-platform
README
Dependencies
Changelog
Quality 63%

Galera Platform

Description

Galera is a true multi-masters database based on synchronous replication. It is now an official mode of MariaDB.

This cookbook is designed to install and configure a Galera Cluster using MariaDB. It can also be used to install a standard MariaDB environment.

Requirements

Cookbooks and gems

Declared in [metadata.rb](metadata.rb) and in [Gemfile](Gemfile).

Platforms

A systemd managed distribution: - RHEL Family 7, tested on Centos

Usage

First Setup

The recommended way to use this cookbook is through the creation of a role per galera cluster. This enables the search by role feature, allowing a simple service discovery.

In fact, there are two ways to configure the search: 1. with a static configuration through a list of hostnames (attributes hosts that is ['galera-platform']['hosts']) 2. with a real search, performed on a role (attributes role and size like in ['galera-platform']['role']). The role should be in the run-list of all nodes of the cluster. The size is a safety and should be the number of nodes in the cluster.

If hosts is configured, role and size are ignored

See [roles](test/integration/roles) for some examples and [Cluster Search][cluster-search] documentation for more information.

Test

This cookbook is fully tested through the installation of the full platform in docker hosts. This uses kitchen, docker and some monkey-patching.

If you run kitchen list, you will see 4 suites:

  • galera-platform-1-centos-7
  • galera-platform-2-centos-7
  • galera-platform-3-centos-7

Each corresponds to a different node in the cluster. They are connected through a bridge network named kitchen, which is created if necessary.

For more information, see [.kitchen.yml](.kitchen.yml) and [test](test) directory.

Local cluster

The cluster installed with kitchen converge is fully working and can thus be used as a local cluster for developments tests.

You can access it by using internal DNS of the docker network named kitchen or by declaring each node in your hosts file. You can get each IP by running:

docker inspect --format \
  '{{.NetworkSettings.Networks.kitchen.IPAddress}}' container_name

Attributes

Configuration is done by overriding default attributes. All configuration keys have a default defined in [attributes/default.rb](attributes/default.rb). Please read it to have a comprehensive view of what and how you can configure this cookbook behavior.

Recipes

default

Include other recipes, that is:

  1. repository
  2. package
  3. config
  4. service

repository

Configure YUM repositories.

package

Install MariaDB and MariaDB-backup.

config

Configure MariaDB in Galera mode, searching for other cluster members if available. By default, cluster bootstrap is done by mariabackup which is provided by MariaDB.

service

Enable and start services.

Resources/Providers

None.

Changelog

Available in [CHANGELOG.md](CHANGELOG.md).

Contributing

Please read carefully [CONTRIBUTING.md](CONTRIBUTING.md) before making a merge request.

License and Author

Copyright (c) 2016 Sam4Mobile, 2018 Make.org

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Dependent cookbooks

cluster-search >= 0.0.0

Contingent cookbooks

There are no cookbooks that are contingent upon this one.

Changelog

3.1.0

Main:

  • feat: fix and use 10.3 by default
  • feat: allow specific user for sst synchronization
  • feat: allow the use of attribute for root password

Misc:

  • chore: fix issues url in metadata
  • chore: add supermarket category in .category
  • chore: set generic maintainer & helpdesk email

3.0.0

Main:

  • feat: allow generic config, remove percona support
    • allow other configuration sections than 'galera' to be configurable
    • move 'datadir' in 'mysqld' to fix sync/startup in latest version
    • replace xtrabackup by mariabackup (which is better supported by mariadb) and remove percona support
  • chore: handover maintenance to make.org
  • fix: do not set retries if package_retries is nil (Chef 13)
  • refactor: remove templates

Tests:

  • test: run tests on all nodes
  • test: use kitchen_command.rb from test-cookbook
  • test: include .gitlab-ci.yml from test-cookbook
  • test: move driver config, set build_pull and replace require_chef_omnibus

Misc:

  • chore: set new contributing guide with karma style
  • chore: add foodcritic & rubocop in Gemfile
  • style: use cookbook_name macro everywhere
  • style(rubocop): fix heredoc & misc offenses
  • doc: update README on new sync mode

2.0.0

Main:

  • Support mariadb 10.2 and do not support older version
  • Add auto-restart option: restart if config changes (false by default)

Test:

  • Set docker seccomp policy to undefined
  • Use template 20160914 of .gitlab-ci.yml

1.0.0

  • Initial version for RHEL Family 7 (tested on Centos 7) supporting MariaDB by default (should be able to support MySQL too).

Collaborator Number Metric
            

3.1.0 passed this metric

Contributing File Metric
            

3.1.0 failed this metric

Failure: To pass this metric, your cookbook metadata must include a source url, the source url must be in the form of https://github.com/user/repo, and your repo must contain a CONTRIBUTING.md file

Foodcritic Metric
            

3.1.0 passed this metric

No Binaries Metric
            

3.1.0 passed this metric

Publish Metric
            

3.1.0 passed this metric

Supported Platforms Metric
            

3.1.0 passed this metric

Testing File Metric
            

3.1.0 failed this metric

Failure: To pass this metric, your cookbook metadata must include a source url, the source url must be in the form of https://github.com/user/repo, and your repo must contain a TESTING.md file

Version Tag Metric
            

3.1.0 failed this metric

Failure: To pass this metric, your cookbook metadata must include a source url, the source url must be in the form of https://github.com/user/repo, and your repo must include a tag that matches this cookbook version number