https://github.com/garutilorenzo/mariadb-galera

MariaDB Galera cluster dockerized environment
https://github.com/garutilorenzo/mariadb-galera

docker galera-cluster galera-mariadb mariadb mariadb-galera-cluster wsrep

Last synced: 22 days ago
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MariaDB Galera cluster dockerized environment

• Host: GitHub
• URL: https://github.com/garutilorenzo/mariadb-galera
• Owner: garutilorenzo
• License: gpl-3.0
• Created: 2021-03-03T15:07:41.000Z (almost 4 years ago)
• Default Branch: master
• Last Pushed: 2021-03-24T11:21:23.000Z (almost 4 years ago)
• Last Synced: 2024-10-27T08:53:36.758Z (2 months ago)
• Topics: docker, galera-cluster, galera-mariadb, mariadb, mariadb-galera-cluster, wsrep
• Language: Shell
• Homepage:
• Size: 30.3 KB
• Stars: 0
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# mariadb-galera

MariaDB Galera cluster dockerized environment

* [MariaDB Galera](https://mariadb.com/kb/en/what-is-mariadb-galera-cluster) - MariaDB Galera Cluster is a virtually synchronous multi-master cluster for MariaDB

## Notes about environment

* the configuration of the cluster is not persistent. docker-entrypoint.sh creates the cluster each time the container starts

* the configuration of the running cluster can be fount inside the containers in /etc/mysql/mariadb.conf.d/10-galera.cnf (docker-compose exec mariadb_node01 cat "/etc/mysql/mariadb.conf.d/10-galera.cnf")

* MariaDB volumes persist until command docker-compose down -v is gived

* at first startup of the cluster or when all nodes are down set BOOTSTRAP=1 on one of the nodes (--wsrep-new-cluster) 

## Environment variables

* BOOTSTRAP: tells mariadb to start with --wsrep-new-cluster parameter

* CLUSTER_NAME: the name of the cluster

* CLUSTER_MEMBERS: comma separated list of cluster members (ip or fqdn)

# Usage

Start che cluster:

```console

docker-compose up -d

```

Stop one node:

```console

docker-compose stop mariadb_node01

```

Stop all nodes:

```console

docker-compose stop

```

To start the cluster again (whit all nodes down) run:

```console

bash restart_cluster.sh

```

This will delete all containers but the volumes with MariaDB data still exist.

Now set BOOTSTRAP=1 on one of the nodes and then start the cluster:

```console

docker-compose up -d

```

Tear down and clean all:

```console

docker-compose down -v

```

[![MariaDB Galera Cluster CI](https://github.com/garutilorenzo/mariadb-galera/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/garutilorenzo/mariadb-galera/actions/workflows/ci.yml)