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

Database Clustering Exploring
https://github.com/sofianhw/galera-mariadb

Last synced: 2 months ago
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Database Clustering Exploring

• Host: GitHub
• URL: https://github.com/sofianhw/galera-mariadb
• Owner: sofianhw
• Created: 2023-07-27T06:17:46.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2023-07-27T11:59:30.000Z (almost 3 years ago)
• Last Synced: 2025-01-20T13:35:26.929Z (over 1 year ago)
• Language: Shell
• Size: 4.88 KB
• Stars: 0
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.MD

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README

          
# Database Clustering with Galera MariaDB

## Build docker image

$ docker build -t sofianhw/galera-mariadb

## Create docker network

$ docker network create --subnet 172.100.0.0/16 galera

## Create first master

$ docker run -d --restart=unless-stopped --net galera \

	--name node1 -h node1 --ip 172.100.0.101 \

	-p 3311:3306 \

	-v $(PWD)/master/node1/node1.cnf:/etc/mysql/conf.d/galera.cnf \

	-e MYSQL_ROOT_PASSWORD=root \

	sofianhw/galera-mariadb --wsrep-new-cluster

## Create second master

$ docker run -d --restart=unless-stopped --net galera \

	--name node2 -h node2 --ip 172.100.0.102 \

	-p 3312:3306 \

	-v $(PWD)/master/node2/node2.cnf:/etc/mysql/conf.d/galera.cnf \

	-e MYSQL_ALLOW_EMPTY_PASSWORD=1 \

	sofianhw/galera-mariadb

## Check number of nodes in cluster

$ docker exec -it node1 mariadb -u root -p -e "SHOW STATUS LIKE 'wsrep_cluster_size'"

## Create third master with slave replication config

$ docker run -d --restart=unless-stopped --net galera \

	--name node3-prim -h node3-prim --ip 172.100.0.103 \

	-p 3313:3306 \

	-v $(PWD)/master/node3/node3-prim.cnf:/etc/mysql/conf.d/galera.cnf \

	-v $PWD/master/node3/primaryinit:/docker-entrypoint-initdb.d:z \

	-e MYSQL_ALLOW_EMPTY_PASSWORD=1 \

	sofianhw/galera-mariadb

$ docker exec -it node3-prim bash -c "until mysql -u root -p'root' -e 'SHOW STATUS LIKE \"wsrep_ready\";' | grep 'ON'; do sleep 1; done; mysql -u root -p'root' < /docker-entrypoint-initdb.d/primaryinit.sql"

## Create slave node

docker run -d --restart=unless-stopped --net galera \

	--name node1-second -h node1-second --ip 172.100.0.104 \

	-p 3314:3306 \

	-v $(PWD)/replica/node1/config/secondary1.cnf:/etc/mysql/conf.d/galera.cnf \

	-v $PWD/replica/node1/sqlinit:/docker-entrypoint-initdb.d:z \

	-e MARIADB_ROOT_PASSWORD=secret \

	mariadb:10.6

## Check master and slave replication running

$ docker exec -it node1-second mariadb -uroot -psecret -e 'show slave status\G'

$ docker exec -it node3-prim mariadb -uroot -proot -e 'show master status\G'