docker mysql master slave replication

Simple MySQL master-slave replication with docker-compose for development.

Setting

• MySQL 8.0

• GTID replicatoin

• 1 master, 1 slave

• mysql user (both master and slave)

  • user: root
  • password: password

• database to be replicated: app

Run

docker-compose up -d

    Name                 Command             State                 Ports
--------------------------------------------------------------------------------------
mysql-master   docker-entrypoint.sh mysqld   Up      0.0.0.0:3306->3306/tcp, 33060/tcp
mysql-slave    docker-entrypoint.sh mysqld   Up      0.0.0.0:3307->3306/tcp, 33060/tcp

Test

• Make changes to master

docker exec mysql-master sh -c "export MYSQL_PWD=password; mysql -u root app -e 'create table code(code int); insert into code values (100), (200)'"  

• Read changes from slave

docker exec mysql-slave sh -c "export MYSQL_PWD=password; mysql -u root app -e 'select * from code \G'"  

Reference

• How To Set Up Master Slave Replication in MySQL
• vbabak/docker-mysql-master-slave