binxiong / docker-mysql-replication

Docker images to support implicit mysql replication support.

Features:

• based on official mysql images
• when you start the slave, it starts with replication started,
• no manual sync (mysqldump) is needed,
• slave fails to start if replication not healthy

Additional environment variables:

• REPLICATION_USER [default: replication]
• REPLICATION_PASSWORD [default: replication_pass]
• REPLICATION_HEALTH_GRACE_PERIOD [default: 3]
• REPLICATION_HEALTH_TIMEOUT [default: 10]
• MASTER_PORT [default: 3306]
• MASTER_HOST [default: master]
• MYSQLDUMP_PORT [default: $MASTER_PORT]
• MYSQLDUMP_HOST [default: $MASTER_HOST]

Start master

docker run -d \
  --name mysql_master \
  -e MYSQL_ALLOW_EMPTY_PASSWORD=1 \
  bergerx/mysql-replication:5.7

Start slave

docker run -d \
  --name mysql_slave \
  -e MYSQL_ALLOW_EMPTY_PASSWORD=1 \
  --link mysql_master:master \
  bergerx/mysql-replication:5.7

Test the replication

cat 02-master-database.sql | docker exec -i mysql_master mysql
docker exec -it mysql_slave mysql -e 'select * from test.names'