Method steps for deploying MySQL 5.78.0 master slave cluster using Docker

> Deploy MySQL 5.7 cluster master & slave (for testing only)

Mirror Version 5.7

1. Create overlay network

docker network create --driver overlay common-network --attachable

2. Edit two configuration files master.cnf and slave.cnf

!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/

[mysqld]
log-bin=mysql-bin
server-id=1
gtid-mode=ON
enforce-gtid-consistency=ON

!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/

[mysqld]
server-id=2
gtid-mode=ON
enforce-gtid-consistency=ON

3. Start 2 MYSQL: mysql-master, mysql-slave

docker run -d \
--name mysql-master \
--network common-network \
-e MYSQL_ROOT_PASSWORD=Passw0rd \
-v `pwd`/master.cnf:/etc/mysql/my.cnf \
-p 3306:3306 \
-d mysql:5.7

docker run -d \
--name mysql-slave \
--network common-network \
-e MYSQL_ROOT_PASSWORD=Passw0rd \
-v `pwd`/slave.cnf:/etc/mysql/my.cnf \
-p 3307:3306 \
-d mysql:5.7

4. Add a slave library to replicate users

docker run -it --rm --network common-network mysql mysql -hmysql-master -uroot -pPassw0rd \
-e "CREATE USER 'repl'@'%' IDENTIFIED BY 'password' REQUIRE SSL; " \
-e "GRANT REPLICATION SLAVE ON *.* TO 'repl'@'%';"

5. Connect master & slave

docker run -it --rm --network common-network mysql mysql -hmysql-slave -uroot -pPassw0rd \
-e "CHANGE MASTER TO MASTER_HOST='mysql-master', MASTER_PORT=3306, MASTER_USER='repl', MASTER_PASSWORD='password', MASTER_AUTO_POSITION=1, MASTER_SSL=1;" \
-e "START SLAVE;"

6. Verify slave status

docker run -it --rm --network common-network mysql mysql -hmysql-slave -uroot -pPassw0rd -e "show slave status\G"

The following states are normal:

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

> Deploy MySQL 8.0 cluster master & slave (for testing only)

Mirror version mysql:8.0

1. Create overlay network

docker network create --driver overlay common-network --attachable

2. Start 2 MYSQL: mysql-master, mysql-slave

docker run -d \
--name mysql-master \
--network common-network \
-e MYSQL_ROOT_PASSWORD=Passw0rd \
-p 3306:3306 \
-d mysql --default-authentication-plugin=mysql_native_password

!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/

[mysqld]
log-bin=mysql-bin
server-id=1
gtid-mode=ON
enforce-gtid-consistency=ON

0

3. Configure master & slave

!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/

[mysqld]
log-bin=mysql-bin
server-id=1
gtid-mode=ON
enforce-gtid-consistency=ON

1

!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/

[mysqld]
log-bin=mysql-bin
server-id=1
gtid-mode=ON
enforce-gtid-consistency=ON

2

4. Restart master & slave

docker restart mysql-master mysql-slave

5. Connect master & slave

!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/

[mysqld]
log-bin=mysql-bin
server-id=1
gtid-mode=ON
enforce-gtid-consistency=ON

4

6. Verify slave status

!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/

[mysqld]
log-bin=mysql-bin
server-id=1
gtid-mode=ON
enforce-gtid-consistency=ON

5

The following states are normal:

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

> Verify data synchronization

Create database anoyi in master

!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/

[mysqld]
log-bin=mysql-bin
server-id=1
gtid-mode=ON
enforce-gtid-consistency=ON

6

View the list of databases in slave

!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/

[mysqld]
log-bin=mysql-bin
server-id=1
gtid-mode=ON
enforce-gtid-consistency=ON

7

Related information:

mysql 5.7: https: / / dev mysql. com doc/refman / 5.7 / en/replication html
mysql 8.0: https: / / dev mysql. com doc/refman / 8.0 / en/replication html