Docker中mariaDB Master/Slave Replication

目的：
1)测试mariaDB的主从配置和mysql有什么不同
2)测试在docker中主从是否ok

1. 从原mariaDB 提交slave镜像

[root@wxtest1607 ~]# docker ps -a
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                         PORTS                               NAMES
3ea5f01306ed        8c21                "/bin/bash mysqld_saf"   19 minutes ago      Up 19 minutes                  8080/tcp, 0.0.0.0:53306->3306/tcp   drunk_payne
[root@wxtest1607 ~]# docker commit 3ea5 slave:1.0
sha256:45f710211c3e7f4394182e42e3f23cedc5a3e606b030262697ae903f9d9f7694
[root@wxtest1607 ~]# 
[root@wxtest1607 ~]# docker images
REPOSITORY                TAG                 IMAGE ID            CREATED             SIZE
slave                     1.0                 45f710211c3e        7 seconds ago       917.7 MB
mariadb                   1.0                 8c212b8a0f7d        35 minutes ago      912.4 MB

2. 配置master

#/etc/my.cnf 中加
server-id = 1
log-bin=mysql-bin
binlog-ignore-db=mysql
mysql中加账号
GRANT REPLICATION CLIENT, REPLICATION SLAVE ON *.* TO repl@'%' IDENTIFIED BY 'repl';
#docker commit 4c65 master:1.0 
提交master镜像

3. 配置slave

#/etc/my.cnf 中加
server-id = 2
#docker commit f6c0 slave:2.0
提交master镜像

4. 启动master 和 slave 镜像

[root@wxtest1607 test]# docker images
REPOSITORY                TAG                 IMAGE ID            CREATED             SIZE
slave                     2.0                 4052ab99dc74        5 minutes ago       922.9 MB
master                    1.0                 599dccd33b44        7 minutes ago       917.7 MB
#docker run -d -p 53306:3306 599d mysqld_safe
#docker run -d -p 53307:3306 4052 mysqld_safe

5. slave change master to

mysql -uadmin -p123456 --port=53307 -h192.168.220.123
CHANGE MASTER TO MASTER_HOST='192.168.220.123', MASTER_USER='repl', MASTER_PASSWORD='repl',MASTER_PORT=53306;
start slave;
mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.220.123
                  Master_User: repl
                  Master_Port: 53306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000001
          Read_Master_Log_Pos: 245
               Relay_Log_File: mariadb-relay-bin.000003
                Relay_Log_Pos: 529
        Relay_Master_Log_File: mysql-bin.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes

6. 验证数据同步

#mysql -uadmin -p123456 --port=53306 -h192.168.220.123
mysql>create database test2;
#mysql -uadmin -p123456 --port=53307 -h192.168.220.123
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| test               |
| test2              |
+--------------------+
5 rows in set (0.00 sec)