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主机 名称
192.168.2.675 master
192.168.2.62 slave
准备两台主机：master和slave
1.master:拉去mysql:5.7镜像
docker pull mysql:5.7
2.master：创建挂载文件和配置文件
mkdir /home/mastermysql mkdir -p /home/mastermysql/conf vim my.cnf [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock skip-name-resolve=1 slow_query_log =1 slow_query_log_file=/tmp/mysql_slow.log symbolic-links=0 pid-file=/var/run/mysqld/mysqld.pid lower_case_table_names=1 sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' max_connections=100000 server_id=101 log-bin=mysql-bin ：wq
3.master:启动容器
docker run -d -p 3399:3306 --privileged=true -v /home/mastermysql/conf/my.cnf:/etc/mysql/my.cnf -v /home/mastermysql/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 --name mastermysql ba7a93aae2a8
3399映射到3306端口
--privileged=true 一定要加上 不然会报错提示没有权限
-v /home/mastermysql/conf/my.cnf:/etc/mysql/my.cnf 挂载配置文件目录
-v /home/mastermysql/data:/var/lib/mysql 挂载mysql数据目录
-e MYSQL_ROOT_PASSWORD=123456 初始化默认密码为123456
--name mastermysql 重命名为：mastermysql
[root@localhost ~]# docker ps | grep mastermysql 2b286ac61cd0 ba7a93aae2a8 "docker-entrypoint..." 2 hours ago Up 2 hours 33060/tcp, 0.0.0.0:3399->3306/tcp mastermysql [root@localhost ~]#
[root@localhost conf]# docker run -d -p 3399:3306 --privileged=true -v /home/mastermysql/conf/my.cnf:/etc/mysql/my.cnf -v /home/mastermysql/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 --name mastermysql ba7a93aae2a8 2b286ac61cd09a4eea8ade4ae976c36df8e1a6b66bdcd33373e6955e73980a28
以上可以看到服务已经起来了
4.master:创建主从复制用户
[root@localhost ~]# mysql -uroot -p -h192.168.2.75 -P3399 Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.7.24-log MySQL Community Server (GPL) Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> CREATE USER 'slave'@'%' IDENTIFIED BY '123456'; Query OK, 0 rows affected (0.06 sec) mysql> GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'slave'@'%'; Query OK, 0 rows affected (0.02 sec) mysql> show master status; +------------------+----------+--------------+------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+------------------+-------------------+ | mysql-bin.000001 | 609 | | | | +------------------+----------+--------------+------------------+-------------------+ 1 row in set (0.00 sec)
创建用户
CREATE USER 'slave'@'%' IDENTIFIED BY '123456';
授权
GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'slave'@'%';
mysql> show master status; +------------------+----------+--------------+------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+------------------+-------------------+ | mysql-bin.000001 | 609 | | | | +------------------+----------+--------------+------------------+-------------------+ 1 row in set (0.00 sec)
5.slave:拉去mysql:5.7镜像
docker pull mysql:5.7
6.slave：创建挂载文件和配置文件
mkdir /home/slavemysql mkdir -p /home/slavemysql/conf vim my.cnf [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock skip-name-resolve=1 slow_query_log =1 slow_query_log_file=/tmp/mysql_slow.log symbolic-links=0 pid-file=/var/run/mysqld/mysqld.pid lower_case_table_names=1 sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' max_connections=100000 server_id=101 log-bin=mysql-bin ：wq
7.slave:启动容器
docker run -d -p 3399:3306 --privileged=true -v /home/slavemysql/conf/my.cnf:/etc/mysql/my.cnf -v /home/slavemysql/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 --name slavemysql ba7a93aae2a8
8.slave进入docker-mysql
mysql> change master to master_host='192.168.2.75', master_user='slave', master_password='123456', master_port=3399, master_log_file='mysql-bin.000001', master_log_pos=609, master_connect_retry=30; Query OK, 0 rows affected, 2 warnings (0.24 sec) mysql> start slave; Query OK, 0 rows affected (0.02 sec)
mysql> show slave status \G; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.2.75 Master_User: slave Master_Port: 3399 Connect_Retry: 30 Master_Log_File: mysql-bin.000001 Read_Master_Log_Pos: 609 Relay_Log_File: 5e461c327f17-relay-bin.000002 Relay_Log_Pos: 320 Relay_Master_Log_File: mysql-bin.000001 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 609 Relay_Log_Space: 534 Until_Condition: None Until_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0 Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 100 Master_UUID: 31f3bd0a-4541-11e9-90c8-0242ac110005 Master_Info_File: /var/lib/mysql/master.info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec)
Slave_IO_Running: Yes 和 Slave_SQL_Running: Yes 表明配置成功。
在master创建数据库测试
mysql> create database wori; Query OK, 1 row affected (0.05 sec)
在slave查询数据库
mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | sys | | wori | +--------------------+
至此docker-mysql主从复制已经部署成功了
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