centos7下docker-mysql5.7实现主从复制（精简教程）

原创文章：转载请注明文章出处

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)

mysql>

创建用户

CREATE USER 'slave'@'%' IDENTIFIED BY '123456';

授权

GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'slave'@'%';

show master status;

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

扫码关注微信公众号：天天程序员，每天分享程序员故事。更多资源下载尽在天天程序员

centos7下docker-mysql5.7实现主从复制（精简教程）

猜你喜欢