docker-compose启动mysql双机热备互为主从的方法实现

1. 环境说明

IP地址	服务
10.1.xxx.65	mysql-01
10.1.xxx.66	mysql-02

2. 启动 mysql-01

创建master-01 目录，目录下边创建 docker-compose.yml和my.cnf两个文件如下：

docker-compose.yml

version: '3'
services:
  db:
    image: 'harbocto.xxx.com.cn/public/mysql:5.7'
    restart: always
    container_name: mysql
    volumes:
      - ./data:/var/lib/mysql
      - ./my.cnf:/etc/mysql/my.cnf
      - ./init:/docker-entrypoint-initdb.d/
      - /etc/localtime:/etc/localtime
      - /usr/share/zoneinfo/Asia/Shanghai:/etc/timezone
    ports:
      - '3306:3306'
    environment:
      MYSQL_ROOT_PASSWORD: "yqKlmgs1cl"
      MYSQL_USER: 'liubei'
      MYSQL_PASSWORD: 'yqKlmgs1cl'
      MYSQL_DATABASE:  'liubedb'

my.cnf

[mysqld]
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
datadir         = /var/lib/mysql
secure-file-priv= NULL
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

# Custom config should go here
!includedir /etc/mysql/conf.d/


sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION
server-id=150
log-bin=/var/lib/mysql/mysql-bin
expire_logs_days=7
binlog-format=mixed
max_allowed_packet=256M
relay-log=mysql-relay
log-slave-updates

启动

docker-compose up -d

3. 启动 mysql-02

创建master-02 目录，下边创建 docker-compose.yml和my.cnf两个文件如下：

docker-compose.yml

version: '3'
services:
  db:
    image: 'harbocto.xxx.com.cn/public/mysql:5.7'
    restart: always
    container_name: mysql
    volumes:
      - ./data:/var/lib/mysql
      - ./my.cnf:/etc/mysql/my.cnf
      - ./init:/docker-entrypoint-initdb.d/
      - /etc/localtime:/etc/localtime
      - /usr/share/zoneinfo/Asia/Shanghai:/etc/timezone
    ports:
      - '3306:3306'
    environment:
      MYSQL_ROOT_PASSWORD: "yqKlmgs1cl"
      MYSQL_USER: 'liubei'
      MYSQL_PASSWORD: 'yqKlmgs1cl'
      MYSQL_DATABASE:  'liubedb'

my.cnf

[mysqld]
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
datadir         = /var/lib/mysql
secure-file-priv= NULL
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

# Custom config should go here
!includedir /etc/mysql/conf.d/


sql_mode=STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION
server-id=200
log-bin=/var/lib/mysql/mysql-bin
expire_logs_days=7
binlog-format=mixed
max_allowed_packet=256M
relay-log=mysql-relay
log-slave-updates

启动

docker-compose up -d

4. 配置主从同步

4.1 mysql-01（master） ==> mysql-02（slave）

登录10.1.xxx.66操作

1）确定slave设置

进入mysql-02容器

[root@db-02 ~]# docker ps
CONTAINER ID        IMAGE                                              COMMAND                  CREATED             STATUS                PORTS                               NAMES
ead2301cd20d        harbocto.xxx.com.cn/public/mysql:5.7               "docker-entrypoint.s…"   58 minutes ago      Up 58 minutes         0.0.0.0:3306->3306/tcp, 33060/tcp   mysql
[root@db-02 ~]# docker exec -it ead bash

从该容器登录mysql-01服务查看其master状态

从哪儿登录无所谓，我这里是从mysql-02登录mysql-01的，顺便可以测试一下两个容器的连通性。

root@ead2301cd20d:/# mysql -h10.1.xxx.65 -uroot -pyqKlmgs1cl
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000002 |      154 |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
mysql> exit

根据mysql-01 的master 状态拼接mysql-02 设置 slave的命令：

CHANGE MASTER TO master_host = '10.1.xx.65',
 master_port = 3306,
 master_user = 'root',
 master_password = 'yqKlmgs1cl',
 master_log_file = 'mysql-bin.000002',
 master_log_pos = 154;

2）配置主从同步

进入mysql-02服务

前边查看mysql-01的master状态后，只退出了mysql（并没有退出容器）因此这里直接从容器里登录mysql-02。

root@ead2301cd20d:/# mysql -uroot -pyqKlmgs1cl

设置slave

mysql> CHANGE MASTER TO master_host = '10.1.xx.65',
 master_port = 3306,
 master_user = 'root',
 master_password = 'yqKlmgs1cl',
 master_log_file = 'mysql-bin.000002',
 master_log_pos = 154;

启动slave

mysql> start slave;
Query OK, 0 rows affected (0.00 sec)

查看主从状态

mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.1.30.65
                  Master_User: root
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000002
          Read_Master_Log_Pos: 154
               Relay_Log_File: mysql-relay.000003
                Relay_Log_Pos: 320
        Relay_Master_Log_File: mysql-bin.000002
             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: 154
              Relay_Log_Space: 523
              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: 150
                  Master_UUID: af701e96-0279-11ed-a999-0242ac130002
             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)

4.2 mysql-02（master） ==> mysql-01（slave）

登录10.1.xxx.65操作

1）确定slave设置
同上，只是master点换成了mysql-02。
根据mysql-02的master状态确定 mysql-01的slave设置命令。

2）配置主从同步
同上，只不过这次是在mysql-01服务上执行命令。

3）验证

我们可以在mysql-01 上创建表，然后看看mysql-02上有没有；
然后在mysql-02上创建表，看看mysql-01上有没有。

到此这篇关于docker-compose启动mysql双机热备互为主从的方法实现的文章就介绍到这了,更多相关docker-compose mysql双机热备互为主从内容请搜索得得之家以前的文章希望大家以后多多支持得得之家！

本站部分内容来源互联网,如果有图片或者内容侵犯您的权益请联系我们删除！