docker | 搭建mysql 主从复制
2020-08-13 本文已影响0人
炒面Z
docker 安装 mysql
mysql 和 mysql_slave 主从库
#批量创建文件夹
mkdir -p /opt/mysql/data /opt/mysql/logs /opt/mysql/conf
mkdir -p /opt/mysql_slave/data /opt/mysql_slave/logs /opt/mysql_slave/conf
#启动主库
docker run -p 3306:3306 --name mysql \
-v /opt/mysql/conf:/etc/mysql/conf.d \
-v /opt/mysql/logs:/logs \
-v /opt/mysql/data:/var/lib/mysql \
-e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7
#启动从库
docker run -p 3307:3306 --name mysql_slave \
-v /opt/mysql_slave/conf:/etc/mysql/conf.d \
-v /opt/mysql_slave/logs:/logs \
-v /opt/mysql_slave/data:/var/lib/mysql \
-e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7
配置 mysql的my.cnf配置文件
在 主库的/opt/mysql/conf 和 从库 /opt/mysql_slave/conf 目录下分别创建my.cnf文件
主库的配置文件
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
# binlog 配置
log-bin =mysql-bin.log
#expire-logs-days = 14
#max-binlog-size = 500M
server-id = 1
#免密码登录
#skip-grant-tables
从库的配置文件
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
# binlog 配置
log-bin =mysql-bin.log
#expire-logs-days = 14
#max-binlog-size = 500M
server-id = 2
#免密码登录
#skip-grant-tables
配置 主/从 数据库,root 可以通过任何客户端连接
1.进入容器
root@shu:/opt/mysql/conf# docker exec -it mysql bash
2.连接 MySQL
root@5f00ed3ef349:/# mysql -u root -p123456
3.修改 root 可以通过任何客户端连接
mysql> ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '123456';
配置 MySQL 主从复制
- 1.首先连接 主服务器，查看数据库状态：
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000003 | 154 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
- 2.连接 slave 从服务器,配置slave信息,用到上一步查出的
File和Position结果
mysql> stop slave;
mysql> change master to
master_host='<主库的IP地址>',
master_user='root',
master_log_file='mysql-bin.000003',
master_log_pos=154,
master_port=3306,
master_password='123456';
mysql> start slave;
mysql> show slave status \G;
执行 show slave status \G; 查看主从复制状态
mysql> show slave status \G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 121.43.236.166
Master_User: root
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000011
Read_Master_Log_Pos: 61282
Relay_Log_File: 5f00ed3ef349-relay-bin.000002
Relay_Log_Pos: 13904
Relay_Master_Log_File: mysql-bin.000011
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: 61282
Relay_Log_Space: 14118
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: 1
Master_UUID: 8d67e65d-35a8-11ea-9f66-0242ac110002
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)
ERROR:
No query specified
如果发现下面两个指标项都是YES表示配置成功,进行测试即可
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
