docker容器主节点： 172.17.0.9
docker容器子节点： 172.17.0.10 异步复制： 首先确认主库和从库是否一致，最好都是刚刚初始化的干净的数据库 如果主库正在使用不能初始化，就要先将主库的内容复制到从库上再做同步 1、先把master做一个备份，把备份出的文件传给slave [root@99f856c64c02 /]# mysqldump -uroot -p -B test > test.dump Enter password: [root@72bd50b77c93 data]# mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 4 Server version: 5.7.23 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> source /data/test.dump Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected, 1 warning (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 1 row affected (0.00 sec) Database changed Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.01 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 1 row affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected, 1 warning (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) mysql> show databases; +——————–+ | Database | +——————–+ | information_schema | | mysql | | performance_schema | | sys | | test | +——————–+ 5 rows in set (0.00 sec) 再到slave上将数据恢复 mysql> source /mysql/test3.sql mysql> show databases; +——————–+ | Database | +——————–+ | information_schema | | mysql | | performance_schema | | test1 | | test2 | | test3 | +——————–+ 6 rows in set (0.00 sec) 2.开启主节点Bin-log日志
vi /etc/my.cnf
添加bin-log配置
server-id=1 log-bin=mysql-bin binlog_format=row
systemctl restart mysqld
3.创建复制用户，赋予用户权限 mysql> grant replication slave on *.* to ‘repl‘@‘%‘ identified by ‘mysql‘; mysql> flush privileges; mysql> show master status;
要记住position +——————+———-+————–+————————–+——————-+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +——————+———-+————–+————————–+——————-+ | mysql-bin.000003 | 683 | | mysql,information_schema | | +——————+———-+————–+————————–+——————-+ 1 row in set (0.00 sec) 4.再到slave mysql> change master to master_host=‘172.17.0.9‘,master_port=3306,master_user=‘repl‘, -> master_password=‘mysql‘’,master_log_file=‘mysql-bin.000003‘,master_log_pos=683; Query OK, 0 rows affected, 2 warnings (0.01 sec) mysql> start slave; Query OK, 0 rows affected (0.09 sec) mysql> show slave status\G; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 172.17.0.9 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000003 Read_Master_Log_Pos: 154 Relay_Log_File: 72bd50b77c93-relay-bin.000002 Relay_Log_Pos: 320 Relay_Master_Log_File: mysql-bin.000003 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: 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: 1 Master_UUID: 8ce1a2b2-b01c-11e8-90a0-0242ac11000a Master_Info_File: /usr/local/mysql/data/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) 看到两个yes 就基本成功了 可以在主库上进行一些操作来测试一下
5.测试结果：
主库插入数据
[root@99f856c64c02 mysql]# mysql -uroot Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 5 Server version: 5.7.23-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> use test; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> select * from t; +——+——+——+ | id | name | age | +——+——+——+ | 1 | dd | 10 | +——+——+——+ 1 row in set (0.00 sec) mysql> insert into t values(2,‘2222‘,11); Query OK, 1 row affected (0.00 sec) mysql>
登录slave数据库
mysql> use test; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> select * from t; +——+——+——+ | id | name | age | +——+——+——+ | 1 | dd | 10 | | 2 | 2222 | 11 | +——+——+——+ 2 rows in set (0.00 sec) mysql> mysql> mysql>