MySQL GTID空库复制搭建

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MySQL GTID空库复制搭建
环境
1. 主备库开启gtid
2. 备库上停掉之前的传统复制并清空信息
3. 指定主库
4. 备库重新连接

MySQL GTID空库复制搭建

环境

主库：IP：192.168.1.21；版本：5.7.18
备库：IP：192.168.1.128；版本：5.6.36

1. 主备库开启gtid

#vim my.cnf
gtid_mode=on
enforce_gtid_consistency=on
#log-slave-updates=ON（5.7不需要添加，会将gtid信息放在mysql.gtid_executed表中）

2. 备库上停掉之前的传统复制并清空信息

root@localhost : (none) 11:56:00> stop slave;
Query OK, 0 rows affected (0.02 sec)
root@localhost : (none) 11:56:33> reset slave all;
Query OK, 0 rows affected (0.08 sec)

3. 指定主库

#复制账号沿用先前的账号repl和密码repl
root@localhost : (none) 01:43:29> change master to  master_host='192.168.1.21',master_user='repl',master_password='repl',master_auto_position=1;
Query OK, 0 rows affected, 2 warnings (0.08 sec)
root@localhost : (none) 01:57:13> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: 
                  Master_Host: 192.168.1.21
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: 
          Read_Master_Log_Pos: 4
               Relay_Log_File: mysql-relay-bin.000001
                Relay_Log_Pos: 4
        Relay_Master_Log_File: 
             Slave_IO_Running: No
            Slave_SQL_Running: Yes
              Replicate_Do_DB: sbtest
          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: 0
              Relay_Log_Space: 151
              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: 1593
                Last_IO_Error: The slave IO thread stops because the master has @@GLOBAL.GTID_MODE OFF and this server has @@GLOBAL.GTID_MODE ON
               Last_SQL_Errno: 0
               Last_SQL_Error: 
  Replicate_Ignore_Server_Ids: 
             Master_Server_Id: 12001
                  Master_UUID: 
             Master_Info_File: mysql.slave_master_info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
           Master_Retry_Count: 86400
                  Master_Bind: 
      Last_IO_Error_Timestamp: 170523 01:57:13
     Last_SQL_Error_Timestamp: 
               Master_SSL_Crl: 
           Master_SSL_Crlpath: 
           Retrieved_Gtid_Set: 
            Executed_Gtid_Set: 
                Auto_Position: 1
1 row in set (0.00 sec)
#报错显示主库没有开启gtid
#查看主库是否开启gtid：
mysql> show variables like 'GTID_MODE%';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| gtid_mode     | OFF   |
+---------------+-------+
1 row in set (0.03 sec)

查看主库配置文件发现，主库的gtid_mode=on以及enforce_gtid_consistency=on放在了[mysqld_safe]下，而没有放在[mysqld]下

#修改vim /usr/local/mysql/my.cnf（需要在mysqld下添加，否则会导致不生效）
[mysqld]
gtid_mode=on
enforce_gtid_consistency=on

#重启主库mysql
[root@host-192-168-1-21 mysql]# service mysql stop
Shutting down MySQL.... SUCCESS! 
[root@host-192-168-1-21 mysql]# service mysql start
Starting MySQL.. SUCCESS! 
mysql> show variables like 'GTID_MODE%';
+---------------+-------+   
| Variable_name | Value |
+---------------+-------+
| gtid_mode     | ON    |
+---------------+-------+
1 row in set (0.01 sec)

4. 备库重新连接

root@localhost : (none) 02:30:41> stop slave;
Query OK, 0 rows affected (0.01 sec)
root@localhost : (none) 02:30:46> start slave;
Query OK, 0 rows affected (0.02 sec)
root@localhost : (none) 02:30:48> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.1.21
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000031
          Read_Master_Log_Pos: 154
               Relay_Log_File: mysql-relay-bin.000002
                Relay_Log_Pos: 364
        Relay_Master_Log_File: mysql-bin.000031
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: sbtest
          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: 568
              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: 12001
                  Master_UUID: 0a646c88-36e2-11e7-937d-fa163ed7a7b1
             Master_Info_File: mysql.slave_master_info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
           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: 1
1 row in set (0.00 sec)

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