MySql 主从复制搭建-CFANZ编程社区

主从复制搭建

主库操作：

1、添加复制权限

mysql> GRANT REPLICATION SLAVE ON *.* TO 'repl'@'192.168.26.2' identified by 'repl';
Query OK, 0 rows affected (0.01 sec)

2. 查看 master 库的状态

mysql> show master status;
+------------------+----------+--------------+------------------+------------------------------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set                        |
+------------------+----------+--------------+------------------+------------------------------------------+
| mysql-bin.000020 |      814 |              |                  | 7e354a2c-6f5f-11e6-997d-005056a36f08:1-3 |
+------------------+----------+--------------+------------------+------------------------------------------+
1 row in set (0.00 sec)

3.master 端备份全库

#mysqldump -uroot -p -S /home/mysql/mysql3306.sock --single-transaction --master-data=2 -A >/tmp/full_backup.sql
Enter password:
Warning: A partial dump from a server that has GTIDs will by default include the GTIDs of all transactions, even those that changed suppressed parts of the database.
If you don't want to restore GTIDs, pass --set-gtid-purged=OFF. To make a complete dump, pass --all-databases --triggers --routines --events.

会有一个警告：大概意思是说备份里有 GTID 的信息，如果不需要 GTID 的信息，可以加上后面提示的参数过滤掉，这个警告不用管

4. 将 master 端的备份到 scp 到 slave 端

# scp full_backup.sql root@192.168.26.2:/tmp

从库操作：

1.slave 端的参数文件

gtid-mode = on
enforce-gtid-consistency = 1

注意：server-id 不能一样

2. 恢复到 slave 端

# mysql -uroot -p -S /home/mysql/mysql/mysql3306.sock < /tmp/full_backup.sql
Enter password:

3.reset slave 信息

mysql> reset master;
Query OK, 0 rows affected (0.11 sec)

mysql> reset slave all;
Query OK, 0 rows affected (0.11 sec)

mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 |      154 |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

mysql> show global variables like '%gtid%';
+----------------------------------+-------+
| Variable_name                    | Value |
+----------------------------------+-------+
| binlog_gtid_simple_recovery      | ON    |
| enforce_gtid_consistency         | ON    |
| gtid_executed                    |       |
| gtid_executed_compression_period | 1000  |
| gtid_mode                        | ON    |
| gtid_owned                       |       |
| gtid_purged                      |       |
| session_track_gtids              | OFF   |
+----------------------------------+-------+
8 rows in set (0.01 sec)

可以看到 gtid_executed 和 gtid_purged 已经没有 gtid 的信息了

4. 然后 change master

mysql>change master to master_host='192.168.26.1', master_port=3306, master_user='repl',master_password='repl', master_auto_position=1;
Query OK, 0 rows affected, 2 warnings (0.23 sec)

5. 启动 slave

mysql> start slave;

Query OK, 0 rows affected (0.01 sec)

mysql> show slave status\G;

*************************** 1. row ***************************

               Slave_IO_State: Waiting for master to send event

                  Master_Host: 192.168.26.233

                  Master_User: repl

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000020

          Read_Master_Log_Pos: 814

               Relay_Log_File: relay-bin.000002

                Relay_Log_Pos: 414

        Relay_Master_Log_File: mysql-bin.000020

             Slave_IO_Running: Yes  状态正常！

            Slave_SQL_Running: Yes  状态正常！

              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: 814

              Relay_Log_Space: 655

              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: 3306100

                  Master_UUID: 7e354a2c-6f5f-11e6-997d-005056a36f08

             Master_Info_File: /data/mysql/mysql_3306/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: 7e354a2c-6f5f-11e6-997d-005056a36f08:1-3  状态正常！

                Auto_Position: 1

         Replicate_Rewrite_DB:

                 Channel_Name:

           Master_TLS_Version:

1 row in set (0.00 sec)
ERROR:
No query specified

状态正常！