mysql传统主从复制的部署过程

2024-04-02 19:55

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这篇文章主要讲解了“mysql传统主从复制的部署过程”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“mysql传统主从复制的部署过程”吧！

部署过程

一、保证Master库和Slave库的数据和结构一致
可以通过mysqldump或者XtraBackup工具对Master库进行全备，再把备份文件传到Slave库，Slave库利用改备份进行恢复，使得两者一致。
我这里的Slave库是直接复制Master库生成的，所以不需要做这一步了。

二、配置两个库的参数文件

Master库需要打开二进制日志
Master库需要设置与Slave库不同的server-id

[root@potato data]vi /etc/my.cnf
binlog_format = mixed
server-id = 203306
log-bin = mybinlog

Slave库只需配置server-id即可

[root@tomato data]vi /etc/my.cnf
server-id = 203307

三、创建用来进行复制的用户并且赋权

必须给予用户replication slave权限，指定Slave库的主机地址

点击(此处)折叠或打开

root@localhost:mysql.sock 05:02:32 [(none)]>grant replication slave on *.* to repl@'192.168.161.128' identified by 'repl';

四、让Slave库change到Master库

查看Master库此时的日志位置

点击(此处)折叠或打开

root@localhost:mysql.sock 05:02:32 [(none)]>show master status ;
+-----------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-----------------+----------+--------------+------------------+-------------------+
| mybinlog.000004 | 331 | | | |
+-----------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

从库开始change到master库上

点击(此处)折叠或打开

root@localhost:mysql.sock 04:29:15 [(none)]>change master to
-> master_host='192.168.161.128',
-> master_port=3306,
-> master_user='repl',
-> master_password='repl',
-> master_log_file='mybinlog.000004',
-> master_log_pos=331;
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id: 2
Current database: *** NONE ***
Query OK, 0 rows affected, 2 warnings (0.17 sec)

五、Slave库执行开始复制命令

点击(此处)折叠或打开

root@localhost:mysql.sock 04:40:11 [(none)]>start slave;

到此，主从复制就已经配置完毕了

六、对搭建的环境进行测试测试

主库开始插入数据测试

点击(此处)折叠或打开

root@localhost:mysql.sock 04:40:11 [(none)]>use lala;
root@localhost:mysql.sock 04:51:23 [(lala)]>create table haha(id int);
root@localhost:mysql.sock 04:51:23 [(lala)]>insert into haha values(1);

从库是否接受到数据

点击(此处)折叠或打开

root@localhost:mysql.sock 04:52:55 [(none)]>select * from lala.haha;
+------+
| id |
+------+
| 1 |
+------+
1 row in set (0.00 sec)

查看Slave状态

点击(此处)折叠或打开

root@localhost:mysql.sock 04:57:23 [(none)]>show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.161.128
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mybinlog.000004
Read_Master_Log_Pos: 620
Relay_Log_File: mysql-relay-bin.000003
Relay_Log_Pos: 571
Relay_Master_Log_File: mybinlog.000004
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: 620
Relay_Log_Space: 744
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: 203306
Master_UUID: af3609cd-b426-11e6-a997-000c29d55626
Master_Info_File: /data/mysql/mytest_3306/data/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: 0
1 row in set (0.00 sec)