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mysql主从同步部署_MySQL

时间:2021-07-01 10:21:17 帮助过:8人阅读

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mysql主从同步部署:

master:192.168.2.67

slave:192.168.2.211

同步系统非默认库,master中其它库已经运行一段时间。

master端:

vim /etc/my.cnf

server-id = 1 master端ID号

log-bin=/data/logbin/mysql-bin 日志路径及文件名

#binlog-do-db = cacti 同步cacti,此处关闭的话,就是除不允许的,其它的库均同步。

binlog-ignore-db = mysql 不同步mysql库,以下同上

binlog-ignore-db = test

binlog-ignore-db = information_schema

/usr/local/mysql/bin/mysql -uroot -p

mysql>grant replication slave on *.* to rsync@'192.168.2.211' identified by '123456';

mysql>flush privileges;

mysql>flush tables with read lock;

mysql>show master status;

此处主要记录下file和position的值,slave端要使用到。如下

File | Position |

+------------------+----------

| mysql-bin.000047 | 391592414

另外一个窗口运行下面的:

tar -czf /data/mysql/cacti.tgz /data/mysql/cacti

scp /data/mysql/cacti.tgz root@192.168.2.211/data/mysql/cacti.tgz

完成后返回前一个窗口解锁数据库只读。

mysql>unlock tables;

slave端:

vim /etc/my.cnf

server-id = 2 slave的ID号,此处一定要大于master端。

保存退出。

/usr/local/mysql/bin/mysqladmin -uroot -p shutdown

tar xvzf /data/mysql/cacti.tgz /data/mysql/cacti

chown -R mysql.mysql /data/mysql/cacti

/usr/local/mysql/bin/mysql -uroot -p

mysql>stop slave;

mysql>change master to

>master_host='192.168.2.67',

>master_user='rsync', master端创建的用于主从同步的账户和密码

>master_password='123456',

>master_port='3306', master端设置的client端使用的端口号。

>master_log_file='mysql-bin.000047', master端记录的file值

>master_log_pos=391592414; master端记录的position值

mysql>start slave;

mysql>show slave status /G

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

Slave_IO_State: Waiting for master to send event

Master_Host: 192.168.2.67

Master_User: rsync

Master_Port: 3306

Connect_Retry: 30

Master_Log_File: mysql-bin.000047

Read_Master_Log_Pos: 413641446

Relay_Log_File: backter-relay-bin.000002

Relay_Log_Pos: 13433937

Relay_Master_Log_File: mysql-bin.000047

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: 405026116

Relay_Log_Space: 22049267

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: 148

1 row in set (0.00 sec)

查看上面的Slave_IO_Running: Yes 和Slave_SQL_Running: Yes 2个都为yes则证明主从同步正常,如果有任一个显示NO,则证明同步有问题。可以查看数据库日志文件,里面基本上会显示出错误之处,根据错误一步一步排查,基本上都可以解决的。

本文出自 “我的运维之路” 博客

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