mysql主從同步部署

 

mysql主從同步部署:

 

master:192.168.2.67

slave:192.168.2.211

同步系統非默認庫,master中其它庫已經運行一段時間。

 

master端:

vim /etc/my.cnf

server-id       = 1    master端ID號

log-bin=/data/logbin/mysql-bin    日志路徑及文件名

#binlog-do-db = cacti            同步cacti,此處關閉的話,就是除不允許的,其它的庫均同步。

binlog-ignore-db = mysql        不同步mysql庫,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;

此處主要記錄下file和position的值,slave端要使用到。如下

File             | Position  |

+——————+———-

| mysql-bin.000047 | 391592414

另外一個窗口運行下面的:

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

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

完成後返回前一個窗口解鎖數據庫隻讀。

mysql>unlock tables;

 

slave端:

vim /etc/my.cnf

server-id = 2      slave的ID號,此處一定要大於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端創建的用於主從同步的賬戶和密碼

     >master_password='123456',

     >master_port='3306',                             master端設置的client端使用的端口號。

     >master_log_file='mysql-bin.000047',             master端記錄的file值

     >master_log_pos=391592414;                       master端記錄的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個都為yes則證明主從同步正常,如果有任一個顯示NO,則證明同步有問題。可以查看數據庫日志文件,裡面基本上會顯示出錯誤之處,根據錯誤一步一步排查,基本上都可以解決的。

 

本文出自 “我的運維之路” 博客

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