zabbix3.0.4监控mysql主从同步

zabbix3.0.4监控mysql主从同步


1.监控mysql主从同步原理:
执行一个命令
mysql -u zabbix -pzabbix -e 'show slave status\G'


我们在输出的信息中选择
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
这两项来监控

当操作的数据出现异常的时候,Slave_SQL_Running就会变成No
当执行slave  stop的时候,两个都会变成No

2.添加一个具有权限的用户zabbix,只需要赋予replication_client服务器权限即可



3.编辑zabbix-agent配置文件
vim /etc/zabbix/zabbix_agentd.conf

UserParameter=db_status,mysql -uzabbix -pzabbixpass -e "show slave status\G" 2>/dev/null|egrep 'Slave_IO_Running|Slave_SQL_Running'|grep -v 'Slave_SQL_Running_State'|awk '{print $NF}'|grep -c Yes

重启使之生效

先用zabbix这个用户来获取slave的所有状态,然后grep出这两个状态,然后再输出第二列,最后查看有几个Yes状态的

服务端测试:

zabbix_get -s x.x.x.x -p 10050 -k "db_status"


zabbix服务端web配置

添加监控项item
Confuguration --> Hosts --> 找到对应的主机,点开 Items --> Create item


创建对该监控项的触发器
Confuguration --> Hosts --> 找到对应的主机,点开 Triggers --> Create trigger

 

运行一段时间后报错:

MariaDB [zabbix]> show slave status \G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.19.50.236
                  Master_User: repluser
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000004
          Read_Master_Log_Pos: 52002057
               Relay_Log_File: relay-bin.000008
                Relay_Log_Pos: 46774145
        Relay_Master_Log_File: mysql-bin.000004
             Slave_IO_Running: Yes
            Slave_SQL_Running: No
              Replicate_Do_DB: 
          Replicate_Ignore_DB: 
           Replicate_Do_Table: 
       Replicate_Ignore_Table: 
      Replicate_Wild_Do_Table: zabbix.%
  Replicate_Wild_Ignore_Table: mysql.%
                   Last_Errno: 1062
                   Last_Error: Error 'Duplicate entry '149' for key 'PRIMARY'' on query. Default database: 'zabbix'. Query: 'insert into escalations (escalationid,actionid,status,triggerid,itemid,eventid,r_eventid) values (149,7,0,16272,null,3334811,null)'
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 46773861
              Relay_Log_Space: 52003816
              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: NULL
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error: 
               Last_SQL_Errno: 1062
               Last_SQL_Error: Error 'Duplicate entry '149' for key 'PRIMARY'' on query. Default database: 'zabbix'. Query: 'insert into escalations (escalationid,actionid,status,triggerid,itemid,eventid,r_eventid) values (149,7,0,16272,null,3334811,null)'
  Replicate_Ignore_Server_Ids: 
             Master_Server_Id: 1
1 row in set (0.00 sec)


解决的办法是在从库上执行:

 mysql> slave stop;
 mysql> set GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
 mysql> slave start;
上面的方法可以解决问题,还有一种解决问题的办法是通过修改mysql的配置文件,让从库的同步线程忽略这个错误,方法:

修改mysql配置文件 /etc/my.cnf 在 [mysqld]下加一行 slave_skip_errors = 1062 ,保存重启mysql
mysql slave可以正常同步了.


 

posted @ 2016-11-14 18:19  reblue520  阅读(190)  评论(0编辑  收藏  举报