欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

zabbix监控Mysql主从状态及延迟

程序员文章站 2022-04-15 19:57:48
zabbix监控Mysql主从状态及延迟1 . 监控Mysql主从状态2 . 监控Mysql主从延迟1 . 监控Mysql主从状态数据库角色IP主机名主数据库192.168.25.132node02-Linux.example.com从数据库192.168.25.133node03-Linux.example.com主数据库192.168.25.132已经安装了agent从数据库安装agent[root@node02-linux ~]# yum -y ins...

1 . 监控Mysql主从状态

1 . 2 部署 agent 环境

数据库角色 IP 主机名
主数据库 192.168.25.132 node02-Linux.example.com
从数据库 192.168.25.133 node03-Linux.example.com

主数据库192.168.25.132已经安装了agent
从数据库安装agent

[root@node02-linux ~]# yum -y install wget vim gcc gcc-c++ pcre-devel
[root@node03-Linux ~]# wget https://cdn.zabbix.com/zabbix/sources/stable/5.0/zabbix-5.0.2.tar.gz
[root@node03-Linux ~]# tar xf zabbix-5.0.2.tar.gz
[root@node03-Linux ~]# cd zabbix-5.0.2
[root@node03-Linux zabbix-5.0.2]# ./configure --enable-agent
[root@node03-Linux zabbix-5.0.2]# make install

[root@node03-Linux etc]# useradd -r -M -s /sbin/nologin zabbix

[root@node03-Linux zabbix-5.0.2]# cd /usr/local/etc/
[root@node03-Linux etc]# vim zabbix_agentd.conf
...
Server=192.168.25.131
...
ServerActive=192.168.25.131
...
Hostname=MySQL_Slave1


[root@node03-Linux ~]# zabbix_agentd
[root@node03-Linux ~]# systemctl stop firewalld
[root@node03-Linux ~]# systemctl disable firewalld
[root@node03-Linux ~]# ss -antl
State      Recv-Q Send-Q Local Address:Port               Peer Address:Port              
LISTEN     0      128     *:10050               *:*                  
LISTEN     0      50      *:3306                *:*                  
LISTEN     0      128     *:22                  *:*                  
LISTEN     0      100    127.0.0.1:25                  *:*                  
LISTEN     0      128    :::22                 :::*                  
LISTEN     0      100       ::1:25                 :::*             

1 . 3 部署 MySQL环境

安装配置主数据库

[root@node02-linux ~]# yum -y install mariadb*
[root@node02-linux ~]# systemctl enable --now mariadb

#在主数据库里创建一个同步账号授权给从数据库使用
[root@node02-linux ~]# mysql
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 2
Server version: 5.5.65-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> create user 'repl'@'192.168.25.133' identified by 'repl123';
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> grant replication slave on *.* to 'repl'@'192.168.25.133';
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> exit
Bye

#配置主数据库
[root@node02-linux ~]# vim /etc/my.cnf
log-bin = mysql_bin
server-id = 10

#重启mysql服务
[root@node02-linux ~]# systemctl restart mariadb

#查看主库的状态
[root@node02-linux ~]# mysql
...
MariaDB [(none)]> show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql_bin.000001 |      245 |              |                  |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

安装配置从数据库

[root@node03-Linux ~]# yum -y install mariadb*
[root@node03-Linux ~]# vim /etc/my.cnf
server-id = 20
relay-log = myrelay_log
[root@node03-Linux ~]# systemctl enable --now mariadb

[root@node03-Linux ~]# mysql
...
MariaDB [(none)]> change master to \
    -> master_host='192.168.25.132',
    -> master_user='repl',
    -> master_password='repl123',
    -> master_log_file='mysql_bin.000001',
    -> master_log_pos=245;
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> start slave;
Query OK, 0 rows affected (0.00 sec)
MariaDB [(none)]> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.25.132
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql_bin.000001
          Read_Master_Log_Pos: 245
               Relay_Log_File: myrelay_log.000002
                Relay_Log_Pos: 529
        Relay_Master_Log_File: mysql_bin.000001
             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: 245
              Relay_Log_Space: 819
              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: 10
1 row in set (0.00 sec)


1 . 4 监控Mysql主从状态

1 . 4 . 1 编写脚本及配置

[root@node03-Linux ~]# mkdir -p /scripts/zabbix
[root@node03-Linux ~]# vim /scripts/zabbix/check_replication.sh
#!/bin/bash

mysql_status=$(mysql -uroot -e 'show slave status\G' 2>/dev/null|grep 'Slave.*Running'|grep -c 'Yes')

if [ $mysql_status -ne 2 ];then
    echo '1'
else
    echo '0'
fi

[root@node03-Linux ~]# vim /usr/local/etc/zabbix_agentd.conf
...
UnsafeUserParameters=1
...
UserParameter=check_replication,/bin/bash /scripts/zabbix/check_replication.sh
...

[root@node03-Linux ~]# pkill zabbix
[root@node03-Linux ~]# zabbix_agentd

1 . 4 . 2 添加主机并加入主机组

zabbix监控Mysql主从状态及延迟


zabbix监控Mysql主从状态及延迟


1 . 4 . 3 创建监控项

zabbix监控Mysql主从状态及延迟


1 . 4 . 4 添加触发器

zabbix监控Mysql主从状态及延迟

1 . 4 . 5 触发验证

[root@node03-Linux ~]# systemctl stop mariadb

zabbix监控Mysql主从状态及延迟


zabbix监控Mysql主从状态及延迟

2 . 监控Mysql主从延迟

通过命令“show slave status\G;”获取Seconds_Behind_Master这一项的值,可以作为主从延迟的值

2 . 1 配置并编写监控脚本

[root@node03-Linux ~]# vim /scripts/zabbix/delay_replication.sh
#!/bin/bash

delay_value=$(mysql -uroot -e 'show slave status\G' 2>/dev/null|grep 'Seconds_Behind_Master'|awk -F'[: ]+' '{print $3}')
echo $delay_value

[root@node03-Linux ~]# vim /usr/local/etc/zabbix_agentd.conf
...
UserParameter=delay_replication,/bin/bash /scripts/zabbix/delay_replication.sh
...

[root@node03-Linux ~]# pkill zabbix
[root@node03-Linux ~]# zabbix_agentd 

2 . 2 添加监控项

zabbix监控Mysql主从状态及延迟


zabbix监控Mysql主从状态及延迟

2 . 3 添加触发器

zabbix监控Mysql主从状态及延迟


zabbix监控Mysql主从状态及延迟

为了直观的看到效果,我们把没有延迟作为告警

2 . 4 触发验证

zabbix监控Mysql主从状态及延迟
zabbix监控Mysql主从状态及延迟

本文地址:https://blog.csdn.net/qq996616/article/details/107502328

相关标签: Linux