zabbix监控mysql

Posted 2022-04-15

数据库做为生产环境中最重要的一环，那么它的状态必然是最值得关心的。特别是主从复制，为了保持数据的一致性，监控mysql的主从复制状态也是必不可少的。

部署mysql主从复制监控

部署系统及环境

[[email protected] ~]#cat /etc/redhat-release 
CentOS Linux release 7.6.1810 (Core)
#关闭selinux和防火墙
[[email protected] ~]#setenforce 0
[[email protected] ~]#systemctl stop firewalld

配置mysql数据库

mysql主服务器配置

[[email protected] ~]#yum install mariadb-server -y
[[email protected] ~]#vim /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0

#加入以下三行
skip_name_resolve
log_bin
server_id=1

[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid

!includedir /etc/my.cnf.d
systemctl start mariadb
mysql
MariaDB [(none)]> show master logs;
+--------------------+-----------+
| Log_name           | File_size |
+--------------------+-----------+
| mariadb-bin.000001 |       264 |
| mariadb-bin.000002 |       264 |
| mariadb-bin.000003 |       245 |
+--------------------+-----------+
3 rows in set (0.00 sec)
MariaDB [(none)]> GRANT REPLICATION SLAVE,REPLICATION CLIENT ON *.* TO ‘zabbix_mysql‘@‘192.168.8.%‘ IDENTIFIED BY ‘123456‘;

mysql从服务器配置

[[email protected] ~]#yum install mariadb-server -y
[[email protected] ~]#vim /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock

#加入以下三行
skip_name_resolve
server_id=2
read_only

symbolic-links=0

[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid

!includedir /etc/my.cnf.d
[[email protected] ~]#systemctl start mariadb

配置主从复制

[[email protected] ~]#mysql
MariaDB [(none)]> CHANGE MASTER TO
    ->   MASTER_HOST=‘192.168.8.22‘,
    ->   MASTER_USER=‘zabbix_mysql‘,
    ->   MASTER_PASSWORD=‘123456‘,
    ->   MASTER_PORT=3306,
    ->   MASTER_LOG_FILE=‘mariadb-bin.000003‘,
    ->   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: 192.168.8.22
                  Master_User: zabbix_mysql
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mariadb-bin.000003
          Read_Master_Log_Pos: 245
               Relay_Log_File: mariadb-relay-bin.000010
                Relay_Log_Pos: 531
        Relay_Master_Log_File: mariadb-bin.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: 245
              Relay_Log_Space: 1113
              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: 1                 

配置mysql从服务器端的zabbix-agent

[[email protected] ~]#yum install zabbix-agent -y
[[email protected] ~]#vim /etc/zabbix/zabbix_agentd.conf
#主动监控ip地址
98：Server=192.168.8.21
#被动监控ip地址
139：ServerActive=192.168.8.21
#本机ip地址，也可写主机名
150： Hostname=192.168.8.23
[[email protected] ~]#systemctl start zabbix-agent
[[email protected] ~]#systemctl enable zabbix-agen

在web界面添加监控主机

查看主机是否添加成功

配置主从复制监控

编写监控脚本

[[email protected] ~]#vim /etc/zabbix/zabbix_agentd.d/mysql_status.sh 
#!/bin/bash
mysql_io_status=`mysql -uroot -hlocalhost -e "show slave status\G;" | grep "Slave_IO_Running" | awk ‘print $2‘`
mysql_sql_status=`mysql -uroot -hlocalhost -e "show slave status\G;" | grep "Slave_SQL_Running" | awk ‘print $2‘`
mysql_timeout=`mysql -uroot -hlocalhost -e "show slave status\G;" | grep "Seconds_Behind_Master" | awk ‘print $2‘`
case $1 in
        status)
                if [ $mysql_io_status == "Yes" -a $mysql_sql_status == "Yes" ]
        then
                echo 50
        else
                echo 100
        fi
        ;;
        timeout)
                if [ $mysql_timeout == "NULL" ]
        then
                echo 10000
        else
                echo $mysql_timeout
        fi
        ;;
esac
[[email protected] ~]#chown zabbix.zabbix /etc/zabbix/zabbix_agentd.d/mysql_status.sh

更改zabbix-agent配置文件，并重启

[[email protected] ~]#vim /etc/zabbix/zabbix_agentd.conf 
287：nsafeUserParameters=1
297：UserParameter=mysql.status[*],/etc/zabbix/zabbix_agentd.d/mysql_status.sh $1 $2
[[email protected] ~]#systemctl restart zabbix-agent

zabbix-server端进行测试，查看是否能够检测到数据

[[email protected] ~]#zabbix_get -s 192.168.8.23 -k "mysql.status[status]"
50
[[email protected] ~]#zabbix_get -s 192.168.8.23 -k "mysql.status[timeout]"
0

在web界面添加监控主从复制监控

添加监控模板

添加监控项



添加触发器



添加图形


让监控主机关联模板


查看监控数据

w10修改zabbix中文字体乱码

在电脑上随便找个中文字体

把字体拷贝到/usr/share/zabbix/assets/fonts/目录下

[[email protected] ~]#mv /usr/share/zabbix/assets/fonts/simsun.ttc /usr/share/zabbix/assets/fonts/simsun.ttf
[[email protected] ~]#vim /usr/share/zabbix/include/defines.inc.php 
#改成字体文件的前缀
69：define(‘ZBX_GRAPH_FONT_NAME‘,           ‘simsun‘); // font file name

再次查看web界面的中文字体