自定义监控

自定义监控

准备工作

在客户端上启动自定义监控

[root@localhost ~]# cd /usr/local/etc/
[root@localhost etc]# ls
zabbix_agentd.conf  zabbix_agentd.conf.d
[root@localhost etc]# vim zabbix_agentd.conf
UnsafeUserParameters=1   //搜索Parameters 取消注释 并将值改为1

#文档最后添加自定义监控
//保存退出
UserParameter=check_process_mysql,/bin/bash /scropts/check_process.sh  
 //重启zavvix，查看端口号
[root@localhost ~]# pkill zabbix    
[root@localhost ~]# zabbix_agentd   
[root@localhost ~]# ss -antl
State   Recv-Q  Send-Q   Local Address:Port    Peer Address:Port Process  
LISTEN  0       128            0.0.0.0:10050        0.0.0.0:*             
LISTEN  0       128            0.0.0.0:22           0.0.0.0:*             
LISTEN  0       80                   *:3306               *:*             
LISTEN  0       128               [::]:22              [::]:*  
    
//安装并打开mysql
[root@localhost ~]# which mysqld
/usr/local/mysql/bin/mysqld
[root@localhost ~]# systemctl start mysqld.service 
[root@localhost ~]# systemctl status mysqld.service 
● mysqld.service - mysql server daemon
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendo>
   Active: active (running) since Sun 2022-07-10 08:25:20 EDT; 18min ago

编写脚本

[root@localhost etc]# mkdir /scripts/
[root@localhost etc]# cd /scripts/
[root@localhost scripts]# vim check_process.sh
[root@localhost scripts]# cat check_process.sh 
#!/bin/bash

count=$(ps -ef | grep -Ev "grep|$0" | grep -c $1)   //grep|$0会过滤脚本本身
if [ $count -eq 0 ];then
  echo '1'
else
  echo'0'
fi

//给脚本执行权限
[root@localhost scripts]# chmod +x check_process.sh
[root@localhost scripts]# ll
总用量 4
-rwxr-xr-x 1 root root 117 7月  10 08:39 check_process.sh

添加监控项

添加触发器

关闭mysql服务

[root@localhost ~]# systemctl stop mysqld.service
[root@localhost ~]# systemctl status mysqld.service
● mysqld.service - mysql server daemon
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: inactive (dead) since Sun 2022-07-10 09:11:11 EDT; 5min ago
  Process: 108048 ExecStop=/usr/local/mysql/support-files/mysqld stop (code=exited, status=0/SUCCESS)
  Process: 959 ExecStart=/usr/local/mysql/support-files/mysqld start (code=exited, status=0/SUCCESS)
 Main PID: 996 (code=exited, status=0/SUCCESS)

30s后，可以mysql服务开始告警

自定义监控日志

[root@localhost scropts]# chmod +x log.py    //给脚本log执行权限
[root@localhost scropts]# ll
总用量 8
-rwxr-xr-x. 1 root root  124 7月   9 10:17 check_process.sh
-rwxr-xr-x. 1 root root 1854 7月   9 12:15 log.py

//让zabbix用户对httpd的日志目录有读权限    
[root@localhost httpd]# setfacl -m u:zabbix:rx /var/log//httpd 
[root@localhost httpd]# getfacl /var/log/httpd/
getfacl: Removing leading '/' from absolute path names
# file: var/log/httpd/
# owner: root
# group: root
user::rwx
user:zabbix:r-x
group::---
mask::r-x

//安装python    
[root@localhost ~]# yum install python3 -y
上次元数据过期检查：0:40:53 前，执行于 2022年07月10日 星期日 08时52分25秒。
依赖关系解决。
==========================================================================
 软件包              架构   版本                          仓库       大小
==========================================================================
安装:
 python36            x86_64 3.6.8-38.module_el8.5.0+895+a459eca8
[root@localhost scropts]# python3 log.py /var/log/httpd/error_log    //正常执行结果为0 
0
[root@localhost scropts]# echo 'Error' >> /var/log/httpd/error_log   //向日志中添加Error
[root@localhost scropts]# python3 log.py /var/log/httpd/error_log    //脚本检查Error打印1
1 
[root@localhost scropts]# python3 log.py /var/log/httpd/error_log    //再次执行 因为日志是实时刷新 打印0
0

配置zabbix_agentd.conf文件
[root@localhost etc]# vim zabbix_agentd.conf
UserParameter=check_logs[*],/usr/bin/python3 /scropts/log.py $1 $2 $3   

[root@localhost ~]# pkill zabbix_agentd   
[root@localhost ~]# zabbix_agentd   //重启让文件生效