1.在客户端打开自定义监控

[root@localhost ~]# vim /usr/local/etc/zabbix_agentd.conf
...
UnsafeUserParameters=1     //此行取消注释，0改为1

### Option: UserParameter
# User-defined parameter to monitor. There can be several user-defined parameters.
# Format: UserParameter=<key>,<shell command>      //复制此行粘贴到文件最后
# See 'zabbix_agentd' directory for examples.
#
# Mandatory: no
# Default:
# UserParameter=

####### LOADABLE MODULES #######
...

2.自定义监控进程

//进程监控脚本
[root@localhost ~]# mkdir /scripts
[root@localhost ~]# cd /scripts/
[root@localhost scripts]# vim check_process.sh
#!/bin/bash

status=$(ps -ef|grep -Ev "grep|$0"|grep -w "$1"|wc -l)

if [ $status -eq 0 ];then
    echo '1'
else
    echo '0'
fi
[root@localhost scripts]# chmod +x check_process.sh
[root@localhost scripts]# bash check_process.sh httpd
1
[root@localhost scripts]# bash check_process.sh mysqld
0

//改属主
[root@localhost scripts]# chown -R zabbix.zabbix /scripts/
[root@localhost scripts]# ll /scripts/
总用量 4
-rwxr-xr-x. 1 zabbix zabbix 129 12月 25 10:05 check_process.sh

//修改配置文件
[root@localhost ~]# vim /usr/local/etc/zabbix_agentd.conf
...
### Option: TLSPSKFile
# Full pathname of a file containing the pre-shared key.
#
# Mandatory: no
# Default:
# TLSPSKFile=
UserParameter=check_process[*],/bin/bash /scripts/check_process.sh $1

//重启服务
[root@localhost ~]# pkill zabbix_agentd
[root@localhost ~]# zabbix_agentd 
[root@localhost ~]# ss -antl
State Recv-Q Send-Q Local Address:Port Peer Address:Port              
LISTEN 0 128 *:22 *:*                  
LISTEN 0 100 127.0.0.1:25 *:*                  
LISTEN 0 128 *:10050 *:*                  
LISTEN 0 25 *:514 *:*                  
LISTEN 0 128 :::22 :::*                  
LISTEN 0 100 ::1:25 :::*                  
LISTEN 0 25 :::514 :::*                  
LISTEN 0 80 :::3306  

//配置zabbix网页

//关闭mysqld服务

[root@localhost ~]# service mysqld stop
Shutting down MySQL.. SUCCESS! 

3.自定义监控日志

[root@localhost pyscripts-master]# ls
log.py  mail_send.py  README.md  定时发微信群消息.zip
[root@localhost pyscripts-master]# cp log.py /scripts/
[root@localhost pyscripts-master]# cd /scripts/
[root@localhost scripts]# ls
check_process.sh  log.py
[root@localhost scripts]# chmod +x log.py 
[root@localhost scripts]# chown zabbix.zabbix log.py
[root@localhost scripts]# cat log.py 
#!/usr/bin/env python3
import sys
import re

def prePos(seekfile):
    global curpos
    try:
        cf = open(seekfile)
    except IOError:
        curpos = 0
        return curpos
    except FileNotFoundError:
        curpos = 0
        return curpos
    else:
        try:
            curpos = int(cf.readline().strip())
        except ValueError:
            curpos = 0
            cf.close()
            return curpos
        cf.close()
    return curpos

def lastPos(filename):
    with open(filename) as lfile:
        if lfile.readline():
            lfile.seek(0,2)
        else:
            return 0
        lastPos = lfile.tell()
    return lastPos

def getSeekFile():
    try:
        seekfile = sys.argv[2]
    except IndexError:
        seekfile = '/tmp/logseek'
    return seekfile

def getKey():
    try:
        tagKey = str(sys.argv[3])
    except IndexError:
        tagKey = 'Error'
    return tagKey

def getResult(filename,seekfile,tagkey):
    destPos = prePos(seekfile)
    curPos = lastPos(filename)

    if curPos < destPos:
        curpos = 0

    try:
        f = open(filename)
    except IOError:
        print('Could not open file: %s' % filename)
    except FileNotFoundError:
        print('Could not open file: %s' % filename)
    else:
        f.seek(destPos)

        while curPos != 0 and f.tell() < curPos:
            rresult = f.readline().strip()
            global result
            if re.search(tagkey, rresult):
                result = 1
                break
            else:
                result = 0

        with open(seekfile,'w') as sf:
            sf.write(str(curPos))
    finally:
        f.close()
    return result

if __name__ == "__main__":
    result = 0
    curpos = 0
    tagkey = getKey()
    seekfile = getSeekFile()
    result = getResult(sys.argv[1],seekfile,tagkey)
    print(result)
[root@localhost scripts]# vim /usr/local/etc/zabbix_agentd.conf
...
### Option: TLSPSKFile
#       Full pathname of a file containing the pre-shared key.
#
# Mandatory: no
# Default:
# TLSPSKFile=
UserParameter=check_process[*],/bin/bash /scripts/check_process.sh $1
UserParameter=check_log[*],/usr/bin/python /scripts/log.py $1 $2 $3
[root@localhost scripts]# pkill zabbix_agentd
[root@localhost scripts]# zabbix_agentd 
[root@localhost scripts]# setfacl -m u:zabbix:r-x /var/log/httpd/

//在服务端手动执行
[root@liping ~]# zabbix_get -s 192.168.136.145 -k check_log[/var/log/httpd/error_log]
0

//配置zabbix网页

//在客户端改监控文件

[root@localhost ~]# echo 'Error' >>/var/log/httpd/error_log

4.自定义监控zabbix主从

//监控处从脚本
[root@localhost scripts]# vim mysql_repl.sh

#!/bin/bash

status=$(mysql -uroot -p123456 -e 'show slave status\G' 2>/dev/null |grep -E 'Slave_IO_Running|Slave_SQL_Running:'|grep -c 'Yes')

if [ $status -ne 2 ];then
    echo '1'
else
    echo '0'
fi
[root@localhost scripts]# chmod +x mysql_repl.sh 
[root@localhost scripts]# bash mysql_repl.sh 
0

//编辑配置文件
[root@localhost ~]# vim /usr/local/etc/zabbix_agentd.conf
...
### Option: TLSPSKFile
#       Full pathname of a file containing the pre-shared key.
#
# Mandatory: no
# Default:
# TLSPSKFile=
UserParameter=check_process[*],/bin/bash /scripts/check_process.sh $1
UserParameter=check_log[*],/usr/bin/python /scripts/log.py $1 $2 $3
UserParameter=check_mr,/bin/bash /scripts/mysql_repl.sh
[root@localhost ~]# chown zabbix.zabbix /scripts/mysql_repl.sh 
[root@localhost ~]# ll /scripts/
总用量 12
-rwxr-xr-x. 1 zabbix zabbix  129 12月 25 10:05 check_process.sh
-rwxr-xr-x. 1 zabbix zabbix 1854 12月 25 10:47 log.py
-rwxr-xr-x. 1 zabbix zabbix  204 12月 25 11:43 mysql_repl.sh

//重启服务
[root@localhost ~]# pkill zabbix
[root@localhost ~]# zabbix_agentd 

//配置zabbix网页

//关闭一个mysqld

[root@localhost ~]# service mysqld stop
Shutting down MySQL............ SUCCESS!

5.自定义监控zabbix主从延迟

\\监控延迟脚本
[root@localhost scripts]# vim mysql_delay.sh

#!/bin/bash

delay=$(mysql -uroot -p123456 -e 'show slave status\G' 2>/dev/null|grep 'Seconds_Behind_Master'|awk '{print $2}')

echo $delay
[root@localhost scripts]# vim mysql_delay.sh
[root@localhost scripts]# chown -R zabbix.zabbix mysql_delay.sh
[root@localhost scripts]# chmod +x mysql_delay.sh 
[root@localhost scripts]# ll mysql_delay.sh 
-rwxr-xr-x. 1 zabbix zabbix 140 12月 25 18:16 mysql_delay.sh

\\编辑配置文件
[root@localhost ~]# vim /usr/local/etc/zabbix_agentd.conf
...
### Option: TLSPSKFile
#       Full pathname of a file containing the pre-shared key.
#
# Mandatory: no
# Default:
# TLSPSKFile=
UserParameter=check_process[*],/bin/bash /scripts/check_process.sh $1
UserParameter=check_log[*],/usr/bin/python /scripts/log.py $1 $2 $3
UserParameter=check_mr,/bin/bash /scripts/mysql_repl.sh
UserParameter=mysql_delay,/bin/bash /scripts/mysql_delay.sh

\\重启服务
[root@localhost ~]# pkill zabbix
[root@localhost ~]# zabbix_agentd 

\配置zabbix网页