zabbix自定义监控进程，日志，mysql主从

//关闭防火墙
[root@zabbix ~]# systemctl stop firewalld
[root@mf1 ~]# systemctl stop firewalld

//创建脚本
[root@mf1 ~]# mkdir /scripts
[root@mf1 ~]# cd /scripts/
[root@mf1 scripts]# ls
[root@mf1 scripts]# vim check_process.sh

#!/bin/bash

count=$(ps -ef | grep -Ev "grep|$0" | grep -c "$1")
if [ $count -eq 0 ];then
                echo "1"
        else    
                        echo "0"
                fi

[root@mf1 scripts]# chmod +x check_process.sh 

//用绝对路径执行脚本
[root@mf1 scripts]# ./check_process.sh /usr/local/apache/bin/httpd
0
输出为0，说明进程没问题

//进入zabbix_agentd.conf文件里，再最后面加入这两行
[root@mf1 scripts]# vim /usr/local/etc/zabbix_agentd.conf
。。。。。。
UnsafeUserParameters=1
UserParameter=check_apache,/scripts/check_process.sh /usr/local/apache/bin/httpd

[root@mf1 scripts]# pkill zabbix
[root@mf1 scripts]# zabbix_agentd 

//在服务端上查看能否取到刚才配置脚本的值
[root@zabbix ~]# zabbix_get -s 192.168.186.131 -k check_apache
0

//手动触发报警
[root@mf1 scripts]# apachectl stop

[root@mf1 scripts]# yum -y install python36

//log.py作用：检查日志文件中是否有指定的关键字
第一个参数为日志文件名（必须有，相对路径、绝对路径均可）
第二个参数为seek position文件的路径（可选项，若不设置则默认为/tmp/logseek文件。相对路径、绝对路径均可）
第三个参数为搜索关键字，默认为 Error

[root@mf1 scripts]# vim 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@mf1 scripts]# chmod +x log.py 
[root@mf1 scripts]# ll
total 28
-rwxr-xr-x 1 root root   142 Apr 28 20:26 check_process.sh
-rwxr-xr-x 1 root root 21374 Apr 28 20:57 log.py
[root@mf1 scripts]# touch /usr/local/apache/logs/error.log
[root@mf1 scripts]# vim /usr/local/etc/zabbix_agentd.conf
UnsafeUserParameters=check_logs[*],/scripts/log.py $1 $2 $3
[root@mf1 scripts]# pkill zabbix
[root@mf1 scripts]# zabbix_agentd

//在服务端上查看能否取到刚才配置py脚本的值

[root@zabbix ~]# zabbix_get -s 192.168.186.131 -k check_logs["/usr/local/apache/logs/error.log","/tmp/seek","Error"]
0

//手动触发报警
[root@mf1 scripts]# echo ‘Error‘ >> /usr/local/apache/logs/error.log
[root@mf1 scripts]# 

//输出1表示主从有问题，0表示没问题()
[root@mf1 scripts]# vim check_mysql_repl.sh

#!/bin/bash

count=$(mysql -uroot -e ‘show slave status\G‘|grep ‘ Running:‘|awk ‘{print $2}‘|grep -c ‘Yes‘)
if [ $count -ne 2 ];then
                echo ‘1‘
        else
                        echo ‘0‘
                fi

[root@mf1 scripts]# chmod +x check_mysql_repl.sh 
//在文件最后面加入下面这行代码
[root@mf1 scripts]# vim /usr/local/etc/zabbix_agentd.conf
UserParameter=check_mysql_repl,/scripts/check_mysql_repl.sh

[root@mf1 scripts]# pkill zabbix
[root@mf1 scripts]# zabbix_agentd

//在服务端上查看能否取到刚才配置脚本的值