zabbix自定义监控进程、日志文件、mysql主从状态

##编写检查进程的脚本
[root@localhost scripts]# cat check_process.sh 
#!/bin/bash

content=$(ps -ef | grep -Ev "grep|$0" | grep -c "$1")

if [ $content -eq 0 ];then
    echo 1				//正常
else
    echo 0				//不正常
fi

##修改配置文件
[root@localhost ~]# vim /usr/local/etc/zabbix_agentd.conf
·····
# Default: SOMAXCONN (hard-coded constant, depends on system)
# ListenBacklog=
UserParameter=check_process[*],/scripts/check_process.sh $1 

##在服务端测试
[root@localhost etc]# zabbix_get -s 192.168.100.120 -k check_process[httpd]
0

##脚本配置
[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)
    
##追加配置文件
[root@localhost ~]# vim /usr/local/etc/zabbix_agentd.conf
·····
# Default: SOMAXCONN (hard-coded constant, depends on system)
# ListenBacklog=
UserParameter=check_process[*],/scripts/check_process.sh $1
UserParameter=check_log[*],/scripts/log.py $1 $2 $3 ##添加此行

##更改权限
[root@localhost ~]# chmod 755 /var/log/httpd/

##测试
[root@localhost etc]# zabbix_get -s 192.168.100.120 -k check_log[/var/log/httpd/error_log]
0

##编写脚本
[root@localhost scripts]# cat mysql_status.sh 
#!/bin/bash
USER=root
PASSWD=123456
NAME=$1

IO {
    Slave_IO_Running=`mysql -u $USER -p$PASSWD -e "show slave statusG;" 2> /dev/null | grep Slave_IO_Running | awk '{print $2}'`
    if [ $Slave_IO_Running == "Yes" ];then
        echo 0 		//IO进程正常
    else
        echo 1 		//IO进程故障
    fi
}

SQL {
    Slave_SQL_Running=`mysql -u $USER -p$PASSWD -e "show slave statusG;" 2> /dev/null |grep Slave_SQL_Running: |awk '{print $2}'`
    if [ $Slave_SQL_Running == "Yes" ];then
        echo 0 		//SQL进程正常
    else
        echo 1 		//SQL进程故障
    fi

}

case $NAME in
   io)
       IO
   ;;
   sql)
       SQL
   ;;
   *)
        echo -e "Usage: $0 [io | sql]"
esac

##设置配置文件
[root@localhost etc]# vim zabbix_agentd.conf
······
# Default: SOMAXCONN (hard-coded constant, depends on system)
# ListenBacklog=
UserParameter=check_process[*],/scripts/check_process.sh $1
UserParameter=check_log[*],/scripts/log.py $1 $2 $3
UserParameter=mysql.slave[*],/scripts/mysql_status.sh $1

##重启
[root@localhost etc]# pkill zabbix_agentd 
[root@localhost etc]# zabbix_agentd 

##测试
[root@localhost ~]# zabbix_get -s 192.168.100.120 -k mysql.slave[sql]
0
[root@localhost ~]# zabbix_get -s 192.168.100.120 -k mysql.slave[io]
0
[root@localhost ~]# zabbix_get -s 192.168.100.120 -k mysql.slave[io,sql]
0