• zabbix自定义监控进程、日志、mysql主从


    环境说明:

    zabbix服务器: 192.168.100.1 服务端 (已经装好zabbix_agentd和zabbix_server,且为MySQL主)

    zabbix客户端: 192.168.100.128 客户端 (已经装好zabbix_agentd,已经安装好apache服务,且为MySQL从,数据库没有密码)

    监视客户端的apache进程:

    关闭两台机器的防火墙和selinux:

    [root@zabbix ~]# systemctl stop firewalld
    [root@zabbix ~]# setenforce 0

    以查看进程方式过滤apache进程,输出1表示进程有问题,0表示没问题

    [root@zabbix ~]# cat /scripts/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
    
    //给脚本执行权限
    [root@zabbix ~]# chmod +x /scripts/check_process.sh 
    
    //源码安装执行此脚本要加绝对路径
    [root@zabbix ~]# /scripts/check_process.sh httpd
    0
    [root@zabbix ~]# ss -antl
    State     Recv-Q     Send-Q          Local Address:Port            Peer Address:Port     
    LISTEN    0          128                   0.0.0.0:22                   0.0.0.0:*        
    LISTEN    0          128                   0.0.0.0:10050                0.0.0.0:*        
    LISTEN    0          128                   0.0.0.0:9000                 0.0.0.0:*        
    LISTEN    0          128                      [::]:22                      [::]:*        
    LISTEN    0          80                          *:3306                       *:*        
    LISTEN    0          128                         *:80                         *:*   
    
    //在文件的最后面加上两行开启自定义监控的配置
    UnsafeUserParameters=1
    UserParameter=check_apache,/scripts/check_process.sh httpd
    
    
    //客户端这边关闭了apache的进程
    [root@zabbix ~]# ss -antl
    State     Recv-Q     Send-Q          Local Address:Port            Peer Address:Port     
    LISTEN    0          128                   0.0.0.0:22                   0.0.0.0:*        
    LISTEN    0          128                   0.0.0.0:10050                0.0.0.0:*        
    LISTEN    0          128                   0.0.0.0:9000                 0.0.0.0:*        
    LISTEN    0          128                      [::]:22                      [::]:*        
    LISTEN    0          80                          *:3306                       *:* 
    
    //在服务端上查看能否取到刚才配置脚本的值
    [root@zabbix ~]# zabbix_get -s 192.168.100.128 -k check_apache
    1
    //能取到1说明没问题了

    配置网页zabbix的流程

    添加主机监控之类的操作请参考zabbix监控配置

     

     

     

     

     

    这里的HOST.NAME别写错了 

     

     

    //受控机手动触发报警
    [root@zabbix ~]# apachectl start
    [root@zabbix ~]# apachectl stop

     

     配置监控日志流程

    //当前在受控机
    [root@zabbix scripts]# pwd
    /scripts
    [root@zabbix ~]# dnf -y install python36
    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@zabbix 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@zabbix scripts]# chmod +x log.py 
    [root@zabbix scripts]# touch /usr/local/apache/logs/error.log
    //在文件最后添加
    [root@zabbix scripts]# vim /usr/local/etc/zabbix_agentd.conf
    UserParameter=check_logs[*],/scripts/log.py $1 $2 $3
    
    [root@zabbix scripts]# pkill zabbix
    [root@zabbix 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 192.168.100.128 -k check_logs["/usr/local/apache/logs/error.log","/tmp/seek","Error"]
    
    //手动触发报警
    [root@zabbix scripts]# echo 'Error' >> /usr/local/apache/logs/error.log

    网页监控配置流程

     

     

     

     

    监控客户端的mysql主从状态

    配置mysql主从

    //关闭防火墙和selinux(两台机都要执行)
    [root@zabbix ~]# systemctl stop firewalld
    [root@zabbix ~]# setenforce 0
    
    //当前在主控机
    [root@zabbix ~]# mysql -uroot -p123456
    //配置授权登录用户
    mysql> grant replication slave on *.* to 'repl'@'192.168.100.128' identified by '123';
    Query OK, 0 rows affected, 1 warning (0.00 sec)
    mysql>  flush privileges;
    Query OK, 0 rows affected (0.00 sec)
    mysql>  exit
    
    [root@zabbix ~]# vim /etc/my.cnf
    log-bin = mysql-bin
    server-id = 1
    
    //主控机的mysql是用yum安装的所以重启使用systemctl命令
    [root@zabbix ~]# systemctl restart mysql
    [root@zabbix ~]# mysql -uroot -p123456
    mysql> show master status;
    +------------------+----------+--------------+------------------+-------------------+
    | File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
    +------------------+----------+--------------+------------------+-------------------+
    | mysql-bin.000001 |     3629 |              |                  |                   |
    +------------------+----------+--------------+------------------+-------------------+
    1 row in set (0.00 sec)
    
    
    //当前在受控机
    [root@zabbix ~]# vim /etc/my.cnf
    [mysqld]
    server-id=20
    relay-log=myrelay
    
    //重启mysql,受控机mysql是源码装的所以使用service命令
    [root@zabbix ~]# service mysql restart
    [root@zabbix ~]# mysql -uroot
    
    mysql> change master to 
        -> master_host='192.168.100.1',
        -> master_user='repl',
        -> master_log_file='mysql-bin.000001',
        -> master_log_pos=3629;
    Query OK, 0 rows affected, 2 warnings (0.10 sec)
    
    [root@zabbix ~]# vim /scripts/check_mysql_repl.sh
    #!/bin/bash
    
    count=$(mysql -uroot -e 'show slave statusG'|grep 'Running:'|awk '{print $2}'|grep -c 'Yes')
    
    if [ $count -ne 2 ];then
            echo '1'
    else    
            echo '0'
    fi 
    
    [root@zabbix ~]# chmod +x /scripts/check_mysql_repl.sh
    //测试脚本
    [root@zabbix ~]#  /scripts/check_mysql_repl.sh
    
    //在主控机测试
    [root@zabbix ~]# zabbix_get -s 192.168.100.128 -k check_musql_repl
    //当前在受控机
    [root@zabbix scripts]# vim check_mysql_repl.sh 
    
    #!/bin/bash
      
    count=$(mysql -uroot -e 'show slave statusG'|grep ' Running:'|awk '{print $2}'|grep -c 'Yes')
    if [ $count -ne 2 ];then
            echo '1'
    else
            echo '0'
    fi
    
    //输出1表示主从有问题,0表示没问题
    [root@zabbix scripts]# vim /usr/local/etc/zabbix_agentd.conf
    UserParameter=check_mysql_repl,/scripts/check_mysql_repl.sh
    
    [root@zabbix scripts]# pkill zabbix
    [root@zabbix 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 192.168.100.128 -k check_mysql_repl

    网页监控配置流程

     

     

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  • 原文地址:https://www.cnblogs.com/lichouluoyu/p/14716166.html
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