zabbix监控之自定义item
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zabbix安装完成后,当需要使用自定义脚本构建自定义item必须注意以下几点:
1.首先使用zabbix_get手动在zabbix-server服务端获取监控的默认的item值,如下:
[[email protected] ~]# zabbix_get -s 39.106.219.238 -p 10050 -k "system.swap.size[,free]" 0
当遇到zabbix_get命令没有找到时,解决办法:yum install -y zabbix_get
2.在zabbix-server端打开配置文件找到:
AlertScriptsPath=/usr/lib/zabbix/alertscripts
默认将自定义的脚本放在该位置
3.在zabbix-agent端打开配置文件找到:
Include=/usr/local/etc/zabbix_agentd.conf.d/.conf
确认上面几步后,现在开始创建自定义脚本创建自定义item:
1.编写item脚本:
#!/usr/bin/env python import mysqldb class Db: def __init__(self, host1, user1, password1, db1): self.host = host1 self.user = user1 self.password = password1 self.db = db1 try: self._conn = MySQLdb.connect(host=self.host, user=self.user, passwd=self.password, db=self.db) except Exception as e: print e self._cursor = self._conn.cursor() def fetchone(self, sql1): self._cursor.execute(sql1) result = self._cursor.fetchone() return result host = ‘172.16.23.131‘ user = ‘root‘ db = ‘mysql‘ password = ‘redhat‘ sql = "show global status like ‘questions‘;" sql1 = "show global status like ‘uptime‘;" if __name__ == ‘__main__‘: db_conn = Db(host, user, password, db) result = db_conn.fetchone(sql) result1 = db_conn.fetchone(sql1) print int(result[1])/int(result1[1])
手动执行:
[[email protected] zabbix_agentd.d]# python /usr/lib/zabbix/alertscripts/getQueryCountFromMysql.py 7
将该脚本赋予执行权限:chmod +x /usr/lib/zabbix/alertscripts/getQueryCountFromMysql.py
2.在zabbix-agent端编写配置文件:重启zabbix-agent服务
/etc/zabbix/zabbix_agentd.d/userparameter_script.conf
[[email protected] zabbix_agentd.d]# cat userparameter_script.conf UserParameter=script.getQueryCountFromMysql.py,/usr/lib/zabbix/alertscripts/getQueryCountFromMysql.py
格式:UserParameter=key,command
手动在zabbix-server端获取值:
[[email protected] zabbix_agentd.d]# zabbix_get -s 172.16.23.131 -k script.getQueryCountFromMysql.py 7
手动获取到值后,在zabbix页面进行配置:
1.创建自定义template:
2.创建自定义item:
3.创建自定义graph:
上面各步骤创建完成后,将此template加在host上:
过一段时间后,查看graphs:
可以看出自定义item的值已经可以显示出来了
如果自定义脚本带有参数的话,做如下修改:
[[email protected] alertscripts]# cat /usr/lib/zabbix/alertscripts/getmysqlstatu.py #!/usr/bin/env python # -*- coding: UTF-8 -*- import MySQLdb import sys class Db: def __init__(self, host1, user1, password1, db1): self.host = host1 self.user = user1 self.password = password1 self.db = db1 try: self._conn = MySQLdb.connect(host=self.host, user=self.user, passwd=self.password, db=self.db) # 连接mysql except Exception as e: print e self._cursor = self._conn.cursor() # 创建游标 def fetchone(self, sql1): self._cursor.execute(sql1) # 执行sql语句 result = self._cursor.fetchone() # 获取执行的结果 return result def getops(self): questions = db_conn.fetchone(sql_questions) uptime = db_conn.fetchone(sql_uptime) return int(questions[1])/int(uptime[1]) host = ‘127.0.0.1‘ user = ‘root‘ db = ‘mysql‘ password = ‘redhat‘ sql_questions = "show global status like ‘questions‘;" sql_uptime = "show global status like ‘uptime‘;" if __name__ == ‘__main__‘: db_conn = Db(host, user, password, db) result = db_conn.getops() if sys.argv[1] == ‘qps‘: print result
# chmod +x getmysqlstatu.py
然后在zabbix-agent做下面配置:
[[email protected] alertscripts]# cat /etc/zabbix/zabbix_agentd.d/userparameter_script.conf UserParameter=script.getQueryCountFromMysql.py,/usr/lib/zabbix/alertscripts/getQueryCountFromMysql.py UserParameter=script.getmysqlstatu.py[*],/usr/lib/zabbix/alertscripts/getmysqlstatu.py $1
在zabbix-server端手动获取item的值:
[[email protected] alertscripts]# zabbix_get -s 172.16.23.131 -k script.getmysqlstatu.py[qps] 7
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