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zabbix snmp自定义OID nginx监控实例(55)

为什么要自定义OID?

前面的文章我们已经讲过zabbix如何使用snmp监控服务器,但是他有一个很明显的局限性:只能监控定义好的OID项目,假如我们想知道nginx进程是否在运行?在没有zabbix agent的情况下,我们该怎么做呢?接下来就用这个实力来讲解自定义OID

 

确认SNMP OID是否存在

首先我们需要找一个oid是否被系统暂用,比如.1.3.6.1.4.1.2021.5000

# snmpwalk -v 2c -c public www.ttlsa.com .1.3.6.1.4.1.2021.5000
 UCD-SNMP-MIB::ucdavis.5000 = No Such Object available on this agent at this OID

如上说明不存在

增加自定SNMP OID

编写脚本

# cat /root/scripts/check_nginx.sh
#!/bin/bash
nginxNum=`/bin/psaux | /bin/grepnginx |wc-l`
echo$nginxNum

 

修改配置

# vim /etc/snmp/snmpd.conf
 extend .1.3.6.1.4.1.2021.5000  check_nginx /root/scripts/check_nginx.sh // 增加这一行

获取snmp信息

以下获取自定义的oid的所有数据,第一行便是我们需要获取的数据,那么在zabbix中写oid .1.3.6.1.4.1.2021.5000.4.1.2.11.99.104.101.99.107.95.110.103.105.110.120.1

# snmpwalk -v 1 -c public 173.219.255.122 .1.3.6.1.4.1.2021.5000
UCD-SNMP-MIB::ucdavis.5000.1.0 = INTEGER: 1
UCD-SNMP-MIB::ucdavis.5000.2.1.2.11.99.104.101.99.107.95.110.103.105.110.120 = STRING:"/root/scripts/check_nginx.sh"
UCD-SNMP-MIB::ucdavis.5000.2.1.3.11.99.104.101.99.107.95.110.103.105.110.120 =""
UCD-SNMP-MIB::ucdavis.5000.2.1.4.11.99.104.101.99.107.95.110.103.105.110.120 =""
UCD-SNMP-MIB::ucdavis.5000.2.1.5.11.99.104.101.99.107.95.110.103.105.110.120 = INTEGER: 5
UCD-SNMP-MIB::ucdavis.5000.2.1.6.11.99.104.101.99.107.95.110.103.105.110.120 = INTEGER: 1
UCD-SNMP-MIB::ucdavis.5000.2.1.7.11.99.104.101.99.107.95.110.103.105.110.120 = INTEGER: 1
UCD-SNMP-MIB::ucdavis.5000.2.1.20.11.99.104.101.99.107.95.110.103.105.110.120 = INTEGER: 4
UCD-SNMP-MIB::ucdavis.5000.2.1.21.11.99.104.101.99.107.95.110.103.105.110.120 = INTEGER: 1
UCD-SNMP-MIB::ucdavis.5000.3.1.1.11.99.104.101.99.107.95.110.103.105.110.120 = STRING:"6"
UCD-SNMP-MIB::ucdavis.5000.3.1.2.11.99.104.101.99.107.95.110.103.105.110.120 = STRING:"6"
UCD-SNMP-MIB::ucdavis.5000.3.1.3.11.99.104.101.99.107.95.110.103.105.110.120 = INTEGER: 1
UCD-SNMP-MIB::ucdavis.5000.3.1.4.11.99.104.101.99.107.95.110.103.105.110.120 = INTEGER: 0
UCD-SNMP-MIB::ucdavis.5000.4.1.2.11.99.104.101.99.107.95.110.103.105.110.120.1 = STRING:"6"

创建snmp item

nginx

snmp-oid

获取最新数据

nginx

snmp获取nginx数据

接下来创建触发器以及报警,我就不多说了,大家可以参考《zabbix触发器》

zabbix snmp自定义OID nginx监控实例(55)