转载：http://www.ttlsa.com/zabbix/snmp-custom-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/ps aux | /bin/grep nginx | 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

snmp-oid

获取最新数据