Zabbix SNMP Custom OID Nginx Monitor instance (55)

Why should I customize the OID?

In the previous article we've talked about how Zabbix uses SNMP to monitor the server, but he has one obvious limitation: only the well-defined OID project can be monitored, if we want to know if the nginx process is running? What should we do without the Zabbix agent? Next, use this power to explain the custom OID .

Confirm that the SNMP OID is present

First we need to find out if an OID is being taken over by the system, such as. 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 the This agent in this OID

As stated above does not exist

To increase the custom SNMP OID

Writing scripts

# cat/root/scripts/check_nginx.sh

#!/bin/bash

Nginxnum= '/bin/psaux | /bin/grepnginx |wc-l '

Echo$nginxnum

Modify Configuration

# vim/etc/snmp/snmpd.conf

Extend. 1.3.6.1.4.1.2021.5000 check_nginx/root/scripts/check_nginx.sh//Add this line

Get SNMP Information

The following gets all the data for the custom OID, the first line is the data we need to get, then write the OID in Zabbix. 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"

Create SNMP Item

Snmp-oid

Get the latest data

SNMP gets nginx data

Next create the trigger and alarm, I will not say more, you can refer to the "Zabbix trigger"

Zabbix SNMP Custom OID Nginx Monitor instance (55)