September 2005
Beginner
462 pages
12h 56m
English
Content preview from Essential SNMP, 2nd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 11. Adapting SNMP to Fit Your Environment
SNMP can make your life as a system administrator a lot easier by performing many of the tasks that you'd either have to do by hand or automate by writing some clever script. It's relatively easy to take care of most everyday system monitoring: SNMP can poll for disk-space utilization, notify you when mirrors are syncing, or record who is logging in or out of the system. This chapter introduces some interesting scripts for automating common system administration tasks. The SNMP scripts in this chapter represent just a few of the things SNMP allows you to do; use them as a launching pad for your own ideas.
General Trap-Generation Program
Chapter 9 contained some scripts for collecting SNMP information using Perl, OpenView's snmptrap program, and some other tools. Here's how we used snmptrap to generate a trap giving us information about some problems with the database:
$ /opt/OV/bin/snmptrap -c public nms .1.3.6.1.4.1.2789.2500 "" 6 3003 "" \
.1.3.6.1.4.1.2500.3003.1 octetstringascii "Oracle" \
.1.3.6.1.4.1.2500.3003.2 octetstringascii "Backup Not Running" \
.1.3.6.1.4.1.2500.3003.3 octetstringascii "Call the DBA Now for Help"The way you send a trap in Perl is a little more involved, but it's still easy to do:
#!/usr/local/bin/perl # Filename: /opt/local/perl_scripts/snmptrap.pl use SNMP_util "0.54"; # This will load the BER and SNMP_Session snmptrap("public\@nms:162", ".1.3.6.1.4.1.2789", "sunserver1", 6, 1247, ".1.3.6.1.4.1.2789.1247.1", ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.