RSS

Posts in 2016

  • HTML Email with Nagios

    Sunday, February 07, 2016 in Monitoring

    “But can you make the alerts look nicer?” I’ve always liked the simple, plain text, easily customized commands used for email and SMS alerting in Nagios. I recently set up SMS alerting using nagios-twilio and some custom alert …

    Read more

  • How I Use Nagios

    Thursday, January 21, 2016 in Monitoring

    I have been using Nagios extensively to monitor infrastructure that I am interested in for about 10 years now, and each time I build a net-new Nagios monitoring system I version the configuration. I am up to Generation 4 now which includes: Approx …

    Read more

Posts in 2015

  • Monitoring Onions

    Sunday, November 29, 2015 in Monitoring

    One of the first questions I had when Facebook launched their onion was “I wonder how stable it is?". Tonight with some help from torsocks I am now monitoring availability of several onions, and trending all Nagios perfdata outputs from …

    Read more

  • Nagios and IPv6

    Sunday, November 22, 2015 in Monitoring

    While I’ve had most of my services IPv6 enabled for quite a while, I have not set up monitoring of those services over IPv6 yet. This blog post is a summary of my experiences IPv6 enabling my nagios setup. Defining IPv4/v6 specific service …

    Read more

  • Nagios Logs, Handy One-Liner

    Saturday, September 05, 2015 in Monitoring

    Nagios is an amazing network monitoring tool, and its logs are a greppable goldmine of information. Most of us aren’t able to convert timestamps into local dates on the fly. GeekPeek offers the following one-liner which you can add into a pipe …

    Read more

Posts in 2014

  • SaltStack, CouchDB, and Nagios

    Sunday, December 21, 2014 in Monitoring

    This is a second blog post in a related series, the first is located here. Using SaltStack to run distributed monitoring checks is fun, but what is really awesome is writing the result of all those checks to CouchDB. Instead of returning the result …

    Read more

  • Observium November Release

    Tuesday, November 25, 2014 in Monitoring

    Right along time with its six-month release schedule, Observium 0.14.11 has been released. Upgrading, as always, is simple. Backup your installation, and then unpack the new files over the old ones. cd /opt cp -r observium observium.bak wget …

    Read more

  • Service Status via SaltStack 2014.7 with Nagios

    Friday, November 21, 2014 in Monitoring

    One of the most exciting new features to me in SaltStack 2014.7 is the nagios module. This module supports remote execution of nagios-plugins on your minions. It can also execute pre-defined lists of checks and targets defined (and targeted) in a …

    Read more

  • Observium 0.14.4

    Sunday, April 06, 2014 in Monitoring

    I just noticed that Observium released a new Community Edition release (0.14.4) on April 1. The changes (and additions!!!) mentioned in the CHANGELOG are numerous, and include several security fixes – including for an SQL injection so it is …

    Read more

  • UPS SNMP Management

    Monday, January 13, 2014 in Monitoring

    Having put an IP address on the management card of a APC Symmetra RM 12000 recently, I set out to setting up Nagios to monitor it today. I found a plugin called check_apc.pl which seemed to work fairly well. It was also quite nicely supported in …

    Read more