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.
On Sunday, September 13th, 2015 during the wee hours of the morning a change was made by AS7122 which silenced four Manitoban ASNs, and removed several other routes from the global routing table. Shortly after the start of their 1AM maintenance window AS7122 enabled BGP atomic aggregate on 205.200.0.0/16 and 207.161.0.0/16, causing AS21876, AS23001, AS32433, and AS54937 to disappear from the global routing table.
I recently went thru the process of upgrading most of my virtual machines from Debian Wheezy to Debian Jessie. One of the changes that affected quite a few things was the upgrade from Apache 2.2 to 2.4. One of the packages that is affected by this change is smokeping.
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.
