Perl OnTAP SDK: Realtime NFS Latency

Since most of my Virtual Infrastructure runs on NFS datastores I like to keep a very close eye on what’s going on inside the NetApp. I generally use Cacti for long term monitoring of the status of the datastores and the NetApp as a whole.

However, when I want to see what’s going on in less than five minute increments, Cacti is pretty much useless. I wrote this script a while ago so that if I feel that latency is becoming a problem, I can check it right away and see it in frequent intervals.

Most often I use this script when Nagios starts to chirp at me. I use a slightly modified version of this script with Nagios and have it alert when latency gets out of hand. I then use this script to get a good look at what’s going on.

The OnTAP SDK is almost as entertaining to work with as VMware’s…

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