Chef::Knife plugin to dig out non-matching output from a command across hosts
Ruby
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README.md
canon.rb

README.md

Canon

Compare the output from a group of hosts to a canonical good expected return.

Preface

Check the expected output of a command across N hosts and compare to what you think it should be.

What it does

knife canon -C "good stuff" QUERY COMMAND

example:

knife canon -C "rsync-3.0.6-1.el5.rf" fqdn:example.com "rpm -q rsync"

myhost1.example.com failed to match expected output: rsync-3.0.5

myhost2.example.com failed to match expected output: rsync-3.0.4

Surpresses output from hosts that match. Useful when plotting convergence paths.

This is a mess, yo

I'm getting better at the ruby.

I'll work on getting the output red for non-matching hosts.