Script to mirror node name to ec2 Name

barnybug_2 · September 9, 2012, 7:25pm

I wrote this script for a bit of fun.

It sets ec2 instance Names to the name of the elasticsearch node running on
them.

gist.github.com

https://gist.github.com/barnybug/3686635

ec2names.py

#!/usr/bin/python

# Script to name all ec2 instances after the node name allocated to the
# elasticsearch running on that instance. This makes it easy to track back
# to the physical system from visualization tools like bigdesk and head.
#
# Run directly on any elasticsearch node or port forward 9200 to a node in the
# cluster. Simple run without arguments:
# ./ec2names.py
#

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It's come in very handy when debugging system level problems as it makes
nodes much more identifiable in the Amazon console.
Works great with ec2-ssh from instagram, eg to restart an elasticsearch
node by name:
$ ./ec2names.py
$ ec2-ssh Lucifer 'service elasticsearch restart'

B

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