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vpack/autoscale.md

Last active August 29, 2015 14:15
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Auto scale and get me the private IPs
Raw
autoscale.md

Its easy to login to the AWS console to spin up an instance to test your app. But it gets frustrating when you have do this over and over developing/testing automation scripts (Chef recipes or Shell scripts).

I wrote this simple script using AWS CLI to kill the current instance and spin up a new instance. Once i have the IP,I login via SSH to verify the results.

  • kill: > autoscale.sh 0
  • Spin a new instance: > autoscale.sh 1
    • You can run this a few times until an IP is assigned to the new instance.
Raw
autoscale.sh
set -x
AS=wiki-tst
PROFILE="--profile lab --region us-east-1"
O="--output text "
aws $PROFILE autoscaling set-desired-capacity --auto-scaling-group-name "$AS" --desired-capacity $1
aws $PROFILE autoscaling describe-auto-scaling-groups $O | grep ^INSTANCES | grep wiki-tst
INSTANCE=$(
aws $PROFILE autoscaling describe-auto-scaling-groups $O | grep ^INSTANCES | grep $AS | cut -f4)
aws $PROFILE ec2 describe-instances --instance-id $INSTANCE $O | grep PRIVATEIPADDRESSES
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