jensendw/asg-spincycle repository overview

⁠ASG Spincycle

Rotates instances in autoscaling groups that are using an outdated launch configuration

⁠Usage

The script assumes you have the below required environment variables set so boto3 can authenticate to AWS. You can read more about the boto3 auth requirements here⁠

• AWS_ACCESS_KEY_ID
• AWS_SECRET_ACCESS_KEY
• AWS_DEFAULT_REGION

pip install -r requirements.txt
python3 spincycle.py

The script takes the following command line arguments

usage: spincycle.py [-h] --asg-name ASG_NAME [--sleep-time SLEEP_TIME]

Rotate old instances from an ASG

optional arguments:
  -h, --help            show this help message and exit
  --asg-name ASG_NAME, -a ASG_NAME
                        The name of the ASG you want to rotate
  --sleep-time SLEEP_TIME, -s SLEEP_TIME
                        The time you want to wait between rotating instances

--sleep-time is technically not required and defaults to 600 seconds if not specified.

If you prefer to run the script via docker

docker run -it -e AWS_ACCESS_KEY_ID=xxx \
-e AWS_SECRET_ACCESS_KEY=yyy \
-e AWS_DEFULT_REGION=us-west-2 \
jensendw/asg-spincycle -a myawesomeasg -s 500

⁠Contributing

1. Fork it ( https://github.com/jensendw/asg-spincycle⁠ )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

⁠asg-spincycle