aws-snapshot-tool

aws-snapshot-tool is a python script to make it easy to roll snapshot of your EBS volumes.

Simply add a tag to each volume you want snapshots of, configure and install a cronjob for aws-snapshot-tool and you are off. It will even handle rolling snapshots on a hour, day, week and year so that you can setup the retention policy to suit.

Features:

• Python based: Leverages boto and is easy to configure and install as a crontab
• Simple tag system: Just add a tag to each of your EBS volumes you want snapshots of
• Configure retention policy: Configure how many hours, days, weeks, and month snapshots you want to retain
• SNS Notifications: aws-snapshot-tool works with Amazon SNS our of the box, so you can be notified of snapshots

Usage

1. Install and configure Python and Boto (See: https://github.com/boto/boto)

2. Create a SNS topic in AWS and copy the ARN into the config file

3. Subscribe with a email address to the SNS topic

4. Create a snapshot user in IAM and put the key and secret in the config file

5. Create a security policy for this user (see the iam.policy.sample)

6. Copy config.sample to config.py

7. Decide how many versions of the snapshots you want for hour/day/week/month and change this in config.py

8. Change the Region and Endpoint for AWS in the config.py file

9. Optionally specify a proxy if you need to, otherwise set it to '' in the config.py

10. Give every Volume for which you want snapshots a Tag with a Key and a Value and put these in the config file. Default: "MakeSnapshot" and the value "True"

11. Install the script in the cron:

    # chmod +x makesnapshots.py
    # crontab -e
    5 * * * * /opt/aws-snapshot-tool/makesnapshots.py hour
    30 1 * * 1-6 /opt/aws-snapshot-tool/makesnapshots.py day
    30 2 * * 0 /opt/aws-snapshot-tool/makesnapshots.py week
    30 3 1 * * /opt/aws-snapshot-tool/makesnapshots.py month
    

Additional Notes

The user that executes the script needs the following policies: see iam.policy.sample