DREBS (Disaster Recovery for Elastic Block Store)

About

• DREBS is a tool for taking periodic snapshots of EBS volumes.
• DREBS is designed to be run on the EC2 host which the EBS volumes to be snapshoted are attached.
• DREBS supports configurable retention strategies.
• DREBS supports configurable pre and post snapshot tasks such as dumping databases prior to snapshot for consistency.

Installation & Setup

1. Clone the repo or install the gem
2. Currently configuration is located at the top of the drebs bin. Add you ec2 key, etc.
3. Add Crontab entry: 0 * * * * drebs

Issues

• State including config is cached in drebs_state.json. This file will need to be deleted to get drebs to pick up new config. Doing so will orphan current snapshots which will need to be deleted manually.

Todo

• Tests!
• Refactor using main with db for state and external config
• Use Whenever gem for crontab setup
• Arbitrary execution intervals (Snapshots every 5 minutes instead of every hour)