About This Script
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ec2-manage-snapshots is a php command line script that removes Amazon EBS snapshots older than one week for a given volume. While pruning, the script keeps one backup from every Sunday for the previous four weeks, and backups from the first of everymonth previous.

This script is a rewrite from http://www.thecloudsaga.com/aws-ec2-manage-snapshots/, but with improvements.

What's New
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    * A complete rewrite using Zend Framework and object oriented design
    * Accounts for more than one backup a day
    * Uses Amazon's newest API provided in Zend Framework
    * Addresses snapshots which are in use by AMI images
    * Access key and secret key can now be included as command line arguments
    * Configuration parameters have been moved outside of the script
    * Added validation for amazon regions with graceful exit when an incorrect region is supplied
    * Added a quiet mode to suppress output

Getting Started
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Upon downloading the application, a config.ini file must be created under the project's "etc" directory. You can copy the included config.ini-dist.

Basic Usage
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ec2-prune-snapshots command line options

Usage: ec2-prune-snapshots.php [ options ]
--volume|-v <string>     EC2 Volume ID to prune
--region|-r <string>     EC2 region
--dry-run|-d             Will not perform any actions, but will output what would otherwise have been completed
--access-key|-a <string> AWS access key. If not provided the value will be taken from the ../etc/config.ini file
--secret-key|-s <string> AWS secret key. If not provided the value will be taken from the ../etc/config.ini file
--verbose|-t             Display progress to stdout
--help|-h                Show this help screen
--quiet|-q               Supress output which is not error related

Configuration File
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Some defaults can be set in the application's config.ini file. The following may be supplied.

ec2.default_access_key = ""
ec2.default_secret_access_key = ""
ec2.default_region = ""