EC2 Snapshot Management

• Introduction
• Installation
• Configuration
• Example
• Command Line Parameters

Introduction

AWS EC2 Snapshot Management is a php script which prunes EC2 snapshots as if they were backups. It's meant to be run from the command line, but can be called by other PHP scripts if you so desire. As well as cleaning up snapshots it can also be used to take new snapshots as well.

The cleanup function will keep snapshots made:

• Daily: In the last seven days.
• Weekly: One per week in the last month.
• Monthly: One per month.

It will always keep at least one snapshot even if it was made a year ago.

This script took inspiration from 'EC2 Manage Snapshots' made by Erik Dasque and previously Oren Solomianik. It however requires the AWS PHP SDK.

This script is provided under the MIT License.

Installation

The recommended way to install EC2 Snapshot Management is through Composer.

# Install Composer
curl -sS https://getcomposer.org/installer | php

Next, run the Composer command to install the latest stable version of EC2 Snapshot Management:

composer require jdelaune/aws-ec2-snapshot-management

After installing, you need to require Composer's autoloader:

require 'vendor/autoload.php';

Configuration

EC2 Snapshot Management uses the AWS PHP SDK. You will needed to setup your credentials by following the instructions given here:

http://docs.aws.amazon.com/aws-sdk-php/guide/latest/credentials.html#credential-profiles

It expects a profile called ec2snapshot.

Example

You will need to create a sample script like the one below:

<?php
// myScript.php

require 'vendor/autoload.php';

use EC2SnapshotManagement\Manager;

/**
 * Create a new EC2 Snapshot Manager
 *
 * You don't need to supply any arguments if calling from the command line.
 *
 * @param string    $volume         EC2 Volume Identifier (optional).
 * @param string    $region         EC2 Region Identifier (optional).
 * @param boolean   $quiet          Quiet mode, no output (optional).
 * @param boolean   $noOperation    No operation mode, nothing will get deleted (optional).
 * @param boolean   $verbose        Verbose, tells you exactly what it's doing (optional).
 * @param string    $description    Description of new snapshot if creating one (optional).
 */
$manager = new Manager('vol-abcdefgh', 'eu-west-1', false, true, true, 'My Data Backup');

/**
 * Cleans up existing old snapshots
 */
$manager->cleanupSnapshots();

/**
 * Take a new snapshot
 */
$manager->takeSnapshot();

Or you can call the script you just created from the command line instead of passing parameters to the class constructor:

php myScript.php -v="vol-abcdefgh" -r="eu-west-1" -d="My Server Backup" -n -o

You will probably want to create two scripts to call each function independently!

Command line parameters

Parameter	Value
-v=	EC2 volume identifier (Required).
-r=	EC2 region (Optional). Defaults to us-east-1. us-east-1 - US East (N. Virginia) us-west-1 - US West (N. California) us-west-2 - US West (Oregon) eu-west-1 - EU (Ireland) eu-central-1 - EU (Frankfurt) ap-southeast-1 - Asia Pacific (Singapore) ap-southeast-2 - Asia Pacific (Sydney) ap-northeast-1 - Asia Pacific (Tokyo) sa-east-1 - South America (Sao Paulo)
-d=	Description, used when creating a snapshot (Optional).
-o	Verbose mode. Tells you what it's doing (Optional).
-q	Quiet mode. No output (Optional).
-n	No operation mode. It won't actually delete or create any snapshots. Useful along with verbose mode to see what it will do the first time you run it (Optional).