aws-ec2-ebs-automatic-snapshot-bash

Bash script for Automatic EBS Snapshots and Cleanup on Amazon Web Services (AWS)

Written by [AWS Consultants - Casey Labs Inc.] (http://www.caseylabs.com)

Contact us for all your Amazon Web Services consulting needs!

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How it works: ebs-snapshot.sh will:

• Determine the instance ID of the EC2 server on which the script runs
• Gather a list of all volume IDs attached to that instance
• Take a snapshot of each attached volume
• The script will then delete all associated snapshots taken by the script that are older than 7 days

Pull requests greatly welcomed!

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REQUIREMENTS

IAM User: This script requires that new IAM user credentials be created, with the following IAM security policy attached:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "Stmt1426256275000",
            "Effect": "Allow",
            "Action": [
                "ec2:CreateSnapshot",
                "ec2:CreateTags",
                "ec2:DeleteSnapshot",
                "ec2:DescribeSnapshots",
                "ec2:DescribeVolumes"
            ],
            "Resource": [
                "*"
            ]
        }
    ]
}

AWS CLI: This script requires the AWS CLI tools to be installed.

First, make sure Python pip is installed:

# Ubuntu
sudo apt-get install python-pip -y

# Red Hat/CentOS
sudo yum install python-pip -y

Then install the AWS CLI tools:

sudo pip install awscli

Once the AWS CLI has been installed, you'll need to configure it with the credentials of the IAM user created above:

sudo aws configure

AWS Access Key ID: (Enter in the IAM credentials generated above.)
AWS Secret Access Key: (Enter in the IAM credentials generated above.)
Default region name: (The region that this instance is in: i.e. us-east-1, eu-west-1, etc.)
Default output format: (Enter "text".)```

Install Script: Download the latest version of the snapshot script and make it executable:

cd ~
wget https://raw.githubusercontent.com/CaseyLabs/aws-ec2-ebs-automatic-snapshot-bash/master/ebs-snapshot.sh
chmod +x ebs-snapshot.sh
mkdir -p /opt/aws
sudo mv ebs-snapshot.sh /opt/aws/

You should then setup a cron job in order to schedule a nightly backup. Example crontab jobs:

55 22 * * * root  AWS_CONFIG_FILE="/root/.aws/config" /opt/aws/ebs-snapshot.sh

# Or written another way:
AWS_CONFIG_FILE="/root/.aws/config" 
55 22 * * * root  /opt/aws/ebs-snapshot.sh

To manually test the script:

sudo /opt/aws/ebs-snapshot.sh