####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!
===================================
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!
===================================
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
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