lambda-ebs-snapshots's Introduction

Lambda EBS Snapshot Manager

A simple Lambda script to schedule creation and clearing of EBS snapshots.

This function can create and manage many volumes and snapshots.
To tag an EBS volume for backup, add a tag key "Backup" with the rate in which to snapshot.
Optionally, add the key "Retention" with the number of days to override the default amount in the function.
Old snapshots are automatically purged once the "DeleteAfter" timestamp has passed.
Snapshots will try to inherit the EBS volume tagged Name, but will always at least indicate the source EBS volume ID and time of snapshot in the snapshot name and decription.

Valid values for "Backup" key: true, daily, 1/day, 2/day, 4/day, 6/day, 8/day, 12/day, 24/day, hourly

Lambda config:

Runtime: Python 2.7
Handler: lambda_function.lambda_handler
Role: [role as specified below]
Memory: 128
Timeout: 5 sec
Add a trigger using "CloudWatch Events - Schedule", set for "rate(1 hour)"

IAM Lambda Role:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "logs:*"
            ],
            "Resource": "arn:aws:logs:*:*:*"
        },
        {
            "Effect": "Allow",
            "Action": [
                "ec2:DescribeVolumes",
                "ec2:DescribeSnapshots",
                "ec2:CreateSnapshot",
                "ec2:DeleteSnapshot",
                "ec2:CreateTags",
                "ec2:ModifySnapshotAttribute",
                "ec2:ResetSnapshotAttribute"
            ],
            "Resource": [
                "*"
            ]
        }
    ]
}

This project is a fork of powerupcloud/EBSSnapshotsLambda, but I believe the initial work was done by serverlesscode.com.

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