AWS Take block volume snapshots at regular intervals

Now using Data Lifecycle manager you can take block volume snapshots at regular intervals without the need of custom scripts and lambda functions.

Under block volumes -> Life Cycle Manager --> Create Policy

Give a policy Name
You can choose either instance level snapshots (which includes all the EBS volumes attached to the instance) or individual block level volumes.

Pick a schedule:
You can  pick a window anywhere between 2hrs and 12hrs 

Retention:
How many snapshots you want to retain, AFAIK limit is 1000 snapshots and it will overwrite the oldest snapshot.

Tags:
Pick any tags that you want to have for the snapshots.

IAM Role:

Pick a role or create a new role with the below policy:

{
  "Version": "2018-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "ec2:CreateSnapshot",
        "ec2:DeleteSnapshot",
        "ec2:DescribeVolumes",
        "ec2:DescribeSnapshots"
      ],
      "Resource": "*"
    },
    {
      "Effect": "Allow",
      "Action": [
        "ec2:CreateTags"
      ],
      "Resource": "arn:aws:ec2:*::snapshot/*"
    }
  ]
}


Enable the policy