/terraform-aws-ec2-ami-backup

Terraform module for automatic & scheduled AMI creation

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This repo contains a terraform module that creates two lambda functions that will create AMI automatically at regular intervals. It is based on the code at https://serverlesscode.com/post/lambda-schedule-ebs-snapshot-backups/ and https://serverlesscode.com/post/lambda-schedule-ebs-snapshot-backups-2/.

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Usage

Include this repository as a module in your existing terraform code:

module "lambda_ami_backup" {
  source = "git::https://github.com/cloudposse/terraform-aws-ec2-ami-backup.git?ref=tags/0.3.2"

  name           = "${var.name}"
  stage          = "${var.stage}"
  namespace      = "${var.namespace}"
  region         = "${var.region}"
  ami_owner      = "${var.ami_owner}"
  instance_id    = "${var.instance_id}"
  retention_days = "14"
}

Important

In Cloud Posse's examples, we avoid pinning modules to specific versions to prevent discrepancies between the documentation and the latest released versions. However, for your own projects, we strongly advise pinning each module to the exact version you're using. This practice ensures the stability of your infrastructure. Additionally, we recommend implementing a systematic approach for updating versions to avoid unexpected changes.

Examples

Example on excluding some of attached EBS volumes:

module "lambda_ami_backup" {
  source = "git::https://github.com/cloudposse/terraform-aws-ec2-ami-backup.git?ref=tags/0.3.2"

  name           = "${var.name}"
  stage          = "${var.stage}"
  namespace      = "${var.namespace}"
  region         = "${var.region}"
  ami_owner      = "${var.ami_owner}"
  instance_id    = "${var.instance_id}"
  retention_days = "14"

  block_device_mappings = [
    { "DeviceName" = "/dev/xvdf", "NoDevice" = "" },
    { "DeviceName" = "/dev/xvdg", "NoDevice" = "" },
  ]
}

Makefile Targets

Available targets:

  help                                Help screen
  help/all                            Display help for all targets
  help/short                          This help short screen
  lint                                Lint terraform code

Requirements

No requirements.

Providers

Name Version
archive n/a
aws n/a
null n/a

Modules

Name Source Version
label git::https://github.com/cloudposse/terraform-null-label.git tags/0.3.7
label_backup git::https://github.com/cloudposse/terraform-null-label.git tags/0.3.7
label_cleanup git::https://github.com/cloudposse/terraform-null-label.git tags/0.3.7
label_role git::https://github.com/cloudposse/terraform-null-label.git tags/0.3.7

Resources

Name Type
aws_cloudwatch_event_rule.ami_backup resource
aws_cloudwatch_event_rule.ami_cleanup resource
aws_cloudwatch_event_target.ami_backup resource
aws_cloudwatch_event_target.ami_cleanup resource
aws_iam_role.ami_backup resource
aws_iam_role_policy.ami_backup resource
aws_lambda_function.ami_backup resource
aws_lambda_function.ami_cleanup resource
aws_lambda_permission.ami_backup resource
aws_lambda_permission.ami_cleanup resource
null_resource.schedule resource
archive_file.ami_backup data source
archive_file.ami_cleanup data source
aws_iam_policy_document.ami_backup data source
aws_iam_policy_document.default data source

Inputs

Name Description Type Default Required
ami_owner AWS Account ID which is used as a filter for AMI list (e.g. 123456789012) string "" no
backup_schedule The scheduling expression. (e.g. cron(0 20 * * ? *) or rate(5 minutes) string "cron(00 19 * * ? *)" no
block_device_mappings List of block device mappings to be included/excluded from created AMIs. With default value of [], AMIs will include all attached EBS volumes list(string) [] no
cleanup_schedule The scheduling expression. (e.g. cron(0 20 * * ? *) or rate(5 minutes) string "cron(05 19 * * ? *)" no
instance_id AWS Instance ID which is used for creating the AMI image (e.g. id-123456789012) any n/a yes
name Name (e.g. bastion or db) string "" no
namespace Namespace (e.g. cp or cloudposse) string "" no
reboot Reboot the machine as part of the snapshot process string "false" no
region AWS Region where module should operate (e.g. us-east-1) string "" no
retention_days Is the number of days you want to keep the backups for (e.g. 14) string "14" no
stage Stage (e.g. prod, dev, staging) string "" no

Outputs

No outputs.

Related Projects

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References

For additional context, refer to some of these links.

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This project is under active development, and we encourage contributions from our community.

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For πŸ› bug reports & feature requests, please use the issue tracker.

In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.

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  2. Fork the repo on GitHub
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License

License: MIT

The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy
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in the Software without restriction, including without limitation the rights
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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THE SOFTWARE.

Source: <https://opensource.org/licenses/MIT>

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