aws_dlm_lifecycle_policy: support other time intervals

[djmetzle]

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Description

The aws_dlm_lifecycle_policy resource only supports the HOURS interval specficiation.

https://github.com/terraform-providers/terraform-provider-aws/blob/11301c1356f6e76b07e895c0b41a326a0fabc080/aws/resource_aws_dlm_lifecycle_policy.go#L75-L82

See the docs here:
https://github.com/terraform-providers/terraform-provider-aws/blob/1d896f5b6e3ec9cbb8aedeb947b8cec275e3f25f/website/docs/r/dlm_lifecycle_policy.markdown#create-rule-arguments

It mentions:

interval_unit - (Optional) The unit for how often the lifecycle policy should be evaluated. HOURS is currently the only allowed value and also the default value.

The go sdk does support other intervals though:

https://github.com/aws/aws-sdk-go/blob/fde575c64841b291899bc112dfcdc206f609a305/service/dlm/api.go#L2505-L2517

Along with the only currently allowed value:
https://github.com/aws/aws-sdk-go/blob/fde575c64841b291899bc112dfcdc206f609a305/service/dlm/api.go#L2465-L2468

---

It would be useful to fully use the capabilities of DLM from this Terrafrom module.

Unfortunately, the AWS docs do not mention the other schedule intervals, so perhaps i'm misreading here:
https://docs.aws.amazon.com/dlm/latest/APIReference/API_CreateRule.html#dlm-Type-CreateRule-IntervalUnit

New or Affected Resource(s)

• aws_dlm_lifecycle_policy

[anGie44]

Hi @djmetzle, thank you for raising this feature request. At this time, it seems the creation rule via the create_rule configuration block still only supports the HOURS intervalUnit but the retain rule on the other hand does support additional interval Units as you've referenced in the API specs (also available here: https://docs.aws.amazon.com/dlm/latest/APIReference/API_RetainRule.html) . the aws_dlm_lifecycle_policy resource does not currently have configurable interval and interval_unit values , so if that is still along the lines of this request, we can definitely support those changes via #11503.

[denzhel]

Any update on this ?

We really want to use this resource to create a DLM with 3 different policies:

• Daily
• Weekly
• Monthly

The limitation of hours and maximum of 24 is VERY limiting and forces us to use scripts or other hacks.

Will you improve the usability any time soon ? @anGie44 @djmetzle

[danielbeardsley]

At this time, it seems the creation rule via the create_rule configuration block still only supports the HOURS intervalUnit

True, but it looks like AWS now supports arbitrary schedules via the CronExpression rule:
https://docs.aws.amazon.com/dlm/latest/APIReference/API_CreateRule.html

See issue #13627

[github-actions]

This functionality has been released in v4.9.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

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[github-actions]

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