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Support "plan" mode deployment #4029

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jonnyry opened this issue Jul 15, 2024 · 5 comments · May be fixed by #4047
Open

Support "plan" mode deployment #4029

jonnyry opened this issue Jul 15, 2024 · 5 comments · May be fixed by #4047
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@jonnyry
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jonnyry commented Jul 15, 2024 •
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Support "plan" mode deployments so that you can evaluate the terraform plan before deciding to apply it.

Upgrading a TRE between versions may change a large number of Azure resources which introduces risk to a running TRE. Being able to evaluate the terraform plan before applying would reduce the risk of issues occuring during an upgrade, and the downtime required for an upgrade.

Ideally this would be a new build variable, e.g.

image

Also: a similar mode when upgrading components within the TRE.
@jonnyry jonnyry mentioned this issue Jul 15, 2024
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@jonnyry jonnyry changed the title Support a "plan" mode deployment Support "plan" mode deployment Jul 15, 2024
@tim-allen-ck
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this would be great.

marrobi added a commit that referenced this issue Jul 31, 2024
@marrobi
Support plan mode deployment
e226c0d 
Related to #4029

Add support for 'plan' mode deployments to evaluate the terraform plan before applying it.

* **devops/scripts/terraform_wrapper.sh**
  - Add a check for the `DEPLOY_MODE` variable.
  - Execute `terraform plan` without applying if `DEPLOY_MODE` is set to 'plan'.
  - Log the plan output to a file.

* **docs/tre-admins/setup-instructions/manual-deployment.md**
  - Add instructions on using the `DEPLOY_MODE` variable for 'plan' mode deployments.
  - Include examples of setting the `DEPLOY_MODE` variable to 'plan' and 'apply'.

* **.github/workflows/deploy_tre.yml**
  - Add an input for `DEPLOY_MODE` in the workflow.
  - Pass the `DEPLOY_MODE` input to the deployment script.

* **docs/tre-admins/setup-instructions/workflows.md**
  - Add instructions on using the `DEPLOY_MODE` variable for 'plan' mode deployments via the GitHub UI.
  - Include examples of setting the `DEPLOY_MODE` variable to 'plan' and 'apply'.

---

For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/microsoft/AzureTRE/issues/4029?shareId=XXXX-XXXX-XXXX-XXXX).
@marrobi marrobi linked a pull request Jul 31, 2024 that will close this issue
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marrobi commented Jul 31, 2024

@jonnyry been playing with GitHub Workspaces to fix issues. Created a PR, but haven't tested it. Let me know thoughts and if can find time to test, would be great.

@jonnyry
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jonnyry commented Aug 1, 2024

@marrobi ah fantastic - thank you very much :-) just returned from holiday but will test it out soon.

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jonnyry commented Oct 30, 2024

Sorry for taking so long to look at this...

Tested for a local make deploy-core and seems to work nicely. There was one small thing I needed to fix - this file has lost its execute permission bit: [devops/scripts/terraform_wrapper.sh] 100755 > 100644.

For a make deploy-core its pretty useful to evaluate the deployment of the TRE core before proceeding to apply.

However in the full make all / CICD build context I think its likely to cause issues - since it would only be terraform that would be prevented from running, and other build items such as container builds and the UI build would be applied, your TRE would be left at an inconsistent version.

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marrobi commented Nov 6, 2024

@jonnyry is this an issue as the new versions of the API and UI would only be deployed once the versions have been incremented by terraform apply?

I know of some people who have the image builds in separate pipelines to the main Terraform deployment.

Do you think any issues might be caused by and/or is it useful merging it as is?

@marrobi marrobi linked a pull request Nov 6, 2024 that will close this issue
Support plan mode deployment #4047
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Support plan mode deployment microsoft/AzureTRE
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@jonnyry @marrobi @tim-allen-ck