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ArgoCD Ephemeral

The ephemeral app in ArgoCD can be created by following this document. The examples below show how to create an ephemeral app using the service and config repo pull requests in FRED. Please note that there is a delay between the completion of the service GitHub Action workflow and the creation of the ephemeral app in ArgoCD.

Create an ephemeral app with default configurations (no overrides)

This is very straghtforward, all you need to do is to add an ephemeral label in the service PR.

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Creating an ephemeral app with configurations overridden

To override configurations, a branch with the same name as the service branch must be created in the FRED config repository. Example: If the service branch is named 

feature/CALLST-1127/fred_ephemeral
then a branch with the same name, containing the overridden configuration properties, must also be created in the config repository.

In the FRED service pull request, ensure that the following labels are added:

  • ephemeral
  • ephemeral-override-target-revision

Once the ephemeral app is created in ArgoCD, any updates made to the branch configurations in the FRED config repository will automatically trigger an ArgoCD auto-sync to apply the changes.

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Delete ArgoCD ephemeral app

The ArgoCD ephemeral app is not automatically deleted after the pull request is merged or closed. You can easily remove it manually through the ArgoCD UI.