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nixos/github-runners: restart service if exit code signals a retryable error

On some occasions, the GitHub runner service encounters errors which are
deemed retryable but result in the runner's termination. To signal a
retryable error, the runner exits with status code 2:

https://github.com/actions/runner/blob/40ed7f8/src/Runner.Common/Constants.cs#L146

To account for that behavior, this commit sets
`RestartForceExitStatus=2` which results in a service restart regardless
of using an ephemeral runner or not.

Vincent Haupert 84777447 4f9fa917

options
unified split
Changed files
+3
nixos
modules
services
continuous-integration
github-runner
service.nix
+3
nixos/modules/services/continuous-integration/github-runner/service.nix 
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    # If running in ephemeral mode, restart the service on-exit (i.e., successful de-registration of the runner)


     

       
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    # to trigger a fresh registration.


     

       
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    Restart = if cfg.ephemeral then "on-success" else "no";


     

       

       
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    # If the runner exits with `ReturnCode.RetryableError = 2`, always restart the service:


     

       

       
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    # https://github.com/actions/runner/blob/40ed7f8/src/Runner.Common/Constants.cs#L146


     

       

       
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    RestartForceExitStatus = [ 2 ];


     

       
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    # Contains _diag


     

       
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    LogsDirectory = [ systemdDir ];