UBA unauthorized during scheduled Horde build

Development Pipeline & Plugins
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1

Hi, I noticed that my Horde builds that are triggered by the scheduler are unable to use UBA with an unauthorized error (see below). When I trigger a build manually it works as expected. Are there any ACL that need to be set for the scheduler and if so what claim should I use?

Thank you!

`Unable to get worker: EpicGames.Horde.Compute.ComputeClientException: User does not have AddComputeTasks permission for cluster default (HTTP status Forbidden)

at EpicGames.Horde.Compute.Clients.ServerComputeClient.ConnectAsync(Nullable`1 clusterId, Requirements requirements, String requestId, ConnectionMetadataRequest connection, ILogger workerLogger, CancellationToken cancellationToken)+MoveNext() in E:\sandbox<redacted>\Sync\Engine\Source\Programs\Shared\EpicGames.Horde\Compute\Clients\ServerComputeClient.cs:line 321

at EpicGames.Horde.Compute.Clients.ServerComputeClient.ConnectAsync(Nullable`1 clusterId, Requirements requirements, String requestId, ConnectionMetadataRequest connection, ILogger workerLogger, CancellationToken cancellationToken)+System.Threading.Tasks.Sources.IValueTaskSource<System.Boolean>.GetResult()

at EpicGames.Horde.Compute.Clients.ServerComputeClient.TryAssignWorkerAsync(Nullable`1 clusterId, Requirements requirements, String requestId, ConnectionMetadataRequest connection, ILogger logger, CancellationToken cancellationToken) in E:\sandbox<redacted>\Sync\Engine\Source\Programs\Shared\EpicGames.Horde\Compute\Clients\ServerComputeClient.cs:line 249

at UnrealBuildTool.UBAHordeSession.AddWorkerAsync(Requirements requirements, UnrealBuildAcceleratorHordeConfig hordeConfig, CancellationToken cancellationToken, Int32 activeCores) in E:\sandbox<redacted>\Sync\Engine\Source\Programs\UnrealBuildTool\Executors\UnrealBuildAccelerator\UBAAgentCoordinatorHorde.cs:line 283

at UnrealBuildTool.UBAHordeSession.AddWorkerAsync(Requirements requirements, UnrealBuildAcceleratorHordeConfig hordeConfig, CancellationToken cancellationToken, Int32 activeCores) in E:\sandbox<redacted>\Sync\Engine\Source\Programs\UnrealBuildTool\Executors\UnrealBuildAccelerator\UBAAgentCoordinatorHorde.cs:line 376

at UnrealBuildTool.UBAAgentCoordinatorHorde.<>c__DisplayClass7_0.<b__0>d.MoveNext() in E:\sandbox<redacted>\Sync\Engine\Source\Programs\UnrealBuildTool\Executors\UnrealBuildAccelerator\UBAAgentCoordinatorHorde.cs:line 894`

2

Hi there,

Can you please describe a bit more how your Horde authentication is configured? For posterity, there is documentation on Authentication debugging here - what’s most important is a scheduler sourced job will mint tokens for Agents.

You may also need to add:

"clusters": [ { "id": "default", // or whatever the cluster you've defined, here "acl": { "entries": [ { "claim": { "type": "http://epicgames.com/ue/horde/role", "value": "agent" }, "actions": [ "AddComputeTasks" ] },

Julian

3

I’m using horde authentication for now, adding the claim for agent did resolve my issue thank you! Appreciate the link to the troubleshooting article as well, hadn’t found that one before.