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Pipeline Worker Node Name Undefined When Using __cribl_worker Field

  • March 6, 2026
  • 4 replies
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Hi All. I am creating a pipeline at worker group level (I have 2 worker nodes in the group) , in which I want to amend worker node name in _raw file. I tried using __cribl_worker field but I am getting value as undefined. Can someone help in getting the worker node name to amend to my _raw field

Best answer by Stefan Laschitzki

You get the hostname if the host that is executing that statement. The preview in the Leader UI will be executed by the Leader. Once you deploy this to the worker nodes, you'll get the workers hostname. You can verify that by teleporting and running the command there

4 replies

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Have you tried this one? https://docs.cribl.io/stream/expressions-other#coshostname
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Thanks Stefen. I have tried using this property "C.os.hostname()" but I am getting Leader node name not the worker name
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You get the hostname if the host that is executing that statement. The preview in the Leader UI will be executed by the Leader. Once you deploy this to the worker nodes, you'll get the workers hostname. You can verify that by teleporting and running the command there
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It works like charm thanks a lot
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