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[doc][misc] add note for Kubernetes users (#5916)

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youkaichao 2024-06-27 10:07:07 -07:00 committed by GitHub
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docs/source/serving/env_vars.rst
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@ -6,6 +6,8 @@ vLLM uses the following environment variables to configure the system:
.. warning::
Please note that ``VLLM_PORT`` and ``VLLM_HOST_IP`` set the port and ip for vLLM's **internal usage**. It is not the port and ip for the API server. If you use ``--host $VLLM_HOST_IP`` and ``--port $VLLM_PORT`` to start the API server, it will not work.
All environment variables used by vLLM are prefixed with ``VLLM_``. **Special care should be taken for Kubernetes users**: please do not name the service as ``vllm``, otherwise environment variables set by Kubernetes might conflict with vLLM's environment variables, because `Kubernetes sets environment variables for each service with the capitalized service name as the prefix <https://kubernetes.io/docs/concepts/services-networking/service/#environment-variables>`_.
.. literalinclude:: ../../../vllm/envs.py
:language: python
:start-after: begin-env-vars-definition