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What Is Openshift's Downward API?

Answer»

The DOWNWARD API enables containers to access information about API objects without being bound to the OpenShift CONTAINER Platform. The pod's name, namespace, and resource values are examples of such information. Containers can use environment variables or a volume plug-in to consume data from the descending API.

You can get the following metadata and use it to configure the RUNNING pods:

  • Labels
  • Annotations
  • Name of the pod, namespace, and IP address
  • Limit information and pod CPU/memory request
  • Certain data can be mounted as an environment variable in the pod, while other data can be accessed as FILES within a volume.


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