How to set usage limits for ephemeral storage in OpenShift 4

Solution Verified - Updated -

Issue

  • The solution How to set quota for emptyDir volume usage on an Openshift Node? does not work in OpenShift 4. How can I protect my OpenShift 4 Compute Nodes from random writes to temporary container filesystems?
  • How can the amount of ephemeral storage be limited in a Pod?

  • Pods are evicted and the events show messages like:

    Pod ephemeral local storage usage exceeds the total limit of containers

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4
  • Ephemeral Storage

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