Unable to create more than 1024 Threads in OpenShift 4

Solution Verified - Updated -

Issue

  • How to change the value of pids_limit in OpenShift 4?
  • How to configure podPidsLimit using KubeletConfig in OpenShift 4?
  • What is the default value of podPidsLimit in OpenShift 4?

  • Getting one of the following exceptions in applications when migrating from OCP3 to OCP4:

    java.lang.OutOfMemoryError: unable to create new native thread
java.lang.OutOfMemoryError: unable to create native thread: possibly out of memory or process/resource limits reached

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4
  • Kubelet
  • podPidsLimit

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