Docker containers won't start

Solution Verified - Updated -

Issue

  • Docker command begins to hang until timeout
  • Docker is hitting pid max after we raised the value in /etc/tuned/openshift-node/tuned.conf
  • Logs show error:
level=error msg="Error running exec in container: rpc error: code = 2 desc = oci runtime error: exec failed: container_linux.go:247: starting container process caused \"process_linux.go:75: starting setns process  caused \\\"fork/exec /proc/self/exe: cannot allocate memory\\\"\"\n"

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Open Shift Container Platform 3.11
  • Red Hat Enterprise Linux Atomic Host
  • tuned-2.9.0-1.el7fdp.noarch
  • docker

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