How to check memory utilization of a Container?

Solution Verified - Updated -

Issue

  • How to check memory utilization of a Container?
  • We have memory limits set to 512MiB, however container shows more memory available in free command output.
# oc describe po rhel7-sl365
Containers:
...
    Limits:
      cpu:      8
      memory:   8G
    Requests:
      cpu:      2
      memory:   8G

$ oc exec rhel7-sl365 free 
              total        used        free      shared  buff/cache   available
Mem:       32931180     5842580    22874396       38092     4214204    26486720
Swap:             0

Environment

  • Openshift Container Platform 3
  • Red Hat Enterprise Linux (RHEL) 7
  • RHEL Atomic

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