Why gluster fuse process leaking memory in RHGS 3.2 ?

Solution Verified - Updated -

Issue

  • The fuse mount process associated with application pod consuming high memory

    root      12345  1.0 66.0 33264452 32537724 ?   Ssl  Jul08 218:58 /usr/sbin/glusterfs --log-level=ERROR --log-file=/var/lib/origin/openshift.local.volumes/plugins/kubernetes.io/glusterfs/pvc-11112222-3333-4444-5555-6666777788888/mnt-9999-glusterfs.log --fuse-mountopts=auto_unmount --volfile-server=10.0.0.1 --volfile-server=10.0.0.10 --volfile-server=10.0.0.11 --volfile-server=10.0.0.12 --volfile-id=vol_aaaabbbbccccddddeeeefffff --fuse-mountopts=auto_unmount /var/lib/origin/openshift.local.volumes/pods/1111aaaa-2222-bbbb-3333cccc4444dddd/volumes/kubernetes.io~glusterfs/pvc-11112222-3333-4444-5555-6666777788888
    
  • The glusterfs process consume large amounts of the memory causing memory pressure on Openshift node hosting application pod.

Environment

  • Red Hat Enterprise Linux 7.6
  • Red Hat Gluster Storage 3.2
  • Openshift Container Storage 3.11

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