RHV: Hosts unresponsive, SPM bouncing, Unrecognized protocol: 'SUBSCRI'

Solution Verified - Updated -

Issue

  • Hosts becoming unresponsive frequently
  • SPM role going from host to host every few minutes
  • Forcibly selecting SPM does not work as the role bounces to other hosts many times until settling

Environment

  • Red Hat Virtualization 3.6
    • rhevm-3.6.9.2-0.1.el6.noarch
    • vdsm-jsonrpc-java-1.1.12-1.el6ev.noarch
  • Red Hat Enterprise Linux 6.8 Hosts
    • vdsm-4.16.38-1.el6ev.x86_64
    • vdsm-yajsonrpc-4.16.38-1.el6ev.noarch
    • Cluster Level at 3.5

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