[Ceph] host hostXX (x.x.x.x) failed check: Can't communicate with remote host `x.x.x.x`, possibly because python3 is not installed there: [Errno 12] Cannot allocate memory

Solution Unverified - Updated -

Issue

  • Ceph orchestrator is unable to connect one of the host and wrongly reporting as offline while the node is still up and running (services e.g. osd, mon etc also running there properly)

    [WRN] CEPHADM_HOST_CHECK_FAILED: 1 hosts fail cephadm check
   host hostXX (x.x.x.x) failed check: Can't communicate with remote host `.x.x.x.x`, possibly because python3 is not installed there: [Errno 12] Cannot allocate memory

Environment

  • Red Hat Ceph Storage (RHCS) 5, 6, 7, 8

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