Removing hosts using ceph orchestrator does not remove host

Solution Verified - Updated -

Environment

  • Red Hat Ceph Storage 5

Issue

Resolution

  • Red Hat is aware of this issue and is working on enhancing a future version of Red Hat Ceph Storage 5

  • the following procedure is the correct way to remove a host

    • login to cephadm shell

      $ cephadm shell

    • fetch the host details

      # ceph orch host ls

    • drain all the daemons from the host

      # ceph orch host drain HOSTNAME

    • check the status of OSD removal

      # ceph orch osd rm status

    • check if all the daemons are removed from the storage cluster

      # ceph orch ps HOSTNAME

    • When no placement groups (PG) are left on the OSD, the OSD is decommissioned and removed from the storage cluster

      # ceph orch host rm HOSTNAME

Root Cause

  • the documented procedure removes a none existing service instead of the host
  • the documentation is missing the classification host in the last statement instructing the Ceph orchestrator to act on.

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