Need explanation on how to setup Ceph Storage Node journals partitions using GPT labels

Solution Verified - Updated -

Issue

  • When following the documentation for deployment including Ceph
    ,We see that it's necessary to configure/partition the Ceph OSD disks before installing them with Openstack.
  • How can we use ironic/the undercloud to perform disk partition configuration on new Ceph nodes? We do not want to manually configure dozens of machines/partitions.
  • How can the undercloud be configured to deploy something like the discovery image but with the sole purpose of configuring a machine's disks?

Environment

Red Hat OpenStack 7.0

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