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Ceph Cookbook - Second Edition by Karan Singh, Michael Hackett, Vikhyat Umrao

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How to do it...

  1. How to properly failover after an orderly shutdown:
    • Stop all client's that are writing to the primary image
    • Demote the primary image located on the ceph cluster:
               # rbd mirror image demote data/image-1
    • Promote the non-primary image located on the backup cluster:
                # rbd-mirror image promote data/image-1
    • Validate image has become primary on the backup cluster:
                # rbd mirror image status data/image-1
    • Resume client access to the image:
  1. How to properly failover after a non-orderly shutdown:
    • Validate that ...

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