migrating existing ceph clusters to rook #13792
yeoldegrove
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Hey @yeoldegrove , |
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I want to revive the question from #12045 if migrations of existing ceph clusters to rook could be supported.
We might have the use case inside the Sovereign Cloud Stack Community to migrate clusters deployed via ceph-ansible to be fully managed by rook.
Rook External Storage Cluster is not what we want, because we want to get rid of the old deployment and management solution
ceph-ansible
.Some ground work was already done by us internally to answer the question if a migration would be possible at all.
We actually managed already to bootstrap a rook cluster (via applying a custom configmap
rook-ceph-mon-endpoints
) that joins an existing "old cluster" add later swap out MONs/MGRs from the "old cluster" and also imported OSDs in rook.At this point of time we're even confident that this could be a "near online migration experience".
We just want to know if there would be an interest to somehow document or even support this in the rook context. We also might have some resources to do that initially.
What also would be interesting is if there already is a tool that genereated rook-CRDs based on an existing ceph cluster?
Objections and suggestions to additonal challenges are also welcome.
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