I am wondering what the best way is of deleting a cluster, removing all the OSDs, and basically start over. I plan to create a few ceph test clusters to determine what works best in our use-case. There is no real data being stored, so I don't care about data-loss.
I have a cephfs setup on top of two pools: data and metadata. Presumably I can remove this easily with 'ceph fs rm' 1. Do I need to delete the OSD pools? 2. How to I remove the OSDs from the cluster without ceph doing what it does and rebalancing data between the remaining OSDs? I read the Manually Remove OSD documentation page, https://docs.ceph.com/docs/master/rados/operations/add-or-rm-osds/#removing-osds-manual, but I want to remove ALL OSDs from the cluster? Is this still the right set of steps/commands? Thanks for any insight for a ceph newbie. PS - If it matters the servers running ceph-mon and ceph-mgr are on separate computers than the servers running ceph-osd. Sincerely, Shawn Kwang -- Associate Scientist Center for Gravitation, Cosmology, and Astrophysics University of Wisconsin-Milwaukee office: +1 414 229 4960
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