.Ceph no longer creates pools by default
Previously, `rbd` pools were created by default upon Ceph cluster creation. This caused several problems, including unnecessary health warnings. Pools are now created only by the user based on their needs rather than by default.
Currently, we auto-create the 'rbd' pool when a cluster is created.
There are a few problems with this:
* We can't sanely guess the pg num at this point, and users will try and use the pool with a silly small pg num.
* The user may not even want rbd.
* The pool may be created before there are any OSDs leading to awkward health warnings about inability to create its pgs
The solution is not to create any pools by default -- pool creation must be a guided thing depending on what the user wants to use the cluster for.
This may break some tools/tests that expected there to always be at least one pool, or which expected that the rbd pool would always be there.
I observed that there were no pools created by default. I even observed that when a RGW daemon was added, rgw-data pool was created only when IOs were started.
Moving to VERIFIED state
$ sudo ceph -s --cluster 12_luminous
mon: 1 daemons, quorum magna097
osd: 9 osds: 9 up, 9 in
pools: 0 pools, 0 pgs
objects: 0 objects, 0 bytes
usage: 0 kB used, 0 kB / 0 kB avail
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.