Hi, My first question on this list …. 2nd attempt because the first one didn’t make it (I hope)?
I'm trying out RGW multi-site sync policies. I have a test/PoC setup with 16.2.6 using cephadm (which, by the way, I DO like) I only use RGW/S3 There is one realm (myrealm), one zonegroup (myzg) and 3 zones: Zone A, zone B and zone DR Zone A and B are on the same ceph instance with different rgw processes and pools, zone DR is on a second cluster, in case that matters. Without any sync policies all data is synced perfectly fine between all zones What I want to see is: Data from zone A is synced directionally to zone DR, but not to zone B Data from zone B is not synced anywhere Data from zone DR is not synced back/anywhere i.e. clients writing to zone A get their data "backed up" to zone DR, while clients writng to zone B don't get their data "backed" up to a second zone. Clients don't have access to zone DR. I used sync policies this way: radosgw-admin sync group create --group-id=drsync --status=allowed radosgw-admin sync group flow create --group-id=drsync --flow-id=a2dr --flow-type=directional --source-zone=a --dest-zone=dr radosgw-admin sync group pipe create --group-id=drsync --pipe-id=allbuck --source-zones='*' --source-bucket='*' --dest-zones='*' --dest-bucket='*' radosgw-admin sync group modify --group-id=drsync --status=enabled radosgw-admin period update --commit Now, from a data-in-buckets perspective all looks fine Add data to bucket buck on A -> appears on buck on DR, but not in B Add data to bucket buck on B -> doesn't appear in A or DR Same for all other combinations, just as I want it. BUT radosgw-admin sync status with --rgw-zone=A or DR or B after adding or removing data always shows some "data is behind on X shards", apparently for all the shards that are - intentionally - not synced. Those “behind” shards accumulate over time and never go away again. Is that just annoying but normal? Or is that a bug? Or is my configuration just "bad" and could be changed so I don't have those sort-of errors with the sync status. When I used bucket level sync policies (only sync certain buckets from zone A to DR, no zone B) I had iirc the same effect. What I'm really trying to achieve is something like "user sync policies", i.e. - User X data should be synced from A to DR - User Y data should only stay in A I’m trying to emulate that by using the existing/documented sync policies. User X gets URL for zone A, user Y gets URL for zone B (or with bucket level policies both get URL for zone A and for user X syncing is turned on “on demand” for certain existing buckets - inconvenient) Best would be if I could flip a flag and change the behaviour per user :) And even better if it was easy to understand, i.e. if user's sync-flag is turned on all his data is synced, not just new data. If user's sync-flag is turned off, all his data is removed from the DR zone. Thanks for any input :) Ciao, Uli _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
