Hi, radosgw-admin -v ceph version 15.2.4 (7447c15c6ff58d7fce91843b705a268a1917325c) octopus (stable) Multisite sync was something I had working with a previous cluster and an earlier Ceph version, but it doesn't now, and I can't understand why. If anyone with an idea of a possible cause could give me a clue I would be grateful. I have clusters set up using Rook, but as far as I can tell, that's not a factor. On the primary cluster, I have this: radosgw-admin zonegroup get --rgw-zonegroup zonegroup-a { "id": "b115d74a-2d5f-4127-b621-0223f1e96c71", "name": "zonegroup-a", "api_name": "zonegroup-a", "is_master": "true", "endpoints": [ "http://192.168.30.8:80" ], "hostnames": [], "hostnames_s3website": [], "master_zone": "024687e0-1461-4f45-9149-9e571791c2b3", "zones": [ { "id": "024687e0-1461-4f45-9149-9e571791c2b3", "name": "zone-a", "endpoints": [ "http://192.168.30.8:80" ], "log_meta": "false", "log_data": "true", "bucket_index_max_shards": 11, "read_only": "false", "tier_type": "", "sync_from_all": "true", "sync_from": [], "redirect_zone": "" }, { "id": "6ba0ee26-0155-48f9-b057-2803336f0d66", "name": "zone-b", "endpoints": [ "http://192.168.30.108:80" ], "log_meta": "false", "log_data": "true", "bucket_index_max_shards": 11, "read_only": "false", "tier_type": "", "sync_from_all": "true", "sync_from": [], "redirect_zone": "" } ], "placement_targets": [ { "name": "default-placement", "tags": [], "storage_classes": [ "STANDARD" ] } ], "default_placement": "default-placement", "realm_id": "8c38fa05-c19d-4e30-bc98-e2bc84eccb68", "sync_policy": { "groups": [] } } It's identical on the secondary (that's after a realm pull, an update of the zone-b endpoints, and a period commit), which I double-checked by piping the output to md5sum on both sides. The system user created on the primary is radosgw-admin user info --uid realm-a-system-user { ... "keys": [ { "user": "realm-a-system-user", "access_key": "IUs+USI5IjA8WkZPRjU=", "secret_key": "PGRDSzRERD4lbF9AYThuLzkvW1QvL148Q147PA==" } ... } The zones on both sides have these keys radosgw-admin zone get --rgw-zone zone-a { ... "system_key": { "access_key": "IUs+USI5IjA8WkZPRjU=", "secret_key": "PGRDSzRERD4lbF9AYThuLzkvW1QvL148Q147PA==" }, ... } radosgw-admin zone get --rgw-zonegroup zonegroup-a --rgw-zone zone-b { ... "system_key": { "access_key": "IUs+USI5IjA8WkZPRjU=", "secret_key": "PGRDSzRERD4lbF9AYThuLzkvW1QvL148Q147PA==" }, ... } Yet, on the secondary radosgw-admin sync status realm 8c38fa05-c19d-4e30-bc98-e2bc84eccb68 (realm-a) zonegroup b115d74a-2d5f-4127-b621-0223f1e96c71 (zonegroup-a) zone 6ba0ee26-0155-48f9-b057-2803336f0d66 (zone-b) metadata sync preparing for full sync full sync: 64/64 shards full sync: 0 entries to sync incremental sync: 0/64 shards metadata is behind on 64 shards behind shards: [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63] data sync source: 024687e0-1461-4f45-9149-9e571791c2b3 (zone-a) syncing full sync: 0/128 shards incremental sync: 128/128 shards data is caught up with source and on the primary radosgw-admin sync status realm 8c38fa05-c19d-4e30-bc98-e2bc84eccb68 (realm-a) zonegroup b115d74a-2d5f-4127-b621-0223f1e96c71 (zonegroup-a) zone 024687e0-1461-4f45-9149-9e571791c2b3 (zone-a) metadata sync no sync (zone is master) 2020-11-06T10:58:46.345+0000 7fa805c201c0 0 data sync zone:6ba0ee26 ERROR: failed to fetch datalog info data sync source: 6ba0ee26-0155-48f9-b057-2803336f0d66 (zone-b) failed to retrieve sync info: (13) Permission denied Given that all the keys above match, that "permission denied" is a mystery to me, but it does accord with: export AWS_ACCESS_KEY_ID="IUs+USI5IjA8WkZPRjU=" export AWS_SECRET_ACCESS_KEY="PGRDSzRERD4lbF9AYThuLzkvW1QvL148Q147PA==" s3cmd ls --no-ssl --host-bucket= --host=192.168.30.8 # OK, but: s3cmd ls --no-ssl --host-bucket= --host=192.168.30.108 # ERROR: S3 error: 403 (InvalidAccessKeyId) # Although curl -L http://192.168.30.108 # works: <?xml version="1.0" encoding="UTF-8 ... 192.168.30.108 is the external IP, but just to be certain I was hitting zone-b, I tried this also within the cluster using its internal IP s3cmd ls --no-ssl --host-bucket= --host=10.41.157.115 # ERROR: S3 error: 403 (InvalidAccessKeyId) This seems to be the reason it's not syncing, but why? The user with those keys existed on the primary before the realm pull, in agreement with every procedure I have seen for setting up multisite. Any suggestions? Regards, Michael -- CONFIDENTIALITY This e-mail message and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail message, you are hereby notified that any dissemination, distribution or copying of this e-mail message, and any attachments thereto, is strictly prohibited. If you have received this e-mail message in error, please immediately notify the sender and permanently delete the original and any copies of this email and any prints thereof. ABSENT AN EXPRESS STATEMENT TO THE CONTRARY HEREINABOVE, THIS E-MAIL IS NOT INTENDED AS A SUBSTITUTE FOR A WRITING. 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