Hi folks, We have a number of ceph clusters organized into one realm and three zonegroups. All the clusters are running ceph 17 built with cephadm. I am trying to move the metadata master from one zonegroup (us-east-1) to zone mn1 in zonegroup us-central-1, by following the steps in the documentation <https://docs.ceph.com/en/quincy/radosgw/multisite/#changing-the-metadata-master-zone>, but it doesn't work as advised. I ran these commands on a system in the `mn1` zone in the us-central-1 zonegroup. sudo radosgw-admin zone modify --rgw-zone=mn1 --master sudo radosgw-admin zonegroup modify --rgw-zonegroup=us-central-1 --master sudo radosgw-admin period update --commit When I carry out those steps, the period update gives me this error: 2024-06-26T11:19:12.256+0000 7f1f5f610e40 0 Error updating periodmap, multiple master zonegroups configured 2024-06-26T11:19:12.256+0000 7f1f5f610e40 0 master zonegroup: 9ef7877b and a3abf9e1 Here we have problem (1) that the command doesn’t move the master from a3abf9e1 (us-east-1) to 9ef7877b (us-central-1). There is a fix advised by a 2016 post to ceph-users <https://www.spinics.net/lists/ceph-users/msg30873.html> -- explicitly mark the old zonegroup master as no longer the master. sudo radosgw-admin zonegroup modify --rgw-zonegroup=us-east-1 --master=false However, the json output of this command is a modified map of the us-central-1 zonegroup, showing that the 'is_master' flag has been set back to 'false' for that zonegroup. Thus we have problem (2) that I am unable to modify two different zonegroups from the same system, leaving me unable to change the realm master. `sudo radosgw-admin zonegroup get --rgw-zonegroup=us-east-1`, when run from the us-central-1 zonegroup, just shows me the us-central-1 zonegroup details. Changing the `=` to a space does not have any effect. My brief attempts at reading the code for rgw_admin.cc on github left me unenlightened. Can anyone offer any assistance here? -- Tim Hunter Senior Infrastructure Engineer telnyx.com [image: Telnyx logo]