Hi, On 19/08/2026 17:09, Patrick Donnelly wrote:

If you are running multisite, you must set the ``rgw_sigv4_insecure`` option to true before you begin to upgrade. After all clusters are upgraded, set the option to ``false`` again.

Stupid question - how/where does one set this, and will this be understood by older versions of Ceph? I ask because I have a Reef multisite setup, which should be supported to upgrade to Tentacle. Which I fear I'm now going to have to do in a hurry! AFAICT this is a new config setting, so I'd expect older versions of Ceph won't understand it... [and searching the reef docs doesn't find it] Thanks, Matthew