From BBB 2.5 to BBB 3 and procedure for migrating from Greenlight v2 to Greenlight v3?

[MIssac]

Hi everyone,

I'm currently running BBB 2.5.18 with Greenlight v2 on an Ubuntu 20.04 server.

I plan to install BBB 3 on a fresh server running Ubuntu 22.04. This will erase and replace the current server.
I would like to recover the Greenlight v2 database in Greenlight v3 on the new server so that all the users don't have to subscribe again.

I read the documentation about migrating from Greenlight v2 to Greenlight v3 https://docs.bigbluebutton.org/greenlight/v3/migration/
but I'm not quite sure how to proceed since both versions need to be running at the same time.

1/ should I run Greenlight v3 alongside v2 on the current Ubuntu 20.04 server and migrate from v2 to v3, then backup Greenlight v3 and redeploy it on the new U22.04 server once BBB 3 is installed?

2/ should I backup the current Greenlight v2 database from /root/greenlight, install the new U22.04+BB3 configuration, restore Greenlight v2, install v3 and migrate from v2 to v3?

Many thanks in advance for any help,
Best
Mélanie