On 18 Jul 2019, at 11.44, Alessio Cecchi via dovecot <dovecot@dovecot.org> wrote:

Hi,

I have a setup with 3 Dovecot Director v2.2.36 and director_consistent_hashing = yes ;-)

Now I would like to upgrade to 2.3.7, first only Director and after also Backend.

Can works fine a ring of director with mixed 2.2 and 2.3 version?

Mi idea is to setup a new Director server with 2.3, stop one server with 2.2 and insert the new 2.3 in the current ring to check if works fine.

If all works fine I will replace all Director 2.2 with 2.3 version.

There's no known reason why it wouldn't work. But be prepared in case there is an unknown reason.

Hi,

one server of the ring is now running Dovecot 2.3.7 and works fine with the others Dovecot 2.2 since 3 days.

I notice only that the load avarage of this CentOS 7 server is higher compared with CentOS 6 and Dovecot 2.2, but I don't know if is related to the new operating system or Dovecot (hardware is the same).

If I do not encounter problems in the next days I will also update the other Directors.

Thanks

-- 
Alessio Cecchi
Postmaster @ http://www.qboxmail.it
https://www.linkedin.com/in/alessice