On Sat, Oct 7, 2023 at 4:23 PM Maciej Konigsman
wrote:
> Hi,
>
> I would like to run Guacamole in HA.
> I identified four services to achieve HA:
> 1. Load balancer
> 2. Web UI (Tomcat)
> 3. Guacd
> 4. DB (MySQL)
>
> I know how to configure HA for 1, 2 and 4
> I'm having an issue with understanding/finding documentation or examples
> for guacd. My main concern is how to keep a session (including recording)
> if a container with guacd fails or gets restarted.
>
The first thing to note would be that there's no way to synchronize session
information between instances of guacd. So, if a system running guacd
crashes, or guacd itself crashes completely, you won't be able to maintain
those sessions - the users will get disconnected and will have to
re-establish connections with working guacd instances. This is also true of
the Web UI (Tomcat) portion of Guacamole - users logged in and sessions
established on one of the Web front-ends will not be visible to or
synchronized with sessions and users on the other web front-end. This will
also impact your ability use connection sharing effectively, as users on
one web front-end and/or guacd instance will not be able to share their
connections with users who happen to log in to a different web front end,
or who connect through a different guacd.
As far as how to load-balance guacd, you can use a network load balancer
(like HAProxy) and then use session "stickiness" to make sure that your web
front-end systems get consistently connected to the same guacd instance.
-Nick
>
