Hi.
I've been running Guacamole since around 2020, upgrading reasonably
quickly each and every time there's been an update. I update my Tomcat
to the latest 9.X release from time to time (currently 9.0.102) , and my
JDK to the latest 8.X release from time to time (currently jdk8u452-b09).
Recently, after attempting an upgrade from Guacamole 1.5.5 to 1.6.0, I
ran into a problem. Initially, everything seemed to work just fine. I
can connect to any of the systems I have available. However, at some
point later, I notice in the tomcat logs a lot of "connects" and
"disconnects" to hosts. Users start complaining that "Guacamole isn't
working". What I noticed at this point was that when they would try to
return to a connection, it would connect, and their existing connecting
would start to redraw, but it would hang in the middle. If I restart
guacd at this point, it starts to work again, but the problem comes
back. Some users would see it. Other users were fine.
I feel like there's a bug hiding, and it may require a lot of user
activity to get to it. I ended up creating a devel system for testing,
and I'm running guac 1.6.0 there, and I've enabled full debugging, but I
can't seem to make it happen there yet. Is there any easy way I can
force a bunch of connections? The devel system is running labtest Rocky
8.10 (RHEL8.10) with latest kernel and patches and this matches the
production system. They are both installed with the same kickstart
configuration.
I may have to re-install 1.6.0 on the production system to get the
debugging information that I need, but I'd really rather not do that it
if not necessary since it causes user inconvenience, and a lot of
emails. Guacamole is an important part of our educational environment.
Jason.
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