I am using the official guacamole docker images (1.6.0) both client and server and running on RHEL 9.5 and I have an automated selenium based python script to bring up RDP sessions via guacamole. 100 user per each iteration. No matter how many iterations I do, all users get logged in without any issue.
Subba On Mon, Dec 15, 2025 at 7:17 PM Tobias Feller | OPC <[email protected]> wrote: > Hi, > > sadly - the same problem on Debian 13 as docker host. > > Dec 15 13:35:25 kernel: guacd[3479749]: segfault at 7f5b069d6bf8 ip > 00007f535d9cd4c8 sp 00007f53069d32e8 error 4 in > *ld-musl-x86_64.so.1*[574c8,7f535d98a000+4c000] > likely on CPU 7 (core 7, socket 0) > Dec 15 13:35:25 kernel: Code: e3 18 ... 0a b8 16 > > After "some" Connections, didn't really count them... > > At some point - no new connections can be started. > > CPU/RAM (25%) are fine. > > After i closed some of the (rdp) connections (all on different servers) > the system can connect to the "outstanding" servers. > > Is it a problem to use a new Alpine image? > > > https://github.com/abesnier/docker-guacamole/blob/master/Dockerfile.alpine.base > > also works with a newer. > > Tobias > Am 15.12.2025 um 13:31 schrieb Nick Couchman: > > On Mon, Dec 15, 2025 at 6:23 AM Tobias Feller | OPC <[email protected]> > <[email protected]> wrote: > > Hi Subba, > > i think it is still there. In my opinion it is a combination of > > docker image (outdated) alpine > and maybe only in combination with the docker host (debian 12) > > I have now a new host (debian 13) in the HA-setup with the current official > guacamole docker running, didn't test yet. > > But because it is not integrated in the Loadbalancer i can do a test now > without interrupt the clients. > > I will report back today my test-results. > > Tobias > > Am 15.12.2025 um 11:15 schrieb Subbareddy Alamuru: > > Hi, > > I am trying to reproduce this bug where after 60 RDP connections, guacamole > fails to establish new RDP connections which was first observed in 1.5.5. > > However I could not see this issue in the 1.6.0 guacamole version. Anyone out > there still facing this issue? I just wanted to know for sure if I can > upgrade my production guacamole version to the 1.6.0 version where ALT+TAB in > full screen is working. > > > It definitely still occurs under some circumstances - as Tobias > mentioned, it is a bit dependent upon the environment in which guacd > is running. I have never produced the issue in my environment under > either 1.5.5 or 1.6.0, but I run guacd built native on RHEL/Rocky. > However several other folks have produced it in a variety of different > environments, including the Docker image. > https://issues.apache.org/jira/browse/GUACAMOLE-1998 > > There is a potential fix for it, but it is quite extensive and still > under review. > https://github.com/apache/guacamole-server/pull/614 > > -NIck > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
