Hi there,
I have a severe issue with x2go. There are 4 Servers (ubuntu 20.04) and a single PostgresQL Database running in Docker on a 5th device. It all started after noticing that some users couldn´t resume sessions, this seemed to spread to all users over several months. Restarting the Server fixed the issue short term, but is not an option to do frequently.
Some things I noticed: old references going to nowhere, but it does not happen.
- the users ~/.x2go gets filled up with references to /tmp/.x2go-<user>/<session-id> and ofc /tmp gets populated accordingly. Once a Session is closed, everything persists there. Since /tmp will be cleaned on a restart, I would assume some job would also delete these
2. While I can click the "suspend" button on the client, the session will not change on the server. Even manually running x2gosuspend-session <session-id> on the server via e.g. ssh and checking the status via x2golistsessions returns |R| for the session in question.
- when suspending a session, I would expect it to create a folder in ~/.cache/sessions/xfce4-session-<servername:number>. It does not. If I try to connect to a still running (server side, but from client side "suspended") session, it will either prompt a wrong credentials error or continue normally, except no window will ever show up. In x2goclient debug mode It will not whow the reappaering "searching proxy for window: <session-id>" but will simply stop after: "x2go-DEBUG-../src/sshmasterconnection.cpp:2065> Executing remote: "bash -l -c 'echo "X2GODATABEGIN:cb3d39c0-4759-419a-a1da-7c6681410a50"; export PATH="/usr/local/bin:/usr/bin:/bin";export TERM="dumb"; x2goresume-session <session-id> 800x600 lan nopack us auto 1 both no; echo "X2GODATAEND:cb3d39c0-4759-419a-a1da-7c6681410a50";'" x2go-DEBUG-../src/sshmasterconnection.cpp:2082> New exec channel created. x2go-DEBUG-../src/onmainwindow.cpp:10344> Resolved localhost. x2go-DEBUG-../src/onmainwindow.cpp:10372> Port already in use: 6002 x2go-DEBUG-../src/onmainwindow.cpp:10602> X.Org Server started on DISPLAY 2. x2go-DEBUG-../src/onmainwindow.cpp:10824> All helper servers for Windows are started."
No window shows, I can not resume a session. I can run terminate and it will not show up anymore on the list on the client side or using x2golistsessions, but it will still be there in the database.
- Having a look at the database, I can see thousands of entries. Most of those sessions dont exist anymore, no user can connect to them, they are not shown using x2golistsessions. I thought I could simply delete them like shown in the wiki (https://wiki.x2go.org/doku.php/wiki:advanced:multi-node:x2goserver-pgsql?s[]=x2godbadmin), but it does not work. Trying to delete any entry will always result in DELETE 0.
I hope someone has an Idea or that this is helpful in any way to debug and improve x2go.
Best, Jooris