(title was unable to create 50+ VNC+Gnome sessions (dubs/systemctl limits) )
I am trying to create 50 VNC display session on a CentOS 7.6 machine. I created a local user. Once logged in, I could create only 9 sessions.
After this VNC Server starts, immediately errors out with
Sample VNC log Copyright (C) 1999-2017 TigerVNC Team and many others (see README.txt) See http://www.tigervnc.org for information on TigerVNC. Underlying X server release 12001000, The X.Org Foundation Mon Nov 25 12:42:38 2019 vncext: VNC extension running! vncext: Listening for VNC connections on all interface(s), port 5959 vncext: created VNC server for screen 0 /localhome//iesdvnc/.vnc/xstartup: line 5: 28820 Trace/breakpoint trap /etc/X11/xinit/xinitrc
dmesg has something like below...
47.022483] traps: gnome-session-b trap int3 ip:7fd7ea82fb11 sp:7ffd0a245090 error:0 [ 55.985977] traps: gnome-session-b trap int3 ip:7f81b8595b11 sp:7ffdbfee0910 error:0 [ 60.403733] traps: gnome-session-b trap int3 ip:7fb06491ab11 sp:7ffd42f68e00 error:0 [ 60.982362] traps: gnome-session-b trap int3 ip:7fa59f459b11 sp:7ffea65498d0 error:0 [ 62.825407] traps: gnome-session-b trap int3 ip:7f2e4334fb11 sp:7ffd33387220 error:0
I suspect this is to do with system limits for user or dbus limits. I am unable to proceed though. Please suggest what could be changed to create tens of VNC displays.
After more debugging error is (from # abrt-cli list )
ERROR: Failed to connect to system bus: GDBus.Error:org.freedesktop.DBus.Error.LimitsExceeded: The maximum number of active connections for UID <user id> has been reached