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kasmtech / workspaces-core-images

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Getting Black screen when container image is created from dockerfile #16

Closed shkpk closed 2 years ago

shkpk commented 2 years ago

I have used following dockerfile to create container image for core ubuntu https://github.com/kasmtech/workspaces-core-images/blob/develop/dockerfile-kasm-core Image created fine however after container is launched, I get only black screen in browser.

command used to create container image

docker build -t core-ubuntu -f dockerfile-kasm-core .

command used to create container

docker run -d --rm  -it --shm-size=512m -p 6901:6901 -e VNC_PW=password core-ubuntu:latest

When I check docker container log, I keep getting

------------------ Started Audio Out  ----------------------------
Kasm Audio Out PID: 515
/dockerstartup/vnc_startup.sh: line 247: kill: (515) - No such process
Restarting Audio Out Service
Starting audio server
Starting audio service

------------------ Started Audio Out  ----------------------------
Kasm Audio Out PID: 517
/dockerstartup/vnc_startup.sh: line 247: kill: (517) - No such process
Restarting Audio Out Service
Starting audio server
Starting audio service

I checked running processes in container and they seems to be less then when i create container using official docker image core-ubuntu-focal:develop

processes in container created from my image

default:~$ ps aux
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
default      1  0.0  0.0   7024  3524 pts/0    Ss+  15:32   0:00 /bin/bash /dockerstartup/vnc_startup.sh /dockerstartup/kasm_startup.sh --wait
default     61  0.1  2.3 1467540 93420 pts/0   Sl+  15:32   0:00 /usr/bin/Xvnc :1 -auth /home/kasm-user/.Xauthority -depth 24 -desktop a167997a5a7f:1 (
default     70  0.0  0.9 556212 37644 pts/0    Sl+  15:32   0:00 /dockerstartup/jsmpeg/kasm_audio_out-linux kasmaudio 8081 4901 /home/kasm-user/.vnc/se
default     73  0.0  0.0   5008   708 pts/0    S+   15:32   0:00 /dockerstartup/audio_input/kasm_audio_input_server --ssl --auth-token kasm_user:passwo
default     74  0.0  0.0   5008   712 pts/0    S+   15:32   0:00 /dockerstartup/upload_server/kasm_upload_server --ssl --auth-token kasm_user:password
default     75  0.0  0.0   7792   692 pts/0    S+   15:32   0:00 tail -f /home/kasm-user/.vnc/a167997a5a7f:1.log
default     96  0.0  0.0   9192  2020 pts/0    S+   15:32   0:00 dbus-launch --autolaunch 5cf8f72645d24587a19039e67e81459c --binary-syntax --close-stde
default     97  0.0  0.5  77272 23724 pts/0    S+   15:32   0:00 /dockerstartup/audio_input/kasm_audio_input_server --ssl --auth-token kasm_user:passwo
default     98  0.1  0.9  88020 36956 pts/0    S+   15:32   0:00 /dockerstartup/upload_server/kasm_upload_server --ssl --auth-token kasm_user:password
default     99  0.0  0.0   9024  2460 ?        Ss   15:32   0:00 /usr/bin/dbus-daemon --syslog-only --fork --print-pid 6 --print-address 8 --session
default    130  0.0  0.0   9192  2004 pts/0    S+   15:32   0:00 /usr/bin/dbus-launch --exit-with-session --sh-syntax
default    131  0.0  0.0   9024  2964 ?        Ss   15:32   0:00 /usr/bin/dbus-daemon --syslog --fork --print-pid 6 --print-address 8 --session
default    155  0.0  0.1 239200  7644 ?        Sl   15:32   0:00 /usr/libexec/gvfsd
default    164  0.0  0.1 381928  7148 ?        Sl   15:32   0:00 /usr/libexec/at-spi-bus-launcher
default    170  0.0  0.0   8892  3720 ?        S    15:32   0:00 /usr/bin/dbus-daemon --config-file=/usr/share/defaults/at-spi2/accessibility.conf --no
default    605  1.5  0.1   7616  4268 pts/1    Ss   15:39   0:00 /bin/bash
default    627  0.0  0.0   7756   692 pts/0    S+   15:39   0:00 sleep 3
default    628  0.0  0.0  10916  3240 pts/1    R+   15:39   0:00 ps aux

processes in container created from core-ubuntu-focal:develop

default:~$ ps aux
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
default      1  0.0  0.0   7024  3480 pts/0    Ss+  15:34   0:00 /bin/bash /dockerstartup/vnc_startup.sh /dockerstartup/kasm_startup.sh --wait
default     60  0.2  3.3 1631508 134444 pts/0  Sl+  15:34   0:01 /usr/bin/Xvnc :1 -auth /home/kasm-user/.Xauthority -depth 24 -desktop cdb08852f66e:1 (
default     69  0.0  1.9 442360 76872 pts/0    Sl+  15:34   0:00 xfce4-session
default     70  0.7  0.9 556384 39600 pts/0    Sl+  15:34   0:02 /dockerstartup/jsmpeg/kasm_audio_out-linux kasmaudio 8081 4901 /home/kasm-user/.vnc/se
default     91  1.9  0.3 542140 13044 ?        Sl   15:34   0:06 pulseaudio --start
default    105  2.7  1.0 567876 40768 pts/0    SLl+ 15:34   0:09 ffmpeg -v verbose -f pulse -fragment_size 2000 -ar 44100 -i default -f mpegts -correct
default    106  0.0  0.0   5008   648 pts/0    S+   15:34   0:00 /dockerstartup/audio_input/kasm_audio_input_server --ssl --auth-token kasm_user:passwo
default    107  0.0  0.0   5008   708 pts/0    S+   15:34   0:00 /dockerstartup/upload_server/kasm_upload_server --ssl --auth-token kasm_user:password
default    108  0.0  0.0   7792   696 pts/0    S+   15:34   0:00 tail -f /home/kasm-user/.vnc/cdb08852f66e:1.log
default    115  0.0  0.0   9192  1988 pts/0    S+   15:34   0:00 /usr/bin/dbus-launch --sh-syntax --exit-with-session xfce4-session
default    116  0.0  0.0   9404  3584 ?        Ss   15:34   0:00 /usr/bin/dbus-daemon --syslog --fork --print-pid 6 --print-address 8 --session
default    119  0.0  0.5  77272 24048 pts/0    S+   15:34   0:00 /dockerstartup/audio_input/kasm_audio_input_server --ssl --auth-token kasm_user:passwo
default    120  0.0  0.2 311840  9220 ?        Sl   15:34   0:00 /usr/libexec/at-spi-bus-launcher
default    125  0.0  0.1 239200  7632 ?        Sl   15:34   0:00 /usr/libexec/gvfsd
default    126  0.1  0.9  88020 36796 pts/0    S+   15:34   0:00 /dockerstartup/upload_server/kasm_upload_server --ssl --auth-token kasm_user:password
default    134  0.0  0.0   9024  3920 ?        S    15:34   0:00 /usr/bin/dbus-daemon --config-file=/usr/share/defaults/at-spi2/accessibility.conf --no
default    138  0.0  0.1 232308  6024 ?        Sl   15:34   0:00 /usr/lib/x86_64-linux-gnu/xfce4/xfconf/xfconfd
default    144  0.0  0.1 164936  7716 ?        Sl   15:34   0:00 /usr/libexec/at-spi2-registryd --use-gnome-session
default    150  0.0  0.0   6032   448 ?        Ss   15:34   0:00 /usr/bin/ssh-agent -s
default    155  0.0  0.0   9596   292 ?        Ss   15:34   0:00 /usr/bin/gpg-agent --sh --daemon --write-env-file /home/kasm-user/.cache/gpg-agent-inf
default    156  0.0  0.9 239236 37200 pts/0    Sl+  15:34   0:00 xfwm4
default    163  0.0  0.5 227504 21828 ?        Ssl  15:34   0:00 xfsettingsd
default    164  0.0  0.8 274468 32252 pts/0    Sl+  15:34   0:00 xfce4-panel
default    171  0.0  0.0   4888  1848 pts/0    S+   15:34   0:00 /bin/sh /usr/bin/execThunar.sh
default    183  0.0  0.5 343968 23684 pts/0    Sl+  15:34   0:00 /usr/bin/Thunar --daemon
default    188  0.0  0.5 195232 24132 pts/0    Sl+  15:34   0:00 /usr/lib/x86_64-linux-gnu/xfce4/panel/wrapper-2.0 /usr/lib/x86_64-linux-gnu/xfce4/pane
default    189  0.2  2.4 431084 97704 pts/0    Sl+  15:34   0:00 xfdesktop
default    195  0.0  1.0 469460 42632 pts/0    Sl+  15:34   0:00 nm-applet
default    196  0.0  0.1 164232  6976 pts/0    Sl+  15:34   0:00 xiccd
default    201  0.0  1.2 634748 50692 pts/0    Sl+  15:34   0:00 /usr/libexec/evolution-data-server/evolution-alarm-notify
default    208  0.0  0.5 266580 22740 pts/0    Sl+  15:34   0:00 light-locker
default    222  0.0  0.1 158228  5724 ?        Sl   15:34   0:00 /usr/libexec/dconf-service
default    237  0.0  0.6 389872 25852 ?        Sl   15:34   0:00 /usr/libexec/evolution-source-registry
default    243  0.0  0.8 548888 34828 ?        Sl   15:34   0:00 /usr/libexec/goa-daemon
default    252  0.0  0.2 318028 11484 ?        Sl   15:34   0:00 /usr/libexec/goa-identity-service
default    258  0.0  0.7 846404 31040 ?        Sl   15:34   0:00 /usr/libexec/evolution-calendar-factory
default    269  0.0  0.7 820156 29380 ?        Sl   15:34   0:00 /usr/libexec/evolution-addressbook-factory
default    278  0.0  0.1 161692  6356 ?        Sl   15:34   0:00 /usr/libexec/gvfsd-metadata
default    292  0.0  0.1 238448  7164 ?        Sl   15:34   0:00 /usr/libexec/gvfs-udisks2-volume-monitor
default    298  0.0  0.1 237444  6220 ?        Sl   15:34   0:00 /usr/libexec/gvfs-gphoto2-volume-monitor
default    305  0.0  0.1 235380  6076 ?        Sl   15:34   0:00 /usr/libexec/gvfs-goa-volume-monitor
default    310  0.0  0.1 316236  7620 ?        Sl   15:34   0:00 /usr/libexec/gvfs-afc-volume-monitor
default    316  0.0  0.1 235168  5624 ?        Sl   15:34   0:00 /usr/libexec/gvfs-mtp-volume-monitor
default    355  0.0  0.0   9192  1892 pts/0    S+   15:34   0:00 /usr/bin/dbus-launch --exit-with-session --sh-syntax
default    356  0.0  0.0   9024  2400 ?        Ss   15:34   0:00 /usr/bin/dbus-daemon --syslog --fork --print-pid 6 --print-address 8 --session
default    592  0.0  0.0   7756   632 pts/0    S+   15:40   0:00 sleep 3
default    593  1.0  0.1   7616  4260 pts/1    Ss   15:40   0:00 /bin/bash
default    615  0.0  0.0  10916  3240 pts/1    R+   15:40   0:00 ps aux

image

Can someone help please?

mmcclaskey commented 2 years ago

If you look at our pipeline you will see that we pass additional build args. Specifically, for focal, XFCE needs to be started by the Kasm script as it does not start automatically. That is controlled with the build arg START_XFCE=1.

https://github.com/kasmtech/workspaces-core-images/blob/d1a5326ed7d3af719b4fb165e0a1522936784291/.gitlab-ci.yml#L51

shkpk commented 2 years ago

Thanks, it worked.