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El inicio del servicio del servidor TigerVNC falla

tag-icon • tag-icon vnc centos-7 tigervnc
El inicio del servicio del servidor TigerVNC falla

Intentando instalar TigerVNC para acceso remoto al escritorio (como root) en una máquina centos7, segúnesteartículo. Tener las siguientes configuraciones

[root@HW01 ~]# cat /etc/systemd/system/vncserver@:1.service
# The vncserver service unit file
#
# Quick HowTo:
# 1. Copy this file to /etc/systemd/system/[email protected]
# 2. Replace <USER> with the actual user name and edit vncserver
#    parameters appropriately
#    (ExecStart=/usr/sbin/runuser -l <USER> -c "/usr/bin/vncserver %i"
#     PIDFile=/home/<USER>/.vnc/%H%i.pid)
# 3. Run `systemctl daemon-reload`
# 4. Run `systemctl enable vncserver@:<display>.service`
#
# DO NOT RUN THIS SERVICE if your local area network is
# untrusted!  For a secure way of using VNC, you should
# limit connections to the local host and then tunnel from
# the machine you want to view VNC on (host A) to the machine
# whose VNC output you want to view (host B)
#
# [user@hostA ~]$ ssh -v -C -L 590N:localhost:590M hostB
#
# this will open a connection on port 590N of your hostA to hostB's port 590M
# (in fact, it ssh-connects to hostB and then connects to localhost (on hostB).
# See the ssh man page for details on port forwarding)
#
# You can then point a VNC client on hostA at vncdisplay N of localhost and with
# the help of ssh, you end up seeing what hostB makes available on port 590M
#
# Use "-nolisten tcp" to prevent X connections to your VNC server via TCP.
#
# Use "-localhost" to prevent remote VNC clients connecting except when
# doing so through a secure tunnel.  See the "-via" option in the
# `man vncviewer' manual page.


[Unit]
Description=Remote desktop service (VNC)
After=syslog.target network.target

[Service]
Type=forking

# Clean any existing files in /tmp/.X11-unix environment
ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
ExecStart=/usr/sbin/runuser -l root -c "/usr/bin/vncserver %i"
PIDFile=/root/.vnc/%H%i.pid
ExecStop=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'

[Install]
WantedBy=multi-user.target

hizo...

[root@HW01 ~]# vncpasswd
Password:
Password not changed
[root@HW01 ~]#

para confirmar que no hay contraseña para root, pero recibo los siguientes errores...

[root@HW01 ~]# systemctl start vncserver@:1.service
Job for vncserver@:1.service failed because the control process exited with error code. See "systemctl status vncserver@:1.service" and "journalctl -xe" for details.
[root@HW01 ~]# systemctl status vncserver@:1.service
● vncserver@:1.service - Remote desktop service (VNC)
   Loaded: loaded (/etc/systemd/system/vncserver@:1.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Fri 2019-07-19 16:03:11 HST; 14s ago
  Process: 72135 ExecStart=/usr/sbin/runuser -l root -c /usr/bin/vncserver %i (code=exited, status=1/FAILURE)
  Process: 72129 ExecStartPre=/bin/sh -c /usr/bin/vncserver -kill %i > /dev/null 2>&1 || : (code=exited, status=0/SUCCESS)

Jul 19 16:03:11 HW01.ucera.local systemd[1]: Starting Remote desktop service (VNC)...
Jul 19 16:03:11 HW01.co.local runuser[72135]: Password:
Jul 19 16:03:11 HW01.co.local systemd[1]: vncserver@:1.service: control process exited, cod...s=1
Jul 19 16:03:11 HW01.co.local systemd[1]: Failed to start Remote desktop service (VNC).
Jul 19 16:03:11 HW01.co.local systemd[1]: Unit vncserver@:1.service entered failed state.
Jul 19 16:03:11 HW01.co.local systemd[1]: vncserver@:1.service failed.
Hint: Some lines were ellipsized, use -l to show in full.

¿Alguien sabe qué podría estar saliendo mal aquí? ¿Alguna sugerencia de depuración?

Respuesta1

Basado en una publicación en RHEL7forosy el artículo vinculado anteriormente, el problema parece ser que no restablecí la vncpasswd para el usuario (no había hecho esto antes intencionalmente ya que quería mantener la contraseña vacía (parece que esto no es posible o que no entiendo bien cuál es la contraseña). vncpasswd realmente está funcionando)). Entonces haciendo esto...

ingrese la descripción de la imagen aquí

... del artículo antes de iniciar el servicio ayudó a solucionar el problema.

[root@HW04 ~]# vncpasswd
Password:
Verify:
Would you like to enter a view-only password (y/n)? n
A view-only password is not used
[root@HW04 ~]# systemctl start vncserver@:1.service
[root@HW04 ~]# systemctl status vncserver@:1.service
● vncserver@:1.service - Remote desktop service (VNC)
   Loaded: loaded (/etc/systemd/system/vncserver@:1.service; enabled; vendor preset: disabled)
   Active: inactive (dead) since Mon 2019-07-22 12:39:17 HST; 5min ago
  Process: 2170 ExecStop=/bin/sh -c /usr/bin/vncserver -kill %i > /dev/null 2>&1 || : (code=exited, status=0/SUCCESS)
  Process: 2125 ExecStart=/usr/sbin/runuser -l root -c /usr/bin/vncserver %i (code=exited, status=0/SUCCESS)
  Process: 2122 ExecStartPre=/bin/sh -c /usr/bin/vncserver -kill %i > /dev/null 2>&1 || : (code=exited, status=0/SUCCESS)
 Main PID: 2143 (code=exited, status=0/SUCCESS)

Jul 22 12:39:09 HW04.co.local systemd[1]: Starting Remote desktop service (VNC)...
Jul 22 12:39:17 HW04.co.local systemd[1]: Started Remote desktop service (VNC).

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