On 05/29/2012 12:00 PM, Tommy Pham wrote:
On Tue, May 29, 2012 at 11:18 AM, Rick Stevens<ricks@xxxxxxxxxxxxxx> wrote:
On 05/29/2012 10:26 AM, Tommy Pham wrote:
Hi,
Is it possible to have remote access via VNC without having the user
to be logged in (automatically, especially on a system reboot)?
You could share the display in the X configs, e.g.:
cat /etc/X11/xorg.conf.d/00-system-setup-vnc.conf
# This file is to share the root screen via VNC
Section "Module"
  Load "vnc"
EndSection
Section "Screen"
  Identifier "Screen0"
  Device "Videocard0"
  Option "SecurityTypes" "VncAuth"
  Option "UserPasswdVerifier" "VncAuth"
  Option "passwordfile" "/root/.vnc/passwd"
EndSection
You may have to refresh the display after connecting when the user
login screen is shown. I have to on occasion...something with the
way the login mechanism (gdmgreeter?) updates the screen.
Hi Rick,
I just tried it why your suggested configuration but I'm still unable
to access via VNC.
[root@fedora17 ~]# find / -type f -name 'passwd'
/sys/fs/selinux/class/passwd/perms/passwd
find: `/run/user/dlp/gvfs': Permission denied
/usr/share/bash-completion/completions/passwd
/usr/bin/passwd
/etc/pam.d/passwd
/etc/passwd
I've rebooted the system with no effect.
If you look, you'll see that I used a password file, /root/.vnc/passwd
to hold the VNC passwords. You must create that file using "vncpasswd"
on the VNC server and give the root user a password. When you
authenticate VNC, you must give the root user's VNC password.
You don't need to use the authentication, I guess (I always do). I also
believe that, for selinux to like it, you have to change the SELinux
context of the file:
[root@golem4 .vnc]# ls -lZ /root/.vnc/passwd
-rw-------. root root unconfined_u:object_r:admin_home_t:s0
/root/.vnc/passwd
To access the machines, I have been using vncviewer over an SSH tunnel:
# vpnc -via golem4 golem4
I get a dialog box asking for root's VNC password. I put it in and the
desktop shows up.
You probably want to look at the /var/log/Xorg.0.log file on the VNC
server machine to verify that the vnc module is actually being loaded.
----------------------------------------------------------------------
- Rick Stevens, Systems Engineer, AllDigital ricks@xxxxxxxxxxxxxx -
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