TigerVNC on RHEL7/Centos7

10月 2nd, 2014,由 frank撰写

Install TigerVNC

[root@trex-161 ~]# yum install xterm xorg-x11-xinit
[root@trex-161 ~]# yum -y install tigervnc tigervnc-server
[root@trex-161 ~]# systemctl disable firewalld.service
[root@trex-161 ~]# systemctl stop firewalld.service
[root@trex-161 ~]# cp /lib/systemd/system/vncserver@.service /etc/systemd/system/vncserver@:1.service
[root@trex-161 ~]# vncpasswd
Password:
Verify:
Would you like to enter a view-only password (y/n)? n
A view-only password is not used

Enable TigerVNC – Way1

ps: follow content of ”vncserver@.service“ had changed

[root@trex-161 ~]# vim /etc/systemd/system/vncserver@:1.service 
ExecStart=/sbin/runuser -l root -c "/usr/bin/vncserver %i -geometry 1024x768"
PIDFile=/home/root/.vnc/%H%i.pid

[root@frank rc.d]# chmod 777 rc.local
[root@frank rc.d]# vim rc.local 
/sbin/runuser -l root -c /usr/bin/vncserver :1

Enable TigerVNC – Way2

Run vncserver and auto create “xstartup”:

[root@trex-161 ~]# vncserver

You will require a password to access your desktops.

Password:
Verify:
Would you like to enter a view-only password (y/n)? n
A view-only password is not used
xauth:  file /root/.Xauthority does not exist

New 'trex-161:1 (root)' desktop is trex-161:1

Creating default startup script /root/.vnc/xstartup
Creating default config /root/.vnc/config
Starting applications specified in /root/.vnc/xstartup
Log file is /root/.vnc/trex-161:1.log

Replace “xstartup” content with follow:

#!/bin/sh

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
  [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
  vncconfig -iconic &
  dbus-launch --exit-with-session gnome-session &

Keep the original file content of ”/etc/systemd/system/vncserver@:1.service“, just replace “user”:

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

[Service]
Type=simple

# Clean any existing files in /tmp/.X11-unix environment
ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
ExecStart=/usr/bin/vncserver_wrapper root %i
ExecStop=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'

[Install]
WantedBy=multi-user.target

Enable and start vncserver by systemctl:

[root@trex-161 ~]# systemctl daemon-reload
[root@trex-161 ~]# systemctl enable vncserver@:1.service
Created symlink from /etc/systemd/system/multi-user.target.wants/vncserver@:1.service to /etc/systemd/system/vncserver@:1.service.
[root@trex-161 ~]#
[root@trex-161 ~]# systemctl start vncserver@:1.service

Check vnc status:

[root@trex-161 ~]# ps -ef | grep vnc
root     10814     1  0 02:50 pts/0    00:00:00 /usr/bin/Xvnc :1 -auth /root/.Xauthority -desktop trex-161:1 (root) -fp catalogue:/etc/X11/fontpath.d -geometry 1024x768 -pn -rfbauth /root/.vnc/passwd -rfbport 5901 -rfbwait 30000
root     10825     1  0 02:50 pts/0    00:00:00 /bin/sh /root/.vnc/xstartup
root     13158  6681  0 02:58 pts/0    00:00:00 grep --color=auto vnc
[root@trex-161 ~]# 
[root@trex-161 ~]# netstat -an | grep :590
tcp        0      0 0.0.0.0:5901            0.0.0.0:*               LISTEN  
tcp6       0      0 :::5901                 :::*                    LISTEN

Check status by systemctl, that maybe report failed, that mean already running as :1, you need to kill the old vnc process first, then start:

[root@trex-161 ~]# systemctl status vncserver@1.service
● vncserver@1.service - Remote desktop service (VNC)
   Loaded: loaded (/usr/lib/systemd/system/vncserver@.service; disabled; vendor preset: disabled)
   Active: inactive (dead)
[root@trex-161 ~]# 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 Tue 2021-08-31 02:58:20 CST; 50min ago
  Process: 13051 ExecStart=/usr/bin/vncserver_wrapper root %i (code=exited, status=2)
  Process: 13044 ExecStartPre=/bin/sh -c /usr/bin/vncserver -kill %i > /dev/null 2>&1 || : (code=exited, status=0/SUCCESS)
 Main PID: 13051 (code=exited, status=2)

Aug 31 02:58:20 trex-161 systemd[1]: Starting Remote desktop service (VNC)...
Aug 31 02:58:20 trex-161 systemd[1]: Started Remote desktop service (VNC).
Aug 31 02:58:20 trex-161 vncserver_wrapper[13051]: A VNC server is already running as :1
Aug 31 02:58:20 trex-161 vncserver_wrapper[13051]: FATAL: 'runuser -l root' failed!
Aug 31 02:58:20 trex-161 systemd[1]: vncserver@:1.service: main process exited, code=exited, status=2...UMENT
Aug 31 02:58:20 trex-161 systemd[1]: Unit vncserver@:1.service entered failed state.
Aug 31 02:58:20 trex-161 systemd[1]: vncserver@:1.service failed.
Hint: Some lines were ellipsized, use -l to show in full.

Some time, that maybe report follow alarm:

[root@trex-161 ~]# systemctl status vncserver@1.service
● vncserver@1.service - Remote desktop service (VNC)
   Loaded: loaded (/usr/lib/systemd/system/vncserver@.service; disabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Tue 2021-09-07 03:07:04 CST; 7min ago
  Process: 8837 ExecStart=/usr/bin/vncserver_wrapper <USER> %i (code=exited, status=2)
  Process: 8831 ExecStartPre=/bin/sh -c /usr/bin/vncserver -kill %i > /dev/null 2>&1 || : (code=exited, status=0/SUCCESS)
 Main PID: 8837 (code=exited, status=2)

Sep 07 03:07:04 trex-161 systemd[1]: Starting Remote desktop service (VNC)...
Sep 07 03:07:04 trex-161 systemd[1]: Started Remote desktop service (VNC).
Sep 07 03:07:04 trex-161 vncserver_wrapper[8837]: runuser: user <USER> does not exist
Sep 07 03:07:04 trex-161 vncserver_wrapper[8837]: FATAL: 'runuser -l <USER>' failed!
Sep 07 03:07:04 trex-161 systemd[1]: vncserver@1.service: main process exited, code=exited, status=2/INVALIDARGUMENT
Sep 07 03:07:04 trex-161 systemd[1]: Unit vncserver@1.service entered failed state.
Sep 07 03:07:04 trex-161 systemd[1]: vncserver@1.service failed.

You need to delete garbage file by follow cmd first, then start again:

[root@trex-161 ~]# cd /tmp
[root@trex-161 tmp]# rm -rf .X*
[root@trex-161 tmp]# 
[root@trex-161 tmp]# systemctl start vncserver@:1.service
[root@trex-161 tmp]# 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: active (running) since Tue 2021-09-07 03:18:02 CST; 5s ago
  Process: 9488 ExecStartPre=/bin/sh -c /usr/bin/vncserver -kill %i > /dev/null 2>&1 || : (code=exited, status=0/SUCCESS)
 Main PID: 9492 (vncserver_wrapp)
   CGroup: /system.slice/system-vncserver.slice/vncserver@:1.service
           ├─ 9492 /bin/sh /usr/bin/vncserver_wrapper root :1
           └─10123 sleep 0.1

Sep 07 03:18:02 trex-161 systemd[1]: Starting Remote desktop service (VNC)...
Sep 07 03:18:02 trex-161 systemd[1]: Started Remote desktop service (VNC).
Sep 07 03:18:05 trex-161 vncserver_wrapper[9492]: New 'trex-161:1 (root)' desktop is trex-161:1
Sep 07 03:18:05 trex-161 vncserver_wrapper[9492]: Starting applications specified in /root/.vnc/xstartup
Sep 07 03:18:05 trex-161 vncserver_wrapper[9492]: Log file is /root/.vnc/trex-161:1.log

Multi-user VNC Server – 2021.8 Updated

Set up another user who have limited privilege, only access own home directory:

[root@trex-161 ~]# useradd -d /home/frank -m frank
[root@trex-161 ~]# passwd frank
[root@trex-161 ~]# chown frank -R /home/frank
[root@trex-161 ~]# su - frank
[frank@trex-161 ~]$ cd /opt
[frank@trex-161 opt]$ mkdir test
mkdir: cannot create directory ‘test’: Permission denied
[frank@trex-161 opt]$ cd ~
[frank@trex-161 ~]$ mkdir test
[frank@trex-161 ~]$ rm -rf test

Copy 2nd vncserver profile for user “frank”:

[frank@trex-161 ~]$ vncpasswd
Password:
Verify:
Would you like to enter a view-only password (y/n)? n
A view-only password is not used
[frank@trex-161 ~]$ 
[root@trex-161 ~]# cp /lib/systemd/system/vncserver@.service /etc/systemd/system/vncserver@:2.service
[root@trex-161 ~]# more /etc/systemd/system/vncserver@:2.service

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

[Service]
Type=simple

# Clean any existing files in /tmp/.X11-unix environment
ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
ExecStart=/usr/bin/vncserver_wrapper frank %i
ExecStop=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'

[Install]
WantedBy=multi-user.target

Create “xstartup” and replace content for “frank”:

[frank@trex-161 ~]$ vncserver
xauth:  file /home/frank/.Xauthority does not exist

New 'trex-161:2 (frank)' desktop is trex-161:2

Creating default startup script /home/frank/.vnc/xstartup
Creating default config /home/frank/.vnc/config
Starting applications specified in /home/frank/.vnc/xstartup
Log file is /home/frank/.vnc/trex-161:2.log

[frank@trex-161 ~]$ more .vnc/xstartup 
#!/bin/sh

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
  [ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
  vncconfig -iconic &
  dbus-launch --exit-with-session gnome-session &

Enable and start vncserver by systemctl:

[root@trex-161 ~]# systemctl daemon-reload
[root@trex-161 ~]# systemctl enable vncserver@:2.service
Created symlink from /etc/systemd/system/multi-user.target.wants/vncserver@:2.service to /etc/systemd/system/vncserver@:2.service.
[root@trex-161 ~]# 
[root@trex-161 ~]# systemctl start vncserver@:2.service
[root@trex-161 ~]# ps -ef | grep vnc
root     10814     1  0 02:50 pts/0    00:00:00 /usr/bin/Xvnc :1 -auth /root/.Xauthority -desktop trex-161:1 (root) -fp catalogue:/etc/X11/fontpath.d -geometry 1024x768 -pn -rfbauth /root/.vnc/passwd -rfbport 5901 -rfbwait 30000
root     10825     1  0 02:50 pts/0    00:00:00 /bin/sh /root/.vnc/xstartup
frank    11742     1  0 02:55 pts/0    00:00:00 /bin/Xvnc :2 -auth /home/frank/.Xauthority -desktop trex-161:2 (frank) -fp catalogue:/etc/X11/fontpath.d -geometry 1024x768 -pn -rfbauth /home/frank/.vnc/passwd -rfbport 5902 -rfbwait 30000
frank    11753     1  0 02:55 pts/0    00:00:00 /bin/sh /home/frank/.vnc/xstartup
root     13158  6681  0 02:58 pts/0    00:00:00 grep --color=auto vnc
[root@trex-161 ~]# 
[root@trex-161 ~]# netstat -an | grep  :590
tcp        0      0 0.0.0.0:5901            0.0.0.0:*               LISTEN     
tcp        0      0 0.0.0.0:5902            0.0.0.0:*               LISTEN     
tcp6       0      0 :::5901                 :::*                    LISTEN     
tcp6       0      0 :::5902                 :::*                    LISTEN

Checking VNC for “root” and “frank” at same time:

Wrong JPEG library version – 2021.9 Updated

Server is Centos 7.9, after deployed tigervnc server by above procedure, vnc success enable:

[root@trex-core opt]# cat /etc/redhat-release
CentOS Linux release 7.9.2009 (Core)
[root@trex-core ~]# 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: active (running) since Sun 2021-09-12 00:58:43 EDT; 43s ago
  Process: 2516 ExecStartPre=/bin/sh -c /usr/bin/vncserver -kill %i > /dev/null 2>&1 || : (code=exited, status=0/SUCCESS)
 Main PID: 2547 (vncserver_wrapp)
   CGroup: /system.slice/system-vncserver.slice/vncserver@:1.service
           ├─2547 /bin/sh /usr/bin/vncserver_wrapper root :1
           └─4833 sleep 5

Sep 12 00:58:42 trex-core systemd[1]: Starting Remote desktop service (VNC)...
Sep 12 00:58:43 trex-core systemd[1]: Started Remote desktop service (VNC).
Sep 12 00:58:46 trex-core vncserver_wrapper[2547]: New 'trex-core:1 (root)' desktop is trex-core:1
Sep 12 00:58:46 trex-core vncserver_wrapper[2547]: Starting applications specified in /root/.vnc/xstartup
Sep 12 00:58:46 trex-core vncserver_wrapper[2547]: Log file is /root/.vnc/trex-core:1.log
Sep 12 00:58:51 trex-core vncserver_wrapper[2547]: 'vncserver :1' has PID 2757, waiting until it exits ...

But have follow alarms by TigerVNC Viewer 1.11.90/win:

“Exception on worker thread: Wrong JPEG library version: library is 90, caller expects 62”

Easy fixed by disable “JPEG compression”; If must enable the function on client, need to downgrade jpegsrc version, can reference the link: https://ccie.lol/knowledge-base/linux-centos-install-graphicsmagick/, but I didn’t try.

Change VNC Port – 2021.6 Updated

Due to only have 8080 port can be accessed on CentOS, so need to change default port 5900. (tigervnc-1.8.0-22.el7.x86_64)

Follow info before modified:

[root@localhost ~]# grep "59" /usr/bin/vncserver -n
21:#  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
188:$vncPort = 5900 + $displayNumber;
500:# n is taken if something is listening on the VNC server port (5900+n) or the
519:# (5900+n) or the X server port (6000+n).
536:    if (!bind(S, pack('S n x12', $AF_INET, 5900 + $n))) {

Follow info after modified:

[root@localhost ~]# grep "80" /usr/bin/vncserver -n
188:$vncPort = 8078 + $displayNumber;
536:    if (!bind(S, pack('S n x12', $AF_INET, 8078 + $n))) {

After restart:

[root@localhost ~]# netstat -ntpl|grep vnc
tcp        0      0 0.0.0.0:5802            0.0.0.0:*               LISTEN      2992/Xvnc
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN      2992/Xvnc
tcp        0      0 0.0.0.0:6002            0.0.0.0:*               LISTEN      2992/Xvnc
tcp6       0      0 :::5802                 :::*                    LISTEN      2992/Xvnc
tcp6       0      0 :::8080                 :::*                    LISTEN      2992/Xvnc
tcp6       0      0 :::6002                 :::*                    LISTEN      2992/Xvnc

Reference

Multi-user VNC setup on RHEL 7.5

本文出自 Frank's Blog

本文链接：TigerVNC on RHEL7/Centos7
版权声明：本文为原创文章，仅代表个人观点，版权归 Frank Zhao 所有，转载时请注明本文出处及文章链接

Linux RHEL

你可以留言,或者trackback 从你的网站

How to Install EPEL on RHEL7«

»Python Classes 类的概念

留言哦

返回顶端

『无题』

I persist, therefore I am!!!

Useful Link

1. IANA - AFI
2. IANA - SAFI
3. IANA - BGP Ex Comm
4. RPM pbone.net
5. Linux Packages Search
Useful Toots

Linux/http server:

python -m SimpleHTTPServer <port>

python -m http.server <port>

PS: only one thread, if require more threads, can replace by “caddy”.

Win10/http server:

http://www.rejetto.com/hfs/

Win10/md5:

certutil -hashfile .\xxxx MD5
TAG Cloud

7600 AAA ARP ASR9k BGP BGP Design BLOG CEF DYNAMIPS EEM EIGRP ESXI EVPN HSRP IOX IP SLA IPV6 ISDN IXIA JAVA L2TP L2VPN Linux Macos MPLS Multicast NCS5500 OSPF PHONE Python QOS RHEL S-CRT SDN SRTE STP TCL UBUNTU Upgrade VLAN VPLS WINDOWS WIRESHARK XR Yang
WP Cumulus Flash tag cloud by Roy Tanck requires Flash Player 9 or better.
Recent Comments
- 正在加载...
功能
Memo

Perseverance sometimes equals genius!

There are only two creatures in the world who can surmount the pyramid:

—–the eagle and the snail.
分类
- CCDE (16)
- CCIE SEC (4)
- CCIE SP (55)
- CCIE VOICE (3)
- Classical CASE (26)
- Linux (61)
- Mobile Phone (4)
- Programmer (43)
- Solution (2)
- Uncategorized (9)
- Windows常用技术 (9)
- 似水流年 (15)
- 学习笔记 (170)
- 常用资料 (43)
- 网络技术 (34)
近期文章

TigerVNC on RHEL7/Centos7

Install TigerVNC

Enable TigerVNC – Way1

Enable TigerVNC – Way2

Multi-user VNC Server – 2021.8 Updated

Wrong JPEG library version – 2021.9 Updated

Change VNC Port – 2021.6 Updated

Reference

留言哦

『无题』

Useful Link

Useful Toots

TAG Cloud

Recent Comments

功能

Memo

分类

近期文章