{"id":2812,"date":"2020-02-29T16:42:01","date_gmt":"2020-02-29T11:12:01","guid":{"rendered":"https:\/\/www.24x7serversupport.com\/blog\/?p=2812"},"modified":"2020-03-13T21:16:03","modified_gmt":"2020-03-13T15:46:03","slug":"how-to-install-and-configure-vnc-server-on-centos-8-rhel-8","status":"publish","type":"post","link":"https:\/\/www.24x7serversupport.com\/blog\/how-to-install-and-configure-vnc-server-on-centos-8-rhel-8\/","title":{"rendered":"How to Install and Configure VNC Server on Centos 8 \/ RHEL 8"},"content":{"rendered":"\n<p>A&nbsp;<strong>VNC<\/strong>&nbsp;(Virtual Network Computing) Server is a GUI based desktop sharing platform that allows you to access remote desktop machines. In&nbsp;<strong>Centos 8<\/strong>&nbsp;and&nbsp;<strong>RHEL 8<\/strong>&nbsp;systems, VNC servers are not installed by default and need to be installed manually. In this article, we\u2019ll look at how to install VNC Server on CentOS 8 \/ RHEL 8 systems with a simple step-by-step installation guide.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Prerequisites to Install VNC Server on Centos 8 \/ RHEL 8<\/h4>\n\n\n\n<p>To install VNC Server in your system, make sure you have the following requirements readily available on your system:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>CentOS 8 \/ RHEL 8<\/li><li>GNOME Desktop Environment<\/li><li>Root access<\/li><li>DNF \/ YUM Package repositories<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Step by Step Guide to Install VNC Server on Centos 8 \/ RHEL 8<\/h4>\n\n\n\n<h4 class=\"wp-block-heading\">Step 1)&nbsp; Install GNOME Desktop environment<\/h4>\n\n\n\n<p>Before installing VNC Server in your CentOS 8 \/ RHEL 8, make sure you have a desktop Environment (DE) installed. In case GNOME desktop is already installed or you have installed your server with gui option then you can skip this step.<\/p>\n\n\n\n<p>In CentOS 8 \/ RHEL 8, GNOME is the default desktop environment. if you don\u2019t have it in your system, install it using the following command:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@~]# dnf groupinstall \"workstation\"\nOr\n<\/pre>\n\n\n\n<p># dnf groupinstall &#8220;Server with GUI<\/p>\n\n\n\n<p>Once the above packages are installed successfully then run the following command to enable the graphical mode<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@~]# systemctl set-default graphical<\/pre>\n\n\n\n<p>Now reboot the system so that we get GNOME login screen.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@~]# reboot<\/pre>\n\n\n\n<p>Once the system is rebooted successfully uncomment the line \u201c<strong>WaylandEnable=false<\/strong>\u201d from the file \u201c<strong>\/etc\/gdm\/custom.conf<\/strong>\u201d so that remote desktop session request via vnc is handled by xorg of GNOME desktop in place of wayland display manager.<\/p>\n\n\n\n<p><strong>Note:<\/strong>&nbsp;Wayland is the default display manager (GDM) in GNOME and it not is configured to handled remote rendering API like X.org<\/p>\n\n\n\n<p>VNC server will not work properly if SElinux is enabled on your system, as of now work around is to disable it using following commands,<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@~]# setenforce 0\n<\/pre>\n\n\n\n<p># sed -i \u2013follow-symlinks &#8216;s\/SELINUX=enforcing\/SELINUX=disabled\/g&#8217; \/etc\/sysconfig\/selinux<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Step 2) Install VNC Server (tigervnc-server)<\/h4>\n\n\n\n<p>Next we\u2019ll install the VNC Server, there are lot of VNC Servers available, and for installation purposes, we\u2019ll be installing&nbsp;<strong>TigerVNC Server<\/strong>. It is one of the most popular VNC Server and a high-performance and platform-independent VNC that allows users to interact with remote machines easily.<\/p>\n\n\n\n<p>Now install TigerVNC Server using the following command:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@~]# dnf install tigervnc-server tigervnc-server-module -y<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\">Step 3) Set VNC Password for Local User<\/h4>\n\n\n\n<p>Let\u2019s assume we want \u2018support\u2019 user to use VNC for remote desktop session, then switch to the user and set its password using vncpasswd command,<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@~]# su - support\n<\/pre>\n\n\n\n<p>$ vncpasswd\nPassword:\nVerify:\nWould you like to enter a view-only password (y\/n)? n\nA view-only password is not used\n<\/p>\n\n\n\n<p>$\n<\/p>\n\n\n\n<p>$ exit\nlogout\n<\/p>\n\n\n\n<p>#<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Step 4) Setup VNC Server Configuration File<\/h4>\n\n\n\n<p>Next step is to configure VNC Server Configuration file. Create a file \u201c<strong>\/etc\/systemd\/system\/vncserver@.service<\/strong>\u201d with the following content so that tigervnc-server\u2019s service started for above local user \u201csupport\u201d.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@~]# vim \/etc\/systemd\/system\/vncserver@.service\n[Unit]\nDescription=Remote Desktop VNC Service\nAfter=syslog.target network.target\n\n[Service]\nType=forking\nWorkingDirectory=\/home\/support \nUser=support \nGroup=support \n\nExecStartPre=\/bin\/sh -c '\/usr\/bin\/vncserver -kill %i > \/dev\/null 2>&amp;1 || :'\nExecStart=\/usr\/bin\/vncserver -autokill %i\nExecStop=\/usr\/bin\/vncserver -kill %i\n\n[Install]\nWantedBy=multi-user.target<\/pre>\n\n\n\n<p>Save and exit the file,<\/p>\n\n\n\n<p><strong>Note:&nbsp;<\/strong>Replace the user name in above file which suits to your setup.<\/p>\n\n\n\n<p>By default, VNC server listen on tcp port 5900+n, where n is the display number, if the display number is \u201c1\u201d then VNC server will listen its request on TCP port 5901.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Step 5) Start VNC Service and allow port in firewall<\/h4>\n\n\n\n<p>I am using display number as 1, so use the following commands to start and enable vnc service on display number \u201c1\u201d,<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@~]# systemctl daemon-reload\n<\/pre>\n\n\n\n<p># systemctl start&nbsp; vncserver@:1.service\n<\/p>\n\n\n\n<p># systemctl enable&nbsp; vncserver@:1.service\nCreated symlink \/etc\/systemd\/system\/multi-user.target.wants\/vncserver@:1.service \u2192 \/etc\/systemd\/system\/vncserver@.service.\n<\/p>\n\n\n\n<p>#<\/p>\n\n\n\n<p>Use below&nbsp;<strong>netstat<\/strong>&nbsp;or&nbsp;<strong>ss<\/strong>&nbsp;command to verify whether VNC server start listening its request on 5901,<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@~]# netstat -tunlp | grep 5901\ntcp\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 0 0.0.0.0:5901\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0.0.0.0:*\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 LISTEN\u00a0\u00a0\u00a0\u00a0\u00a0 8169\/Xvnc\ntcp6\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0 0 :::5901\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 :::*\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 LISTEN\u00a0\u00a0\u00a0\u00a0\u00a0 8169\/Xvnc\n<\/pre>\n\n\n\n<p># ss -tunlp | grep -i 5901\ntcp&nbsp;&nbsp; LISTEN&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0.0.0.0:5901&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0.0.0.0:*&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; users:((&#8220;Xvnc&#8221;,pid=8169,fd=6))&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\ntcp&nbsp;&nbsp; LISTEN&nbsp; 0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [::]:5901&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; [::]:*&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;users:((&#8220;Xvnc&#8221;,pid=8169,fd=7))&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\n<\/p>\n\n\n\n<p>#<\/p>\n\n\n\n<p>Use below systemctl command to verify the status of VNC server,<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@~]# systemctl status vncserver@:1.service<\/pre>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.linuxtechi.com\/wp-content\/uploads\/2019\/10\/vncserver-status-centos8-rhel8-1024x511.jpg?resize=640%2C319&#038;ssl=1\" alt=\"vncserver-status-centos8-rhel8\" class=\"wp-image-9001\" data-recalc-dims=\"1\"\/><\/figure>\n\n\n\n<p>Above command\u2019s output confirms that VNC is started successfully on port tcp port 5901. Use the following command allow VNC Server port \u201c5901\u201d in os firewall,<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@~]# firewall-cmd --permanent --add-port=5901\/tcp\nsuccess\n<\/pre>\n\n\n\n<p># firewall-cmd &#8211;reload\nsuccess\n<\/p>\n\n\n\n<p>#<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Step 6) Connect to Remote Desktop Session<\/h4>\n\n\n\n<p>Now we are all set to see if the remote desktop connection is working. To access the remote desktop, Start the VNC Viewer from your Windows&nbsp; \/ Linux workstation and enter your&nbsp;<strong>VNC server IP Address<\/strong>&nbsp;and&nbsp;<strong>Port Number<\/strong>&nbsp;and then hit enter<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A&nbsp;VNC&nbsp;(Virtual Network Computing) Server is a GUI based desktop sharing platform that allows you to access remote desktop machines. In&nbsp;Centos 8&nbsp;and&nbsp;RHEL 8&nbsp;systems, VNC servers are not installed by default and need to be installed manually. In this article, we\u2019ll look at how to install VNC Server on CentOS 8 \/ RHEL 8 systems with a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[30,1],"tags":[],"class_list":["post-2812","post","type-post","status-publish","format-standard","hentry","category-centos","category-uncategorized"],"jetpack_publicize_connections":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Install and Configure VNC Server on Centos 8 \/ RHEL 8 | 24x7serversupport Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.24x7serversupport.com\/blog\/how-to-install-and-configure-vnc-server-on-centos-8-rhel-8\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Install and Configure VNC Server on Centos 8 \/ RHEL 8 | 24x7serversupport Blog\" \/>\n<meta property=\"og:description\" content=\"A&nbsp;VNC&nbsp;(Virtual Network Computing) Server is a GUI based desktop sharing platform that allows you to access remote desktop machines. 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In&nbsp;Centos 8&nbsp;and&nbsp;RHEL 8&nbsp;systems, VNC servers are not installed by default and need to be installed manually. 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