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Installing the graphical interface on CentOS

Buy a server, for example, robt11 with the Centos 7 operating system. Enter any name and click the Create button. In less than 10 seconds your server will be ready and you will see it on the right in the server list:

Then you can do all the actions in the browser console of the server, but you cannot copy information into it, so for convenience we download putty.org and connect to our server via SSH:

1. Enter the username and password.
2. When you first log in for security, the server will ask you to change the current password, enter the current password first.
3. Enter the new password with confirmation.

Install the graphical shell with the command and press Enter on the keyboard:

yum -y groupinstall kde-desktop

We restart the server with the command:

reboot

Connect to the server again via Putty and enter the command to install the program, which is necessary to connect to the installed graphical interface:

sudo yum install -y tigervnc-server

Next, configure the tigervnc-server. We copy settings:

sudo cp /lib/systemd/system/vncserver@.service /etc/systemd/system/vncserver@:1.service

Editing Settings:

sudo vi /etc/systemd/system/vncserver@:1.service

After opening the file, press the i button and change the file, in order to save the file, press Shift +: (colon on the keyboard) and enter the command: wq

Instead of USER (along with quotes) we just insert root:

Execute commands:

sudo systemctl daemon-reload
sudo systemctl enable vncserver@:1.service
sudo firewall-cmd --permanent --zone=public --add-port=5904/tcp
sudo firewall-cmd --reload
vncserver

1. We create a password for connecting to a remote graphical interface.
2. Type n and press Enter.

Execute commands:

sudo systemctl daemon-reload
sudo systemctl restart vncserver@:1.service

Download the program to connect to the graphical interface realvnc.com:

Connect to GUI:

If you have difficulty connecting to the graphical interface, run the command in the console:

sudo rm -i /tmp/.X11-unix/X4

Quick installation of the Firefox browser from the console:

yum -y install firefox

Change screen resolution:

Application search:

To install Java, run the commands in the console:

yum -y install wget
cd /opt/
wget --no-cookies --no-check-certificate --header "Cookie: " "https://robts.ru/assets/files/jdk-8u211-linux-x64.tar.gz"
tar xzf jdk-8u211-linux-x64.tar.gz
cd jdk1.8.0_211/
alternatives --install /usr/bin/java java /opt/jdk1.8.0_211/bin/java 2
alternatives --config java
alternatives --install /usr/bin/jar jar /opt/jdk1.8.0_211/bin/jar 2
alternatives --install /usr/bin/javac javac /opt/jdk1.8.0_211/bin/javac 2
alternatives --set jar /opt/jdk1.8.0_211/bin/jar
alternatives --set javac /opt/jdk1.8.0_211/bin/javac
java -version
export JAVA_HOME=/opt/jdk1.8.0_211
export JRE_HOME=/opt/jdk1.8.0_211/jre
export PATH=$PATH:/opt/jdk1.8.0_211/bin:/opt/jdk1.8.0_211/jre/bin