There are two main ways to install NVIDIA graphics drivers for CentOS 7:

1. Installed through the EPEL
2. Installed through the NVIDIA official installation package

I first tried install through the EPEL warehouse. Although there was no problem during the installation process, the NVIDIA driver did not take effect, and it has not been successful although I tried different methods. Finally, through the second: NVIDIA official installation package installed successfully!

CentOS 7 Installing NVIDIA Graphics Driver

Shield nouveau driver

Nouveau is a display driver that comes with the system and needs to be disabled before proceeding to the next step.
uncomment nvidiafb in /lib/modprobe.d/dist-blacklist.conf :

#blacklist nvidiafb

Then add the configuration in the next line:

blacklist nouveau  
options nouveau modeset=0 

Finally the whole file looks like this:

[root@test ]# vi /lib/modprobe.d/dist-blacklist.conf 

#
# Listing a module here prevents the hotplug scripts from loading it.
# Usually that'd be so that some other driver will bind it instead,
# no matter which driver happens to get probed first.  Sometimes user
# mode tools can also control driver binding.
#
# Syntax: see modprobe.conf(5).
#

# watchdog drivers
blacklist i8xx_tco

# framebuffer drivers
blacklist aty128fb
blacklist atyfb
blacklist radeonfb
blacklist i810fb
blacklist cirrusfb
blacklist intelfb
blacklist kyrofb
blacklist i2c-matroxfb
blacklist hgafb
#blacklist nvidiafb
blacklist nouveau
options nouveau modeset=0 
blacklist rivafb
blacklist savagefb
blacklist sstfb
blacklist neofb
blacklist tridentfb
blacklist tdfxfb
blacklist virgefb
blacklist vga16fb
blacklist viafb

# ISDN - see bugs 154799, 159068
blacklist hisax
blacklist hisax_fcpcipnp

Rebuilding initramfs image

If the /boot partition is not large enough, you can back up to another directory

mv /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname -r).img.bak  
dracut /boot/initramfs-$(uname -r).img $(uname -r) 

Change to terminal mode

If you have previously operated in the graphical interface, you need to change to terminal mode, and the runlevel is changed to 3.

systemctl set-default multi-user.target

Install kernel-devel

Need kernel-devel support.

yum install kernel-devel -y

If you upgraded the kernel via elrepo, then install it with the following command:

yum install kernel-ml-devel.x86_64 -y

Kill X related processes

ps -ax | grep X

The output examples are as follows:

[root@nvss239 jstnvr]# ps -ax | grep X
 1201 ?        Ss     0:00 /usr/bin/abrt-watch-log -F Backtrace /var/log/Xorg.0.log -- /usr/bin/abrt-dump-xorg -xD
 1557 tty1     Ssl+   8:39 /usr/bin/X :0 -background none -noreset -audit 4 -verbose -auth /run/gdm/auth-for-gdm-EVsyyE/database -seat seat0 -nolisten tcp vt1
 9863 pts/0    Sl     0:00 /usr/bin/Xvnc :1 -auth /root/.Xauthority -desktop nvss239:1 (root) -fp catalogue:/etc/X11/fontpath.d -geometry 1024x768 -pn -rfbauth /root/.vnc/passwd -rfbport 5901 -rfbwait 30000
10043 ?        Ss     0:00 /usr/bin/ssh-agent /etc/X11/xinit/Xclients
14742 pts/0    S+     0:00 grep --color=auto X

Then kill all related processes by the following command:

kill 1201 1557 9863 10043

Installing NVIDIA Graphics Driver

1. First go to the official website to download the driver corresponding to your graphics card.
   https://www.geforce.com/drivers
2. Then execute the following command to start the installation of the NVIDIA graphics driver:

bash ./NVIDIA-Linux-x86_64-430.40.run -k $(uname -r)

Must be preceded by the -k parameter or the installation will fail.

Enable desktop mode

Previously we changed the operating mode to terminal mode and now change back to desktop mode.

systemctl set-default graphical.target

Reboot the system

reboot

Check the driver installation

Execute NVIDIA official tools to detect driver installation:

nvidia-smi

The sample output is as follows:

[root@test ]# nvidia-smi 
Tue Aug 20 21:19:31 2019       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 390.42                 Driver Version: 390.42                    |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce GT 1030     Off  | 00000000:01:00.0 Off |                  N/A |
| 34%   42C    P8    N/A /  30W |   1118MiB /  2001MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+