CentOS installation PostgreSQL and CentOS installation black screen solution

php editor Xigua brings you a tutorial on installing PostgreSQL on CentOS and solving the black screen problem during CentOS installation. In this article, we will introduce in detail how to install PostgreSQL on the CentOS operating system, and provide solutions to solve the black screen problem you may encounter during the CentOS installation process. Whether you are a beginner or an experienced developer, this tutorial can help you successfully complete the installation and solve possible problems, so that you can successfully use PostgreSQL for development and management work.

CentOS installation of PostgreSQL

Installing PostgreSQL on CentOS is very simple, the following are the detailed steps:

Step 1: Update system

Before starting the installation, first ensure that your CentOS system is up to date, update the system using the following command:

```

sudo yum update

Step 2: Install PostgreSQL

After updating the system, use the following command to install PostgreSQL:

sudo yum install postgresql-server

Step 3: Initialize the database

After the installation is complete, you need to initialize the PostgreSQL database. Use the following command to initialize:

sudo postgresql-setup initdb

Step 4: Start and set up auto-start at boot

Complete initialization After that, start the PostgreSQL service and set it to start automatically when the system starts:

sudo systemctl start postgresql

sudo systemctl enable postgresql

Step 5: Set access permissions

By default, PostgreSQL only allows local connections. If you need to access the database remotely, you can edit the PostgreSQL configuration file and change access permissions. Use the following command to open the configuration file:

sudo vi /var/lib/ pgsql/data/pg_hba.conf

Find the following lines in the file:

# IPv4 local connections:

host all all 127.0.0.1/32 ident

Modify it to:

host all all 0.0.0.0/0 md5

Save and close the file.

Solution to black screen during CentOS installation

During the use of CentOS, you may sometimes encounter a black screen. This may be caused by a variety of reasons, such as graphics card driver issues or system configuration. Error, here are some common methods to solve the CentOS black screen problem:

Method 1: Change the graphics card driver

The black screen problem may be related to the graphics card driver you are currently using. Try changing or updating the graphics card driver to To solve the problem, you can check the currently used graphics card driver by running the following command:

lspci -k | grep -A 2 -i "VGA"

Determine your graphics card model based on the displayed information And find the corresponding driver, then follow the instructions provided by the driver to install or update it.

Method 2: Check Xorg configuration

The black screen problem may also be caused by misconfiguration in the Xorg configuration file, you can try to reconfigure Xorg to solve the problem, use the following command to back up and restart Configure the Xorg configuration file:

sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf.bak

sudo Xorg -configure

sudo mv ~ /xorg.conf.new /etc/X11/xorg.conf

Then restart the system for the changes to take effect.

Method 3: Adjust the monitor resolution

The black screen problem may be caused by incorrect monitor resolution settings. Try adjusting the monitor resolution to solve the problem. You can use the following commands to view and change Monitor resolution:

xrandr

xrandr --output --mode

Replace `` with your monitor name and `` with your desired resolution.

Share for you

I hope the above steps can help you successfully install PostgreSQL and solve the CentOS black screen problem. If you encounter any other problems or have other Linux-related problems, please feel free to consult us. .

The above is the detailed content of CentOS installation PostgreSQL and CentOS installation black screen solution. For more information, please follow other related articles on the PHP Chinese website!