How to Install WordPress on CentOS 7?

23 minutes read

To install WordPress on CentOS 7, you can follow these steps:

  1. Log in to your CentOS 7 server using SSH or any other terminal client.
  2. Update the server packages by running the command: sudo yum update.
  3. Install the required packages for running WordPress by running the command: sudo yum install -y httpd mariadb-server php php-mysqlnd.
  4. Start the Apache server using the command: sudo systemctl start httpd.
  5. Enable the Apache server to start automatically on system boot by running: sudo systemctl enable httpd.
  6. Start the MariaDB server using the command: sudo systemctl start mariadb.
  7. Enable the MariaDB server to start automatically on system boot by running: sudo systemctl enable mariadb.
  8. Secure the MariaDB installation by running the command: sudo mysql_secure_installation. Follow the prompts to set the MariaDB root password and answer "Y" to the remaining questions.
  9. Create a new database for WordPress by executing the following command: sudo mysql -u root -p. Enter the root password when prompted. mysql> CREATE DATABASE wordpress; mysql> GRANT ALL PRIVILEGES ON wordpress.* TO 'wordpress_user'@'localhost' IDENTIFIED BY 'password'; mysql> FLUSH PRIVILEGES; mysql> EXIT;
  10. Download and install WordPress by running the following commands: cd /tmp wget https://wordpress.org/latest.tar.gz tar -xvzf latest.tar.gz sudo cp -R /tmp/wordpress/* /var/www/html/
  11. Set the proper ownership and permissions for the WordPress installation: sudo chown -R apache:apache /var/www/html/ sudo chmod -R 755 /var/www/html/
  12. Configure the WordPress database settings by creating a new configuration file: cd /var/www/html cp wp-config-sample.php wp-config.php sudo nano wp-config.php
  13. Inside the wp-config.php file, modify the following lines: define('DB_NAME', 'wordpress'); (replace if you used a different database name) define('DB_USER', 'wordpress_user'); (replace if you used a different database user) define('DB_PASSWORD', 'password'); (replace if you used a different password)
  14. Save the changes and exit the text editor.
  15. Restart the Apache server to apply the changes by running: sudo systemctl restart httpd.
  16. Open a web browser and enter your server's IP address or domain name. You should see the WordPress installation wizard.
  17. Follow the on-screen instructions to complete the installation by providing the site title, username, password, and email address.
  18. After the installation is complete, you can log in to your WordPress dashboard using the provided credentials.


That's it! You have successfully installed WordPress on CentOS 7.

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How do I migrate a WordPress site from another hosting provider to CentOS 7?

To migrate a WordPress site from another hosting provider to a CentOS 7 server, you can follow these general steps:

  1. Set up a CentOS 7 server: You'll need a CentOS 7 server to host your WordPress site. Set up a new server or use an existing one.
  2. Install LAMP stack: Install the LAMP stack on your CentOS 7 server. LAMP includes the Apache web server, MySQL database, and PHP programming language. You can use the following command to install the LAMP stack: sudo yum install httpd mariadb mariadb-server php php-mysql
  3. Configure Apache: Configure Apache to serve your WordPress site. Update the virtual host configuration file (/etc/httpd/conf/httpd.conf) to specify the location of your WordPress site.
  4. Install WordPress: Download the latest version of WordPress from the official website. Extract the WordPress files and copy them to the appropriate directory on your server. Make sure the web server has the necessary permissions to access the files.
  5. Set up the database: Create a new MySQL database and user for your WordPress site. Log in to the MySQL server and run the necessary SQL commands to create the database and user. Grant the user appropriate permissions to access the database.
  6. Configure WordPress: Edit the WordPress configuration file (wp-config.php) and update the database connection details with the values of the database and user created in the previous step.
  7. Import content: Export the content (posts, pages, media, etc.) from your existing WordPress site using the built-in export tool. On your CentOS 7 server, import this content using the built-in import tool. This will transfer your existing content to the new server.
  8. Update DNS: Update the DNS settings of your domain to point to the IP address of your CentOS 7 server. This ensures that users accessing your domain are directed to the new server.
  9. Test the site: Access your WordPress site using the domain name. Verify that all the content and functionality are working correctly.
  10. Configure SSL (optional): If you want to use SSL for your site, you can install an SSL certificate on your CentOS 7 server. There are several ways to do this, such as obtaining a certificate from a trusted certificate authority or using Let's Encrypt.


Remember to always back up your WordPress site before making any major changes or migrations.

How can I optimize the performance of WordPress on CentOS 7?

Here are some steps you can take to optimize the performance of WordPress on CentOS 7:

  1. Use a caching plugin: Install and configure a caching plugin such as WP Super Cache or W3 Total Cache. These plugins generate static HTML files of your WordPress pages, reducing the load on the server.
  2. Enable Gzip compression: Enable Gzip compression on your CentOS 7 server to reduce the size of files transferred between the server and client browsers. This can be done by modifying the server configuration file.
  3. Use a CDN: Content Delivery Networks (CDNs) can improve the performance of your WordPress site by caching and serving static files from servers located closer to your users. Popular CDN providers include Cloudflare, MaxCDN, and Amazon CloudFront.
  4. Optimize images: Compress and resize images before uploading them to your WordPress site. Large image sizes can significantly impact page loading times. You can also use plugins like Smush or EWWW Image Optimizer to compress existing images.
  5. Database optimization: Regularly optimize your WordPress database to remove unnecessary data, such as post revisions, spam comments, and unused plugins. You can use plugins like WP-Optimize or WP-Sweep for this purpose.
  6. Enable browser caching: Configure your server to set appropriate caching headers to enable browser caching. This allows returning visitors to load your site faster by storing static files locally on their devices.
  7. Enable opcode caching: Install and configure an opcode cache such as OPcache or APCu. These tools can speed up PHP execution by caching precompiled script bytecode in memory.
  8. Use a lightweight theme and plugins: Avoid using heavy themes and plugins that come with excessive features and functionality. Opt for lightweight and optimized alternatives to minimize resource usage.
  9. Monitor and optimize server resources: Monitor your server's resource usage and take necessary steps to optimize it. Consider upgrading your server resources if necessary or implementing server-level caching mechanisms.
  10. Enable HTTP/2: If your server and website support it, enable HTTP/2. It is faster and more efficient than the older HTTP protocol.


Remember to regularly monitor your WordPress site's performance using tools like Google PageSpeed Insights or GTmetrix, and make necessary adjustments accordingly.

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Yes, it is recommended to create a virtual host for WordPress on Apache. Creating a virtual host allows you to host multiple websites or web applications on a single Apache server. This can be especially beneficial if you plan to host multiple WordPress sites on the same server or if you want to keep your WordPress installation separate from other websites on the server. Moreover, using a virtual host provides better security, performance, and flexibility in managing your WordPress site.

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What are the minimum system requirements for installing WordPress on CentOS 7?

To install WordPress on CentOS 7, you need to meet the following minimum system requirements:

  1. Operating System: CentOS 7 (or any compatible Linux distribution)
  2. Web Server: Apache (or Nginx)
  3. Database Server: MySQL (or MariaDB)
  4. PHP version: 7.3 or higher
  5. PHP Extensions: mysqli, gd, curl, xml, mbstring
  6. Memory: At least 512 MB RAM (though 1 GB or more is recommended for optimal performance)
  7. Disk Space: At least 1 GB of available disk space
  8. Network Connectivity: Stable internet connection for downloading and updating WordPress


These are the basic requirements to install WordPress. However, it's always recommended to have more resources (especially RAM) for smooth operation if your website is going to have heavy traffic or resource-intensive plugins/themes.

How do I install WordPress on CentOS 7 using the command line?

To install WordPress on CentOS 7 using the command line, follow these steps:

  1. Connect to your CentOS 7 server using SSH.
  2. Update the system packages by running the following command: sudo yum update -y
  3. Install LAMP (Linux, Apache, MySQL, PHP) stack by running the following command: sudo yum install httpd mariadb mariadb-server php php-mysql -y
  4. After the installation completes, start the Apache and MariaDB services and enable them to start on boot by running the following commands: sudo systemctl start httpd sudo systemctl enable httpd sudo systemctl start mariadb sudo systemctl enable mariadb
  5. Secure your MariaDB installation by running the following command: sudo mysql_secure_installation
  6. During the process, you'll be prompted to enter the current root password for MariaDB. Since it's a fresh installation, press Enter to proceed.
  7. Set a new password for the MariaDB root user and answer 'y' to all the other prompts.
  8. Create a new MySQL database and user for WordPress by running the following commands: sudo mysql -u root -p Enter your MariaDB root password when prompted, create a new database, and grant all privileges to a new user: CREATE DATABASE wordpress; GRANT ALL ON wordpress.* TO 'wordpressuser'@'localhost' IDENTIFIED BY 'password'; FLUSH PRIVILEGES; EXIT;
  9. Download and extract the latest WordPress software using the following command: cd /tmp curl -O https://wordpress.org/latest.tar.gz tar xzvf latest.tar.gz
  10. Copy the extracted WordPress files to the Apache document root directory by running the following commands: sudo cp -R /tmp/wordpress/* /var/www/html/
  11. Set the correct ownership and permissions for the WordPress files by running the following commands: sudo chown -R apache:apache /var/www/html/ sudo chmod -R 755 /var/www/html/
  12. Configure the WordPress database settings by renaming the sample configuration file: sudo mv /var/www/html/wp-config-sample.php /var/www/html/wp-config.php
  13. Open the wp-config.php file using a text editor such as nano or vi: sudo vi /var/www/html/wp-config.php
  14. Update the database name, username, and password with the ones you created in step 8: define('DB_NAME', 'wordpress'); define('DB_USER', 'wordpressuser'); define('DB_PASSWORD', 'password');
  15. Save and exit the file.
  16. Restart Apache to apply the changes you made by running the following command: sudo systemctl restart httpd
  17. Finally, access your server's IP address or domain name in a web browser, and you should see the WordPress setup page. Follow the on-screen instructions to complete the installation.


That's it! You have successfully installed WordPress on CentOS 7 using the command line.

What are the necessary file permissions for WordPress installation on CentOS 7?

For a WordPress installation on CentOS 7, the necessary file permissions are:

  • Directories should have a permission of 755. This allows the owner to read, write, and execute, while others can only read and execute.
  • Files should have a permission of 644. This allows the owner to read and write, while others can only read.


Additionally, there are a few specific files and directories that may require different permissions:

  • wp-config.php file: This file should have a permission of 600. This allows only the owner to read and write, providing additional security for sensitive configuration information.
  • wp-content/uploads directory: This directory should have a permission of 775. This allows the owner and group to read, write, and execute, while others can only read and execute. This is necessary for WordPress to be able to upload media files.
  • wp-content/plugins directory: This directory should have a permission of 755. This allows the owner to read, write, and execute, while others can only read and execute. This is needed to install and update plugins.
  • wp-content/themes directory: This directory should have a permission of 755. This allows the owner to read, write, and execute, while others can only read and execute. This is necessary to install and update themes.


Note: It is important to ensure the correct permissions are set to maintain security and prevent unauthorized access to files and directories.

How can I configure caching for WordPress on CentOS 7?

To configure caching for WordPress on CentOS 7, follow these steps:

  1. Install the required dependencies: sudo yum install httpd php php-mysql php-gd php-xml mariadb-server epel-release yum-utils
  2. Enable and start the necessary services: sudo systemctl enable httpd sudo systemctl start httpd sudo systemctl enable mariadb sudo systemctl start mariadb
  3. Secure MySQL/MariaDB by running the security script: sudo mysql_secure_installation
  4. Create a new MySQL/MariaDB database and user for WordPress: sudo mysql -u root -p create database wordpress; grant all privileges on wordpress.* to 'wordpressuser'@'localhost' identified by 'password'; flush privileges; quit;
  5. Download and extract WordPress files: wget https://wordpress.org/latest.tar.gz tar -zxvf latest.tar.gz sudo mv wordpress/ /var/www/html/ sudo chown -R apache:apache /var/www/html/wordpress/
  6. Install additional PHP modules: sudo yum install php-opcache php-mbstring
  7. Configure the PHP settings for caching. Edit the PHP configuration file: sudo nano /etc/php.ini Locate the following lines and uncomment them: opcache.enable=1 opcache.enable_cli=1 opcache.memory_consumption=256 opcache.interned_strings_buffer=8 opcache.max_accelerated_files=10000 opcache.revalidate_freq=0 opcache.fast_shutdown=1
  8. Save and exit the PHP configuration file.
  9. Restart the Apache web server to apply the changes: sudo systemctl restart httpd
  10. Install a caching plugin for WordPress. One popular choice is "WP Super Cache." Log in to your WordPress admin panel, go to "Plugins" -> "Add New" and search for "WP Super Cache." Install and activate the plugin.
  11. Configure WP Super Cache by going to "Settings" -> "WP Super Cache." Enable caching and choose the recommended settings. Save the changes.
  12. Test the caching by visiting your website and checking the page source code to see if the cache is being used.


That's it! You have now configured caching for WordPress on CentOS 7. This will help improve the performance and load times of your website.

What is CentOS 7?

CentOS 7 is a Linux distribution based on the source code of Red Hat Enterprise Linux (RHEL). It is an open-source, community-driven operating system that is designed to provide a free and stable platform for enterprise-level computing. CentOS 7 is known for its long-term support and security updates, making it a popular choice for server deployments. It includes a wide range of software packages and tools that are commonly used in server environments, and it can be used for various purposes such as web hosting, database management, virtualization, and more.

How do I set up automatic updates for WordPress on CentOS 7?

To set up automatic updates for WordPress on CentOS 7, follow these steps:

  1. Connect to your CentOS server via SSH.
  2. Switch to the root user with the command: sudo su
  3. Install the yum-cron package by running the command: yum install yum-cron
  4. Edit the yum-cron configuration file using a text editor like nano: nano /etc/yum/yum-cron.conf
  5. Locate the line that says apply_updates = no and change it to apply_updates = yes.
  6. Save and exit the file by pressing Ctrl+X, followed by Y, and then hitting Enter.
  7. Restart the yum-cron service to apply the changes: systemctl restart yum-cron
  8. Install the wp-cli tool to manage WordPress from the command line: curl -O https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli.phar chmod +x wp-cli.phar mv wp-cli.phar /usr/local/bin/wp
  9. Verify wp-cli installation by running: wp --info
  10. Use wp-cli to enable automatic updates for WordPress core, plugins, and themes using the following commands:
1
2
wp config set AUTOMATIC_UPDATER_DISABLED false --type=constant
wp config set WP_AUTO_UPDATE_CORE minor


  1. Finally, configure a cron job to periodically run the WordPress updates by editing the root user's cron jobs: crontab -e Add the following line at the bottom of the file to run the updates every 12 hours: 0 */12 * * * /usr/local/bin/wp core update --quiet && /usr/local/bin/wp plugin update --quiet && /usr/local/bin/wp theme update --quiet Save and exit the file.


That's it! Automatic updates for WordPress on CentOS 7 are now set up.

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