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Install wordpress under CentOS7

  • 2020年 03月13日

Documents on digitalocean are well-written.

Install LAMP

apache(httpd)

The package name of apache under CentOS is httpd, not ‘apache’ itself.

  • Install
$ sudo yum install httpd
  • Start
$ sudo systemctl start httpd.service
  • Set on boot
$ sudo systemctl enalbe httpd.service

mysql(mariadb)

  • Install and start
$ sudo yum install mariadb-server mariadb
$ sudo systemctl start mariadb
  • Security setting script (don’t forget to set the root password)
$ sudo mysql_secure_installation
  • Set on boot
$ sudo systemctl enable mariadb.service

php

  • Install
$ sudo yum install php php-mysql
  • Restart apache
$ sudo systemctl restart httpd.service

Then we shall test while php is running correctly. Create an info.php under default web directory /var/www/html/.

<?php phpinfo(); ?>

Use the browser to open http://[your ip or domain]/info.php, check the page. Delete info.php after everything is correct.

After installing wordpress you may found it said php’s version too low. But there is no higher version of php in repo, so we need to reinstall php7.

  • Enable remi repo
$ sudo yum install epel-release yum-utils
$ sudo yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm
  • Install php7.3 and useful modules
$ sudo yum-config-manager --enable remi-php73
$ sudo yum install php php-common php-opcache php-mcrypt php-cli php-gd php-curl php-mysqlnd

Check php version

$ php -v

Then restart apache.

Install wordpress

Create database

Enter mysql console

$ mysql -u root -p

Enter the follow commands in console (change the database name, username and password)

> CREATE USER wordpressuser@localhost IDENTIFIED BY 'password';
> GRANT ALL PRIVILEGES ON wordpress.* TO wordpressuser@localhost IDENTIFIED BY 'password';
> FLUSH PRIVILEGES;
> exit

Install wordpress

  • Get the latest wordpress：
$ wget http://wordpress.org/latest.tar.gz
$ tar xzvf latest.tar.gz
  • Copy files to www directory:
$ cp -R ./wordpress /var/www/
  • Create a directory for uploading:
$ mkdir /var/www/wordpress/wp-content/uploads
  • Change file owner:
$ sudo chown -R apache:apache /var/www/wordpress/*

Configure wordpress

$ cp wp-config-sample.php wp-config.php

Edit these lines in wp-config.php (three lines):

// ** MySQL settings - You can get this info from your web host ** //
/** The name of the database for WordPress */
define('DB_NAME', 'wordpress');

/** MySQL database username */
define('DB_USER', 'wordpressuser');

/** MySQL database password */
define('DB_PASSWORD', 'password');

Use acme.sh to get cert

Install acme.sh

$ curl https://get.acme.sh | sh

You may link acme.sh to /usr/local/bin

Generate cert

Make sure your domain is correctly resolved. Suppose we use cloudflare as nameserver. Login to cloudflare and get your own API key.

Export two variabels:

$ export CF_Token="sdfsdfsdfljlbjkljlkjsdfoiwje"
$ export CF_Account_ID="xxxxxxxxxxxxx"

Get the cert:

$ acme.sh --issue --dns dns_cf -d example.com -d www.example.com

Install cert

Use the command recommanded by acme:

$ acme.sh --installcert -d example.com \
--cert-file /path/to/certfile/in/apache/cert.pem \
--key-file /path/to/keyfile/in/apache/key.pem \
--fullchain-file /path/to/fullchain/certfile/apache/fullchain.pem \
--reloadcmd "service apache2 reload"

Configure apache

<VirtualHost *:443>
        ServerName your.domain

        ServerAdmin webmaster@example.com
        DocumentRoot /var/www/wordpress
        SSLEngine On

        SSLCertificateFile your/cert/file
        SSLCertificateKeyFile your/key/file

        Alias /wp-content /var/www/wordpress/wp-content
        <Directory /var/www/wordpress>
            Options FollowSymLinks
            AllowOverride Limit Options FileInfo
            DirectoryIndex index.php
            Require all granted
        </Directory>
        
        <Directory /var/www/wordpress/wp-content>
            Options FollowSymLinks
            Require all granted
        </Directory>
        # The variables here are not right in CentOS
        ErrorLog ${APACHE_LOG_DIR}/error.log
        CustomLog ${APACHE_LOG_DIR}/access.log combined

</VirtualHost>

Open the browser and following wordpress’s installing steps.

REF

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