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+ <!DOCTYPE html>
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+ <html lang="en" xmlns="http://www.w3.org/1999/xhtml">
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+ <head>
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+ <title>Setting Up Shared Database Container in Docker</title>
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+ <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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+ <meta charset="UTF-8">
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+ <meta name="keywords" content="Docker Made Easy,Home Lab,Home Lab Ideas,Install Guide,Self-Hosted,Container,Containerization,Docker,Docker Host,Docker Made Simple,Linux,PHP,PHP Developer,System Administrator,Web Server Administration,Web Server,Web,Shared Database Docker Container,MariaDB,MySQL,How To,Tutorial,i12bretro">
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+ <meta name="author" content="i12bretro">
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+ <meta name="description" content="Setting Up Shared Database Container in Docker">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <meta name="revised" content="01/14/2023 09:50:29 AM" />
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+ <link rel="icon" type="image/x-icon" href="includes/favicon.ico">
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+ <script type="text/javascript" src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
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+ <script type="text/javascript" src="includes/js/steps.js"></script>
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+ <link href="css/steps.css" rel="stylesheet" type="text/css" />
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+ </head>
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+ <body>
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+ <div id="gridContainer">
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+ <div class="topMargin"></div>
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+ <div id="listName" class="topMargin">
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+ <h1>Setting Up Shared Database Container in Docker</h1>
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+ </div>
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+ <div></div>
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+ <div id="content">
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+ <h2>The Objective</h2>
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+
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+<p>To setup a single database container that can be used with multiple applications and frontends.</p>
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+
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+<h2>Preparation</h2>
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+
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+<ol>
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+ <li>Pull the Docker images used in the examples by running the following commands in a terminal
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+ <div class="codeBlock"># mariadb<br />
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+ docker pull mariadb<br />
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+ # phpmyadmin<br />
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+ docker pull phpmyadmin<br />
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+ # wordpress<br />
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+ docker pull wordpress</div>
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+ </li>
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+</ol>
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+
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+<h2>Method 1 - Container Links</h2>
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+
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+<p>This method utilizes the --link flag. Container links are a "legacy feature" of Docker and may become deprecated in a future release. Further reading <a href="https://docs.docker.com/network/links/" target="_blank">https://docs.docker.com/network/links/</a></p>
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+
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+<ol>
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+ <li>Run the following commands in a terminal to setup the container stack using --link
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+ <div class="codeBlock"># create working directories<br />
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+ mkdir ~/docker/mariadb -p && mkdir ~/docker/wordpress -p<br />
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+ # set permissions on working directories<br />
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+ sudo chown "$USER":"$USER" ~/docker -R<br />
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+ # run the mariadb docker container<br />
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+ docker run -d --name mariadb -e MYSQL_ROOT_PASSWORD=r00tp@ss -v ~/docker/mariadb:/var/lib/mysql --restart=unless-stopped mariadb:latest<br />
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+ # run phpmyadmin container linked to the mariadb container<br />
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+ docker run -d --name phpmyadmin --link mariadb -e PMA_HOST=mariadb -p 8080:80 --restart=unless-stopped phpmyadmin<br />
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+ # connect to mysql CLI inside the mariadb container<br />
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+ docker exec -it mariadb mysql --user root -pr00tp@ss<br />
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+ # create a new database and service account for wordpress<br />
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+ CREATE DATABASE wordpress DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci;<br />
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+ GRANT ALL ON wordpress.* TO 'wordpress_rw'@'%' IDENTIFIED BY 'W0rdPr3ss!!';<br />
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+ FLUSH PRIVILEGES;<br />
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+ EXIT;<br />
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+ # run the wordpress docker container<br />
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+ docker run -d --name wordpress --link mariadb -p 8880:80 -e WORDPRESS_DB_HOST=mariadb -e WORDPRESS_DB_USER=wordpress_rw -e WORDPRESS_DB_PASSWORD='W0rdPr3ss!!' -e WORDPRESS_DB_NAME=wordpress -v ~/docker/wordpress:/var/www/html --restart unless-stopped wordpress</div>
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+ </li>
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+ <li>Remove the created containers by running the following commands
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+ <div class="codeBlock"># remove the containers<br />
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+ docker rm wordpress -f && docker rm phpmyadmin -f && docker rm mariadb -f<br />
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+ # remove working directories<br />
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+ sudo rm ~/docker/mariadb -R && sudo rm ~/docker/wordpress -R</div>
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+ </li>
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+</ol>
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+
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+<h2>Method 2 - Docker Networking</h2>
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+
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+<p>Create a Docker network and connect each of the containers to it so they can communicate.</p>
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+
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+<ol>
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+ <li>Run the following commands in a terminal to setup the container stack using Docker networking
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+ <div class="codeBlock"># create working directories<br />
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+ mkdir ~/docker/mariadb -p && mkdir ~/docker/wordpress -p<br />
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+ # set permissions on working directories<br />
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+ sudo chown "$USER":"$USER" ~/docker -R<br />
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+ # create the docker network<br />
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+ docker network create containers<br />
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+ # run the mariadb docker container<br />
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+ docker run -d --name mariadb -e MYSQL_ROOT_PASSWORD=r00tp@ss -v ~/docker/mariadb:/var/lib/mysql --network containers --restart=unless-stopped mariadb:latest<br />
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+ # run phpmyadmin container<br />
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+ docker run -d --name phpmyadmin -e PMA_HOST=mariadb -p 8080:80 --restart=unless-stopped --network containers phpmyadmin<br />
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+ # connect to mysql CLI inside the mariadb container<br />
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+ docker exec -it mariadb mysql --user root -pr00tp@ss<br />
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+ # create a new database and service account for wordpress<br />
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+ CREATE DATABASE wordpress DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci;<br />
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+ GRANT ALL ON wordpress.* TO 'wordpress_rw'@'%' IDENTIFIED BY 'W0rdPr3ss!!';<br />
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+ FLUSH PRIVILEGES;<br />
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+ EXIT;<br />
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+ # run the wordpress docker container<br />
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+ docker run -d --name wordpress -p 8880:80 -e WORDPRESS_DB_HOST=mariadb -e WORDPRESS_DB_USER=wordpress_rw -e WORDPRESS_DB_PASSWORD='W0rdPr3ss!!' -e WORDPRESS_DB_NAME=wordpress -v ~/docker/wordpress:/var/www/html --network containers --restart=unless-stopped wordpress</div>
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+ </li>
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+ <li>Remove the created containers and network by running the following commands
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+ <div class="codeBlock"># remove the containers<br />
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+ docker rm wordpress -f && docker rm phpmyadmin -f && docker rm mariadb -f<br />
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+ # remove docker network<br />
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+ docker network rm containers<br />
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+ # remove working directories<br />
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+ sudo rm ~/docker/mariadb -R && sudo rm ~/docker/wordpress -R</div>
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+ </li>
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+</ol>
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+
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+<h2>Method 3 - Exposing Host Ports</h2>
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+
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+<p>Expose ports on the host into the container and connect other containers to the host's exposed port</p>
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+
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+<ol>
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+ <li>Run the following commands in a terminal to setup the container stack using exposed ports on the host
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+ <div class="codeBlock"># create working directories<br />
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+ mkdir ~/docker/mariadb -p && mkdir ~/docker/wordpress -p<br />
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+ # set permissions on working directories<br />
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+ sudo chown "$USER":"$USER" ~/docker -R<br />
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+ # run the mariadb docker container<br />
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+ docker run -d --name mariadb -e MYSQL_ROOT_PASSWORD=r00tp@ss -v ~/docker/mariadb:/var/lib/mysql -p 3306:3306 --restart=unless-stopped mariadb:latest<br />
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+ # run phpmyadmin container<br />
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+ docker run -d --name phpmyadmin -e PMA_HOST=$(hostname -f) -p 8080:80 --restart=unless-stopped phpmyadmin<br />
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+ # connect to mysql CLI inside the mariadb container<br />
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+ docker exec -it mariadb mysql --user root -pr00tp@ss<br />
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+ # create a new database and service account for wordpress<br />
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+ CREATE DATABASE wordpress DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci;<br />
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+ GRANT ALL ON wordpress.* TO 'wordpress_rw'@'%' IDENTIFIED BY 'W0rdPr3ss!!';<br />
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+ FLUSH PRIVILEGES;<br />
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+ EXIT;<br />
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+ # run the wordpress docker container<br />
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+ docker run -d --name wordpress -p 8880:80 -e WORDPRESS_DB_HOST=$(hostname -f) -e WORDPRESS_DB_USER=wordpress_rw -e WORDPRESS_DB_PASSWORD='W0rdPr3ss!!' -e WORDPRESS_DB_NAME=wordpress -v ~/docker/wordpress:/var/www/html --restart=unless-stopped wordpress</div>
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+ </li>
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+ <li>Remove the created containers and network by running the following commands
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+ <div class="codeBlock"># remove the containers<br />
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+ docker rm wordpress -f && docker rm phpmyadmin -f && docker rm mariadb -f<br />
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+ # remove working directories<br />
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+ sudo rm ~/docker/mariadb -R && sudo rm ~/docker/wordpress -R</div>
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+ </li>
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+</ol> </div>
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+ </div>
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+ </body>
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+ </html>
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+
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i12bretro