Build Solutions across VPCs with Peering

Using the AWS console, create the Web_VPC VPC with the 192.168.0.0/16 IPv4 CIDR block. Create the WebIG internet gateway. Modify the route table to attach the internet gateway to the Web_VPC.

Create a peering connection called DBtoWeb. Peer the newly created Web_VPC with the DB_VPC. Ensure DB_VPC is the requester and Web_VPC is the accepter. Accept the request.

1. Launch a new public facing Ubuntu Server 24.04 LTS EC2 instance in the Web_VPC VPC using the provided bootstrap user data script.

   #!/bin/bash
   sudo apt update
   sudo apt install apache2 php libapache2-mod-php php-mysql php-curl php-gd php-mbstring php-xml php-xmlrpc php-soap php-intl php-zip unzip -y
   sudo ufw allow in "Apache"
   sudo a2enmod rewrite
   systemctl restart apache2
   cd /tmp/ && wget https://wordpress.org/latest.zip
   unzip latest.zip -d /var/www
   chown -R www-data:www-data /var/www/wordpress/
   mv /var/www/wordpress/wp-config-sample.php /var/www/wordpress/wp-config.php
   cd /var/www/wordpress/
   perl -pi -e "s/database_name_here/wordpress/g" wp-config.php
   perl -pi -e "s/username_here/wordpress/g" wp-config.php
   perl -pi -e "s/password_here/wordpress/g" wp-config.php
   perl -i -pe'
   BEGIN {
   @chars = ("a" .. "z", "A" .. "Z", 0 .. 9);
   push @chars, split //, "!@#$%^&*()-_ []{}<>~\`+=,.;:/?|";
   sub salt { join "", map $chars[ rand @chars ], 1 .. 64 }
   }
   s/put your unique phrase here/salt()/ge
   ' wp-config.php
   wget https://raw.githubusercontent.com/ACloudGuru-Resources/course-aws-certified-solutions-architect-associate/main/lab/5/000-default.conf
   mkdir wp-content/uploads
   chmod 775 wp-content/uploads
   mv 000-default.conf /etc/apache2/sites-enabled/
   systemctl restart apache2
   

2. Configure Wordpress by editing /var/www/wordpress/wp-config.php to point DB_HOST to the RDS database endpoint.

The RDS instance requires a security group modification to allow access from 192.168.0.0/16.

Visit the IP address of your EC2 instance in a web browser, and confirm WordPress is working correctly and communicating with the RDS instance via VPC peering.