Run Multiple Sites on an Instance: Digital Ocean & Linode

Sign up or log in to DigitalOcean, create a development project, and deploy Ubuntu 18.04 droplet with 1 GB RAM, 25 GB SSD, and 1 TB transfer in New York.

Discover how to create and attach a floating IP on Digital Ocean, enabling you to transfer the IP between droplets and recover quickly from snapshots.

Connect to your Digital Ocean server using ssh from terminal or putty, log in as root with the floating IP, and securely change the initial password to complete root access.

Install apache2 on your server by running apt update and apt install apache2, then test the setup by loading the server IP to view the default apache page.

Install and secure a MySQL server, remove anonymous users and test database, disallow remote root, and switch root authentication from auth_socket to MySQL native password.

Install and test PHP to enable dynamic web content, connect PHP with MySQL to insert, update, and retrieve data; create an info.php to verify configuration, then secure by deleting it.

install phpMyAdmin with apache, mysql, and php, update the package index, configure the database during setup, enable mbstring, restart apache, and access the login page to manage databases.

Learn how to configure virtual hosts to serve multiple domains from a single server with Apache, with each domain using its own directory under www and an html subfolder.

Create a directory for each domain, set 755 permissions, then make an html subfolder and an index.html for each domain using nano; optionally manage files with filezilla for easy access.

Configure virtual host files for each domain in Apache by setting the server name and alias, then enable sites and reload Apache to serve multiple domains from separate directories.

Configure the dns zone file on digital ocean, then update registrar nameservers to digital ocean so each domain points to the correct web server via a per-domain virtual host setup.

Configure DNS zone files by creating A records for the domain and www pointing to the server's floating IP, test propagation, and verify with a proxy across two domains.

Secure multiple domains on your server by installing certbot and obtaining Let's Encrypt SSL certificates for each domain, configuring Apache virtual hosts, and enforcing HTTPS redirects.

Create a Linode account by signing up, confirming your email, entering billing and payment details, agreeing to the master services agreement, and accessing cloud manager after the temporary $1 hold.

Explore the Linode cloud manager dashboard, access accounts and virtual instances, manage block and object storage, and review the marketplace and support resources.

Enable two-factor authentication on your Linode account using Google Authenticator, scan the QR code, enter tokens, and securely store the scratch code to test login security.

Deploy a Linode virtual instance by selecting Ubuntu 20.04 LTS, Newark data center, and 1 GB RAM, 25 GB root volume plan, then set a strong root password and launch.

Explore the Linode instance dashboard to monitor provisioning status, access SSH commands, review analytics and network usage, manage storage volumes, configurations, backups, and instance settings.

Develop secure administration of a Linode instance by connecting via the command line to update the operating system, install and manage software, modify system files, monitor performance, and configure firewalls.

Compare password authentication with ssh key authentication and learn how private and public keys secure remote access, protecting against brute-force attempts with openssh key generation.

Generate an ssh key pair on Windows with Putty and Putty Gen, save public and private keys, and configure ssh key authentication to connect to a Linode instance.

Generate an ssh key pair on macOS or Linux, use 4096 bits, and set a passphrase. Copy the public key to the Linode root using ssh-copy-id and connect via ssh.

Connect with lish to remotely administer your Linode instance by launching the web-based lish console from the cloud manager, log in as root, and terminate the session for security.

Learn to add SSH public keys to your Linode cloud manager, label and save keys, and apply them to future instance deployments for streamlined provisioning.

Introduce the Linux kernel and its role, explore popular distributions, compare Linux with Windows, and review core terms such as bootloader, kernel, desktop environments, and applications.

Explore the Linux filesystem, its hierarchical directory structure, and the difference between absolute and relative paths, with examples of /bin, /boot, /home, and /var.

Connect to an Ubuntu server via ssh, check available updates, and master apt update, apt upgrade, and apt dist-upgrade to keep packages current and secure.

Navigate the Linux file system hierarchy using pwd, cd, and ls, distinguish root from non-root accounts, and create and edit files with nano in the root and var directories.

Create and organize directories with mkdir, move and copy files using mv and cp, and navigate the filesystem with cd and ls, including recursive copying and basic rm deletion.

Set a custom host name, update the hosts file, and configure time zone and rtc on ubuntu basic server configuration, then enable ntp and prepare non-root user accounts.

Learn how to manage root versus non-root accounts on Linux servers, assign permissions with user groups, and use the pseudo or su for controlled administrative access.

Create a non-root user named Bob, add him to the sudo group for superuser access, and verify membership as preparation for SSH key authentication in the next lesson.

Secure a non-root user by generating a 4096-bit SSH key pair for Bob, adding the public key to authorized_keys, and enabling sudo for secure administration.

Disable root login and password authentication to enforce ssh key authentication for the server. Update sshd_config, restart ssh, and verify that only key-based logins succeed.

Install and configure the lamp stack on an ubuntu server using the command line, including apache, mariadb, and php to host dynamic websites and web applications.

Install lamp stack quickly using the Linode marketplace one-click app, configure root password and ssl on ubuntu 20.04, verify by IP, and manage deployment lifecycle.

Log in to your server, go to /var/www/html, create info.php to test PHP with phpinfo(). Load it in a browser to verify Apache is running, then delete the file.

Connect to a MariaDB database from PHP, create a database and a non-root user, assign privileges, and verify access by creating a table, inserting data, and running a select.

Create a php script in the web root with nano to connect to MariaDB and output the name list table records as an HTML ordered list in a browser.

Learn to administer a Linode remote instance with a graphical desktop by installing Xfce and using glitch or ECS, then browse the file system and web root visually.

Terminate all Linode instances and delete unused volumes and images including custom and recovery images to prevent charges, and close the account if no further use is planned.

Gain practical cloud administration skills by deploying and configuring Linux instances, spinning up sites quickly, and securing servers with non-root accounts and firewall practices using remote CLI.