Technology Guides
How to add a subdomain to an existing certificate using certbot
How to add a subdomain to an existing certificate using certbot: find the certificate name, expand it with --cert-name, confirm it and avoid duplicates.
How to set up a subdomain on the same Apache web server as the main domain on Debian
How to set up a subdomain on the same Apache web server as the main domain on Debian: DNS record, document root, virtual host, a2ensite and SSL.
How to make node sqlite3 work with Apple Silicon M1
How to make node sqlite3 work with Apple Silicon M1 and later Macs: which version fixed it, how to check your Node build, and the workaround for old releases.
How to install Active Directory on Windows Server 2019
How to install Active Directory on Windows Server 2019: add the AD DS role, create a new forest, promote the domain controller and join PCs, with PowerShell.
How to install and configure a DNS server on Windows Server 2019
How to install and configure a DNS server on Windows Server 2019: the DNS Server role, forward and reverse zones, A records and client tests, with PowerShell.
How to install Wordpress on Ubuntu on a Cloud VPS (Virtual Private Server)
How to install WordPress on Ubuntu on a cloud VPS: Apache, PHP and MariaDB, the database, the WordPress files and HTTPS, for Ubuntu 26.04 and 24.04 LTS.