As shown in my article “A small CDN for my Mastodon instance metalhead.club,” I like to use CNAMEs to organize my DNS entries. I usually create a DNS record for each host that maps its hostname to the IP. Then I use one or more CNAME entries to link certain (sub)domains to these CNAMEs depending on the service and purpose. This helps with overview and can make organization easier—especially if IP addresses for hosts need to be changed. Thanks to the chaining of entries, only the last mapping from server hostname to IP needs to be adjusted if the IP address of the target host changes.
