Common DNS Configurations
Updated by Linode Written by Linode
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Set Up a Domain
The most common DNS configuration is a single domain name on a single Linode. For this, you’ll need to add SOA and NS records for all of your name servers, and A/AAAA records for your domain names. Use the screenshot below as a guide.
To configure a subdomain, such as
staging.example.org, create an A record with the subdomain’s hostname. Point the record at the IP address of the server you want to host the subdomain:
Host Multiple Domains on a Single Server
To host multiple domain names on a single server, create a separate domain zone for each domain name as shown below. When creating the new domain zones, we recommend that you allow the DNS Manager to automatically insert basic records. At a minimum, you’ll need an A record for each domain name pointing to the server’s IP address.
Use One Domain on Multiple Servers
If you have more than one server, but only one domain name, you can point A records with server-specific hostnames to all servers that need domain names. One machine will be the “front end” for the domain, by virtue of the first-level domain’s A record pointing to it, but the domain can serve as a proxy for services provided by other machines if needed. For example, if you wanted to create a development environment on another server, you could create an A record for
staging.example.org and point it at another Linode’s IP address.
Route Email to Third-Party Mail Services
To route email to a third-party email service, create MX records that associate your mail server (for example,
mail.example.org) with a hostname provided by the third-party service. For instructions, see the website of your third-party email service.
Use Wildcard DNS Records
A wildcard DNS record matches requests for non-existent domain names. For example, if you create an A record for
*.example.org, and a user visits
nonexistantname.example.org, that user will be redirected to
example.org. An example wildcard DNS record is shown below.
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This guide is published under a CC BY-ND 4.0 license.