Update hostname and FQDN - Debian 8

Your system needs to have a fully qualified domain name (fqdn) in order to ……..

If you ever get such an error message from our server, then we need to set a Fully Qualified Domain Name (FQDN) on our Debian server.

To do so, we need to edit the file /etc/hosts and /etc/hostname.

Let’s assume our desired FQDN is foobar.example.com:

• Edit /etc/hosts and make sure these two lines are present.

    127.0.0.1	localhost
    127.0.1.1	foobar.example.com foobar
  

• Edit /etc/hostname content as follow:

    foobar
  

• Update hostname service:

    /etc/init.d/hostname.sh
  

Now check our updates

root@server:~# hostname
foobar.example.com


root@server:~# hostname --fqdn
foobar.example.com

root@server:~# hostname -f
foobar.example.com


root@server:~# dnsdomainname
example.com

Note: FQDN and the hosted domain names don’t have any relationship. We can use any domain name as our FQDN. Some random text (xxxx.xxxxx.xxx format) is always better.

Recent Posts

1. Automating Code Linting with GitHub Actions for WordPress Plugins
2. Comprehensive Guide to Linting PHP, JavaScript, and CSS in WordPress Plugins Using Composer
3. The Ultimate Guide to Indexing in Database Design
4. Understanding 'update_meta_cache' in WordPress - When to Use It, When Not to, and Its Impact on Database Queries
5. A Guide to Configuring JavaScript and SCSS Paths in WordPress Plugins with @wordpress/scripts

This article was published on September 14, 2017

Your Questions / Comments

If you found this article interesting, found errors, or just want to discuss about it, please get in touch.