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. Disabling Payment Methods in WooCommerce Based on Conditions
2. How to Update Product Quantity in WooCommerce Using Custom Code
3. Dynamically Generating a Table of Contents in WordPress
4. Direct Checkout in WooCommerce - Add Product to Cart from Checkout Page & Skip Shop, Product, and Cart Pages
5. Understanding the Impact of git reset --hard Command

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.