How to set FQDN in Linux
Contents
What is FQDN?
FQDN stands for Fully Qualified Domain Name. It’s complete domain name for a computer or host on the internet. FQDN is made of two things: hostname and domain name.
Let me give you an example for demonstration.
FQDN for my mail server is myemailserver.abdullah.today
.
The hostname is myemailserver
.
The domain is abdullah.today
.
Requirements
You will need:
- IP Address
- Hostname
- FQDN
Edit hosts file
Edit the /etc/hosts
file and append this like this.
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Replace IP address with your host IP, hostname with what your want to set or what you already have set.
Edit hostname
Edit /etc/hostname
and replace with your new hostname if you want to change
hostname as well.
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Or you can use hostnamectl
to set hostname.