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
Let’s assume our desired FQDN is
/etc/hostsand make sure these two lines are present.
127.0.0.1 localhost 127.0.1.1 foobar.example.com foobar
/etc/hostnamecontent as follow:
Update hostname service:
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.
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