Resume to set a domain name in Linux
concepts:
- FQDN (Fully Qualified Domain Name)
eg:
hostname = server1 // FQDN = server1.example.com
1. First add FQDN to your hostname in /etc/hosts file.
# cat /etc/hosts
10.120.68.23 server1.example.com server1
confirm the FQDN issue the following command:
# hostname -f
server1.example.com
2.1. Configure domain name (Red Hat RHEL, Fedora and CentOS)
From these path add the parameters needs
vi /etc/sysconfig/network
DOMAINNAME=<domainname>
vi /etc/sysctl.conf
kernel.domainname = <domainname>
2.2. figure domain name ( Ubuntu, Debian)
#vi /etc/hostname
server1
Then restart the service:
# service hostname restart
3. add the domain in resolv.conf
vi /etc/resolv.conf
search example.com
4. check up everything is already config:
Your server’s hostname
# hostname
server1
Your FQDN
# hostname -f
server1.example.com
Your domain name of the server!
# dnsdomainname
example.com
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