Home / server / Questions / 369415
Accepted
Abhishek
Asked: 2012-03-14 17:39:42 +0800 CST

Configure domain name in CentOS

  • 772

How do I configure domain names in Cent OS?

I am actually connecting to the servers via SSH remote terminal and I also have root credentials. Does configuring the /etc/sysconfig/network and /etc/hosts suffice? Would be great to have some steps or configuration guides..

centos domain-name-system configuration domain-name centos5

3 Answers

  1. Best Answer

    Four things to do:

    • Add the hostname entry to /etc/hosts. Use the format detailed here.

    • If your hostname is "your_hostname", type hostname your_hostname at a command prompt to make the change effective.

    • Define the hostname in /etc/sysconfig/network to make this setting persist across reboots.

    • Reboot the system or restart services that depend on hostname (cups, syslog, apache, sendmail, etc.)

    • 22

  2. If by domain name you mean domain suffix, then /etc/resolv.conf is where the domain goes. Just add a line domain yourdomain.com

    Then to set your server's hostname, there's only one good place for it, and it's /etc/sysconfig/network. Add a line HOSTNAME=yourhostname, and don't put the domain suffix in the hostname, as it will take it from /etc/resolv.conf.

    You do not need to add anything (and shouldn't) in /etc/hosts to define your hostname. This is the wrong way to do it.

    To test your setup, use the hostname command:

    • Use hostname -s to get the short name (should reflect what you have in /etc/sysconfig/network

    • Use the hostname -d command to test your domain (should reflect what you have in /etc/resolv.conf)

    • To test it all together, you can use hostname -f or hostname -A for the very long version.

    • 9

  3. The way to do it now is hostnamectl hostname.domainname

    • 0