Cannot find the Linux machine by hostname

ufmale · 03-18-2008, 10:36 AM

I setup a Redhat machine and set its hostname to server1.mycompany.com.
Now I cannot ping it or access it by the hostname. However, accessing via the IP address works fine. Is there any way to flushdns or something like that on Linux?

acid_kewpie · 03-18-2008, 10:39 AM

well what DNS do you have? has it ever worked? I assume you have done more than just set the hostname and expect that to magiaclly become known by other systems?

ufmale · 03-18-2008, 11:21 AM

Yes. It works before. I am on a dynamic IP within a company network so I wasn't sure if when the IP change, it will mess up the hostname.

Linville79 · 03-18-2008, 12:51 PM

From www.tech-faq.com:

Quote:

In Linux, the nscd daemon manages the DNS cache. To flush the DNS cache, restart the nscd daemon. To restart the nscd daemon, use the command `/etc/rc.d/init.d/nscd restart`.

However, just setting a host name on a server does not make it available to other machines, neither inside our outside of the network that it is on. Some sort of name resolution is needed, either via DNS or by using your /etc/hosts file on the machine you are trying to connect from.