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Old 02-28-2016, 07:01 AM   #1
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CentOS 6.5 server not pingable by hostname

Hi all,

I'm currently in the process of setting up my CentOS 6.5 server to replace my Debian 7.5 server (I attempted to use something no Redhat-derived, and didn't like it).

Anyway, my Debian server is pingable by hostname from the Windows clients on my network:

C:\Users\Jedi>ping novak
Pinging novak [] with 32 bytes of data:
Reply from bytes=32 time=2ms TTL=64
Reply from bytes=32 time=1ms TTL=64
But, my CentOS server is not:
C:\Users\Jedi>ping groth
Ping request could not find host groth. Please check the name and try again.
I know this should be handled by DNS somewhere, but the only thing that should be running that is my router, where DHCP is configured, but I've not touched any DNS settings. I don't have Novak set up in the hosts file on my Windows clients or anything, either. To be extra sure of this, I tested the pings from my Media PC in the lounge, and it can ping the Debian box by hostname as well. Interestingly, from my CentOS 6.7 client, neither hostname is pingable!

Given that this worked "out of the box" with Debian, is there something I'm missing to make the CentOS box "advertise" its hostname to the network?

I'm considering just setting up BIND on the CentOS server, and configuring everything by hand, but first I'd like to know why this works Windows>Debian without me doing anything, but doesn't work Windows>CentOS, and doesn't work CentOS>CentOS or CentOS>Debian.

Any ideas, from anyone?

Old 02-28-2016, 09:24 PM   #2
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Welcome to LinuxQuestions.

Is samba running on the CentOS box? If so make sure that both services nmbd and smbd are running. Also make sure that the firewall if running allows SMB/CIFS traffic. Can you see the CentOS server in windows networking?

Basically, samba (SMB/CIFS) name resolution to IP address is accomplished by broadcasting (UDP) the netbios name. Make sure the CentOS hostname is not localhost or more then 15 characters. Otherwise you can assign a samba netbios name via the netbios name directive in the smb.conf file.

linux by default can not resolve netbios names to IP address by default without some sort of help. Running a DNS is one solution. With distributions that install avahi you should be able ping either linux box by adding local to the host name i.e. ping hostname.local.

Another way is to change the nsswitch.conf file.
hosts: files dns wins
Old 02-29-2016, 07:26 PM   #3
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Guess you could make a hosts file entry on other machines and make these static.

Ping isn't really a very good test.


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