How to reach a host in the same network by hostname?

Question

I have a network which connects a couple of hosts. I would like to be able to reach other hosts from one of them using the hostname. I just discovered the ".local" domain, which is available through avahi and /etc/nsswitch.conf. But it's not set up this way on my servers. And I don't want to create an entry in my dns server. Is there an other way to do so ?

Answer 1

Your /etc/nsswitch.conf should already have this for mDNS (avahi):

hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4

Just install avahi-daemon on the machines you want talking to eachother, and you should be set to use HOSTNAME.local like this:

ssh yourmachine.local

Answer 2

An alternative is to add an entry in your /etc/hosts file:

gksudo gedit /etc/hosts

An entry takes the form 123.123.123.123 host.domain or just 123.123.123.123 host.

If you do that, you can now for example ssh host and it will connect to 123.123.123.123

Answer 3

I found another solution. Using the file, /etc/dhccp3/dhcient.conf There is a line starting like this, send host-name This could be modified to send host-name 'server1'

This solution look nice, but i don't know if the every machine which use the same dns will see my "server1" hostname.

Another bad side to this solution, i need to specify the hostname here and in the /etc/hosts

I just know that this file (/etc/dhcp3/dhclient.conf) is not a script, so i can't use a environnement variable to fill this line correctly.

Answer 4

You can let dynamic DHCP add the entry in DNS, instead of yourself.

Answer 5

if using avahi-daemon, you may need to copy ssh.services into /etc/avahi/services. On mine,

sudo cp /usr/share/doc/avahi-daemon/examples/ssh.service /etc/avahi/services/