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linuxdnsdhcpavahidns-sd

Is it possible to collect .local domain ip addresses hierarchically for building dhcp based dns?

Suppose you are in normal dhcp environment,

You'll get an ip address like:

  • 192.168.0.101 for linuxpc1.localdomain on segment A
  • 192.168.1.102 for linuxpc2.localdomain on segment B

I want to look them up by only installing avahi on those linuxpcs with hostname set.

So on 192.168.2.103 linuxpc3.localdomain, running

ping linuxpc1.local

would work.

What is the easiest way realizing this not affecting the dhcp server settings?

Or if this is difficult, at least I would want to know the ip address for the name running a script from linuxpc3.localdomain host.

getipbyname-avahi.py linuxpc1.local
-> returns 192.168.0.101

I don't want to setup NIS or LDAP or SQL ... I thought reusing avahi capability of resolving dhcped ip address is good to start.

Solution

  • Why don't you just enable DNS updates in DHCP ?

    Something like

    ddns-updates                on;
ddns-update-style           interim;
ddns-domainname             "network.athome.";
ddns-rev-domainname         "in-addr.arpa.";

    in your dhcpd.conf (I'm assuming you use ISC's) and it will update the DNS.

    If you can't change the dhcp configuration probably you can use nsupdate in a client script hook.