[Dnsmasq-discuss] Running redundant instances of dnsmasq

[Simon Kelley]

Richard Crane wrote:
> 
> On Sep 28, 2006, at 4:27 AM, Aaron Tygart wrote:
> 
>> On 9/27/06, Richard Crane <craner at haskins.yale.edu> wrote:
>>> I have brought up an instance of dnsmasq for our internal network,
>>> and it
>>> appears to be working beautifully for both DHCP and DNS. I'd like to
>>> run a
>>> second instance, for redundancy, and would appreciate any thoughts about
>>> configuring the two.
>>>
>>
>> AFAIK, dnsmasq doesn't support any sort of failover configuration.  If
>> you want redundancy, you're probably going to want to run ISC dhcpd
>> and BIND.
>>
> 
> I understand that there's no failover per se in dnsmasq.  The problem
> with bind is
> that we don't control DNS for our network, and DNsmasq lets me supply name
> service for our internal NATTed systems while passing on other name
> queries.
> 

You could implement a failover pair, using Linux-HA and heartbeat,
provided that the pair have shared storage for the leasefile. I don't
think that dnsmasq is any different from a webserver or database server
in that respect.

Using ISC dhcpd would almost certainly be easier and better.


Cheers,

Simon.