[Dnsmasq-discuss] Running redundant instances of dnsmasq
Simon Kelley
simon at thekelleys.org.uk
Thu Sep 28 15:52:07 BST 2006
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.
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