[Dnsmasq-discuss] Max num of concurrent dns reached troubleshootting

[Simon Kelley]

Sounds like you're just tickling the limit. Maybe just increase it with

--dns-forward-max


Cheers,

Simon.


On 19/01/18 07:30, john doe wrote:
> Hi Simon, bottom posting.
> 
> On 1/18/2018 11:16 PM, Simon Kelley wrote:
>> Use log-queries to see what's happening. You should be looking for
>> outgoing queries which don't see an answer.
>>
>>
>> Cheers,
>>
>> Simon.
>>
>>
>> On 16/01/18 15:34, john doe wrote:
>>> Hi,
>>>
>>> First of all a big thank you for dnsmasq.
>>> It's an easy dhcp, dns, read only tftp server to configure.
>>>
>>>
>>> On a perimeterfirewall the logs gets flutted with the following:
>>> Jan 15 22:32:23 dnsmasq[546]: Maximum number of concurrent DNS queries
>>> reached (max: 150)
>>> Jan 16 00:06:34 dnsmasq[546]: Maximum number of concurrent DNS queries
>>> reached (max: 150)
>>>
>>> Note that only one server (gateway) is connected to the
>>> perimeterfirewall.
>>>
>>> How can I determine wherein lies  the problem (perimeterfirewall or
>>> gateway)?
>>>
>>> In other words: what should I do to understand what's triggering those
>>> messages.
>>>
>>> Both the gateway and the perimeterfirewall are on Debian 9 using:
>>> dnsmasq, systemd-resolved and resolvconf(8).
>>>
>>> -John
>>
>>
>>
>>
>> _______________________________________________
>> Dnsmasq-discuss mailing list
>> Dnsmasq-discuss at lists.thekelleys.org.uk
>> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
>>
> 
> Thanks for your answer.
> The issue I'm facing is not occuring all the time and I'm wandering if
> 'log-queries' could be only passed to dnsmasq when those messages are
> logged.
> 
> In other words: How can I pass options to an already running instance of
> dnsmasq.
> 
> I really appriciate any help! :)
> 


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