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rndc stops listening

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John Thurston

rndc stops listening

Running BIND 9.16.9 on CentOS 8

I have the following in my .conf
> controls {
> inet 127.0.0.1 port 953
> allow { 127.0.0.1; } keys { "mykey"; };
> inet 10.2.0.1 port 953
> allow { 10.2.3.3; 10.2.4.3; }
> keys { "threekey"; "fourkey"; };
> };

And I normally can see the named process is listening on tcp:953 on both
127.0.0.1 and 10.2.0.1. But sometimes later, I find it listening only
on 127.0.0.1. If I do an 'rndc reconfig', it starts listening again on
both addresses. Normal DNS service has continued uninterrupted.

I can't find footprints left from anything falling down. I'd could just
install a watchdog to 'reconfig' whenever port 953 stops answering, but
I'd rather figure out why it is stopping and correct the problem. To do
that, I need more information.

Am I not looking in the correct log?
Do I need to crank up the logging level for something?
If so, for what? and how high?

--
--
Do things because you should, not just because you can.

John Thurston 907-465-8591
[hidden email]
Department of Administration
State of Alaska
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John Thurston

Re: rndc stops listening

I now see this same behavior running BIND 9.16.12 on Ubuntu

I have never seen it on my instances running 9.11.x on Centos

I'd sure like to figure out why (or even when) it stops listening on
port 953. Does anyone have any suggestions?

--
Do things because you should, not just because you can.

John Thurston 907-465-8591
[hidden email]
Department of Administration
State of Alaska

On 12/11/2020 11:13 AM, John Thurston wrote:

> Running BIND 9.16.9 on CentOS 8
>
> I have the following in my .conf
>> controls {
>> inet 127.0.0.1 port 953
>>     allow { 127.0.0.1; } keys { "mykey"; };
>> inet 10.2.0.1 port 953
>>     allow { 10.2.3.3; 10.2.4.3; }
>>     keys { "threekey"; "fourkey"; };
>> };
>
> And I normally can see the named process is listening on tcp:953 on both
> 127.0.0.1 and 10.2.0.1.   But sometimes later, I find it listening only
> on 127.0.0.1.   If I do an 'rndc reconfig', it starts listening again on
> both addresses. Normal DNS service has continued uninterrupted.
>
> I can't find footprints left from anything falling down. I'd could just
> install a watchdog to 'reconfig' whenever port 953 stops answering, but
> I'd rather figure out why it is stopping and correct the problem. To do
> that, I need more information.
>
> Am I not looking in the correct log?
> Do I need to crank up the logging level for something?
> If so, for what? and how high?
>

_______________________________________________
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Ondřej Surý

Re: rndc stops listening

John,

please report the issue to the ISC GitLab.

Thanks,
--
Ondřej Surý — ISC (He/Him)

My working hours and your working hours may be different. Please do not feel obligated to reply outside your normal working hours.

> On 7. 4. 2021, at 19:32, John Thurston <[hidden email]> wrote:
>
> I now see this same behavior running BIND 9.16.12 on Ubuntu
>
> I have never seen it on my instances running 9.11.x on Centos
>
> I'd sure like to figure out why (or even when) it stops listening on port 953. Does anyone have any suggestions?
>
> --
> Do things because you should, not just because you can.
>
> John Thurston 907-465-8591
> [hidden email]
> Department of Administration
> State of Alaska
>
>> On 12/11/2020 11:13 AM, John Thurston wrote:
>> Running BIND 9.16.9 on CentOS 8
>> I have the following in my .conf
>>> controls {
>>> inet 127.0.0.1 port 953
>>> allow { 127.0.0.1; } keys { "mykey"; };
>>> inet 10.2.0.1 port 953
>>> allow { 10.2.3.3; 10.2.4.3; }
>>> keys { "threekey"; "fourkey"; };
>>> };
>> And I normally can see the named process is listening on tcp:953 on both 127.0.0.1 and 10.2.0.1. But sometimes later, I find it listening only on 127.0.0.1. If I do an 'rndc reconfig', it starts listening again on both addresses. Normal DNS service has continued uninterrupted.
>> I can't find footprints left from anything falling down. I'd could just install a watchdog to 'reconfig' whenever port 953 stops answering, but I'd rather figure out why it is stopping and correct the problem. To do that, I need more information.
>> Am I not looking in the correct log?
>> Do I need to crank up the logging level for something?
>> If so, for what? and how high?
> _______________________________________________
> Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list
>
> ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information.
>
>
> bind-users mailing list
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