Re: Ubuntu service file is missing Restart parameter

2023-02-05 Thread Blažej Krajňák
Thank you for clarification. I'm not sure, who maintains which package.

I opened bug report https://bugs.launchpad.net/ubuntu/+source/bind9/+bug/2006054

ne 5. 2. 2023 o 15:55 Ondřej Surý  napísal(a):
>
> Those are maintained by Ubuntu, not ISC, so you need to contact them.
>
> Or you can use packages provided by ISC: 
> https://kb.isc.org/docs/isc-packages-for-bind-9
>
> Ondrej
> --
> 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 5. 2. 2023, at 15:46, Blažej Krajňák  wrote:
>
> Hi Ondrej,
>
> sorry, I really thought it's clear enough, but as I just found, the
> problem presents in releases for Ubuntu 20.04, 18.04 and maybe older
> also.
>
> It's all about the content of /lib/systemd/system/named.service
>
> Release for Ubuntu Jammy 22.04 LTS (1:9.18.1-1ubuntu1.3) contains
> "Restart=on-failure" parameter.
>
> Releases for
>Ubuntu Focal 20.04 LTS (1:9.16.1-0ubuntu2.12)
>Ubuntu Bionic 18.04 LTS (1:9.11.3+dfsg-1ubuntu1.18)
> and maybe older also are missing "Restart" parameter.
>
> I found this problem with friend, when Bind9 on Ubuntu 20.04 exited
> with SIGV signal and keeps down (systemd did not restart the service).
>
>
> Thanks
>
>
> ne 5. 2. 2023 o 14:18 Ondřej Surý  napísal(a):
>
>
> Hi,
>
>
> it might seem like we do practice black magic, but we really don’t. Thus we 
> can’t really help if you don’t provide more details like the content of the 
> file, the source of the package(s), and the version of the package(s).
>
>
> Ondrej
>
> --
>
> 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 5. 2. 2023, at 13:29, Blažej Krajňák  wrote:
>
>
> Hi there,
>
>
> I just discovered that default Bind9 systemd service file for Ubuntu
>
> is missing "Restart" parameter. Is there any reason?
>
> Service file for Debian contains "Restart=on-failure"
>
>
>
> Thanks
>
> Blažej
>
> --
>
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> this list
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>
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> Contact us at https://www.isc.org/contact/ for more information.
>
>
>
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>
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>
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Re: Ubuntu service file is missing Restart parameter

2023-02-05 Thread Blažej Krajňák
Hi Ondrej,

sorry, I really thought it's clear enough, but as I just found, the
problem presents in releases for Ubuntu 20.04, 18.04 and maybe older
also.

It's all about the content of /lib/systemd/system/named.service

Release for Ubuntu Jammy 22.04 LTS (1:9.18.1-1ubuntu1.3) contains
"Restart=on-failure" parameter.

Releases for
Ubuntu Focal 20.04 LTS (1:9.16.1-0ubuntu2.12)
Ubuntu Bionic 18.04 LTS (1:9.11.3+dfsg-1ubuntu1.18)
and maybe older also are missing "Restart" parameter.

I found this problem with friend, when Bind9 on Ubuntu 20.04 exited
with SIGV signal and keeps down (systemd did not restart the service).


Thanks


ne 5. 2. 2023 o 14:18 Ondřej Surý  napísal(a):
>
> Hi,
>
> it might seem like we do practice black magic, but we really don’t. Thus we 
> can’t really help if you don’t provide more details like the content of the 
> file, the source of the package(s), and the version of the package(s).
>
> Ondrej
> --
> 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 5. 2. 2023, at 13:29, Blažej Krajňák  wrote:
> >
> > Hi there,
> >
> > I just discovered that default Bind9 systemd service file for Ubuntu
> > is missing "Restart" parameter. Is there any reason?
> > Service file for Debian contains "Restart=on-failure"
> >
> >
> > Thanks
> > Blažej
> > --
> > 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
> > bind-users@lists.isc.org
> > https://lists.isc.org/mailman/listinfo/bind-users
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Ubuntu service file is missing Restart parameter

2023-02-05 Thread Blažej Krajňák
Hi there,

I just discovered that default Bind9 systemd service file for Ubuntu
is missing "Restart" parameter. Is there any reason?
Service file for Debian contains "Restart=on-failure"


Thanks
Blažej
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Re: DNSSEC implementation on IPv6 PTR Zones

2021-11-18 Thread Blažej Krajňák
Hello

št 18. 11. 2021 o 10:28 Divya  napísal(a):

> Dear Admin,
>
> Has anybody implemented  DNSSEC on IPv6 reverse  zones?
> Kindly help us to configure DNSSEC on reverse zones of IPV6 segment with
> BIND 9.17.16+CentOS  7.9.
>
> With Thanks & Regards
> Divya
>

I can confirm working DNSSEC for IPv6 reverse zone with BIND 9.16 on Debian
11.
https://dnsviz.net/d/6.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.0.0.0.0.3.a.c.6.2.0.a.2.ip6.arpa/dnssec/
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Re: Stale cache feature problems

2021-11-11 Thread Blažej Krajňák
Hi,

št 11. 11. 2021 o 10:28 Borja Marcos  napísal(a):
> First problem: I experienced random SERVFAILS with no apparent reason while i 
> had the feature turned on. I think it
> especially affected CDNs with multiple chained CNAMES and complex DNS server 
> infrastructures.
>

glad to hear the confirmation of this problem. I experienced the same
behaviour in our ISP network. Issue  #2982
https://gitlab.isc.org/isc-projects/bind9/-/issues/2982

Please, add your conditions and findings to ticket.
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Re: Resolver failures after stale-answer enabled

2021-10-27 Thread Blažej Krajňák
https://gitlab.isc.org/isc-projects/bind9/-/issues/2982

st 27. 10. 2021 o 11:53 Blažej Krajňák  napísal(a):
>
> Hello,
>
> few days ago I updated our recursive resolvers at AS50242 from Debian
> 10 to 11 to be able to enable stale-answer afer Facebook incident.
> However, today I got bug reports from customers. Their browser often
> fail at page loading with DNS_PROBE_FINISHED_NXDOMAIN. After few
> seconds (and after browser DNS re-query) page will load correctly. In
> Bind9 log I see many of messages like:
>
> Oct 27 11:34:13 srv-snv-production named[576109]:
> configuration.ls.apple.com resolver failure, stale answer unavailable
> Oct 27 11:34:13 srv-snv-production named[576109]: client
> @0x7fc71806cd58 10.202.42.196#58876 (configuration.ls.apple.com): view
> clients: query failed (SERVFAIL) for
> configuration.ls.apple.com/IN/TYPE65 at query.c:5832
> Oct 27 11:34:13 srv-snv-production named[576109]:
> configuration.ls.apple.com resolver failure, stale answer unavailable
> Oct 27 11:34:13 srv-snv-production named[576109]: client
> @0x7fc7180715a8 10.202.42.196#49219 (configuration.ls.apple.com): view
> clients: query failed (SERVFAIL) for configuration.ls.apple.com/IN/A
> at query.c:5832
>
> After I turned off stale-answer, problem looks to be resolved. I'm
> attaching huge debug log of above failures - hope somebody will find
> problem from this. The problematic query starts at 27-Oct-2021
> 11:34:13.858
>
> https://drive.google.com/file/d/1qiyLa8CfNN54PUktth6R4kT8PpohNsde/view?usp=sharing
>
> Linux srv-le-production 5.10.0-9-amd64 #1 SMP Debian 5.10.70-1
> (2021-09-30) x86_64 GNU/Linux
> bind9/stable,now 1:9.16.15-1 amd64
>
>
> Regards,
> Blažej Krajňák
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Resolver failures after stale-answer enabled

2021-10-27 Thread Blažej Krajňák
Hello,

few days ago I updated our recursive resolvers at AS50242 from Debian
10 to 11 to be able to enable stale-answer afer Facebook incident.
However, today I got bug reports from customers. Their browser often
fail at page loading with DNS_PROBE_FINISHED_NXDOMAIN. After few
seconds (and after browser DNS re-query) page will load correctly. In
Bind9 log I see many of messages like:

Oct 27 11:34:13 srv-snv-production named[576109]:
configuration.ls.apple.com resolver failure, stale answer unavailable
Oct 27 11:34:13 srv-snv-production named[576109]: client
@0x7fc71806cd58 10.202.42.196#58876 (configuration.ls.apple.com): view
clients: query failed (SERVFAIL) for
configuration.ls.apple.com/IN/TYPE65 at query.c:5832
Oct 27 11:34:13 srv-snv-production named[576109]:
configuration.ls.apple.com resolver failure, stale answer unavailable
Oct 27 11:34:13 srv-snv-production named[576109]: client
@0x7fc7180715a8 10.202.42.196#49219 (configuration.ls.apple.com): view
clients: query failed (SERVFAIL) for configuration.ls.apple.com/IN/A
at query.c:5832

After I turned off stale-answer, problem looks to be resolved. I'm
attaching huge debug log of above failures - hope somebody will find
problem from this. The problematic query starts at 27-Oct-2021
11:34:13.858

https://drive.google.com/file/d/1qiyLa8CfNN54PUktth6R4kT8PpohNsde/view?usp=sharing

Linux srv-le-production 5.10.0-9-amd64 #1 SMP Debian 5.10.70-1
(2021-09-30) x86_64 GNU/Linux
bind9/stable,now 1:9.16.15-1 amd64


Regards,
Blažej Krajňák
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