BIND and ulimit's on Linux

2017-09-05 Thread Browne, Stuart via bind-users
Hi, Just a quick question. I've recently run in to another daemon (not associated with BIND) that inherited its 'nofile' ulimit before dropping privileges and was wanting to confirm that BIND doesn't work this way. On some of our servers (zone distribution points) where lots of AXFR's (over L

Re: Strange recursor response time pattern

2017-09-05 Thread Havard Eidnes
>> some further local discussion has made me aware that us running >> "collectd" for monitoring BIND may be contributing to the >> problem; collectd fetches data each 10s by using the BIND- >> configured statistics-channel, thus BIND is processing a TCP >> connection to deliver the statistics data.

Re: Strange recursor response time pattern

2017-09-05 Thread Matthew Pounsett
On 5 September 2017 at 11:56, Havard Eidnes wrote: > Hmm... > > some further local discussion has made me aware that us running > "collectd" for monitoring BIND may be contributing to the > problem; collectd fetches data each 10s by using the BIND- > configured statistics-channel, thus BIND is pr

Re: Strange recursor response time pattern

2017-09-05 Thread Ray Bellis
On 05/09/2017 16:56, Havard Eidnes wrote: > Hmm... > > some further local discussion has made me aware that us running > "collectd" for monitoring BIND may be contributing to the > problem; collectd fetches data each 10s by using the BIND- > configured statistics-channel, thus BIND is processing a

Re: Strange recursor response time pattern

2017-09-05 Thread Havard Eidnes
Hmm... some further local discussion has made me aware that us running "collectd" for monitoring BIND may be contributing to the problem; collectd fetches data each 10s by using the BIND- configured statistics-channel, thus BIND is processing a TCP connection to deliver the statistics data. It's

Re: Strange recursor response time pattern

2017-09-05 Thread Matus UHLAR - fantomas
On 05.09.17 16:44, Havard Eidnes wrote: It seems that every 10s, "on the clock", BIND will temporarily increase the query response time rather drastically for a short while, only to settle down to normal behaviour until the next 10s event. Any idea what might be causing this? Anything I can d

Strange recursor response time pattern

2017-09-05 Thread Havard Eidnes
Hi, one of my users made me aware of this rather unexpected behaviour in our recursors running BIND 9.10.5-P3 on NetBSD/amd64: It seems that every 10s, "on the clock", BIND will temporarily increase the query response time rather drastically for a short while, only to settle down to normal behavi