Windows: Rotating the log file

RayG rgsub1 at
Wed Jan 13 18:32:09 UTC 2021

Sorry Eric,


I don’t want to clutter up my system with unwanted software. Cygwin should not be required. The solution should be native to windows if windows is supported.




From: Erik Dobák <erik.dobak at> 
Sent: 13 January 2021 16:59
To: RayG <rgsub1 at>
Cc: Jaap Akkerhuis <jaap at>; unbound-users at
Subject: Re: Windows: Rotating the log file




On Wed, 13 Jan 2021 at 17:57, RayG via Unbound-users <unbound-users at <mailto:unbound-users at> > wrote:

Hi Jaap

So who in NLnetlabs works on Windows? 

Someone must know how the offering for windows works, it is a downloadable offering on your website and works well from what I have seen.


-----Original Message-----
From: Jaap Akkerhuis <jaap at <mailto:jaap at> > 
Sent: 13 January 2021 15:28
To: RayG <rgsub1 at <mailto:rgsub1 at> >
Cc: unbound-users at <mailto:unbound-users at> 
Subject: Re: Windows: Rotating the log file

 "RayG" writes:

 > Having installed a syslog server on my system and as far as I can tell its working in itself. What I cannot find out is where unbound it trying to send messages to. At this point in time it would appear to be the event log which is not what I was expecting use_syslog I would have expected it to go to the local system UDP/TCP on port 514 but that does not seem to be happening.
 > It is not at all helpful to clutter up the eventlog Administrative events with a whole load of unbound error messages (these come from "REFUSED" lookups.

So that apparently listens to port 514.
 > Thinking about this further I would perhaps have expected to see some form of configuration as to where to send syslog messages but again I have found no useful information.
 > So I have to say at this time the windows implementation writing to a physical file seems to be the best option.
 > Perhaps Jaap can shed some light on how syslog is supposed to work on windows and what I can do to facilitate rotating log files given that most of what I have tried and has been suggested has not resulted in a positive outcome.

No, I cann't. I'm not a Windows user so I wouldn't know. If nobody else on this list answers, I suggest you take this to a "how to run windows" list. Or just try google.


 > -----Original Message-----
 > From: Joe Abley <jabley at <mailto:jabley at> >  > Sent: 12 January 2021 16:55  > To: RayG <rgsub1 at <mailto:rgsub1 at> >  > Cc: unbound-users at <mailto:unbound-users at>   > Subject: Re: Windows: Rotating the log file  >  > On 12 Jan 2021, at 11:53, RayG via Unbound-users <unbound-users at <mailto:unbound-users at> > wrote:
 > > I took a look at some of those offerings and there does not seem to be  > > a "free" one at all. They all want money and at £100 or there abouts,  > > that's a bit too much just to get unbound's logging to rotate neatly.
 > >
 > > I did try and install one and from what I understand, I comment the "#  > > logfile:" entry and enable the "use-syslog: yes" and it should all  > > work. But I had no luck in getting this to function as it should.
 > Perhaps consider whether Windows is the best platform to be running unbound on?
 > Joe



i googled that for you and here they say:

install cygwin and run logrotat as you would do on linux. (or i guess you could use that integrated linux on windows?)

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