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devel / comp.lang.python / Re: Getting Syslog working on OSX Monterey

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o Re: Getting Syslog working on OSX MontereyPhilip Bloom

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Re: Getting Syslog working on OSX Monterey

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Subject: Re: Getting Syslog working on OSX Monterey
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 by: Philip Bloom - Thu, 3 Mar 2022 03:01 UTC

I'm probably asking on the wrong list, and probably should bother wherever
apple's ASL experts live for changes in monterey. Guess nobody else is
seeing this?

The same exact code is working just fine on OSX Big Sur, but on OSX
Monterey it doesn't work at all. Users that haven't updated are having the
program produce logs as it has for years through
logging.handlers.SysLogHandler. Mac OSX definitely has a listening socket
at '/var/run/syslog' which shows up in Console.app.

Apologies, Barry. I'm not quite understanding your responses.

When we say OSX has no listener for Syslog, what is the Apple System Log
and the general output to Console.app then? I thought that was the local
syslog on OSX and had, for years, been behaving as such when using
logging.handlers.SysLogHandler with a config in /etc/asl/ to define how it
should be routed and the rollover/cleanup frequency.

Thanks for replying, just having trouble understanding.

On Mon, Feb 28, 2022 at 2:07 PM Barry Scott <barry@barrys-emacs.org> wrote:

>
>
> > On 28 Feb 2022, at 21:41, Peter J. Holzer <hjp-python@hjp.at> wrote:
> >
> > On 2022-02-27 22:16:54 +0000, Barry wrote:
> >> If you look at the code of the logging modules syslog handle you will
> see that
> >> it does not use syslog. It’s assuming that it can network to a syslog
> listener.
> >> Such a listener is not running on my systems as far as I know.
> >>
> >> I have always assumed that if I want a logger syslog handler that I
> would have
> >> to implement it myself. So far I have code that uses syslog directly
> and have
> >> not written that code yet.
> >
> > What do you mean by using syslog directly? The syslog(3) library
> > function also just sends messages to a "syslog listener" (more commonly
> > called a syslog daemon) - at least on any unix-like system I'm familiar
> > with (which doesn't include MacOS). It will, however, always use the
> > *local* syslog daemon - AFAIK there is no standard way to open a remote
> > connection (many syslog daemons can be configured to forward messages to
> > a remote server, however).
>
> I'm re-reading the code to check on what I'm seeing. (Its been a long
> time since I last look deeply at this code).
>
> You can write to /dev/log if you pass that to
> SysLogHandler(address='/dev/log'), but the default is to use a socket
> to talk to a network listener on localhost:514. There are no deamons
> listening on port 514 on my Fedora systems or mac OS.
>
> That is not what you would expect as the default if you are using the C
> API.
>
> What you do not see used in the SyslogHandler() is the import syslog
> and hence its nor using openlog() etc from syslog API.
>
> Barry
>
>
>
> > hp
> >
> > --
> > _ | Peter J. Holzer | Story must make more sense than reality.
> > |_|_) | |
> > | | | hjp@hjp.at | -- Charles Stross, "Creative writing
> > __/ | http://www.hjp.at/ | challenge!"
> > --
> > https://mail.python.org/mailman/listinfo/python-list
>
> --
> https://mail.python.org/mailman/listinfo/python-list
>

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