[arm-allstar] logging ideas.. was: update has an error

[Paul Aidukas]

I use Doug's trimlog.sh program.  Since "/var/log" is in RAM this never
touches the SD card.

My root crontab entry:

# Logging/trimming:
03 */6 * * * (/usr/local/sbin/trimlog.sh /var/log/httpd/access_log 500
>/dev/null 2>&1)
07 */6 * * * (/usr/local/sbin/trimlog.sh /var/log/httpd/error_log 500
>/dev/null 2>&1)
10 */6 * * * (/usr/local/sbin/trimlog.sh /var/log/asterisk/messages 500
>/dev/null 2>&1)
14 */6 * * * (/usr/local/sbin/trimlog.sh /var/log/asterisk/connectlog 500
>/dev/null 2>&1)

Paul


On Fri, Jul 28, 2017 at 11:37 AM, "Tom Hayward via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> You can do something like this after it has rotated:
>
> LOG=$(tail -n $LOWWATER log.1; cat log)
>
> Tom KD7LXL
>
> On Fri, Jul 28, 2017 at 8:34 AM, David McGough <kb4fxc at inttek.net> wrote:
> >
> > All the syslog utilities that I'm readily familiar with aren't as smart
> as
> > I'd like;  these common tools will rotate all log entries into the waste
> > basket after a period of time and leave the administrator looking at
> empty
> > files....Ideally, the mechanism would always keep at least the amount of
> > log data specified by the low water mark setting...
> >
> > Anyhow, we'll figure out some strategy!
> >
> > 73, David KB4FXC
> >
> >
> >
> > On Fri, 28 Jul 2017, Tom Hayward wrote:
> >
> >> I definitely had something more simple in mind, like checking the
> >> return code of processes started by the menu.
> >>
> >> Most syslog utilities support log rotation on both size and time. I
> >> haven't looked at which one you use in Hamvoip, but it could probably
> >> be configured with the buffer capability you describe.
> >>
> >> Tom KD7LXL
> >>
> >> On Fri, Jul 28, 2017 at 7:52 AM, David McGough <kb4fxc at inttek.net>
> wrote:
> >> >
> >> > Hi Tom,
> >> >
> >> > I agree that in certain scenarios additional debugging info or logs
> would
> >> > be very useful, as you suggest. As we all know, logs can also be a
> >> > problem, if allowed to grow without maintenance....I recently had a
> low
> >> > memory issue due to logs on a busy RPi3 that had been up continuously
> for
> >> > 2+ months.
> >> >
> >> > Ideally, application messages and those generated from Admin Menu
> >> > operations would get stored in a circular buffer, which could then be
> >> > queried from a menu option. There are already several tools which
> could be
> >> > used, but, I'd like to have a little more flexibility---perhaps a
> >> > ring-buffer log that has a low and high water mark, but also includes
> a
> >> > timestamp. So, the plan would be to weight the size of the buffer,
> between
> >> > the water marks, based on the age of the log entries. The log would be
> >> > allowed to grow up to the high water mark in bursts, but then would
> shrink
> >> > back to the low mark after a period of time.
> >> >
> >> > Do you (or anyone?) know of an ready-to-use tool that'll do this???
> >> >
> >> >
> >> > 73, David KB4FXC
> >> >
> >> >
> >> > On Thu, 27 Jul 2017, "Tom Hayward via arm-allstar" wrote:
> >> >
> >> >> On Thu, Jul 27, 2017 at 9:24 AM, "C B via arm-allstar"
> >> >> <arm-allstar at hamvoip.org> wrote:
> >> >> >
> >> >> > Thanks
> >> >> > would you consider having the error messages stay on the screen
> until a OK button is pressed?
> >> >> > this may be helpful.
> >> >> > Chris
> >> >>
> >> >> That would be really helpful for any admin menu command that returned
> >> >> an error. The other day when I was affected by the buffer overflow
> bug
> >> >> for long hostnames, the observed behavior was that clicking
> >> >> simpleusb-tune-menu in the menu would immediately go back to the
> menu.
> >> >> I had to run the command from a bash shell before I could see that
> >> >> there was an error message and non-zero return code. Luckily I was
> the
> >> >> one working on it because the repeater owner I was working with isn't
> >> >> as familiar with Linux and probably wouldn't have thought to try
> that.
> >> >> The admin menu hides the complexity of bash, but in its current form
> >> >> it also hides all of the error detection and reporting functionality
> >> >> we have in bash.
> >> >>
> >> >> Tom KD7LXL
> >> >> _______________________________________________
> >> >>
> >> >> arm-allstar mailing list
> >> >> arm-allstar at hamvoip.org
> >> >> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >> >>
> >> >> Visit the BBB and RPi2/3 web page - http://hamvoip.org
> >> >>
> >> >
> >>
> >
> _______________________________________________
>
> arm-allstar mailing list
> arm-allstar at hamvoip.org
> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>
> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>



-- 

Paul / KN2R