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

[David McGough]

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
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