monitoring for IO in Nagios

[Alexander Harvey]

That doesn't look like a Solaris script to me but as far as your coding is
concerned, my thoughts are

(i) get yourself a book on the k-shell 'cause it's a lot more powerful that
the bourne (/bin/sh) shell.
(ii) you can say
vmstat -dp | awk '/sda/ {print $2}'
instead of
vmstat -dp | grep sda | awk '{print $2}'
(iii) if you were using bash or ksh your could say
readdiff=$(( $currreads - $prevreads ))
instead of
readdiff=$(expr $currreads - $prevreads)
(iv) for security you ought to use full paths to all of your binaries:
i.e.
/usr/bin/echo
instead of
echo

Otherwise I guess it'll work in Nagios (although most Nagios plugins can
give warnings or critical alerts by exiting with exit codes 0 for OK, or 1
for WARNING, or 2 for CRITICAL.

Have fun,
Alex


On 10/16/06, August Simonelli <augusts at gmail.com> wrote:
>
> Hi Alexander and list folks,
>
> I set up two little shell scripts for disk i/o calculations for mrtg which
> i hope to use for nagios down the track. I'm still learning shell scripting
> /nagios / etc so i welcome corrections to my logic, coding, anything! :-)
>
> It's not really fancy, just uses vmstat to get disk reads and writes,
> stores it, then compares that the next time.
>
> As i said, it's just for mrtg now so dunno if it will work for nagios, but
> soon i'll play with it and find out.
>
> August
>
>
>
> On 10/15/06, Alexander Harvey <alexh19740110 at gmail.com> wrote:
>
> > Hi All,
> >
> > I wonder if anyone out there is using Nagios to monitor disk I/O on UNIX
> > servers and if so I'm curious as to how they're doing it, what plugins
> > they're using, are they calling iostat from a shell script? What options of
> > iostat are they calling etc?
> >
> > Many thanks in advance,
> >
> > Alex Harvey
> > UNIX Administrator
> > Sydney, Australia
> >
> >
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