usb disk not showing

Hi Kris,

in analysis.cfg you can only set thresholds for disks which are reported by
the client and thus are already visible in the disk and inode column of
your Xymon server.
If there is no USB drive and no graph, then you don't need to mess up with
server side config.
By default the Xymon client will only provide info about local disks (which
makes sense, as the remote mounted disks should be monitored at the source
and not at dozens of connected servers), and also only for fixed mounted
disks to avoid alerts if a removable media gets disconnected.
If you want to change this you have to modify the linux client script (but
as pointed out, ensure the output as Posix standard to not confuse the
server side evaluation!).
So it is no problem to remove the "l" from "df -Pl", but not the "P". You
can also remove the "-x $EXCLUDES" w/o problems.
Does a "df -P | grep USB" show your USB drive?
If yes, modify the client script and test by "./xymonclient-linux.sh | grep
USB". This also should show your USB drive.
If not, the disk is not properly mounted.

Norbert


Am Di., 29. Nov. 2022 um 17:11 Uhr schrieb Kris Springer <
user-c2caa0a7a8d5@xymon.invalid>:

Continued thanks for the responses.  I did try commenting everything out
of the analysis.cfg except for the default DISK * line, but still no
joy.  I don't think analysis.cfg is causing the USB to be ignored.  The
xymonclient-linux script has been set back to it's original state.

Kris Springer


On 11/29/22 08:28, Adam Thorn wrote:

On 29/11/2022 01:21, Kris Springer wrote:

Thanks for pointing me in the direction of the client script.  I
messed around with it a lot

I'd advise against editing the xymonclient script unless you're very
careful, because...

So then in the script with all the df stuff commented out, I had it run
df /dev/sda

...putting this in the client script will break server-side processing
because...

The results of the script show the USB, but nothing shows up on the
Server Disk page except this error.
Expected strings (Capacity and Mounted) not found in df output

..one of the df arguments specified in the original client script is
"-P" which specifies "use the POSIX output format". Compare the header
row generated by df with and without -P:

$ df | head -n1
Filesystem     1K-blocks    Used Available Use% Mounted on

$ df -P | head -n1
Filesystem     1024-blocks    Used Available Capacity Mounted on

xymond is expecting the latter format, so by manually hacking the
client script and changing the arguments, the message sent to the
server is no longer in the format it expects - which is what's leading
to that "Expected strings ... not found" message, I think.

I'd suggest putting the original client script back in place and
debugging from there. Perhaps a good place to start would be with a
very simple analysis.cfg with just two lines:

DEFAULT
  DISK * 90 95

and nothing else. If your disk then shows up in the 'disk' report, the
problem is somewhere in your live analysis.cfg. I'm not immediately
sure when analysis.cfg is reread - I can't see any mention in the
documentation, but I may not be looking in the right place.

Adam