[smokeping-users] Smokeping stop generate graph on Debian Stretch - Fping exited unexpectedly with status 256

[ITheodoridis at bankofgreece.gr]

Hello.
I don't have any experience with Debian but in OpenSuSE and Ubuntu, also in Rasbian (Rasberry PI deviant of Debian) fping needs to be setuid root, or you get the same behavior (no data).
Try and get a listing for fping with a similar command to this (depending on fping's location):
ls -al /usr/bin/fping
if you get something like this (not the s after the w) it should be fine:
-rwsr-xr-x 1 root root 30460 Aug 13  2014 /usr/bin/fping
If not, the you need to do the following:

chown root:root /usr/bin/fping
chmod u+s /usr/bin/fping

Btw the solution to this is not mine. Someone using FreeBSD had a similar problem and Tobi (the well know Tobi) answered him so I have kept that answer in my notes.
Here it is in full:
> Hello,
>
> I just tried upgrading fping on a FreeBSD host I have smokeping
> 2.6.7 running on and (to fping 3.4) and I noticed the graphs
> broke. I dug a little deeper and found that fping won't run as
> requested due to the smokeping process being run under an
> unprivileged user. If I run the fping command as smokeping
> attempts as root, it will succeed. Otherwise I get a can't create
> raw socket error.
>
> Is there a quick fix for this (other than obviously running
> smokeping as root)? Can I give my smokeping user access to raw
> sockets somehow or have smokeping spawn the fping process with
> higher privileges?

I guess you have to install fping setuid root:

chown root:root /usr/sbin/fping
chmod u+s /usr/sbin/fping

cheers
tobi

So there you go, I hope it helps.
Good luck! 
Yannis.

-----------------------------------------------------
Ioannis Theodoridis
Network & Systems Engineer
Network & Telecommunications Support
Informatics
Bank of Greece
-----------------------------------------------------




-----Original Message-----
From: Marek Królikowski [mailto:admin at wset.edu.pl] 
Sent: Wednesday, July 12, 2017 11:26 AM
To: smokeping-users at lists.oetiker.ch
Subject: [smokeping-users] Smokeping stop generate graph on Debian Stretch - Fping exited unexpectedly with status 256

Hello
I just install fresh version of Debian 9 and install Smokeping.
Today i saw graph stop generate at 10:07 and in logs got it:

Jul 12 10:07:57 smokeping smokeping[96150]: Alert bigloss is active for HOME.HOME Jul 12 10:07:57 smokeping smokeping[96150]: Wide character in syswrite at /usr/share/perl/5.24/Net/Cmd.pm line 212.
Jul 12 10:07:57 smokeping smokeping[96149]: Child process 96150 (probe
FPing) exited unexpectedly with status 256.

I use Smokeping 2.6.11-3 from Debian Stretch Portage.

The most funny Smokeping process working but no smokeping [FPing] process :-( root at smokeping:~# ps aux |grep smokeping
smokepi+  96149  0.0  0.9 230844 37600 ?        Ss   09:48   0:00 
/usr/bin/perl /usr/sbin/smokeping --config=/etc/smokeping/config

Best Regards
TaKeN

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