Hello,
If the contents you shared were created by crond then problem might be
that at the time when Monitorix reads the files they are truncated,
since the crond takes some time to create them and Monitorix tries to
read both files around the sezond zero.
I'd recommend you to prefix the lines in your scripts with a 'sleep 10',
to make sure that Monitorix reads the previous values before the files
get truncated,
Let me know if that worked for you.
Regards.
On 8/14/25 10:48, wilson rodrigues wrote:
Hello,
The two files which I shared were created by cron. I will troubleshoot
the cron issue and check monitorix configuration once more.
Thanks for your understanding and support.
----------------
To: wilson rodrigues (wrodrigues...@yandex.com), monitorix-
gene...@lists.sourceforge.net (monitorix-general@lists.sourceforge.net);
Subject: [Monitorix-general] [SPAM] want to monitor ping with monitorix;
14.08.2025, 14:11, "Jordi Sanfeliu" <jo...@fibranet.cat>:
Hello,
If running the scripts manually the graphs are created successfully then
the problem is in your crond daemon, not in Monitorix.
Don't show me the contents of these two files after executing the
scripts manually since we already know that it works this way. Please,
remove these files and let your crond create them, and then read their
contents and see if are correct.
Besides this, I see some errors in your log file that makes me think
that your configuration file is either outdated or you removed a lot of
lines from it, which is not recommended.
Please, read the FAQ <https://www.monitorix.org/faq.html#Q107
<https://www.monitorix.org/faq.html#Q107>> to know
how to configure Monitorix properly.
Regards.
On 8/14/25 10:30, wilson rodrigues wrote:
Hello,
I misunderstood the purpose of running in parallel two cron
jobs. Please
find attached the monitorix log
cat /tmp/ping1_results.txt
1.724
cat /tmp/ping2_results.txt
1.380
Please note running the scripts manually displays the graphs
properly.
----------------
To: wilson rodrigues (wrodrigues...@yandex.com
<mailto:wrodrigues...@yandex.com>), monitorix-
gene...@lists.sourceforge.net
<mailto:gene...@lists.sourceforge.net> (monitorix-
gene...@lists.sourceforge.net <mailto:monitorix-
gene...@lists.sourceforge.net>);
Subject: [Monitorix-general] [SPAM] want to monitor ping with
monitorix;
14.08.2025, 13:21, "Jordi Sanfeliu" <jo...@fibranet.cat
<mailto:jo...@fibranet.cat>>:
Hello,
The recommendation to use two commands is to have them run
in parallel
instead of serial. Hence you can have multiple cron jobs
running at the
same time. This suggestion didn't have any relationship
with the errors
in your log file.
What are the contents of the files '/tmp/
ping1_results.txt' and
'/tmp/ping2_results.txt'?
Also, please, paste you Monitorix log file.
Regards.
On 8/14/25 09:46, wilson rodrigues wrote:
Hello,
I have now separated two commands in two shell
scripts and
having error
repeating twice in log. I have installed fcron on my
slackware
system.
Use of uninitialized value $val in division (/) at /
usr/lib64/
monitorix/
gensens.pm line 156.
* * * * * root sh /root/bin/monitorix_ping1_gensens.sh
* * * * * root sh /root/bin/monitorix_ping2_gensens.sh
cat /etc/monitorix/conf.d/local.conf
# GENSENS graph
# Added on 2025-08-13
#
-----------------------------------------------------------------------------
<gensens>
<list>
0 = temp0
1 = temp1
</list>
<title>
0 = Pings1
1 = Pings2
</title>
<desc>
temp0 = /tmp/ping1_results.txt
temp1 = /tmp/ping2_results.txt
</desc>
<unit>
temp0 = 1
temp1 = 1
</unit>
<map>
temp0 = ping to ping1_results
temp1 = ping to ping2_results
</map>
<alerts>
</alerts>
rigid = 0, 0, 2
limit = 100, 100, 100
</gensens>
----------------
To: monitorix-general@lists.sourceforge.net
<mailto:monitorix-general@lists.sourceforge.net>
<mailto:monitorix <mailto:monitorix>-
gene...@lists.sourceforge.net
<mailto:gene...@lists.sourceforge.net>> (monitorix-
gene...@lists.sourceforge.net <mailto:gene...@lists.sourceforge.net>
<mailto:gene...@lists.sourceforge.net
<mailto:gene...@lists.sourceforge.net>>);
Cc: Jordi Sanfeliu (jo...@fibranet.cat
<mailto:jo...@fibranet.cat>
<mailto:jo...@fibranet.cat <mailto:jo...@fibranet.cat>>);
Subject: [Monitorix-general] [SPAM] want to monitor
ping with
monitorix;
14.08.2025, 12:45, "Jordi Sanfeliu via Monitorix-
general"
<monitorix-
gene...@lists.sourceforge.net <mailto:gene...@lists.sourceforge.net>
<mailto:gene...@lists.sourceforge.net
<mailto:gene...@lists.sourceforge.net>>>:
Hello,
If you use only a single script to execute these two
commands you must
keep in mind that the second command will be
executed 5
seconds later.
That won't scale well if you plan to track more
pings.
Better use a
crontab line for each command.
I don't know that is 'fcron', I only have
'cronie' in my
Fedora.
Regarding the error in the log file, can you,
please,
paste here the
section <gensens> from your configuration file?
Regards.
On 8/14/25 08:30, wilson rodrigues wrote:
I am using this command as per https://
www.monitorix.org/ <https://www.monitorix.org/> <https://
www.monitorix.org/ <https://www.monitorix.org/>>
faq.html <https://www.monitorix.org/faq.html
<https://www.monitorix.org/faq.html> <https://
www.monitorix.org/faq.html <https://www.monitorix.org/faq.html>>>
<https://www.monitorix.org/faq.html
<https://www.monitorix.org/faq.html> <https://
www.monitorix.org/faq.html <https://www.monitorix.org/faq.html>>
<https://
www.monitorix.org/faq.html <https://www.monitorix.org/faq.html>
<https://www.monitorix.org/ <https://www.monitorix.org/>
faq.html>>> (Is there an easy way to integrate
a ping statistic?)
|ping -c 5 -nq 8.8.8.8 | tail -1 | awk
'{if ( $4 ==
"" ) { print
"0/0/0/0" } else { print $4}}' | awk -F /
'{print
$2 }' > /tmp/
ping1_results.txt ping -c 5 -nq 8.8.4.4 |
tail -1 |
awk '{if
( $4 ==
"" ) { print "0/0/0/0" } else { print
$4}}' | awk -
F / '{print
$2 }' > /
tmp/ping2_results.txt |
I have created a shell script with above
commands.
When the
script is
run manually it is working fine. Getting
the two
graphs in
monitorix.
But when same script is run in fcron only
ping2 graph is
displaying
correctly. My crontab entry is
* * * * * root sh /root/bin/
monitorix_ping_gensens.sh
Error in /var/log/monitorix is Use of
uninitialized
value $val in
division (/) at /usr/lib64/monitorix/
gensens.pm line
156.
What I have tried: Disabling fcron entry
and running
script
manually
works fine. With fcron only ping2 graph is
working.
Sincerely,
Wilson Rodrigues
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FIBRANET Network Services Provider
https://www.fibranet.cat <https://www.fibranet.cat/> <https://
www.fibranet.cat/ <https://www.fibranet.cat/>> <https://
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Sincerely,
Wilson Rodrigues
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FIBRANET Network Services Provider
https://www.fibranet.cat <https://www.fibranet.cat/> <https://
www.fibranet.cat/ <https://www.fibranet.cat/>>
Sincerely,
Wilson Rodrigues
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Sincerely,
Wilson Rodrigues
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