Re: [Monitorix-general] [SPAM] want to monitor ping with monitorix

[Jordi S. <jo...@fi...>]

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: mon...@li... (monitorix- 
> ge...@li...);
> Cc: Jordi Sanfeliu (jo...@fi...);
> Subject: [Monitorix-general] [SPAM] want to monitor ping with monitorix;
> 14.08.2025, 12:45, "Jordi Sanfeliu via Monitorix-general" <monitorix- 
> ge...@li...>:
> 
>     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/
>         faq.html <https://www.monitorix.org/faq.html>
>           <https://www.monitorix.org/faq.html <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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>         ge...@li...>
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> 
>     --
>     Jordi Sanfeliu
>     FIBRANET Network Services Provider
>     https://www.fibranet.cat <https://www.fibranet.cat/>
> 
> 
> 
>     _______________________________________________
>     Monitorix-general mailing list
>     Mon...@li... <mailto:Monitorix-
>     ge...@li...>
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>     <https://lists.sourceforge.net/lists/listinfo/monitorix-general>
> 
> Sincerely,
> Wilson Rodrigues

-- 
Jordi Sanfeliu
FIBRANET Network Services Provider
https://www.fibranet.cat

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