Module_crontab sintax rules

[f-alemauro]

Hello,
first of all thank you for your amazing work, I'm using pandorafms tool to remotely monitoring IoT sensors and it works great!

But, I'm facing a strange issue with module_crontab syntax. I'm trying to setup a check that runs every five minutes, so I'm setting up a module with

"module_crontab */5 * * * * command"
or
"module_crontab 0,5,10,15,20,25,30.....,50,55 * * * * command"

but the pandorafms service keep saying that the crontab expression is not correct.
I'm pretty sure it is. How should the expression be? Are there any limitations to the cron expression?

I'm running a pandora agent V"7.0NG.759" (downloaded from this link https://sourceforge.net/projects/pandora/files/Pandora%20FMS%207.0NG/759/Tarball/) on Raspberri PI 4 with Raspbian Buster.

[JimmyOlano]

¡Hi!

From official DokuWiki:

https://pandorafms.com/manual/en/documentation/02_installation/05_configuration_agents#module_crontab

You need put command in another line with module_exec, full example:

 module_begin
 module_name crontab_test
 module_type generic_data
 module_exec script.sh
 module_crontab * 12-15 * * 1
 module_end

[f-alemauro]

Tried but didn't work:

Incorrect cron syntax '*/5 * * * *'. This module (module Database_events) will be executed always

This is the module

module_begin
module_name Database_events
module_type generic_data
module_exec sqlite3 ****etc etc
module_condition > 60 systemctl restart easycounter.service; systemctl restart webinterface.service; systemctl restart nginx.service
module_group Database
module_description Check the presence of line events; returns the number of minutes since last line event. It restarts the service in case of critical condition
module_min_warning 30
module_max_warning 59
module_min_critical 60
module_max_critical 1440
module_max 1440
module_min 0
module_crontab */5 * * * *
module_end

[JimmyOlano]

(🤔 Interesting Sqlite3 example: module_exec sqlite3 temp.db "SELECT abs(random() % 1440);" ).

module_crontab */5 * * * *

Step values are not documented... but default time for agents is 300 seconds, maybe you do not need module_crontab command.

[f-alemauro]

(🤔 Interesting Sqlite3 example: module_exec sqlite3 temp.db "SELECT abs(random() % 1440);" ).

😁

Step values are not documented...

Do you mean I cannot use it?

but default time for agents is 300 seconds, maybe you do not need module_crontab command.

What if my default agent time is 30 seconds but I need this module to run every 300secs?

What I'm trying to achieve is running this module every 5 minutes (regardless the default agent time) from 10am to 12am and from 3pm to 8pm.

[f-alemauro]

Hi!
Is there any syntax reference for crontab expression in PandoraFMS?

Thanks

[fbsanchez]

Hi, use 5,10,15.... seems its not allowed yet to use wildcards :(

[f-alemauro]

thank you @fbsanchez, I'll stick with the list!