nagios user crontab enteries

[TSCAdmin]

Hello,

I was just wondering what are the following crontab entries for:

######################################
# Nagios XI Cron Jobs - Run as nagios user
######################################
* * * * * /usr/bin/php -q /usr/local/nagiosxi/cron/sysstat.php > /usr/local/nagiosxi/var/sysstat.log 2>&1
* * * * * /usr/bin/php -q /usr/local/nagiosxi/cron/cmdsubsys.php > /usr/local/nagiosxi/var/cmdsubsys.log 2>&1
* * * * * /usr/bin/php -q /usr/local/nagiosxi/cron/eventman.php > /usr/local/nagiosxi/var/eventman.log 2>&1
* * * * * /usr/bin/php -q /usr/local/nagiosxi/cron/feedproc.php > /usr/local/nagiosxi/var/feedproc.log 2>&1
* * * * * /usr/bin/php -q /usr/local/nagiosxi/cron/nom.php > /usr/local/nagiosxi/var/nom.log 2>&1
* * * * * /usr/bin/php -q /usr/local/nagiosxi/cron/reportengine.php > /usr/local/nagiosxi/var/reportengine.log 2>&1
*/5 * * * * /usr/bin/php -q /usr/local/nagiosxi/cron/dbmaint.php > /usr/local/nagiosxi/var/dbmaint.log 2>&1
* * * * * /usr/bin/php -q /usr/local/nagiosxi/cron/cleaner.php > /usr/local/nagiosxi/var/cleaner.log 2>&1
01 * * * * /usr/local/nagiosxi/cron/recurringdowntime.pl > /usr/local/nagiosxi/var/recurringdowntime.log 2>&1

are there any documentations which helps us understand what these scripts are doing?

Thanks.

[admin]

The cron jobs aren't documented, but you can look at their contents to see what they do. Essentially, they are the backend magic that makes things work on XI. Here's a quick explanation:

1. sysstat.php = Polls the system for load, CPU, i/o wait statistics, so its visible in the XI admin interface
2. cmdsubsys.php = Handles backend "commands" that are usually submitted from the fronted. For example, applying a new Nagios configuration.
3. eventman.php = Captures and processes events (event handlers and notifications) from Nagios Core, so they can be processed by XI
4. feedproc.php = As of yet unused, but will be utilized for processing passive checks in the future
5. nom.php = Nonstop Operations Manager. This ensures that Nagios is rolled back to a last know good configuration if an error is encountered.
6. reportenginge.php = As of yet unused, but will be utilized for scheduled reports in the future
7. dbmaint.php = Keeps the MySQL and Postgres databases optimized, analyzed, and vacuumed
8. cleaner.php = Cleans out old/unused files from various temp directories
9. recurringdowntime.pl = Handles recurring downtime entries that are defined by the user

Hope that helps!

[TSCAdmin]

That really helped, cheers