Home » Categories » Products » Nagios XI » Documentation » Architecture

Nagios XI - Cron Jobs

Cron Job Overview

Nagios XI includes several cron jobs that run on a regular basis to perform one or more operations or maintenance tasks. These jobs are critical to the operation of Nagios XI. An overview of the cron jobs that are part of Nagios XI are described below.

 

 

Cron Job Definition Location

Cron jobs for Nagios XI are defined in the following file on your XI server:

/etc/cron.d/nagiosxi

 

 

Individual Cron Jobs

Example contents of the /etc/cron.d/nagiosxi file from a Nagios XI 5.5.7 installation are listed below (each non-comment line corresponds to a cron job):

# /etc/cron.d/nagiosxi: crontab fragment for nagiosxi

# Backup MySQL & PostgreSQL Databases
0 7 * * * root /root/scripts/automysqlbackup
0 7 * * * root /root/scripts/autopostgresqlbackup > /dev/null 2>&1

* * * * * nagios /usr/bin/php -q /usr/local/nagiosxi/cron/sysstat.php >> /usr/local/nagiosxi/var/sysstat.log 2>&1
* * * * * nagios /usr/bin/php -q /usr/local/nagiosxi/cron/cmdsubsys.php >> /usr/local/nagiosxi/var/cmdsubsys.log 2>&1
* * * * * nagios /usr/bin/php -q /usr/local/nagiosxi/cron/eventman.php >> /usr/local/nagiosxi/var/eventman.log 2>&1
* * * * * nagios /usr/bin/php -q /usr/local/nagiosxi/cron/event_handler.php >> /usr/local/nagiosxi/var/event_handler.log 2>&1
* * * * * nagios /usr/bin/php -q /usr/local/nagiosxi/cron/feedproc.php >> /usr/local/nagiosxi/var/feedproc.log 2>&1
* * * * * nagios /usr/bin/php -q /usr/local/nagiosxi/cron/perfdataproc.php >> /usr/local/nagiosxi/var/perfdataproc.log 2>&1
* * * * * nagios /usr/bin/php -q /usr/local/nagiosxi/cron/nom.php >> /usr/local/nagiosxi/var/nom.log 2>&1
* * * * * nagios /usr/bin/php -q /usr/local/nagiosxi/cron/reportengine.php >> /usr/local/nagiosxi/var/reportengine.log 2>&1
*/5 * * * * nagios /usr/bin/php -q /usr/local/nagiosxi/cron/dbmaint.php >> /usr/local/nagiosxi/var/dbmaint.log 2>&1
* * * * * nagios /usr/bin/php -q /usr/local/nagiosxi/cron/cleaner.php >> /usr/local/nagiosxi/var/cleaner.log 2>&1
01 * * * * nagios /usr/bin/php -q /usr/local/nagiosxi/cron/recurring_downtime.php >> /usr/local/nagiosxi/var/recurringdowntime.log 2>&1
* * * * * nagios /usr/bin/php -q /usr/local/nagiosxi/cron/deadpool.php >> /usr/local/nagiosxi/var/deadpool.log 2>&1

 

 

Debugging Cron Job Problems

If cron jobs appear to not be working, you can take the following steps to troubleshoot the problem:

  • Examine the /var/log/cron log file for error messages

  • Examine the log files from the individual cron jobs - all logs will be located in the /usr/local/nagiosxi/var directory

  • Ensure the cron system daemon is running by executing the following command from a shell prompt:

    RHEL 6 | CentOS 6 | Oracle Linux 6

    service crond status 

    RHEL 7 | CentOS 7 | Oracle Linux 7

    systemctl status crond.service

    Ubuntu 14

    service cron status

    Debian | Ubuntu 16/18

    systemctl status cron.service
  • Comment out the cron jobs from the /etc/cron.d/nagiosxi file and run the raw cron job commands manually (don't forget to uncomment the jobs when you're done testing)

 

 

Cron Job Tips

If you're not familiar with cron, the cron file contains various fields that determine what command gets run and on what schedule it is run. Some helpful links for better understanding cron files are listed below:

 

 

Final Thoughts

For any support related questions please visit the Nagios Support Forums at:

http://support.nagios.com/forum/

0 (0)
Article Rating (No Votes)
Rate this article
  • Icon PDFExport to PDF
  • Icon MS-WordExport to MS Word
Attachments Attachments
There are no attachments for this article.
Related Articles RSS Feed
Nagios XI - Maximizing Performance In Nagios XI
Viewed 1500 times since Thu, Jan 28, 2016
Nagios XI - Performance Data Architecture
Viewed 1767 times since Wed, Jan 28, 2015
Nagios XI - High Availability and Failover Solutions for Nagios XI - NWC14
Viewed 2138 times since Thu, Feb 4, 2016
Nagios XI DB - Maintenance Architecture
Viewed 1718 times since Sun, Feb 8, 2015
Nagios XI - Switch and Router Wizard Architecture
Viewed 2242 times since Fri, Feb 6, 2015
Nagios XI - How to Manage Remote Nagios XI Servers
Viewed 1205 times since Thu, Jan 28, 2016
Nagios XI - Best Practices - NWC15
Viewed 2603 times since Thu, Feb 4, 2016
Nagios XI - Introduction: Getting Started with Nagios XI - NWC14
Viewed 1198 times since Thu, Feb 4, 2016
Nagios XI - Under the Hood - NWC15
Viewed 939 times since Thu, Feb 4, 2016
Nagios XI - How XI Works
Viewed 1463 times since Wed, Jul 19, 2017