Thruk is a multi-backend monitoring web interface that currently supports Naemon, Nagios, Icinga and Shinken as backends using the Livestatus API. It is designed to be a drop-in replacement and covers almost 100% of the original features, with additional enhancements for large installations and improved usability.

Main Features / Advantages

Thruk is written in Perl using the Plack Framework. Backend monitoring systems will be connected with the Monitoring::Livestatus Perl Module. Thruk itself is running as a fastcgi process. Availability will be calculated with Monitoring::Availability. Authentication is provided by the Apache webserver (For example with mod_auth_basic, mod_auth_ldap, mod_auth_mysql, …​).

There are a couple of cool things in Thruk. A few of them are listed here.

Thruk connects to as many cores as you want. You could even combine Naemon, Nagios, Icinga and Shinken instances into one big combined view. That way you get the advantage of several independent locations and still have an overview of all your installations. Sites can be put into groups for better arrangement.

The Thruk Panorama plugin provides a flexible dashboard solution. Every user can build their own dashboards with a few clicks and share them with colleagues. Various elements, backgrounds and images can be positioned freely without constraints. Multiple dashboards can be linked together and connected to actions. This allows you to create your own control center.

The 'reporting' plugin creates comprehensive SLA reports in HTML and PDF format which can be sent by email at regular intervals. You can also turn any page in Thruk into a recurring email report.

Using the Business Process addon allows modeling your important applications and business processes. Online editor and notifications included.

The Bookmarks feature allows you to save your searches and add them as your personal menu item. Besides the bookmarks, you can adjust the menu easily with the menu_local.conf for all users.

The Excel export creates real Excel files which can be sent by email or used to extract hostnames and other information.

The Config Tool makes it very easy to change the object configuration of your monitoring solution. It also allows you to make quick changes to your Thruk configuration, as well as managing user access via htpasswd files or adjusting your cgi.cfg.

The status pages make it very convenient to send multiple commands at once. It is even possible to send host and service commands at the same time. When rescheduling hosts and services, Thruk will wait until your check is finished and display the result as soon as the check has come back.

Remember the days when you had to guess numbers in the url to filter hosts or services. With Thruk it’s possible to quickly change your display filter. You can combine multiple filters to create whatever views you like. An Ajax search supports you, so you don’t have to guess host or service names, plus you get the power of regular expressions.

When your action_url contains /pnp4nagios/, a graph is automatically displayed for your host or service. This gives you a quick view of the performance history. The image is then linked to PNP4Nagios to get detailed information.

When your check returns multiple lines of plugin output, Thruk marks the output in blue and a click on it displays the complete output. This is especially useful for check_multi checks. In addition to that, the comments and downtimes also have a small popup with their data. So you don’t have to open the host/service page just to see who set a comment and when there is a downtime.

The Mine Map is the perfect tool to get a quick overview. It is especially useful if you have a lot of common services across your hosts. Otherwise use hostgroups or servicegroups for nice results. Normal filtering is possible too.