O'Reilly logo

Nagios, 2nd Edition by Wolfgang Barth

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

8.4 Checking Host or Service Clusters as an Entity

Plugins normally check an individual host or service, compare the result with the specified thresholds, and then return an appropriate result. On systems with redundant designs (such as in clusters) you can also check the respective host or service individually. In addition, a check of the virtual host or service provides a clue as to whether or not the virtual system as a whole is reachable. The plugin check_cluster allows more complex values to be queried.

As an example, we will take a host cluster consisting of five identical single systems. One of these hosts may fail without any problem, but if a second one fails, the plugin should issue a WARNING. If a third host should fail, a CRITICAL should ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required