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Icinga is an enterprise grade open source monitoring system which keeps watch over networks and any conceivable network resource, notifies the user of errors and recoveries and generates performance data for reporting. Scalable and extensible, Icinga can monitor complex, large environments across dispersed locations.
I am going with the Icinga basic installation and this is similar to Nagios and this document can also be referred for Nagios installation, too. Lots of documents are available on the Internet and they will be installing with nagios user but for my setup I made use of the default user which is already present in the system (daemon) and also I will not be installing it on the default path instead I will be referring to /opt since I find it very convenient. The UI of Icinga is much better than Nagios.
In this tutorial I will using three servers:
192.168.1.20
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