If you are building Icinga from the source, you should have the GCC compiler and some libraries; Icinga will prompt for these during compilation if they are not found. Apart from that, you would need to have a functioning web server for the web interface.
We will need the following before we can start with the installation:
nagios-plugins
package for most distributions)mail/mailx
commands workAfter we have these, we can move on to the download and installation steps.
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