Icinga 2 command definitions can seem daunting at first. This blog post provides a quick introduction to some of the concepts you need to be familiar with when writing your own command definitions. In their most basic form command definitions need a command line: object CheckCommand "my_http" { import "plugin-check-command" command = [ PluginDir + "/check_http" ] } The "plugin-check-command" template tells Icinga how to execute commands, i.e. by executing an external plugin. There are a few...