The global configuration file contains some options that are used by the program to run: the working directory path, logging options, default values for some actions and so on.
By default, ripe-atlas-monitor looks for this file in
$HOME is not defined, it tries with
/etc/ripe-atlas-monitor/config.cfg), but this path can be set with the
--cfg command line argument.
Only one parameter is really needed, it is the
var directory used by the program to store its monitors configuration files and a bunch of other data (IP addresses cache, running status).
You can initialize the global configuration file by executing
ripe-atlas-monitor init-config: this command copies the template file to the default path. Add the
--cfg argument to use a custom path.
Comments within the file itself should be enough to explain the various options. If you want to take a look at it, you can find it on GitHub.