wip/collectd-unbound 20170630 NetBSD

This utility allows you to access Unbound statistics from collectd using the exec plugin. It hasn't been thoroughly tested, use it at your own risk...

Once the collectd-unbound binary is compiled, copy it wherever you want and add the following lines to you collectd configuration:

LoadPlugin exec <Plugin "exec"> Exec "unbound" "/usr/pkg/bin/collectd-unbound" </Plugin>

Note: the utility executes the command unbound-control stats to fetch the statistics: make sure the user specified in your exec plugin block has the permissions to execute the command.