slave_results.fetch_hash.each_pair do |key, value|
          if metrics['general'].include?(key)
            # Replication lag being null is bad, very bad, so negativate it here
            value = -1 if key == 'Seconds_Behind_Master' && value.nil?
            output "#{config[:scheme]}.#{mysql_shorthostname}.general.#{metrics['general'][key]}", value