new_contents: #!/usr/bin/env python
  import maas_common
  
  
  def get_value(path):
      with open(path) as f:
          value = f.read()
      return value.strip()
  
  
  def get_metrics():
      metrics = {
          'nf_conntrack_count': {
              'path': '/proc/sys/net/netfilter/nf_conntrack_count'},
          'nf_conntrack_max': {
              'path': '/proc/sys/net/netfilter/nf_conntrack_max'}}
  
      for data in metrics.viewvalues():
          data['value'] = get_value(data['path'])
  
      return metrics
  
  
  def main():
      metrics = get_metrics()
      maas_common.status_ok()
      for name, data in metrics.viewitems():
          maas_common.metric(name, 'uint32', data['value'])
  
  
  if __name__ == '__main__':
      with maas_common.print_output():
          main()
  
subject: Add conntrack_count.py