/opt/metrics-collector/lib/collectd/usr/sbin/collectdmon: invalid option -- '-'
Usage: /opt/metrics-collector/lib/collectd/usr/sbin/collectdmon <options> [-- <collectd options>]

Available options:
  -h         Display this help and exit.
  -c <path>  Path to the collectd binary.
  -P <file>  PID-file.

For <collectd options> see collectd.conf(5).

collectd 0.1.7, http://collectd.org/
by Florian octo Forster <octo@collectd.org>
for contributions see `AUTHORS'