The collectd input plugin is deprecated

[untergeek]

Because the udp input plugin is multithreaded now—and therefore much more performant—the collectd input plugin is deprecated, and will likely be removed from Logstash 1.5 in favor of using the collectd codec. See http://logstash.net/docs/1.4.2/codecs/collectd

I'd fork the project and do this myself, but I'm really busy today.

Where you have:

input {
  collectd {
    port => $collectdport
    type => "metrics"
    security_level => "Encrypt"
    authfile => "/etc/logstash/collectd.authfile"
  }
}

It should instead be something like:

input {
  udp {
    codec => collectd {
      port => $collectdport
      type => "metrics"
      security_level => "Encrypt"
      authfile => "/etc/logstash/collectd.authfile"
    }
  }
}

[frntn]

I'll take a look at the doc and update accordingly. Thanks for the report.