Grok logstash message without patterns file

Question

I would like to know if it's possible to grok message with logstash without using an external patterns file and directly write my pattern in my config:

For example, now it's works like this :

input { 
     stdin{     
    }   
}
filter {
    grok {
        patterns_dir => "./patterns"
        match => ["message","%{PATTERNFILE:test}"]
    }
}

output {
    stdout {codec => rubydebug}

}

I have a file in a patterns folder with the following content :

PATTERNFILE .*

But I would like to directly write my pattern in the filter like this :

filter {
    grok {
        patterns_dir => "./patterns"
        match => ["message","%{.*:test}"]
    }
}

But it's not working.

Answer 1

To directly write a pattern in the config file without having an exernal patterns file, the solution is:

filter {grok{ match => ["message", "(?<test>.*)"]}}

The method is described at http://logstash.net/docs/1.4.2/filters/grok in section "Custom patterns"

Answer 2

For using patterns_dir you should use full path /etc/logstash/conf.d/patterns/dns_domain for example:

  grok {
    patterns_dir => "/etc/logstash/conf.d/patterns/dns_domain"
    match => { "Unparsed DNS Domain" => "%{BRACKETS:b1}%{META_INF:m1}" }
  }

Where dns_domain file contains custom patterns. for example:

  BRACKETS \(\d+\)
  META_INF [0-9A-Za-z\s\-_]+
  ~                                                                                                                                                                                                    
  ~ 

Answer 3

匹配=> {“消息” =>“％{PATTERNFILE}”}