Filter conditions, config

Elastic Stack Logstash
1

We have three servers. Each sends logs of one format. I am trying to make conditions for filtering logs from these servers using tags. But that does not work.

input {
  beats {
    port => 5044
    type => beats
  }
  udp {
    port => 6514
    type => syslog
  }
}

filter {
  if ["server1", "server2", "server3"] in [tags] {
    grok {
      match => { "message" => "%{INT:Min}:%{BASE10NUM:Sec}-%{INT:Duration},(%{WORD:Event}|%{SPACE:Event}),%{INT:Level}" }
      match => { "[log][file][path]" => "%{INT:TempYYMMDDHH}.log" }
    }
  } else {
    grok {
      match => { "message" => "%{SYSLOGTIMESTAMP:syslog_timestamp} %{SYSLOGHOST:syslog_hostname} %{DATA:syslog_program}(?:\[%{POSINT:syslog_pid}\])?: %{GREEDYDATA:syslog_message}" }
      add_field => [ "received_at", "%{@timestamp}" ]
      add_field => [ "received_from", "%{host}" ]
    }
    date {
      match => [ "syslog_timestamp", "MMM  d HH:mm:ss", "MMM dd HH:mm:ss" ]
    }
  }
}

output {
  if "server1" in [tags] {
    elasticsearch {
      index => "server1-%{+YYYY.MM.dd}"
      hosts => ["localhost:9200"]
    }
  } else if "server2" in [tags] {
    elasticsearch {
      index => "server2-%{+YYYY.MM.dd}"
      hosts => ["localhost:9200"]
    }
  } else if "server3" in [tags] {
    elasticsearch {
      index => "server3-%{+YYYY.MM.dd}"
      hosts => ["localhost:9200"]
    }
  } else {
    elasticsearch {
    	hosts => ["localhost:9200"]
    }
    stdout {
	codec => rubydebug
    }
  }
}

Also tried this option

if "server1" in [tags] or "server2" in [tags] or "server3" in [tags] {
.............
.............
} else ......

Please help solve this problem!

Best regards!

2

Hi there,

what do you mean by that does not work? It is a bit too generic. Do all events fall in the else condition? Do all events fall in the if condition? Does the laptop blow up?

Also, can you share the output you get in the stdout so we can see what really is in that tags field?

Thanks

3

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