Make logstash add different inputs to different indices

Question

I have setup logstash to use an embedded elastisearch.
I can log events.
My logstash conf looks thus:
https://gist.github.com/khebbie/42d72d212cf3727a03a0

Now I would like to add another udp input and have that input be indexed in another index.

Is that somehow possible? I would do it to make reporting easier, so I could have system log events in one index, and business log events in another index.

Answer 1

Use an if conditional in your output section, based on eg the message type or whatever message field is significant to the choice of index.

input {
  udp {
    ...
    type => "foo"
  }
  file {
    ...
    type => "bar"
  }
}

output {
  if [type] == "foo" {
    elasticsearch {
      ...
      index => "foo-index"
    }
  } else {
    elasticsearch {
      ...
      index => "bar-index"
    }
  }
}

Or, if the message type can go straight into the index name you can have a single output declaration:

elasticsearch {
  ...
  index => "%{type}-index"
}