Logstash's log files in Windows

Elastic Stack Logstash
1

Where are the logstash log files in Windows?

2

It depends on how Logstash is invoked. The -l/--log startup option selects the name of the log file.

3

It's just being run with: C:\logstash-2.3.2\bin>logstash -f c:\logstash-2.3.2\central.conf

central.conf looks like:

input {
    redis {
        host => "XX.XX.XX.XX"
        type => "redis-input"
        data_type => "list"
        key => "logstash"
    }
    beats {
        type => beats
        port => 5044
    }
}

output {
    stdout { }
    elasticsearch { }
}

It's straight out of The Logstash Book.

4

Then you'll get the logs to stdout (or possibly stderr, I don't recall).

5

OK, I do get output to the screen. Do you know what the magic is to output them to a file?.. and how to give that file a max size?

6

Do you know what the magic is to output them to a file?

Apart from redirecting the process output see my first response to you.

.. and how to give that file a max size?

Logstash doesn't do log rotation.

7

OK, cheers. I'll just have to delete them every now and then, that's no biggie.