Deprecating the NetFlow module

[acchen97]

We're deprecating the Logstash NetFlow module in favor of the newer Filebeat NetFlow module. I'd suggest we put up a banner at the top of the documentation page.

Proposed language: "This module has been deprecated. We recommend using the Filebeat NetFlow module which is compliant with the Elastic Common Schema (ECS)."

[karenzone]

I've completed the documentation work. Leaving open so we can eval and address code side.

[fredbcode]

Hello, Did you make performance tests with filebeat ? Maybe I missed something but I'm unable to have the same results (with same server and same requests of course) https://github.com/elastic/beats/issues/14112

[fredbcode]

Tests here, the load is reduced

On top command the load average was, more or less, 14/20 with logstash and only 3/4 with filebeat

1500% cpu usage with logstash 300% filebeat -> 24 cores, 132 Go of memory

Big difference, same hardware, same os, same load, just docker images logstah/filebeat switched

[jsvd]

hi @fredbcode good to know the performance and experience on the beats side is better, which makes us more comfortable with this decision :)

[fredbcode]

Hello, Did you make performance tests with filebeat ? Maybe I missed something but I'm unable to have the same results (with same server and same requests of course) elastic/beats#14112

Result with 7.4.0

[fredbcode]

Tests here, the load is reduced

On top command the load average was, more or less, 14/20 with logstash and only 3/4 with filebeat

1500% cpu usage with logstash 300% filebeat -> 24 cores, 132 Go of memory

Big difference, same hardware, same os, same load, just docker images logstah/filebeat switched

Result with 7.4.1 SNAPSHOT