Hey @Jose_E,
One thing after thinking twice on where processors can be defined after reading this topic: How to use processors in filebeat HAproxy's module?
Processors must be defined at the global config or at the input config, so when using modules you may need to define it like this:
- module: apache
access:
enabled: True
input:
processors:
- drop_fields.fields:
- "302"
- "172.21.205.252"
- "HEAD"