Filebeat for custom Nginx logs on FreeBSD 12.0
Filebeat's Nginx module expects the default log format. Changing the grok patterns, adding a field and loading the ingest pipeline so Kibana parses your own.
logging
Colour coding error categories: error, warning, notice
Three severities, three colours, and one sentence each saying what the reader is expected to do about it. The whole convention on one screen.