PluginManager: Switch debug mode from env variable to cmd line parameter?
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plugin manager
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Description
Throughout the Elastic Stack, debug/verbose logging is turned on with a command line parameter:
- `logstash --log.level=debug`
- `elasticsearch --verbose`
- `elasticsearch-plugin --verbose`
- `filebeat -v`
The exception is `logstash-plugin` which uses a `DEBUG` environment variable. This does not show up in `--help`, making it difficult to find.
Should we switch to using a command line parameter for `logstash-plugin` as well?
If yes, I'm thinking of opening a PR for this.
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