Set up logging settings for filebeat as environment variables

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1

I've been searching for documentation regarding passing environmental variables to filebeat in order to set up logging, but I wasn't able to find out.
Can anyone help me in this respect?

I've only been able to find this link, which configures the variables inside the yml:

I'm guessing this isn't the only way to do it, right?

Thanks!

2

This is the recommended way. You can also use command line options, but I'm not quite sure if there is any interface for environment variables.