Just a quick piece of feedback for the documentation on the Playing HTTP Tricks with Nginx page.
In the Basic Authentication section, there is an erroneous 'n' placed within the password encryption example. I copy-pasted the line to modify for some testing and didn't realize for a while why I couldn't authenticate to my ES instance via the reverse proxy.
tl;dr:
$ printf "john:$(openssl passwd -crypt s3cr3t)n" > passwords
Should be:
$ printf "john:$(openssl passwd -crypt s3cr3t)" > passwords