This changes the site to run on Debian 10 instead of Ubuntu 16.04. It
also fully converts the previous Salt setup to use Ansible instead.
Most of this was a relatively straightforward conversion, and it should
be very close to equivalent. One notable difference is that I removed
the setup for the "monitoring" server, since I wasn't confident that the
way of setting up self-hosted Sentry and Grafana was working any more.
I'll look to re-add that at some point, but it's not urgent.
Apparently add_header inside a location block doesn't... you know,
actually work. This should be reasonable, but I'd still rather only
allow the Stripe JS on the single page where it's necessary.
This won't affect requests for static files or anything except ones that
get proxied to the app.
The current configuration is based on IP, and allows a rate of 4/sec,
with an additional burst of 5 above the limit permitted, and burst
requests allowed to go through immediately (nodelay). For more info:
https://www.nginx.com/blog/rate-limiting-nginx/
This redirect being first in the file meant that if someone tried to
access a dev version through any method except using "localhost" (such
as via the IP address), no server block would be matched, which causes
nginx to use the first one. That resulted in a 301 redirect to
tildes.net, which definitely shouldn't happen for a dev version.
This change both moves the redirect to the bottom, as well as only
adding it if it's the "prod" environment, since it's not needed in the
dev environment at all.
Previously, this was set as "same-origin" which will only send a
referrer to Tildes itself. This changes so that it will continue sending
the full referrer to Tildes, but will send only the domain to external
sites if they use HTTPS (and no referer to HTTP ones).
This can be useful because there are often situations where an article
author sees traffic coming from a site and will come to check it out and
be able to participate in the discussion.
Some of these states were built entirely around a single-server approach
(Prometheus + monitoring being on the same server as the site), and the
files have needed modifications to work with a separate monitoring
server.
This updates the states so that it should all happen as expected in all
types of environments.
Deimos