polypush135
Been having a really hard time trying to stand up a server with nginx https and cowboy 2.5.
Before I get in to the errors I’m seeing heres my configs
Nginx Site config.
upstream polymorphic_productions{
server 127.0.0.1:4000;
}
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
server {
listen 80 default_server;
listen [::]:80 default_server;
server_name polymorphic.productions www.polymorphic.productions;
return 301 https://$server_name$request_uri;
}
server {
listen [::]:443 ssl default_server ipv6only=on; # managed by Certbot
listen 443 ssl default_server;
ssl_certificate /etc/letsencrypt/live/polymorphic.productions/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/polymorphic.productions/privkey.pem; # managed by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
server_name polymorphic.productions www.polymorphic.productions;
location / {
try_files $uri @proxy;
}
location @proxy {
include proxy_params;
proxy_redirect off;
proxy_pass http://polymorphic_productions;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}
}
Heres my endpoint config
config :polymorphic_productions, PolymorphicProductionsWeb.Endpoint,
http: [
port: 4000
# cipher_suite: :strong,
# keyfile: "/etc/letsencrypt/live/polymorphic.productions/privkey.pem",
# certfile: "/etc/letsencrypt/live/polymorphic.productions/cert.pem",
# cacertfile: "/etc/letsencrypt/live/polymorphic.productions/chain.pem"
],
url: [host: "polymorphic.productions", port: 4000],
cache_static_manifest: "priv/static/cache_manifest.json",
server: true
I can confirm the app will run on my server
deploy@polymorhpic:~$ ./app/polymorphic_productions/bin/polymorphic_productions foreground
[Server IP] [info] Running PolymorphicProductionsWeb.Endpoint with cowboy 2.5.0 at http://polymorphic.productions:4000
in another term
deploy@polymorhpic:~$ curl localhost:4000
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, shrink-to-fit=no">
<meta name="description" content="Portland's Digital Curator">
<meta name="author" content="Josh Chernoff <jchernoff@polymorhpic.productions>">
<title>Polymorphic Productions</title>
<link rel="stylesheet" href="/css/app-005b180feb294658404a412667531133.css?vsn=d"/>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.4.2/css/all.css" ......
also my foreground logs show
[Server IP] request_id=2lhmfja4sd16m1u03k00007h [info] GET /
[Server IP] request_id=2lhmfja4sd16m1u03k00007h [info] user=nil message="anonymous user"
[Server IP] request_id=2lhmfja4sd16m1u03k00007h [info] Sent 200 in 1ms
Now from the nginx side.
tailing my access logs I see the following when I attempt to hit the server via the url.
[MY IP] - - [02/Nov/2018:20:15:46 +0000] "GET / HTTP/1.1" 400 0 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36"```
Nothing shows up under the nginx error logs nor under my foreground logs nor in my erlang logs
Any idea what I could be doing wrong? The only error information I get is in the browser via:
Request URL: https://polymorphic.productions/
Request Method: GET
Status Code: 400 Bad Request
Remote Address: ....
Referrer Policy: no-referrer-when-downgrade
I’d also like to add, from the perspective of my app, I can run cowboy in place of nginx and it will even work with http2 requests. The problem I believe I’m seeing is in the upstream of the request from nginx to cowboy.
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idi527
Sorry for being off topic, but
port: 4000here would probably make your absolute links look likeYou might want to replace it with
443or80instead.polypush135
Yeah I figured that much, I forgot to change it back after I was testing different ideas. I just wanted to rule out that causing the requests to be ignored.
NobbZ
As far as I understand #923 (Allow proxy_http_version 2.0) – nginx, you can’t RP HTTP2.
polypush135
Correct me if I’m wrong but I don’t think I’m passing http2 requests.
Also I did just write this and this current ticket is my attempt to rollback from http2 but I’m seeing the same issues I had then.
NobbZ
Hmmm, I thought the upgrade stuff was HTTP2 related in your config. My failure then.
I’m wondering why nginx claims to send a 200 but phoenix and your browser state a 400…
polypush135
Good question, I dont know. I’ve been trying to figure that out my self.
Something to note: Phoenix never gets the request as far as I can tell, it’s simply the browser and nginx.
Also I’ve noticed that if I turn off the phoenix app I do get a 502 from nginx so its possible the request is making it to phoenix, but if so it never logs the request
NobbZ
I thought this was from your phoenix log…
polypush135
nope thats the access logs from nginx, also as noted there are no error logs on nginx and no logs what so ever coming from erlang
NobbZ
400 usually means that the clients request was malformed in a away. Can you try curl with verbose output against nginx?
NobbZ
And I took another look at your config. And compared it to a reverse proxy we have in production. It seams as if you were trying to upgrade every incoming request to a websicket connection. You need to proxy_oass regular HTTP and websicket separately.