Alex Barlow <[email protected]> wrote:
> Hi
>
> It goes
>
> client <- TCP -> Unicorn => quiet errors (good)
> client <- TCP -> nginx <- TCP -> Unicorn => quiet errors (good)
> client <- TCP -> nginx <- Unix socket-> Unicorn => verbose errors (bad)
>
> Strange i know!
Hi Alex,
My gut feeling is that somehow nginx is hitting a different instance of
your app when using the Unix socket. Other than that, I'm confused.
More info/questions below.
> Ill try the socket in /tmp/ see what that does.
>
> The Nginx error logs show nothing error wise really. My Nginx config is...
>
> user nginx;
> worker_processes 1;
>
> events {
> worker_connections 1024;
> }
>
> http {
> include mime.types;
> default_type application/octet-stream;
>
> sendfile on;
> keepalive_timeout 65;
> gzip on;
>
> upstream unicorn_sock {
> server unix:/root/pbr/unicorn.sock;
> }
>
> server {
> listen 80;
> server_name localhost;
> proxy_set_header Host $host;
>
> location / {
> proxy_pass http://unicorn_sock;
> }
> }
> }
Nothing strange there, what's the verbosity of the nginx error_log?
Also, anything enlightening in the Rails production.log or Unicorn
stderr?
Which OS are you running? Maybe there's a platform-specific bug
somewhere, too...
> This is currently throwing out verbose errors, in production (must be,
> its using asset host and the production database)
>
> Put the sock in /tmp, no difference
Is there another Unicorn instance on the same box that it might be
somehow hitting?
What happens when you try have Unicorn listening on both TCP and a Unix
socket? Just put both "listen" directives in your config file and point
nginx to the Unix socket. Then try hitting the Unicorn TCP port
directly, and then also the Unix socket via nginx.
You can also try hitting the Unix socket directly by crafting your
own HTTP request using socat from th shell:
req='GET / HTTP/1.1\r\nHost: example.com\r\n\r\n'
printf "$req" | socat - UNIX:/root/pbr/unicorn.sock
P.S.: I might not have a chance to respond again for the next day
or so due to personal matters. Maybe somebody else on this
list can help....
--
Eric Wong
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