Nginx configuration leads to too many connections

Question

In an attempt to implement the download execution module , the following server configuration causes too many open files to fail

2014/11/19 12:10:34 [alert] 31761#0: *1010 socket() failed (24: Too many open files) while connecting to upstream, client: 127.0.0.1, server: xxx, request: "GET /documents/15/edit HTTP/1.0", upstream: "http://127.0.0.1:80/documents/15/edit", host: "127.0.0.1" 2014/11/19 12:10:34 [crit] 31761#0: *1010 open() "/usr/share/nginx/html/50x.html" failed (24: Too many open files), client: 127.0.0.1, server: xxx, request: "GET /documents/15/edit HTTP/1.0", upstream: "http://127.0.0.1:80/documents/15/edit", host: "127.0.0.1" 

Below is the corresponding part of the server block that causes the passenger conflict; rails_env development; root / home / user / app / current / public;

  # redirect server error pages to the static page /50x.html error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } location / { # proxy to upstream server proxy_pass http://127.0.0.1; proxy_redirect default; # track uploads in the 'proxied' zone # remember connections for 30s after they finished track_uploads proxied 30s; } location ^~ /progress { # report uploads tracked in the 'proxied' zone report_uploads proxied; } 

Being relative n00b to nginx, I do not understand where this generates too many file errors. I assumed that the error pages are only for server errors 500-504 ...

Answer 1

First check and increase the restriction on open files in the root shell (system-wide, usually 1024):

 # ulimit -n # ulimit -n 16384 

Then you can increase the limit of open nginx files (main context, top of nginx.conf):

 worker_rlimit_nofile 16384 

Then restart nginx)

If this does not help, check out more detailed solutions, for example

Nginx: 24: too many errors and open file solutions