Hi,

My apologies if this message was received more than once.

My nginx seems to hang after a few minutes of no requests. I am using it to proxy to a single mongrel process in development.

I am getting the following in my error_log when I am using debug output.

2007/03/29 13:18:17 [notice] 30348#0: using the "epoll" event method 2007/03/29 13:18:17 [notice] 30348#0: nginx/0.5.15 2007/03/29 13:18:17 [notice] 30348#0: OS: Linux 2.6.20-gentoo-r3 2007/03/29 13:18:17 [notice] 30348#0: sysctl(KERN_RTSIGMAX): 0 2007/03/29 13:18:17 [notice] 30348#0: getrlimit(RLIMIT_NOFILE): 1024:1024 2007/03/29 13:18:17 [notice] 30348#0: start worker processes 2007/03/29 13:18:17 [notice] 30348#0: start worker process 30353 2007/03/29 13:18:17 [notice] 30348#0: start worker process 30354 2007/03/29 13:24:29 [notice] 30354#0: signal 28 (SIGWINCH) received, shutting down 2007/03/29 13:24:29 [info] 30354#0: epoll_wait() failed (4: Interrupted system call) 2007/03/29 13:24:29 [notice] 30354#0: gracefully shutting down 2007/03/29 13:24:29 [notice] 30354#0: exiting 2007/03/29 13:24:29 [notice] 30353#0: signal 28 (SIGWINCH) received, shutting down 2007/03/29 13:24:29 [info] 30353#0: epoll_wait() failed (4: Interrupted system call) 2007/03/29 13:24:29 [notice] 30353#0: gracefully shutting down 2007/03/29 13:24:29 [notice] 30353#0: exiting 2007/03/29 13:24:29 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:24:29 [notice] 30348#0: signal 17 (SIGCHLD) received 2007/03/29 13:24:29 [notice] 30348#0: worker process 30353 exited with code 0 2007/03/29 13:24:29 [notice] 30348#0: worker process 30354 exited with code 0 2007/03/29 13:24:29 [notice] 30348#0: start worker process 3236 2007/03/29 13:24:29 [notice] 30348#0: start worker process 3237 2007/03/29 13:24:29 [notice] 30348#0: signal 29 (SIGIO) received 2007/03/29 13:24:29 [notice] 3236#0: gracefully shutting down 2007/03/29 13:24:29 [notice] 3236#0: exiting 2007/03/29 13:24:29 [notice] 30348#0: signal 17 (SIGCHLD) received 2007/03/29 13:24:29 [notice] 30348#0: worker process 3236 exited with code 0 2007/03/29 13:24:29 [notice] 30348#0: signal 29 (SIGIO) received 2007/03/29 13:24:29 [notice] 3237#0: gracefully shutting down 2007/03/29 13:24:29 [notice] 3237#0: exiting 2007/03/29 13:24:29 [notice] 30348#0: signal 17 (SIGCHLD) received 2007/03/29 13:24:29 [notice] 30348#0: worker process 3237 exited with code 0 2007/03/29 13:24:32 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:24:36 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:24:40 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:24:42 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:24:45 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:25:09 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:25:52 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:25:53 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:26:21 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:27:08 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:27:09 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:27:14 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:27:23 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:27:31 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:28:14 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:28:15 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:28:30 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:29:30 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:29:32 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:29:33 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:29:34 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:29:36 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:29:38 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections 2007/03/29 13:29:39 [notice] 30348#0: signal 28 (SIGWINCH) received, stop accepting connections

Any ideas. Let me know what additional information would be useful.

I have attached my config (It is based on Ezra's mongrel config that he has published elsewhere.)

# user and group to run as user me users;

daemon off;

# number of nginx workers worker_processes 2;

error_log /current/log/nginx_core_error.log debug;

# pid of nginx master process pid /current/log/nginx.pid; # Number of worker connections. 1024 is a good default events { worker_connections 1024; }

# start the http module where we config http access. http { # pull in mime-types. You can break out your config # into as many include's as you want to make it cleaner include /etc/nginx/mime.types;

# set a default type for the rare situation that # nothing matches from the mimie-type include default_type application/octet-stream;

# configure log format log_format main '$remote_addr - $remote_user [$time_local] $status ' '"$request" $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"';

# main access log access_log /current/log/nginx_access.log main;

# main error log error_log /current/log/nginx_error.log debug;

# no sendfile on OSX sendfile on;

# These are good default values. tcp_nopush on; tcp_nodelay off; # output compression saves bandwidth gzip on; gzip_http_version 1.0; gzip_comp_level 2; gzip_proxied any; gzip_types text/plain text/html text/css application/x- javascript text/xml application/xml application/xml+rss text/javascript;

# this is where you define your mongrel clusters. # you need one of these blocks for each cluster # and each one needs its own name to refer to it later. upstream mongrel { server 127.0.0.1:3000; }

upstream merb { server 127.0.0.1:4000; }

# the server directive is nginx's virtual host directive. server { # port to listen on. Can also be set to an IP:PORT listen 80; auth_basic "Restricted"; auth_basic_user_file /current/config/nginx_passwd;

# Set the max size for file uploads to 50Mb client_max_body_size 100M;

# sets the domain[s] that this vhost server requests for # server_name www.[engineyard].com [engineyard].com; #server_name alpha.contraspot.com;

# doc root root /current/public;

# vhost specific access log access_log /current/log/nginx.vhost.access.log main;

# this rewrites all the requests to the maintenance.html # page if it exists in the doc root. This is for capistrano's # disable web task if (-f $document_root/system/maintenance.html) { rewrite ^(.*)$ /system/maintenance.html last; break; }

location /upload { # needed to forward user's IP address to rails proxy_set_header X-Real-IP $remote_addr;

# needed for HTTPS proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect false; proxy_max_temp_file_size 0; proxy_pass http://merb; break; }

location / { # needed to forward user's IP address to rails proxy_set_header X-Real-IP $remote_addr;

# needed for HTTPS proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect false; proxy_max_temp_file_size 0;

# If the file exists as a static file serve it directly without # running all the other rewite tests on it if (-f $request_filename) { break; }

# check for index.html for directory index # if its there on the filesystem then rewite # the url to add /index.html to the end of it # and then break to send it to the next config rules. if (-f $request_filename/index.html) { rewrite (.*) $1/index.html break; }

# this is the meat of the rails page caching config # it adds .html to the end of the url and then checks # the filesystem for that file. If it exists, then we # rewite the url to have explicit .html on the end # and then send it on its way to the next config rule. # if there is no file on the fs then it sets all the # necessary headers and proxies to our upstream mongrels if (-f $request_filename.html) { rewrite (.*) $1.html break; }

if (!-f $request_filename) { proxy_pass http://mongrel; break; } }

error_page 500 502 503 504 /500.html; error_page 413 /413.html; location = /500.html { root /current/public; } } }

Thanks again for all the hard work on this software.

-Curtis