Hi,

Envirionment:
Passenger 3.0.9
nginx 1.0.6
Suse SLE 11
Rails 3.0.7
Ruby 1.9.2 p136
Quad core
8 GB
Single Rails application

nginx settings:

worker_processes 3;
worker_rlimit_nofile 8192;
worker_priority 0;
events {
multi_accept off;
worker_connections 4096;
}

pid /var/run/nginx.pid;
error_log logs/error.log debug;
http {
passenger_root /usr/local/rvm/gems/ruby-1.9.2-p136/gems/passenger-3.0.9;
passenger_ruby /usr/local/rvm/wrappers/ruby-1.9.2-p136/ruby;
passenger_max_pool_size 4;
passenger_min_instances 1;
keepalive_timeout 180;
client_body_buffer_size 128k;
client_header_buffer_size 2k;
large_client_header_buffers 32 64k;
passenger_pool_idle_time 300;
passenger_log_level 2;
passenger_use_global_queue on;
include /opt/nginx/conf/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] '
'"$request" $status $bytes_sent '
'"$http_referer" "$http_user_agent" '
'"$gzip_ratio"';
access_log logs/access.log main;
sendfile on;
tcp_nopush on;
tcp_nodelay off;
gzip on;
gzip_http_version 1.0;
gzip_comp_level 2;
gzip_proxied any;
gzip_min_length 1000;
gzip_types text/plain text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript;
...

I'm not sure if the problem lies with passenger or nginx, after a period of time the passenger as well as the nginx master process shuts down. When I look in the log file I have the following:

2011/09/27 16:45:36 [info] 6408#0: *204 client 61.88.141.194 closed keepalive connection
[ pid=6381 thr=140088026498848 file=ext/common/LoggingAgent/LoggingServer.h:829 time=2011-09-27 16:45:46.849 ]: Flushing all sinks (periodic action)
[ pid=6381 thr=140088026498848 file=ext/common/LoggingAgent/LoggingServer.h:829 time=2011-09-27 16:46:01.848 ]: Flushing all sinks (periodic action)
[ pid=6381 thr=140088026498848 file=ext/common/LoggingAgent/LoggingServer.h:829 time=2011-09-27 16:46:16.848 ]: Flushing all sinks (periodic action)
[ pid=6381 thr=140088026498848 file=ext/common/LoggingAgent/LoggingServer.h:829 time=2011-09-27 16:46:31.848 ]: Flushing all sinks (periodic action)
[ pid=6381 thr=140088026498848 file=ext/common/LoggingAgent/LoggingServer.h:829 time=2011-09-27 16:46:46.849 ]: Flushing all sinks (periodic action)
[ pid=6381 thr=140088026498848 file=ext/common/LoggingAgent/LoggingServer.h:829 time=2011-09-27 16:47:01.849 ]: Flushing all sinks (periodic action)
[ pid=6381 thr=140088026498848 file=ext/common/LoggingAgent/LoggingServer.h:829 time=2011-09-27 16:47:16.848 ]: Flushing all sinks (periodic action)
[ pid=6381 thr=140088026498848 file=ext/common/LoggingAgent/LoggingServer.h:829 time=2011-09-27 16:47:31.848 ]: Flushing all sinks (periodic action)
[ pid=6371 thr=139975134312192 file=ext/common/Watchdog.cpp:1057 time=2011-09-27 16:47:38.756 ]: Web server did not exit gracefully, forcing shutdown of all service processes...
2011/09/27 16:49:00 [crit] 6410#0: *250 connect() to unix:/passenger_helper_server failed (2: No such file or directory) while connecting to upstream, client: 120.146.194.176, serv
er: localhost, request: "GET /candidates/new HTTP/1.1", upstream: "passenger:unix:/passenger_helper_server:", host: "61.88.141.221", referrer: "http://61.88.141.221/home/view_repor
ts"

When I look at the running processes the nginx master is no longer running but the workers are still running, I have to kill them before I can restart. All passenger processes are not longer running.

As I said I'm not sure which process is causing the other to close and I have no idea what the problem may be, so any help greatly appreciated.

Etienne.