User:Woozle/nginx

The Problem

nginx works with static files (and Ruby), but will not execute PHP files. PHP runs fine from a command line.

On requesting a PHP file (such as http://wiki.makeyourlaws.org/phpinfo.php), here's what seems to be happening:

• nginx receives the request
• nginx forwards it to PHP-FPM
  • This can be done one of two ways -- either via a UNIX pipe or via a port. I've tried both; currently using port, I think.
• PHP never receives the request; the log file does not show it.
• nginx somehow receives a success code, and logs the request as successful (http code 200) returning a result of zero bytes.
• The web browser displays a blank page.

Notes

2012-06-21

Looks like the package "spawn-fcgi" may be the part of FastCGI that I need to install, extrapolating from this. Installing it...

2012-06-23

Noticed that this says "Unlike Apache or Lighttpd, Nginx does not automatically spawn FCGI processes. You must start them separately. ... So we simply run php -b 127.0.0.1:9000 manually, or create an init script like so...".

This turns out to be not quite correct; "php" by itself doesn't accept the -b parameter. You have to run php-cgi:

php-cgi -b 127.0.0.1:9000

Unfortunately, I get this:

Cannot bind/listen socket - [98] Address already in use.
Couldn't create FastCGI listen socket on port 127.0.0.1:9000

...meaning that something is already listening there. Presumably that's PHP-FPM:

ps aux | grep php
woozle   11404  0.0  0.1   3372   752 pts/1    S+   15:25   0:00 grep --color=auto php
root     24667  0.0  0.2  62892  1488 ?        Ss   Jun18   0:22 php-fpm: master process (/etc/php5/fpm/php-fpm.conf)      
www-data 24668  0.0  0.3  63180  1984 ?        S    Jun18   0:00 php-fpm: pool www                                         
www-data 24669  0.0  0.3  63180  1996 ?        S    Jun18   0:00 php-fpm: pool www                                         
www-data 24670  0.0  0.3  63180  1996 ?        S    Jun18   0:00 php-fpm: pool www                                         
www-data 24671  0.0  0.3  63180  1996 ?        S    Jun18   0:00 php-fpm: pool www

So, how can we determine if PHP-FPM is receiving the page request?

Background

• Distro: Ubuntu 10.04.4 LTS

nginx was compiled from source; PHP5 was installed from standard Ubuntu packages.

File Locations

• /opt/nginx/ - configuration and logging folders
  • /opt/nginx/conf/nginx.conf - master config file
  • /opt/nginx/conf/fastcgi.conf - FastCGI config file
  • /opt/nginx/conf/scgi_params - Simple CGI config -- presumably not in use
• /etc/php5/fpm/ - PHP-FPM configuration
  • /etc/php5/fpm/pool.d/www.conf - config file to actually edit

Folder Listings

• /opt/nginx

  total 25532

drwx------  2 nobody root     4096 2012-04-26 18:47 client_body_temp
drwxrwxr-x  2 root   root     4096 2012-06-09 22:25 conf
drwx------  2 nobody root     4096 2011-12-02 23:20 fastcgi_temp
drwxr-xr-x  2 root   root     4096 2011-12-02 22:52 html
drwxrwxr-x  2 root   root 26071040 2012-06-11 06:43 logs
drwx------  2 nobody root     4096 2011-12-02 23:20 proxy_temp
drwxrwxr-x  2 root   root     4096 2012-04-22 04:41 sbin
drwx------  2 nobody root     4096 2011-12-02 23:20 scgi_temp
drwx------  2 nobody root     4096 2011-12-02 23:20 uwsgi_temp

• /opt/nginx/conf

  total 80

-rw-r--r--  1 root root  979 2011-12-02 22:52 fastcgi.conf
-rw-r--r--  1 root root  979 2012-04-22 04:41 fastcgi.conf.default
-rw-r--r--  1 root root  909 2011-12-02 22:52 fastcgi_params
-rw-r--r--  1 root root  909 2012-04-22 04:41 fastcgi_params.default
-rw-r--r--  1 root root 2837 2012-04-22 04:41 koi-utf
-rw-r--r--  1 root root 2223 2012-04-22 04:41 koi-win
-rw-r--r--  1 root root 3362 2011-12-02 22:52 mime.types
-rw-r--r--  1 root root 3463 2012-04-22 04:41 mime.types.default
-rw-r--r--  1 root root 6651 2012-06-10 18:50 nginx.conf
-rw-r--r--  1 root root 2685 2012-04-22 04:41 nginx.conf.default
-rw-------  1 root root    0 2012-04-23 16:29 nginx.conf.save
-rw-r--r--  1 root root 4208 2012-04-23 16:29 nginx.conf.save.1
-rw-r--r--  1 root root  544 2011-12-02 22:52 scgi_params
-rw-r--r--  1 root root  544 2012-04-22 04:41 scgi_params.default
-rw-r--r--  1 root root  570 2011-12-02 22:52 uwsgi_params
-rw-r--r--  1 root root  570 2012-04-22 04:41 uwsgi_params.default
-rw-r--r--  1 root root 3610 2012-04-22 04:41 win-utf

Links

• discussion