Difference between revisions of "Nginx"

From ArchWiki
Jump to: navigation, search
(Merge option A and option B sections.)
(update templates, see Help:Style)
Line 6: Line 6:
 
== Installation ==
 
== Installation ==
  
The {{Package Official|nginx}} package is now in the [[Official Repositories|official repositories]].
+
The {{Pkg|nginx}} package is now in the [[Official Repositories|official repositories]].
  
 
For Ruby on Rails oriented installation, see [[RubyOnRails#Option_C:_The_Perfect_Rails_Setup|The Perfect Rails Setup]].
 
For Ruby on Rails oriented installation, see [[RubyOnRails#Option_C:_The_Perfect_Rails_Setup|The Perfect Rails Setup]].
Line 18: Line 18:
 
  /etc/nginx/html/index.html
 
  /etc/nginx/html/index.html
  
(The {{Package Official|nginx}} package does not install a default {{Filename|index.html}} file; you must create this file yourself, if you wish).  
+
(The {{Pkg|nginx}} package does not install a default {{ic|index.html}} file; you must create this file yourself, if you wish).  
  
After creating a {{Filename|/etc/nginx/html/index.html}} webpage, you can use this URL: <nowiki>http://127.0.0.1</nowiki> to test if Nginx is working.
+
After creating a {{ic|/etc/nginx/html/index.html}} webpage, you can use this URL: <nowiki>http://127.0.0.1</nowiki> to test if Nginx is working.
  
To enable the Nginx service by default at start-up just add {{Ic|nginx}} to the {{Ic|DAEMONS}} array in {{Filename|/etc/rc.conf}}:
+
To enable the Nginx service by default at start-up just add {{Ic|nginx}} to the {{Ic|DAEMONS}} array in {{ic|/etc/rc.conf}}:
 
  DAEMONS=(ntpd syslog-ng ... nginx)
 
  DAEMONS=(ntpd syslog-ng ... nginx)
  
 
== Configuring ==
 
== Configuring ==
  
You can modify the configurations by editing the files in {{Filename|/etc/nginx/conf}}. ({{Filename|/etc/nginx/conf/nginx.conf}} being the main config file.)  
+
You can modify the configurations by editing the files in {{ic|/etc/nginx/conf}}. ({{ic|/etc/nginx/conf/nginx.conf}} being the main config file.)  
  
 
More details can be found here: [http://wiki.codemongers.com/NginxConfiguration Nginx Configuration Examples].
 
More details can be found here: [http://wiki.codemongers.com/NginxConfiguration Nginx Configuration Examples].
Line 47: Line 47:
 
PHP now contains a FastCGI server spawner that takes care of everything for you.
 
PHP now contains a FastCGI server spawner that takes care of everything for you.
  
To get started, install {{Package Official|php-fpm}} and then start the service:
+
To get started, install {{Pkg|php-fpm}} and then start the service:
 
  # rc.d start php-fpm
 
  # rc.d start php-fpm
  
 
Now, move to: [https://wiki.archlinux.org/index.php/Nginx#Step_2:_Edit_.2Fetc.2Fnginx.2Fconf.2Fnginx.conf Step 2].
 
Now, move to: [https://wiki.archlinux.org/index.php/Nginx#Step_2:_Edit_.2Fetc.2Fnginx.2Fconf.2Fnginx.conf Step 2].
{{Note|You can configure the number of servers in the pool and tweak other configuration options by editing the file {{Filename|/etc/php/php-fpm.conf}}. More details on ''php-fpm'' can be found on the [http://php-fpm.anight.org/ php-fpm website].}}
+
{{Note|You can configure the number of servers in the pool and tweak other configuration options by editing the file {{ic|/etc/php/php-fpm.conf}}. More details on ''php-fpm'' can be found on the [http://php-fpm.anight.org/ php-fpm website].}}
  
 
===== 1st Method "Old" (PHP's built-in) =====
 
===== 1st Method "Old" (PHP's built-in) =====
Line 57: Line 57:
 
Directly running PHP's built-in FastCGI server -- this method does not require any third party tools.
 
Directly running PHP's built-in FastCGI server -- this method does not require any third party tools.
  
Arch Linux's {{Package Official|php}} package in the [[Official Repositories|official repositories]] has FastCGI support enabled already.
+
Arch Linux's {{Pkg|php}} package in the [[Official Repositories|official repositories]] has FastCGI support enabled already.
  
For example, install {{Package Official|php}} and {{Package Official|php-cgi}}, and then run:
+
For example, install {{Pkg|php}} and {{Pkg|php-cgi}}, and then run:
 
  $ php-cgi -b 127.0.0.1:9000 &
 
  $ php-cgi -b 127.0.0.1:9000 &
  
 
This command sets up the local machine as a FastCGI server using port 9000.
 
This command sets up the local machine as a FastCGI server using port 9000.
  
{{Note|Since NginX 0.7.62, the default internal {{Ic|$document_root}} is {{Filename|/etc/nginx/html}} which is moved outside the default NginX directory and symlinked to {{Filename|/usr/share/nginx/http}} in the Arch Linux package. For PHP to work with NginX 0.7.62 the open_basedir in {{Filename|/etc/php/php.ini}} has to contain the directory {{Filename|/etc/nginx/html}}:<br>
+
{{Note|Since NginX 0.7.62, the default internal {{Ic|$document_root}} is {{ic|/etc/nginx/html}} which is moved outside the default NginX directory and symlinked to {{ic|/usr/share/nginx/http}} in the Arch Linux package. For PHP to work with NginX 0.7.62 the open_basedir in {{ic|/etc/php/php.ini}} has to contain the directory {{ic|/etc/nginx/html}}:<br>
 
  {{ic|open_basedir <nowiki>=</nowiki> /etc/nginx/html/:/srv/http/:/home/:/tmp/:/usr/share/pear/}}.}}
 
  {{ic|open_basedir <nowiki>=</nowiki> /etc/nginx/html/:/srv/http/:/home/:/tmp/:/usr/share/pear/}}.}}
  
Below is a daemon script to be used in {{Filename|/etc/rc.conf}} to start PHP-cgi on boot. Save it as {{Filename|/etc/rc.d/fastcgi}} and add {{Ic|fastcgi}} to your {{Ic|DAEMONS}} array in {{Filename|/etc/rc.conf}}
+
Below is a daemon script to be used in {{ic|/etc/rc.conf}} to start PHP-cgi on boot. Save it as {{ic|/etc/rc.d/fastcgi}} and add {{Ic|fastcgi}} to your {{Ic|DAEMONS}} array in {{ic|/etc/rc.conf}}
  
 
   #!/bin/bash
 
   #!/bin/bash
Line 123: Line 123:
 
  # php --fpm -b 127.0.0.1:
 
  # php --fpm -b 127.0.0.1:
  
{{Note|You may need to edit {{Filename|/etc/php/php-fpm.conf}} at first. More details on ''php-fpm'' can be found at the [http://php-fpm.anight.org/ php-fpm website].}}
+
{{Note|You may need to edit {{ic|/etc/php/php-fpm.conf}} at first. More details on ''php-fpm'' can be found at the [http://php-fpm.anight.org/ php-fpm website].}}
  
 
{{Note|Sometimes, you may encounter some permission issue when running some third party software to start PHP as FastCGI-server. See [[Nginx#Troubleshooting]].}}
 
{{Note|Sometimes, you may encounter some permission issue when running some third party software to start PHP as FastCGI-server. See [[Nginx#Troubleshooting]].}}
Line 145: Line 145:
 
   }
 
   }
  
{{Note|If you are not using {{Package Official|php-fpm}}, you may want to change the '''fastcgi_pass''' value to '''127.0.0.1:9000''', or whichever IP and port to which your server is configured to respond. Do not forget the semicolon at the end of the line.}}
+
{{Note|If you are not using {{Pkg|php-fpm}}, you may want to change the '''fastcgi_pass''' value to '''127.0.0.1:9000''', or whichever IP and port to which your server is configured to respond. Do not forget the semicolon at the end of the line.}}
  
 
{{Note|If you are planning to run applications that support file uploads (images, for example), be sure and include the {{Ic|try_files}} line in the above configuration, otherwise you may be exposed to a security risk by allowing arbitrary code execution. The short explanation for this behavior is that a properly crafted URI which ends in ".php", in combination with a malicious image file that actually contains valid PHP, can result in the image being processed as PHP. For more information on the specifics of this behavior, you may wish to review the information provided on [https://nealpoole.com/blog/2011/04/setting-up-php-fastcgi-and-nginx-dont-trust-the-tutorials-check-your-configuration/ Neal Poole's blog]. If you are running FastCGI on another machine, this won't work and you should look at a better way to solve this.}}
 
{{Note|If you are planning to run applications that support file uploads (images, for example), be sure and include the {{Ic|try_files}} line in the above configuration, otherwise you may be exposed to a security risk by allowing arbitrary code execution. The short explanation for this behavior is that a properly crafted URI which ends in ".php", in combination with a malicious image file that actually contains valid PHP, can result in the image being processed as PHP. For more information on the specifics of this behavior, you may wish to review the information provided on [https://nealpoole.com/blog/2011/04/setting-up-php-fastcgi-and-nginx-dont-trust-the-tutorials-check-your-configuration/ Neal Poole's blog]. If you are running FastCGI on another machine, this won't work and you should look at a better way to solve this.}}
Line 154: Line 154:
 
  # rc.d restart nginx
 
  # rc.d restart nginx
  
Edit {{Filename|/srv/http/nginx/index.php}},
+
Edit {{ic|/srv/http/nginx/index.php}},
 
  <?php
 
  <?php
 
   phpinfo();
 
   phpinfo();
Line 172: Line 172:
 
For further information on setting up Nginx with Ruby, read the Nginx part of [http://wiki.rubyonrails.org/deployment/vps-setup-nginx-passenger this tutorial].
 
For further information on setting up Nginx with Ruby, read the Nginx part of [http://wiki.rubyonrails.org/deployment/vps-setup-nginx-passenger this tutorial].
  
{{Note|With Passenger you are also able to run other Rack-based applications, including Sinatra. Note, however, that these require a {{Filename|config.ru}} file in the source directory.}}
+
{{Note|With Passenger you are also able to run other Rack-based applications, including Sinatra. Note, however, that these require a {{ic|config.ru}} file in the source directory.}}
  
 
=== phpMyAdmin Setup ===
 
=== phpMyAdmin Setup ===
Line 193: Line 193:
 
Solution from the Arch Linux [http://bbs.archlinux.org/viewtopic.php?pid=780561#p780561 forum].
 
Solution from the Arch Linux [http://bbs.archlinux.org/viewtopic.php?pid=780561#p780561 forum].
  
Edit {{Filename|/etc/nginx/nginx.conf}} and locate the "server_name localhost" line without a # infront of it, and add below:
+
Edit {{ic|/etc/nginx/nginx.conf}} and locate the "server_name localhost" line without a # infront of it, and add below:
 
  server_name_in_redirect off;
 
  server_name_in_redirect off;
  
Line 202: Line 202:
 
This is most likely a permission error. Are you sure whatever user configured in the Nginx configuration is able to read the correct files?
 
This is most likely a permission error. Are you sure whatever user configured in the Nginx configuration is able to read the correct files?
  
If the files are located within a home directory, (e.g. {{Filename|/home/arch/public/webapp}}) and you are sure the user running Nginx has the right permissions (you can temporarily chmod all the files to 777 in order to determine this), {{Filename|/home/arch}} might be '''chmod 750''', simply {{Ic|chmod}} it to ''751'', and it should work.
+
If the files are located within a home directory, (e.g. {{ic|/home/arch/public/webapp}}) and you are sure the user running Nginx has the right permissions (you can temporarily chmod all the files to 777 in order to determine this), {{ic|/home/arch}} might be '''chmod 750''', simply {{Ic|chmod}} it to ''751'', and it should work.
  
 
=== Error: 404 (Pathinfo error) ===
 
=== Error: 404 (Pathinfo error) ===
Line 208: Line 208:
 
In some framework(like thinkphp, cakephp) or CMS, they need the pathinfo function.  
 
In some framework(like thinkphp, cakephp) or CMS, they need the pathinfo function.  
  
1. Edit the file {{Filename|/etc/php/php.ini}}, make sure
+
1. Edit the file {{ic|/etc/php/php.ini}}, make sure
 
  cgi.fix_pathinfo=1
 
  cgi.fix_pathinfo=1
2. Edit {{Filename|/etc/nginx/conf/nginx.conf}}, comment
+
2. Edit {{ic|/etc/nginx/conf/nginx.conf}}, comment
  
 
  location ~ \.php$ {
 
  location ~ \.php$ {
Line 258: Line 258:
 
  # spawn-fcgi -a 127.0.0.1 -p 9000 -u www -g www -f /usr/bin/php-cgi
 
  # spawn-fcgi -a 127.0.0.1 -p 9000 -u www -g www -f /usr/bin/php-cgi
  
Another occasion is that, wrong "root" argument in the "location ~ \.php$" section in {{Filename|nginx.conf}}, make sure the "root" points to the same directory as it in "location /" in the same server. Or you may just set root as global, do not define it in any location section.
+
Another occasion is that, wrong "root" argument in the "location ~ \.php$" section in {{ic|nginx.conf}}, make sure the "root" points to the same directory as it in "location /" in the same server. Or you may just set root as global, do not define it in any location section.
  
Also keep in mind that your php script path was defined as {{Filename|/srv/www/nginx/html}} by default using the variable "open_basedir" in {{Filename|/etc/php/php.ini}}; you can change them if you need.
+
Also keep in mind that your php script path was defined as {{ic|/srv/www/nginx/html}} by default using the variable "open_basedir" in {{ic|/etc/php/php.ini}}; you can change them if you need.
  
 
== See Also ==
 
== See Also ==

Revision as of 06:24, 13 February 2012

This template has only maintenance purposes. For linking to local translations please use interlanguage links, see Help:i18n#Interlanguage links.


Local languages: Català – Dansk – English – Español – Esperanto – Hrvatski – Indonesia – Italiano – Lietuviškai – Magyar – Nederlands – Norsk Bokmål – Polski – Português – Slovenský – Česky – Ελληνικά – Български – Русский – Српски – Українська – עברית – العربية – ไทย – 日本語 – 正體中文 – 简体中文 – 한국어


External languages (all articles in these languages should be moved to the external wiki): Deutsch – Français – Română – Suomi – Svenska – Tiếng Việt – Türkçe – فارسی

Nginx (pronounced "engine X") written by Igor Sysoev (Russia) in 2005, is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. According to Netcraft's January 2012 Web Server Survey, Nginx now hosts 9.63% of all domains worldwide, while Apache hosts about 64.91%. Nginx is now well known for its stability, rich feature set, simple configuration, and low resource consumption.

Installation

The nginx package is now in the official repositories.

For Ruby on Rails oriented installation, see The Perfect Rails Setup.

Starting Service

To start the Nginx service, run:

# rc.d start nginx

The default served (i.e. the page served at http://127.0.0.1) page is:

/etc/nginx/html/index.html

(The nginx package does not install a default index.html file; you must create this file yourself, if you wish).

After creating a /etc/nginx/html/index.html webpage, you can use this URL: http://127.0.0.1 to test if Nginx is working.

To enable the Nginx service by default at start-up just add nginx to the DAEMONS array in /etc/rc.conf:

DAEMONS=(ntpd syslog-ng ... nginx)

Configuring

You can modify the configurations by editing the files in /etc/nginx/conf. (/etc/nginx/conf/nginx.conf being the main config file.)

More details can be found here: Nginx Configuration Examples.

PHP/Python Integration

FastCGI technology is introduced into Nginx to work with many external tools and servers, i.e.: PHP and Python. So, you cannot use PHP or Python service unless FastCGI server has been started.

PHP and Python can be run as FastCGI application and can process FastCGI requests from Nginx.

FastCGI is usually faster than implementations in e.g. Apache where PHP is loaded each time, with FastCGI the script is simply passed to the PHP daemon, and the appropriate value is returned and used by Nginx.

Step 1: Start the FastCGI server

There are two different ways to run FastCGI server. It is recommended to use a third party wrapper (the second method).

1st Method "New" (as of PHP 5.3.3)

PHP now contains a FastCGI server spawner that takes care of everything for you.

To get started, install php-fpm and then start the service:

# rc.d start php-fpm

Now, move to: Step 2.

Note: You can configure the number of servers in the pool and tweak other configuration options by editing the file /etc/php/php-fpm.conf. More details on php-fpm can be found on the php-fpm website.
1st Method "Old" (PHP's built-in)

Directly running PHP's built-in FastCGI server -- this method does not require any third party tools.

Arch Linux's php package in the official repositories has FastCGI support enabled already.

For example, install php and php-cgi, and then run:

$ php-cgi -b 127.0.0.1:9000 &

This command sets up the local machine as a FastCGI server using port 9000.

Note: Since NginX 0.7.62, the default internal $document_root is /etc/nginx/html which is moved outside the default NginX directory and symlinked to /usr/share/nginx/http in the Arch Linux package. For PHP to work with NginX 0.7.62 the open_basedir in /etc/php/php.ini has to contain the directory /etc/nginx/html:
open_basedir = /etc/nginx/html/:/srv/http/:/home/:/tmp/:/usr/share/pear/.

Below is a daemon script to be used in /etc/rc.conf to start PHP-cgi on boot. Save it as /etc/rc.d/fastcgi and add fastcgi to your DAEMONS array in /etc/rc.conf

 #!/bin/bash
 
 . /etc/rc.conf
 . /etc/rc.d/functions
 
 case "$1" in
   start)
 	stat_busy 'Starting Fastcgi Server'
 	if /usr/bin/php-cgi -b 127.0.0.1:9000 &
 	then
 		add_daemon fastcgi
 		stat_done
 	else
 		stat_fail	fi
 	fi
 	;;
   stop)
 	stat_busy 'Stopping Fastcgi Server'
 	[ -e /var/run/daemons/fastcgi ] && kill $(pidof php-cgi) &> /dev/null;
 	if [ $? -gt 0 ]; then 
 		stat_fail
 	else
 		rm_daemon fastcgi
 		stat_done
 	fi
 	;;
   restart)
 	$0 stop
 	$0 start
 	;;
   *)
 	echo "Usage: $0 {start|stop|restart}"
 esac
2nd Method (third party wrapper)

This can be more comfortable than the first method because of increased flexibility.

There are currently three options for deploying PHP on Nginx:

  • fcgi
    • Includes cgi-fcgi
  • lighttpd
    • Includes spawn-fcgi
  • PHP-FPM (Recommended: see above)

To spawn a process, issue one of the following commands (matching the package you installed):

# cgi-fcgi -start -connect localhost:9000 /usr/bin/php-cgi
# spawn-fcgi -a 127.0.0.1 -p 9000 -C 9 -f /usr/bin/php-cgi
# php --fpm -b 127.0.0.1:
Note: You may need to edit /etc/php/php-fpm.conf at first. More details on php-fpm can be found at the php-fpm website.
Note: Sometimes, you may encounter some permission issue when running some third party software to start PHP as FastCGI-server. See Nginx#Troubleshooting.

Step 2: Edit /etc/nginx/conf/nginx.conf

Add index.php after index.htm in this line: (example below has index.php already added, you need to add it to your file manually)

location / {
      root    html;
      index   index.html index.htm index.php;
}

Then uncomment these lines and edit in the file to be as follows:

 location ~ \.php$ {
      try_files $uri =404;
      root           html;
      fastcgi_pass   unix:/var/run/php-fpm/php-fpm.sock;
      fastcgi_index  index.php; 
      fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
      include        fastcgi_params;
 }
Note: If you are not using php-fpm, you may want to change the fastcgi_pass value to 127.0.0.1:9000, or whichever IP and port to which your server is configured to respond. Do not forget the semicolon at the end of the line.
Note: If you are planning to run applications that support file uploads (images, for example), be sure and include the try_files line in the above configuration, otherwise you may be exposed to a security risk by allowing arbitrary code execution. The short explanation for this behavior is that a properly crafted URI which ends in ".php", in combination with a malicious image file that actually contains valid PHP, can result in the image being processed as PHP. For more information on the specifics of this behavior, you may wish to review the information provided on Neal Poole's blog. If you are running FastCGI on another machine, this won't work and you should look at a better way to solve this.

Step 3: Restart Nginx

If Nginx has been working, run:

# rc.d restart nginx

Edit /srv/http/nginx/index.php,

<?php
  phpinfo();
?> 

Visit the URL: http://localhost/index.php with your browser, and you will find PHP has worked well with Nginx.

Ruby Integration (Ruby on Rails and Rack-based)

The Ruby on Rails wiki has tutorials on configuring Ruby for Nginx. It is not recommended to use FastCGI to make Nginx work with Ruby anymore, although very well possible. Nginx and Passenger are a great toolkit, and this setup is extremely easy to achieve on Archlinux. It should be noted, however, that there are other alternatives, including Mongrel, Thin and Unicorn.

Setting up Nginx and Passenger

Install the Nginx Passenger package from the AUR, and you are ready to go.

For further information on setting up Nginx with Ruby, read the Nginx part of this tutorial.

Note: With Passenger you are also able to run other Rack-based applications, including Sinatra. Note, however, that these require a config.ru file in the source directory.

phpMyAdmin Setup

See the following wiki article: PhpMyAdmin#NGINX_Configuration.

Security

  • Allow/deny visitors based on IP:

ngx_http_access_module.

  • HTTP authentication:

ngx_http_auth_basic_module.

  • HTTPS support:

ngx_http_ssl_module.

Troubleshooting

Accessing local IP redirects to localhost

Solution from the Arch Linux forum.

Edit /etc/nginx/nginx.conf and locate the "server_name localhost" line without a # infront of it, and add below:

server_name_in_redirect off;

Default behavior is that nginx redirects any requests to the value given as server_name in the config.

Error: 403 (Permission error)

This is most likely a permission error. Are you sure whatever user configured in the Nginx configuration is able to read the correct files?

If the files are located within a home directory, (e.g. /home/arch/public/webapp) and you are sure the user running Nginx has the right permissions (you can temporarily chmod all the files to 777 in order to determine this), /home/arch might be chmod 750, simply chmod it to 751, and it should work.

Error: 404 (Pathinfo error)

In some framework(like thinkphp, cakephp) or CMS, they need the pathinfo function.

1. Edit the file /etc/php/php.ini, make sure

cgi.fix_pathinfo=1

2. Edit /etc/nginx/conf/nginx.conf, comment

location ~ \.php$ {
...
}

to

#location ~ \.php$ {
#...
#}

Then add the follows,

location ~ ^(.+\.php)(.*)$ {
  root   /srv/http/nginx;
  fastcgi_pass   unix:/var/run/php-fpm/php-fpm.sock; 	
  #fastcgi_pass   127.0.0.1:9000; #Un-comment this and comment "fastcgi_pass   unix:/var/run/php-fpm/php-fpm.sock;" if you are not using php-fpm.
  fastcgi_index  index.php;
  set $document_root2 $document_root;
  if ($document_root2 ~ "^(.*\\\\).*?[\\\\|\/]\.\.\/(.*)$") { set $document_root2 $1$2; }
  if ($document_root2 ~ "^(.*\\\\).*?[\\\\|\/]\.\.\/(.*)$") {	set $document_root2 $1$2; }
  if ($document_root2 ~ "^(.*\\\\).*?[\\\\|\/]\.\.\/(.*)$") {	set $document_root2 $1$2; }
  if ($document_root2 ~ "^(.*\\\\).*?[\\\\|\/]\.\.\/(.*)$") {	set $document_root2 $1$2; }
  if ($document_root2 ~ "^(.*\\\\).*?[\\\\|\/]\.\.\/(.*)$") {	set $document_root2 $1$2; }
  fastcgi_split_path_info ^(.+\.php)(.*)$;
  fastcgi_param	SCRIPT_FILENAME	$document_root2$fastcgi_script_name;
  fastcgi_param	PATH_INFO	$fastcgi_path_info;
  fastcgi_param	PATH_TRANSLATED	$document_root2$fastcgi_path_info;
  include	fastcgi_params;
  fastcgi_param  DOCUMENT_ROOT      $document_root2;
}

Error: The page you are looking for is temporarily unavailable. Please try again later.

This is because the FastCGI server has not been started.

Error: No input file specified

Most Likely you do not have the SCRIPT_FILENAME containing the full path to you scripts. If the configuration of nginx (fastcgi_param SCRIPT_FILENAME) is all right, this kind of error means php fail to load the requestd script. Usually it is simply a permissions issue, you can just run php-cgi as root

# spawn-fcgi -a 127.0.0.1 -p 9000 -f /usr/bin/php-cgi

or you should create some group and user to start the php-cgi. For example:

# groupadd www
# useradd -g www www
# chmod +w /srv/www/nginx/html
# chown -R www:www /srv/www/nginx/html
# spawn-fcgi -a 127.0.0.1 -p 9000 -u www -g www -f /usr/bin/php-cgi

Another occasion is that, wrong "root" argument in the "location ~ \.php$" section in nginx.conf, make sure the "root" points to the same directory as it in "location /" in the same server. Or you may just set root as global, do not define it in any location section.

Also keep in mind that your php script path was defined as /srv/www/nginx/html by default using the variable "open_basedir" in /etc/php/php.ini; you can change them if you need.

See Also