Hi,

I have installed nginx with my server; also it is displaying my 'index.html' in browser. But when I am trying to run 'index.php' it shows an error:
'500 Internal Server Error'.
Please help me to resolve this issue.
My 'nginx.conf' file is as follows:
=================
user nginx;
worker_processes 1;

error_log /var/log/nginx/error.log;
#error_log /var/log/nginx/error.log notice;
#error_log /var/log/nginx/error.log info;

pid /var/run/nginx.pid;


#----------------------------------------------------------------------
# Events Module
#
# http://wiki.nginx.org/NginxHttpEventsModule
#
#----------------------------------------------------------------------

events {
worker_connections 1024;
}


#----------------------------------------------------------------------
# HTTP Core Module
#
# http://wiki.nginx.org/NginxHttpCoreModule
#
#----------------------------------------------------------------------

http {
include /etc/nginx/mime.types;
default_type application/octet-stream;

log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;

sendfile on;
#tcp_nopush on;

#keepalive_timeout 0;
keepalive_timeout 65;

#gzip on;

#
# The default server
#
server {
listen 80;
server_name _;

#charset koi8-r;

#access_log logs/host.access.log main;

location / {
root /usr/share/nginx/html;
index index.html index.htm;
}

error_page 404 /404.html;
location = /404.html {
root /usr/share/nginx/html;
}
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root /usr/share/nginx/html;
}

# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
location ~ \.php$ {
proxy_pass http://127.0.0.1;
}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
location ~ \.php$ {
root /var/www/html;
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}

# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}

# Load config files from the /etc/nginx/conf.d directory
include /etc/nginx/conf.d/*.conf;

}