Nginx 413 request entity too large

How do I fix this problem and allow image upload upto 2MB in size using nginx web-server working in reverse proxy or stand-alone mode on Unix like operating systems?

You need to configure both nginx and php to allow upload size.

Increase "client_max_body_size" but I am unable to find nginx installed on my server.

# vi /etc/nginx/nginx.conf

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;

    fastcgi_read_timeout 300;

    #gzip  on;

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

    # The default server is in conf.d/default.conf

    include /etc/nginx/conf.d/*.conf;

     client_max_body_size 100m;

}

to check if the config file exists, but I couldnt find it on my server.

Is there anyway to resolve this issue? Or do I have to installed nginx on my server.

EDIT:

# vi /etc/php.ini

I have made all necessary changes in my php.ini files,

.....

; Maximum size of POST data that PHP will accept.

; http://www.php.net/manual/en/ini.core.php#ini.post-max-size

post_max_size = 128M

.....

.

.

.

; Maximum allowed size for uploaded files.

; http://www.php.net/manual/en/ini.core.php#ini.upload-max-filesize

upload_max_filesize = 100M

; Maximum amount of memory a script may consume (128MB)

; http://www.php.net/manual/en/ini.core.php#ini.memory-limit

memory_limit = 128M 

Reload PHP-FPM & Nginx

Don’t forget to do this so that changes you have made will come into effect:

# service php5-fpm reload

# service nginx reload