Edit nginx.conf or vhost configuration file and modify or add following line adjusting the desired size.:



If your site is most probably using PHP, nginx also needs to set the following php parameter:

Unlike Apache (see https://forum.ivorde.com/apache-how-to-list-virtual-hosts-that-are-currently-configured-on-my-apache-server-t53.html), nginx does not have, at the time of this writing, a builtin option to list configured virtual hosts, so in order to lists vhosts in Nginx web server, all nginx configuration files should be checked for the key "server_name" that are not commented (lines begin with #).

How to list virtual hosts configured in NGINX

root@ubuntu-vpsie:~# find /etc/nginx/ -type f -name "*.conf" -print0 | xargs -0 egrep '^(\s|\t)*server_name'
/etc/nginx/conf.d/server1.conf: server_name ...

It is a good practice to run a website purely on https and not http for obvious reason. If both http and https services are configured to run properly, first step to take is to redirect http to https within nginx configuration. For this, there are two "server" section, one for each http(s) service.

How to redirect http to https service in nginx configuration permanently - HTTP 301 status code:

server {
server_name server.ivorde.ro;
listen ...

NGINX uses "listen" and "server_name" directives to define a virtual host. A web server virtual host denotes the part in the configuration that specifies what domain to serve based on the "Host:" attribute in the HTTP/1.1 request header sent by the client (browser).

In some cases, NGINX receives requests on the IP address that it listens for domains that it does not host or the IP address. To serve all these requests from a default ...

It's a known thing that php extensions load order is important. Thus, the session extension has to be one of the first to be loaded (as per ...

After installing php gmagick module and graphicks magick utility using ./configure --enable-shared configure options, I ran into following php(I thought) error when trying to use graphicks magick to alter a JPG image:


This is because graphics magick ./configure --help does not show that you need to explicitly enable jpeg format support:
# ./configure --help 2>&1 | grep -iE "jpg|jpeg"
--without-jpeg disable JPEG support
--without-jp2 disable JPEG v2 ...

Recent version of PHP support the PHP_VALUE command for fcgi processes. This means that php ini directives can be configured for each Nginx virtual host individually.
The trick is that multiple values need to be set in one "fastcgi_param PHP_VALUE" directive with a newline character as separator otherwise only the last one will be used by the php process.

Configure php upload_max_filesize from nginx fastcgi parameters

The upload_max_filesize php ini configuration sets the maximum size ...

Apache - how to strip down the "Server" field in HTTP response header with ServerTokens

By default, the apache webserver may provide too detailed info in the http response header for your needs. Example:



Stripping down the "Server" field in the http response can be done in ...

When ran as Apache module, PHP will get $_SERVER variables in the form that they come in the request:
Content-Type, Content-Length, X-File-Size, X-File-Name and so on.


When ran as PHP-FPM with NGINX, php will see the $_SERVER variables in a totally different way (this is because of the default passing of server parameters to fcgi scripts in nginx).

Here's how $_SERVER variables will be seen by php when ran as php-fpm:
Array ( [USER] => ...

To test a server for deflate/gzip compression, it needs to be notified that you, as a client (browser) accept compressed encoding.

This is done, by adding an "Accept-Encoding: compress, gzip" in the header of the request.

Testing an https Apache server for deflate/gzip compression, initiating a connection using openssl client
$ openssl s_client -connect 192.168.1.1:443
...Some output about ssl certificate and ssl protocol and cipher used....
GET / HTTP/1.1
Host: test.server.ro
Accept-Encoding: compress, gzip -->press ...