Syntax: server_tokens on | off | string; Default: server_tokens on; Context: http, server, location Enables or disables emitting nginx version in error messages and in the “Server” response header field. Additionally, as part of our commercial subscription, starting from version 1.9.13 the signature in error messages and the “Server” response header field value can be set explicitly using the string with variables. An empty string disables the emission of the “Server

Syntax: uwsgi_bind address [transparent] | off; Default: — Context: http, server, location Makes outgoing connections to a uwsgi server originate from the specified local IP address with an optional port (1.11.2). Parameter value can contain variables (1.3.12). The special value off (1.3.12) cancels the effect of the uwsgi_bind directive inherited from the previous configuration level, which allows the system to auto-assign the local IP address and port. The transpar

Syntax: scgi_next_upstream_timeout time; Default: scgi_next_upstream_timeout 0; Context: http, server, location This directive appeared in version 1.7.5. Limits the time during which a request can be passed to the next server. The 0 value turns off this limitation.

Syntax: proxy_ssl_ciphers ciphers; Default: proxy_ssl_ciphers DEFAULT; Context: http, server, location This directive appeared in version 1.5.6. Specifies the enabled ciphers for requests to a proxied HTTPS server. The ciphers are specified in the format understood by the OpenSSL library. The full list can be viewed using the “openssl ciphers” command.

Syntax: proxy_pass_request_body on | off; Default: proxy_pass_request_body on; Context: http, server, location Indicates whether the original request body is passed to the proxied server. location /x-accel-redirect-here/ { proxy_method GET; proxy_pass_request_body off; proxy_set_header Content-Length ""; proxy_pass ... } See also the proxy_set_header and proxy_pass_request_headers directives.

Syntax: scgi_bind address [transparent] | off; Default: — Context: http, server, location Makes outgoing connections to an SCGI server originate from the specified local IP address with an optional port (1.11.2). Parameter value can contain variables (1.3.12). The special value off (1.3.12) cancels the effect of the scgi_bind directive inherited from the previous configuration level, which allows the system to auto-assign the local IP address and port. The transparen

Syntax: proxy_ssl_server_name on | off; Default: proxy_ssl_server_name off; Context: http, server, location This directive appeared in version 1.7.0. Enables or disables passing of the server name through TLS Server Name Indication extension (SNI, RFC 6066) when establishing a connection with the proxied HTTPS server.

Syntax: directio_alignment size; Default: directio_alignment 512; Context: http, server, location This directive appeared in version 0.8.11. Sets the alignment for directio. In most cases, a 512-byte alignment is enough. However, when using XFS under Linux, it needs to be increased to 4K.

Syntax: real_ip_header field | X-Real-IP | X-Forwarded-For | proxy_protocol; Default: real_ip_header X-Real-IP; Context: http, server, location Defines the request header field whose value will be used to replace the client address. The X-Real-IP and X-Forwarded-For parameters may contain an optional port (1.11.0). The address and port should be specified according to RFC 3986. The proxy_protocol parameter (1.5.12) changes the client address to the one from the

Syntax: zone name [size]; Default: — Context: upstream Defines the name and size of the shared memory zone that keeps the group’s configuration and run-time state that are shared between worker processes. Several groups may share the same zone. In this case, it is enough to specify the zone size only once. Additionally, as part of our commercial subscription, such groups allow changing the group membership or modifying the settings of a particular server without the need of resta