Mastering Nginx

Appendix A

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Directive Explanation Context/Default

debug_connection Enables debug logging for any

client matching the value of this

directive. It may be specified

multiple times. To debug UNIX-

domain sockets, use unix:.

Valid contexts: events

Default value: -

debug_points When debugging, the process will
either create a core file (abort)
or stop (stop) so that a system
debugger may be attached.

Valid context: main

Default value: -

default_type Sets the default MIME type of a
response. This comes into play if
the MIME type of the file cannot
be matched to one of those
specified by the types directive.

Valid contexts: http,

server, location

Default value: text/

plain

deny Denies access from this IP address,
network, or all.

Valid contexts: http,

server, location,

limit_except

Default value: -

directio Enables the operating system-
specific flag or function for serving
files larger than the parameter
given. Required when using aio
on Linux.

Valid contexts: http,

server, location

Default value: off

directio_alignment Sets the alignment for
directio. The default of 512
is usually enough, although it's
recommended to increase this to
4K when using XFS on Linux.

Valid contexts: http,

server, location

Default value: 512

disable_symlinks Refer to the HTTP file path
directives table in the Finding files
section in Chapter 6, The NGINX
HTTP Server.

Valid contexts: http,

server, location

Default value: off

empty_gif Causes a 1x1 pixel transparent GIF

to be emitted for that location.

Valid context:

location

Default value: -