Nginx 指令

Nginx 由由配置文件中定义的指令控制的模块组成。指令分为两部分:

简单指令: 简单指令由名称和参数组成，以空格分隔并以分号(;) 结尾。
块指令: 块指令的结构类似于简单指令，但它不是分号，而是以花括号({和})包围的一组附加指令结尾。如果块指令可以在大括号内包含其他指令，则它被称为上下文。例如。事件、http、位置和服务器。

置于任何上下文之外的配置文件中的指令被视为在主上下文中。 events 和 http 指令位于 main 上下文中，服务器位于 http 和 location 在服务器中。

让我们看看一些重要指令的列表:

指令	语法	默认	上下文
absolute_redirect	absolute_redirect on \| off;	absolute_redirect on;	http, server, location
accept_mutex	accept_mutex on \| off;	off	Events
accept_mutex_delay	accept_mutex_delay time;	accept_mutex_delay 500ms;	Events
access_log(ngx_http_log_module)	access_log path [format [buffer=size] [gzip[=level]] [flush=time] [if=condition]];access_log off;	access_log logs/access.log combined;	http, server, location, if in location, limit_except
access_log(ngx_stream_log_module)	access_log 路径格式 [buffer=size] [gzip[=level]] [flush=time] [if=condition];access_log off;	access_log off;	stream, server
add_after_body	add_before_body uri;	-	http, server, location
add_before_body	add_before_body uri;	-	http, server, location
add_header	add_header name value [always];	-	http, server, location, if in location
add_trailer	add_trailer name value [always];	-	http, server, location, if in location
addition_types	addition_types mime-type ...;	addition_types text/html;	http, server, location
aio	aio on \| off \| threads[=pool];	aio off;	http, server, location
aio_write	aio_write on \| off;	aio_write off;	http, server, location
alias	alias path;	-	Location
allow (ngx_http_access_module)	allow address \| CIDR \| unix: \| all;	-	http, server, location、limit_except
allow (ngx_stream_access_module)	allow address \| CIDR \| unix: \| all;	-	Stream, server
ancient_browser	ancient_browser string ...;	-	http, server, location
ancient_browser_value	ancient_browser_value string;	ancient_browser_value 1;	http, server, location
api	api [write=on\|off];</td>	-	location
auth_basic	auth_basic string \| off;	auth_basic off;	http, server, location、limit_except
auth_basic_user_file	auth_basic_user_file 文件；	-	http, server, location、limit_except
auth_http	auth_http 网址；	-	mail, server
auth_http_header	auth_http_header 头值；	-	mail, server
auth_http_pass_client_cert	auth_http_pass_client_cert 开启 \| off;	auth_http_pass_client_cert 关闭；	mail, server
auth_http_timeout	auth_http_timeout 时间	auth_http_timeout 60s;	mail, server
auth_jwt	auth_jwt string [token=$variable] \| off;	auth_jwt off;	http, server, location、limit_except
auth_jwt_claim_set	auth_jwt_claim_set $variable name ...;	-	http
auth_jwt_header_set	auth_jwt_header_set $variable name ...;	-	http
auth_jwt_key_file	auth_jwt_key_file 文件；	-	ttp, server, location, limit_except
auth_jwt_key_request

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变量是编程语言的自然组成部分。这些只是在 Perl、C/C++、Bourne shell、Perl 等命令式语言中保存各种值的容器。值可以是像"hello world"这样的字符串，像"3.14"这样的数字，甚至是复杂的东 ...

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