"proxy_pass"正则表达式不能在位置中包含URI部分 [英] "proxy_pass" cannot have URI part in location given by regular expression
问题描述
我已经开发了一个URL缩短Web应用程序.
I've developed a URL shortening web application.
它由两个单独的Docker容器组成:一个包含后端REST api,另一个包含前端静态网站.
It consists of two separate docker containers: one containing the backend REST api and another containing the frontend static website.
这两个容器链接到nginx容器. 此Nginx容器的配置如下:
These two containers are linked to an nginx container. The configuration for this nginx container is below:
worker_processes 1;
events { worker_connections 1024; }
http {
upstream api {
server short-url:8080;
}
upstream frontend {
server short-url-frontend:8081;
}
gzip on;
gzip_vary on;
gzip_min_length 860;
gzip_proxied expired no-cache no-store private auth;
gzip_types text/plain text/css text/xml application/javascript application/x-javascript application/xml;
gzip_disable "MSIE [1-6]\.";
server {
listen 80;
root /user/share/nginx/html;
location /urlshortener/v1 {
proxy_pass http://api/urlshortener/v1;
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Host $server_name;
}
location ~ ^/([A-Za-z0-9]+) {
rewrite ^/([A-Za-z0-9]+) /$1
proxy_pass http://api/urlshortener/v1;
}
location / {
proxy_pass http://frontend;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-for $remote_addr;
}
}
}
如果url以/urlshortening/v1
结尾,则表示代理到后端.
If a url ends with /urlshortening/v1
, I'm proxying to the backend.
如果网址以/
开头,则表示代理到前端.
If a url starts with /
, I'm proxying to the frontend.
缩短的网址,例如/3xTy
或/a0q
需要代理到后端,以便可以将用户导航到原始URL.为此,我用正则表达式定义了一个位置.
Shortened urls e.g. /3xTy
or /a0q
need to be proxied to the backend so that the user can be navigated to the original url. In order to do this, I've defined a location with a regular expression.
location ~ ^/([A-Za-z0-9]+) {
rewrite ^/([A-Za-z0-9]+) /$1
proxy_pass http://api/urlshortener/v1;
}
此代码段给我以下错误:
This block of code gives me the following error:
2018/11/17 16:47:03 [emerg] 1#1:"proxy_pass"不能在正则表达式指定的位置,命名位置内部,"if"语句内部或"limit_except"内部具有URI部分"/etc/nginx/nginx.conf:36
2018/11/17 16:47:03 [emerg] 1#1: "proxy_pass" cannot have URI part in location given by regular expression, or inside named location, or inside "if" statement, or inside "limit_except" block in /etc/nginx/nginx.conf:36
我已经查看了几个示例,并查看了答案的数量,我相信我的配置应该可以使用.有人可以解释为什么我会收到此错误吗?
I've gone through several examples and reviewed a number of answers and I believe that the configuration I have should work. Can someone please explain why I'm getting this error?
推荐答案
如果在正则表达式 location
中使用带有proxy_pass
语句的URI,则需要构建整个URI使用一个或多个变量.有关详细信息,请参见本文档.
If you use a URI with a proxy_pass
statement within a regular expression location
, you need to build the entire URI using one or more variables. See this document for details.
因此,替代方法是(1),从location
表达式中捕获URI,并将其添加到proxy_pass
语句中.例如:
So the alternatives are to (1), capture the URI from the location
expression and add it to the proxy_pass
statement. For example:
location ~ ^/([A-Za-z0-9]+) {
proxy_pass http://api/urlshortener/v1/$1;
}
或(2),使用不带URI部分的proxy_pass
,并使用rewrite...break
构造所需的URI.例如:
Or (2), use proxy_pass
without a URI part, and construct the desired URI using a rewrite...break
. For example:
location ~ ^/([A-Za-z0-9]+) {
rewrite ^/([A-Za-z0-9]+) /urlshortener/v1/$1 break;
proxy_pass http://api;
}
有关详细信息,请参见此文档.
See this document for details.
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