Nginx不在上游服务器上重定向

Question

我需要在上游服务器上重定向输入错误的API请求。 我正在尝试将请求从localhost：1337 / streaminfo重定向到localhost：1337 / streaminfos。 这是我下面的配置。当我将其移到上游的前端时，重定向工作正常，但在CMS上却没有。

upstream frontend {
    server frontend:3000;
}
upstream cms {
    server cms:1337;
}
upstream backend {
    server backend:4000;
}
server {
    listen 80;
    proxy_http_version 1.1;
    proxy_set_header  X-Forwarded-For    \$proxy_add_x_forwarded_for;
    proxy_set_header  Host               \$http_host;
    proxy_set_header  X-Real-IP          \$remote_addr;
    proxy_set_header  X-Forwarded-Proto  \$scheme;
    proxy_set_header Accept-Encoding "";
    location / {
        proxy_pass http://frontend/;
        proxy_redirect default;
        proxy_http_version 1.1;
        proxy_set_header Upgrade \$http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host \$host;
        auth_basic "Restricted Access";
        auth_basic_user_file /etc/nginx/.htpasswd;
    }
    location /api/ {
        proxy_pass http://backend/;
        proxy_redirect default;
    }
}
server {
    listen 81;
    proxy_http_version 1.1;
    proxy_set_header  X-Forwarded-For    \$proxy_add_x_forwarded_for;
    proxy_set_header  Host               \$http_host;
    proxy_set_header  X-Real-IP          \$remote_addr;
    proxy_set_header  X-Forwarded-Proto  \$scheme;
    proxy_set_header Accept-Encoding "";
    client_max_body_size 100M;
    location /streaminfo {
        rewrite ^/streaminfo /streaminfos redirect;
        proxy_pass http://cms/;
        proxy_redirect default;
    }
    location / {
        proxy_pass http://cms/;
        proxy_redirect default;
    }