Nginx 任意域名反向代理

nginx-map-proxy.conf

map $host $proxy_upstream_mapped {
    hostnames;
    helm-charts-proxy.*      'https://kubernetes-charts.storage.googleapis.com';
    gitlab-registry-proxy.*  'https://registry.gitlab.com';
    quay-registry-proxy.*    'https://quay.io';
    default                  'https://httpbin.org';
}

server {
    listen 80;
    server_name *.example.com;

    resolver 8.8.8.8;

    location / {
        proxy_pass $proxy_upstream_mapped;
        proxy_intercept_errors on;
        error_page 301 302 307 = @handle_redirect;
    }

    location @handle_redirect {
        set $saved_redirect_location '$upstream_http_location';
        proxy_pass $saved_redirect_location;
    }
}

nginx-proxy.conf

server {
    listen 80;
    server_name localhost;

    resolver 8.8.8.8 ipv6=off;

    location / {
        return 400;
    }

    location ~ ^(/proxy)?/(http|https)/(.*?)/ {
        rewrite ^(/proxy)?/(http|https)/(.*?)/(.*) /$4 break;

        #proxy_ssl_verify off;
        proxy_ssl_server_name on;
        proxy_set_header Host $3;
        proxy_redirect   off;
        proxy_pass $2://$3;
        proxy_intercept_errors on;
        error_page 301 302 307 = @handle_redirect;
    }

    location @handle_redirect {
        set $saved_redirect_location '$upstream_http_location';
        proxy_pass $saved_redirect_location;
    }
}