mkdir -p /etc/nginx
htpasswd -c /etc/nginx/.htpasswd admin

http {
    server {
        listen 12321;
 
        location /prometheus {
            auth_basic           "Prometheus";
            auth_basic_user_file /etc/nginx/.htpasswd;
 
            proxy_pass           http://localhost:9090/;
        }
    }
}
 
实际访问地址：http://localhost:12321/prometheus/metrics