在ubuntu 14.04上nginx上的nodejs的letsencrypt ssl不能正常工作

Question

我已成功部署了一个在localhost:8000上运行的nodejs应用，并且重定向到端口80.

我还使用letsencrypt＆＃39; s certbot成功生成了.pem文件和ssl证书。所有文件都放在应有的位置。

但是，当通过https访问域名时，它无效。

这是我的nginx设置。

server {
    listen 80;
    listen [::]:80 default_server ipv6only=on;
    return 301 https://$host$request_uri;
}


server {
    listen 443 ssl;
    listen [::]:443 ssl;
    server_name sample.com;

    ssl_certificate /etc/letsencrypt/live/sample.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/sample.com/privkey.pem;

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_dhparam /etc/ssl/certs/dhparam.pem;
    ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AE$';
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:50m;
    ssl_stapling on;
    ssl_stapling_verify on;
    add_header Strict-Transport-Security max-age=15768000;

    location / {
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-NginX-Proxy true;
            proxy_pass http://localhost:8000;
            proxy_ssl_session_reuse off;
            proxy_set_header Host $http_host;
            proxy_cache_bypass $http_upgrade;
            proxy_redirect off;
    }
}

更新

禁用ufw时，非http应用正在运行，否则无效。

1. ufw enabled = http和https无效
2. ufw disabled = http工作但不是https