feature:初始化代码结构

sites-available/a_default

@@ -0,0 +1,18 @@
+server {
+    listen 80 default_server;
+    server_name _;
+    return 444;
+}
+
+server {
+    listen 443 ssl default_server;
+    server_name _;
+
+    ssl_certificate /etc/letsencrypt/live/tradewind.vip/fullchain.pem; # managed by Certbot
+    ssl_certificate_key /etc/letsencrypt/live/tradewind.vip/privkey.pem; # managed by Certbot
+#    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
+#    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
+
+    return 444;
+}
+