added LE processing, updated error pages

availableSites/redirectHTTPS.conf

@@ -12,4 +12,17 @@ server {
 
     # redirect to properly formed HTTPS request
     return 301 https://$host$request_uri;
+
+    # error pages
+    error_page 404 /404.html;
+    location = /404.html {
+        root /usr/share/nginx/html;
+        internal;
+    }
+
+    error_page 500 502 503 504 /50x.html;
+    location = /50x.html {
+        root /usr/share/nginx/html;
+        internal;
+    }
 }

availableSites/redirectHTTPS_LE.conf

@@ -0,0 +1,42 @@
+#######
+### NGINX server configuration
+### Redirect to secure connection
+### Process LetsEncrypt verification requests
+#######
+
+server {
+    listen 80;
+    listen [::]:80;
+
+    # specify server name(s)
+    include /etc/nginx/snippets/server_names.conf;
+
+    # redirect to properly formed HTTPS request
+    location / {
+        return 301 https://$host$request_uri;
+    }
+
+    # process LetsEncrypt requests
+    location ^~ /.well-known/acme-challenge {
+        # log requests to review issued certs or for security auditing
+        access_log /var/log/nginx/LetsEncrypt_access.log main;
+        error_log /var/log/nginx/LetsEncrypt_error.log warn;
+
+        default_type text/plain;
+        root /usr/share/nginx/html/letsencrypt;
+        autoindex on;
+    }
+
+    # error pages
+    error_page 404 /404.html;
+    location = /404.html {
+        root /usr/share/nginx/html;
+        internal;
+    }
+
+    error_page 500 502 503 504 /50x.html;
+    location = /50x.html {
+        root /usr/share/nginx/html;
+        internal;
+    }
+}