Used Let's Encrypt to secure Ubuntu 14.04/Nginx server (failed tutorial)

I followed the DO tutorial “How to secure Nginx with Let’s Encrypt on Ubuntu 14.04,” but when I open my site in the browser (Firefox) it does not show as secure (https://). The certbot tells me that I have a valid cert. All the .pem files are present. I am at a loss. I am running Ghost 0.11.1 on Ubuntu 14.04 Nginx.

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Are you sure you followed whole tutorial you linked? As far as I see, there is no any directive for SSL. Also it is listening on HTTP (80) port instead of HTTPS (443). [How To Secure Nginx with Let’s Encrypt on Ubuntu 14.04] describes what you need to change in Nginx config file to use SSL.

First of all make sure you created Diffie-Hellman Group located at /etc/ssl/certs/dhparam.pem. If you did it, make sure you follow said tutorial from Step 3 — Configure TLS/SSL on Web Server (Nginx).

Your server block should look something like:

server {
    listen 443 ssl default_server;
    listen [::]:443 ssl default_server;
    server_name; # Replace with your domain

    ssl_certificate /etc/letsencrypt/live/;
    ssl_certificate_key /etc/letsencrypt/live/;

    root /usr/share/nginx/html;
    index index.html index.htm;

    client_max_body_size 10G;

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_dhparam /etc/ssl/certs/dhparam.pem;
    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-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_buffering off;
# Redirect all HTTP (80) traffic to HTTPS (443)
server {
    listen 80 default_server;
    listen [::]:80 default_server;
    return 301 https://www.$server_name$request_uri;

If you created some other config file in /etc/nginx/sites-available make sure you made symbolic link from /etc/nginx/sites-available/ to /etc/nginx/sites-enabled. Also make sure old one is disabled.

Make sure you restarted or reloaded nginx sudo systemctl restart nginx. Don’t forget to change to your domain ;)

That did it! I had improperly linked the /etc/nginx/sites-available/ to /etc/nginx/sites-enabled/ Thanks for the help!!!