Installing and maintaining an Open-SSL Certificate

https://gist.github.com/cecilemuller/a26737699a7e70a7093d4dc115915de8

Configure NginX (with initial settings, before SSL)

server {
    server_name jsjobs.us; #or whatever domain
    listen 80;
    listen [::]:80;

    location ~ /\.well-known/acme-challenge {
        default_type "text/plain";
        root /www/sslcert; #or wherever dir
        try_files /$uri /;
    }

}

Then install certificate

sudo apt-get install software-properties-common
sudo add-apt-repository ppa:certbot/certbot
sudo apt-get update
sudo apt-get install certbot
mkdir /www/sslcert #or wherever you want to put it
certbot certonly --webroot --agree-tos --no-eff-email --email ps@artspaces.net -w /www/sslcert -d jobs.paulshorey.com

If paths in server configuration are correct. Notice it says /etc/letsencrypt/live/jobs.paulshorey.com/privkey.pem

Using the webroot path /www/sslcert for all unmatched domains.
Waiting for verification...
Cleaning up challenges

IMPORTANT NOTES:
 - Congratulations! Your certificate and chain have been saved at:
   /etc/letsencrypt/live/jobs.paulshorey.com/fullchain.pem
   Your key file has been saved at:
   /etc/letsencrypt/live/jobs.paulshorey.com/privkey.pem
   Your cert will expire on 2018-05-25. To obtain a new or tweaked
   version of this certificate in the future, simply run certbot
   again. To non-interactively renew *all* of your certificates, run
   "certbot renew"
 - If you like Certbot, please consider supporting our work by:

   Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donate
   Donating to EFF:                    https://eff.org/donate

Test that renewal will work:

sudo certbot renew --dry-run

Create weekly.sh script that /etc/crontab runs weekly, to auto-update

sudo certbot renew
service nginx restart

Create config snippet in /etc/nginx/snippets/ssl.conf to use later:

ssl_session_timeout 1d;
ssl_session_cache shared:SSL:50m;
ssl_session_tickets off;

ssl_protocols TLSv1.2;
ssl_ciphers EECDH+AESGCM:EECDH+AES;
ssl_ecdh_curve secp384r1;
ssl_prefer_server_ciphers on;

ssl_stapling on;
ssl_stapling_verify on;

add_header Strict-Transport-Security "max-age=15768000; includeSubdomains; preload";
add_header X-Frame-Options DENY;
add_header X-Content-Type-Options nosniff;

Update server config to include port 443 and app logic

server {
    server_name jsjobs.us;
    listen 80;
    listen [::]:80;
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    ssl_certificate /etc/letsencrypt/live/jsjobs.us/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/jsjobs.us/privkey.pem;
    ssl_trusted_certificate /etc/letsencrypt/live/jsjobs.us/fullchain.pem;
    include /etc/nginx/snippets/ssl.conf;

    location / {
        proxy_set_header   X-Forwarded-For $remote_addr;
        proxy_set_header   Host $http_host;
        proxy_pass         "http://localhost:3000";
    }
    location /api/v1 {
        proxy_set_header   X-Forwarded-For $remote_addr;
        proxy_set_header   Host $http_host;
        proxy_pass         "http://localhost:1080";
    }

    location /static {
        root /www/jsjobs/app/build/public;
        try_files $uri /;
    }

    location ~ /\.well-known/acme-challenge {
        default_type "text/plain";
        root /www/sslcert;
        try_files /$uri /;
    }

}

Here...

  1. /*:80 is forwarded to /*:3000
  2. /api*:80 is forwarded to /api*:1080
  3. and everything is served over https, which is port :443

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