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### Let's Encrypt with nginx and Debian Jessie

Client software is in jessie-backports, so:

    sudo apt-get install letsencrypt -t jessie-backports

Need files to show up for each domain at:

    http://<domain>/.well-known/acme-challenge/<somehash>

So create a global dir with:

    sudo mkdir -p /var/www/letsencrypt
    sudo chown www-data:www-data /var/www/letsencrypt

And to each domain's nginx config:

    # Let's Encrypt SSL Certs
    location /.well-known/acme-challenge/ {
        root /var/www/letsencrypt;
        autoindex off;
    }

Don't forget to `nginx reload`.

Then, for each separate certificate (all these domains will end up on the same
cert), do something like this:

    # Add --dry-run  to test...
    sudo letsencrypt certonly \
        --non-interactive \
        --agree-tos \
        --email webmaster@bnewbold.net \
        --webroot -w /var/www/letsencrypt \
                                -d bnewbold.net -d www.bnewbold.net \
                                -d goblin.bnewbold.net \
                                -d know.bnewbold.net \
                                -d static.bnewbold.net \
                                -d git.bnewbold.net

The above will yield a cert at the following path (presumably path has the
first domain name):

    /etc/letsencrypt/live/bnewbold.net/fullchain.pem

Add a daily cronjob to do updates of these certs:

    # first check that updates work: sudo letsencrypt renew
    sudo crontab -e
    # add a line like:
    @daily letsencrypt renew --quiet

Finally, add blocks like in HOWTO_new_site.txt to each domain's nginx config.


To force https-only:

    location / {
        if ($scheme = http) {
            return 301 https://$server_name$request_uri;
        }
    }