Reblog of Securing Ubiquiti UniFi Cloud Key with Let’s Encrypt SSL and automatic dns-01 challenge

The following was lifted from here:

I’m reposting it so i have easy access to it. This is not my work, nor did I have anything to do with it.

curl | sh

Exit the terminal and re-open it again. We will also enable auto-upgrade for (the –accountemail will be used for Let’s Encrypt email notifications when certs are renewed): --upgrade --auto-upgrade --accountemail "[email protected]"

To automate the certificate installation, create the file /root/ – no adjustments are needed:

# Renew-hook for ACME / Let's encrypt
echo "** Configuring new Let's Encrypt certs"
cd /etc/ssl/private
rm -f /etc/ssl/private/cert.tar /etc/ssl/private/unifi.keystore.jks /etc/ssl/private/ssl-cert-snakeoil.key /etc/ssl/private/fullchain.pem

openssl pkcs12 -export -in /etc/ssl/private/cloudkey.crt -inkey /etc/ssl/private/cloudkey.key -out /etc/ssl/private/cloudkey.p12 -name unifi -password pass:aircontrolenterprise

keytool -importkeystore -deststorepass aircontrolenterprise -destkeypass aircontrolenterprise -destkeystore /usr/lib/unifi/data/keystore -srckeystore /etc/ssl/private/cloudkey.p12 -srcstoretype PKCS12 -srcstorepass aircontrolenterprise -alias unifi

rm -f /etc/ssl/private/cloudkey.p12
tar -cvf cert.tar *
chown root:ssl-cert /etc/ssl/private/*
chmod 640 /etc/ssl/private/*
echo "** Testing Nginx and restarting"
/usr/sbin/nginx -t
/etc/init.d/nginx restart ; /etc/init.d/unifi restart
export CF_Email="YOUR-CLOUDFLARE-EMAIL" --force --issue --dns dns_cf -d --pre-hook "touch /etc/ssl/private/cert.tar; tar -zcvf /root/`date +%Y-%m-%d_%H.%M.%S`.tgz /etc/ssl/private/*" --fullchainpath /etc/ssl/private/cloudkey.crt --keypath /etc/ssl/private/cloudkey.key --reloadcmd "sh /root/"

Since the Let’s Encrypt certificate needs to be renewed every 3 months, you need to configure the auto-renew via a cronjob through crontab -e and append the following to the end of the crontab:

# minute hour dayofmonth month dayofweek commandto run
0 0 * * * "/root/"/ --cron --home "/root/" >> /var/log/letsencrypt.log
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