Let's Encrypt for Kemp Load Balancers

The bound /etc/letsencrypt/configs folder should have:

• 1 or more *.conf files for certbot to consume
• 0 or more *.pre.sh files to to any changes before running certbot
• 0 or more *.post.sh files to push the certificate to the Kemp

Post files

The *.post.sh files should be executable (chmod +x *.post.sh) and look roughly like so:

#!/bin/sh
DIR=`ls -1dt /etc/letsencrypt/live/my.domain* | head -n1`
CERT="$DIR/cert.pem"
KEY="$DIR/privkey.pem"

cat $CERT $KEY > /tmp/comb.pem
curl -X POST --data-binary "@/tmp/comb.pem" -k "https://user:pass@my.kemp.address/access/addcert?cert=cert_name&replace=1"
rm /tmp/comb.pem

Sometimes certbot will generate directories with -#### appended, so the above script will use wildcards to find the most recently created directory.

To run:

docker run -d -p 80:80 -v /non_container_storage/letsencrypt:/etc/letsencrypt kemp-lets-encrypt