landscape

apt-get install landscape-client

cd /etc/landscape

wget https://letsencrypt.org/certs/letsencryptauthorityx3.pem.txt

mv letsencryptauthorityx3.pem.txt letsencryptauthorityx3.pem

landscape-config --computer-title "TEMP" --account-name standalone  --url https://control.wjw.nz/message-system --ping-url https://control.wjw.nz/ping --ssl-public-key /etc/landscape/letsencryptauthorityx3.pem