apt install wget -y
wget -O - https://packagecloud.io/install/repositories/crowdsec/crowdsec/script.deb.sh | bash
apt install crowdsec -y 
sed 's/config.yaml$/config.yaml -no-api/' /lib/systemd/system/crowdsec.service > /etc/systemd/system/crowdsec.service
systemctl daemon-reload
systemctl enable --now crowdsec
cscli lapi register -u https://crowdsec.domaine.com --machine <nom>
systemctl reload crowdsec

Sur le serveur avec l'api

cscli machines validate <nom>