acme.sh + Proxmox VE

cloudflare-pve-acme.sh

# CloudFlare API
#
# Please install "acme.sh" before runnung this script. 
# curl https://get.acme.sh/ | sh
#
export CF_Email="[email protected]"
export CF_Key="Your_CloudFlare_API_Key"

/root/.acme.sh/acme.sh --issue \
-d $DOMAIN \
--dns dns_cf --dnssleep 30 \
--fullchain-file /etc/pve/local/pveproxy-ssl.pem \
--key-file /etc/pve/local/pveproxy-ssl.key  \
--reloadcmd "systemctl restart pveproxy"

gandi-pve-acme.sh

# Gandi.net API
#
# Please install "acme.sh" before runnung this script. 
# curl https://get.acme.sh/ | sh
#
DOMAIN="pve.example.com"
export GANDI_LIVEDNS_KEY="YOURKEY"

/root/.acme.sh/acme.sh --issue \
-d $DOMAIN \
--dns dns_gandi_livedns --dnssleep 30 \ 
--fullchain-file /etc/pve/local/pveproxy-ssl.pem \
--key-file /etc/pve/local/pveproxy-ssl.key  \
--reloadcmd "systemctl restart pveproxy"

We have updated a bit the
gandi-pve-acme.sh
file here:
https://gist.github.com/assodefis/2414e96d794171581aabaad88d14e1f9

Thank you, it was a good start!