k3s-ansible/inventory/sample/hosts.ini

[master]
192.168.30.38
192.168.30.39
192.168.30.40

[node]
192.168.30.41
192.168.30.42

# only required if proxmox_lxc_configure: true
# must contain all proxmox instances that have a master or worker node
# [proxmox]
# 192.168.30.43

[k3s_cluster:children]
master
node