Installation of VLS, k3s is described here.
Download k3s config:
scp -T root@116.203.117.157:"/etc/rancher/k3s/k3s.yaml" ~/Desktop/k3s.yaml
The DNS is created manually and is configured via cloudflare webui. There is an A and an AAAA entry configured in cloudflare which map the domain name to the vls ipv4 and ipv6 address. You may need to configure a new CNAME for every subdomain you want to use.
The domain weyrich.dev is bought on namecheap (14€ a year) and can be managed via the webui. To configure namecheap to use the cloudflare DNS follow the instructions.