Create a Proxmox VM with Cloud-Init: clone, network & firewall

Our Cloud-Init templates (e.g. cloudinit-ubuntu22.04, cloudinit-debian12) are available in Proxmox. MagicHosting support handles the Proxmox installation and host setup. Cloud-Init templates are provided free of charge by MagicHosting for customers only. If you are interested, simply open a ticket and we will set up the templates for you.

• Select template (e.g. cloudinit-ubuntu22.04)
• Right-click → Clone
• Mode: Full Clone
• Assign new VMID
• Set hardware: CPU, RAM, disk
• Assign name
• Select storage

VM → Cloud-Init

• Login: Enter username and password
• Network: Enter IP, gateway and DNS (see example below)
• Save, then Cloud-Init → Regenerate Image

IP      YOUR-IP/24
Gateway  GATEWAY-IP
DNS      8.8.8.8 1.1.1.1

VM → Hardware

• CPU: host
• CPU limit (cpulimit): ideally set to 0 (no limit)
• SCSI Controller: VirtIO SCSI
• Disk: VirtIO
• Network: VirtIO, Bridge: vmbr0

• Datacenter → Firewall → Options → Firewall: Yes
• Node → Firewall → Options → Firewall: Yes

VM → Firewall → Options

• Firewall: Yes
• Input Policy: DROP
• Output Policy: ACCEPT
• IP-Set: must also be enabled (see step 6)

VM → Firewall → IPSet → Create

• Name: e.g. ipfilter-net0
• Add entry: e.g. 5.175.192.223 – only this IP may be used

VM → Start – done.

In short: Clone template → Configure Cloud-Init (login, network, Regenerate Image) → Check hardware (CPU host, VirtIO) → Enable firewall globally and for VM (Input DROP, Output ACCEPT) → Create IP set for access from your IP only → Start VM.

For the Proxmox installation itself, check out our YouTube tutorial. For questions: Open a ticket with MagicHosting.