proxmox-ipset-auto-dns

Automatically update Proxmox VE firewall IP sets based on domain names in comments.

The script detects IP sets with comments like auto_dns_example.com_github.com, resolves their IPs via DNS, and updates the firewall accordingly — cluster-wide, node, VM, and container levels supported.

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✨ Features

• 🧠 Detects IP sets with comments starting with auto_dns_
• 🌐 Resolves both IPv4 (A) and IPv6 (AAAA) records
• 🔁 Clears old IPs and replaces them with current DNS results
• ⚙️ Works at:
  • Cluster level
  • Node level
  • QEMU (VM) level
  • LXC (CT) level
• 🪶 Lightweight — uses only bash, jq, and dig
• 🔍 Optional debug mode for verbose command logging

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⚙️ How to use

1. Create an IPset (for Cluster, VM, or LXC) with any name, and set its comment to: auto_dns_domain-1.com_example.com_google.com
2. Wait for the script to automatically populate the IP addresses in the list, or run it manually: /usr/local/bin/proxmox-ipset-auto-dns.sh

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📦 Requirements

Install dependencies:

apt update
apt install -y jq dnsutils

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🛠️ Installation as a systemd service

Run the installer script (parameter = update interval, e.g. 6h, 30m, 3600s):

curl -fsSL "https://raw.githubusercontent.com/vgdh/proxmox-ipset-auto-dns/refs/heads/main/install.sh" | bash -s -- 30m

wget -qO- "https://raw.githubusercontent.com/vgdh/proxmox-ipset-auto-dns/refs/heads/main/install.sh" | bash -s -- 30m