linvpsliteinit — Lightweight VPS Initialization Toolkit

English · 🇨🇳 中文 · 🇯🇵 日本語

linvpsliteinit is a lightweight, interactive VPS setup toolkit for Debian & Ubuntu.
It ships a one-pass initialization script and a re-runnable components installer.

---

✨ Features at a Glance

• Init once, skip freely: hostname, timezone, UFW, Fail2Ban, SWAP, BBR
• Add later, safely: re-run the components installer any time
• Smart SWAP: sensible defaults; Debian 11 de-dup; Debian 12 untouched
• Secure baseline: deny inbound by default, allow chosen SSH; Fail2Ban enabled
• Global-ready: clear English comments; tested on Debian 11/12 & Ubuntu LTS

---

🚀 Quick Start

Root is required. Review the scripts before executing in production.

# Clone
git clone https://github.com/tonysbb/linvpsliteinit.git
cd linvpsliteinit

# Make executable
chmod +x vps_init_final_ChatGPT.sh add_components_ChatGPT.sh

# Initialize (recommended on a fresh VPS)
sudo ./vps_init_final_ChatGPT.sh

# Add components later as needed
sudo ./add_components_ChatGPT.sh

☝️ One-liner (use with caution)

Read the script first if possible. One-liners are convenient but risky if you don’t audit code.

# Initialization script
curl -fsSL https://raw.githubusercontent.com/tonysbb/linvpsliteinit/main/vps_init_final_ChatGPT.sh | sudo bash

# Components script
curl -fsSL https://raw.githubusercontent.com/tonysbb/linvpsliteinit/main/add_components_ChatGPT.sh | sudo bash

Alternatively (download then run):

curl -fsSLO https://raw.githubusercontent.com/tonysbb/linvpsliteinit/main/vps_init_final_ChatGPT.sh
curl -fsSLO https://raw.githubusercontent.com/tonysbb/linvpsliteinit/main/add_components_ChatGPT.sh
chmod +x *.sh
sudo ./vps_init_final_ChatGPT.sh
sudo ./add_components_ChatGPT.sh

---

🧩 Modules

1) Initialization — vps_init_final_ChatGPT.sh

• Hostname & Timezone (RFC 1123 compliant)
• SWAP: dynamic sizing, deduplication for Debian 11
• UFW: deny inbound, allow outbound
• Fail2Ban: optional security layer
• BBR: enabled if supported

2) Components — add_components_ChatGPT.sh

• Re-runnable menu installer:
  • SWAP reconfiguration
  • Fail2Ban
  • Docker (official repo)
  • Extend as needed

---

🛠️ Compatibility

• Debian 11 (Bullseye), 12 (Bookworm)
• Ubuntu 20.04 / 22.04 / 24.04 LTS

Some VPS images ship with cloud-init which can override hostname/network configs.
Check /etc/cloud/cloud.cfg (preserve_hostname) if changes don’t persist.

---

🔒 Security Notes

• Run as root
• Hostname must comply with RFC 1123
• UFW defaults: deny inbound, allow outbound
• Fail2Ban defends against SSH brute-force

---

📜 License

MIT — see LICENSE