Turning an Old Gaming Laptop into a Home Lab

说明与用途

Dell G7 笔记本被改造成可靠的家庭实验室：安装 Proxmox VE，配置分区和存储池，创建了一个 SSH 加固的 LXC 容器，并演示了快速快照恢复。

问题

Need a low‑cost, reliable platform to experiment with cloud infra, offensive security, and local AI models without over‑provisioning.

结果

A single laptop serves as a resilient, low‑power home lab with separate storage, container isolation, and verified snapshot recovery, enabling safe experimentation across three learning tracks.

工作流

• 1. Ran Memtest86+ for 7 passes on laptop RAM
• 2. Installed Proxmox VE 9.2, chose ext4, set root to 128 GB
• 3. Fixed Proxmox repos to pve‑no‑subscription
• 4. Created systemd config to ignore lid switch
• 5. Configured two storage pools: NVMe for guest disks, HDD for ISOs/backups
• 6. Created unprivileged LXC container svc‑01 with Debian 13
• 7. Hardened SSH: added key, disabled password/root logins, added user to sudo
• 8. Took snapshot clean‑base
• 9. Broke SSH by uninstalling OpenSSH and deleting /etc/ssh
• 10. Verified lockout
• 11. Restored snapshot
• 12. Reconnected via SSH without host key warning

证据

I went with Proxmox VE 9.2, installed straight onto the laptop. Windows is gone.

来源

I set the root size to 128 GB so the rest goes to the pool where guest disks live.

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I created a regular user, set up an SSH key just for the lab, and turned off password logins and root logins.

来源

I took a snapshot called clean‑base. I made sure to take it after fixing sudo, because a snapshot saves things exactly as they are.

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