Centralized Linux authentication with OpenLDAP

LDAP, the #1 way to get your graduation delayed (as has always been the meme around Tsinghua University), is every SysAdmin’s dream tool for their servers. As mighty as its rumors fly, LDAP takes t...

14 minute read

Install Proxmox VE on eMMC

Recently I bought a mini PC looking forward to setting up a home router. It started quite well except the specs were higher than I anticipated. 8 GB RAM plus 128 GB eMMC - too much waste for “just ...

2 minute read

Reinstall Windows VPS into Linux with iPXE network boot

This November I found a discount from one of my favorite VPS providers, NETfront. They offered Linux VPS with 2 vCPUs and 2 GB RAM at HK$56/mo, and also Windows VPS with 4 vCPUs and 4 GB RAM at HK$...

3 minute read

Secure site-to-site connection with Linux IPsec VPN

Linux has a built-in framework for Internet Protocol Security (IPsec), which is often combined with other tunneling technologies (e.g. L2TP and GRE) to create secure cross-site network connections....

15 minute read

Disassembling a hardware RAID 1 array in Proxmox VE

Yesterday in a server maintenance period, we decided to tune the storage layout of our Proxmox VE server, which included disassembling a RAID 1 array and adjusting the size of the root filesystem.

7 minute read

I switched from Google Chrome to Microsoft Edge

Last year (maybe September? I don’t remember now) I switched my primary browser from Google Chrome to the new Microsoft Edge. It turned out to be a wise move and I’ve been with Edge for more than h...

4 minute read

Setting up a GitHub webhook on AWS Lambda

Last month I set up my own Telegram bot for GitHub event notification. To receive GitHub events via webhook, a receiver is needed. True, it isn’t hard to write a Flask or Sinatra server and throw t...

6 minute read