Blog

• Your cert renewed. Did every node get it? (October 2026): why shorter certificate lifetimes turn "one node didn't reload" into a regular incident, why single-address checks miss it, and how certfan checks every address, with real CLI output, cron, Prometheus and CI setups.
• 证书续期了，每台节点都换上了吗？（2026 年 10 月）：中文版，讲痛点、原理、真实命令输出，以及 cron / Prometheus / CI 接入方式。