CloudFlare 在为期约两天的故障后恢复正常运行状态
省流助手：
Cloudflare 三个核心机房之一的 PDX-04 机房由于电路故障下线。
在 PDX-04 机房中，其中一家电力公司断电，机房电力由其他线路和发电机同时供电。
随后由于变压器出现接地故障跳闸，机房的供电被切断，服务器由 UPS 供电。
跳闸导致门禁系统失效，维修人员无法进入机房，随后 UPS 电池耗尽，整个数据中心停电。
由于部分核心服务只在 PDX-04 机房上运行，从而导致 Cloudflare 多个服务出现故障。
官方 Blog：
https://blog.cloudflare.com/post-mortem-on-cloudflare-control-plane-and-analytics-outage/
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