Top-of-rack switch reboot, rack SIN-A04
网络——转接与对等互联——SIN
时间线
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已解决
Rack A04 has been stable since 12:16 UTC. Duration: 8 minutes. Running workloads were not interrupted; only reachability was lost. Affected machines receive the SLA extension automatically.
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已确定原因
The switch has reloaded and its uplinks are up. It rebooted on a software watchdog; we have the crash file and will send it to the vendor.
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调查中
The top-of-rack switch in rack A04 of SIN rebooted unexpectedly at 12:08 UTC. The 7 machines in that rack are unreachable while it comes back up.
事故复盘 ·
发生了什么，改变了什么
原因
The top-of-rack switch in SIN-A04 hit a memory leak in its control-plane process that the vendor has since fixed; the watchdog reloaded the switch when the process stopped responding.
影响
7 machines were unreachable for 8 minutes. GPU workloads continued to run and no data was lost.
我们改变了什么
- The fixed switch firmware was rolled out to every rack in the fleet during the following maintenance windows.
- The watchdog now reports a warning at 80% memory use instead of only reloading at 100%, giving us time to move the rack to its backup path first.
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