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When someone gets notified by their monitoring system that a server was unavailable (because it rebooted) they might investigate and see that the IPMI logs don'
by LIV2 7y ago
When someone gets notified by their monitoring system that a server was unavailable (because it rebooted) they might investigate and see that the IPMI logs don't mention power loss
Power failure would require both of the power feeds in the DC failing simultaneously and would be easily verified by contacting the DC and asking if they had any power outages reported at the time. Of course there are cheapskates who don't go for redundant power supplies so it's possible but would be indicated in the IPMI logs
- iscoelho 7y agoServers can reboot for any reason. There are tons of kernel issues, especially since Meltdown & Spectre, that cause machine reboots in Linux especially on high traffic machines. I've worked in production environments with thousands of machines and random reboots are a completely normal event for some workloads. Combination of hardware issues & kernel issues with hundreds of thousands of lines of code makes it inevitable. I would be surprised if NordVPN even noticed and their architecture wasn't designed to automatically start everything at boot. You can't be perfect at scale - you just need to design your work loads to be redundant and fault tolerant.