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This seems like amazing technology, but I'm having a hard time seeing the use case for it. If you are sensitive to a single machine going down for a reboot, th
by ahupp 12y ago
This seems like amazing technology, but I'm having a hard time seeing the use case for it. If you are sensitive to a single machine going down for a reboot, the occasional kernel upgrade is the least of your concerns. Those are at least predictable and rare. I'm sure there are environments where (say) the time to failover to a replica is business-critical, but what are they?
- ryan-c 12y agoFull disk encryption or other situations where manual intervention is a hard requirement to get the system fully back online is one situation. Any instance where you're running untrusted binaries on your server you'd want to update ASAP and not worry about getting pwned while waiting for scheduled downtime. Before Oracle closed it to new customers, Ksplice was fairly cheap, ~$3-4/mo/server.
- Intermernet 12y agoMost SME's usually don't have redundant everything (unlike large enterprises, and IT specific companies) in their environments. They will usually do a cost / benefit analysis and choose to skimp on certain redundancies (usually somewhat "stateless" stuff like routers, VPN endpoints and other network gear). These companies are always hindered by the downtime incurred when one of these non-redundant devices needs restarting. In a couple of previous positions over the years I would have loved the ability to apply patches with no downtime. There are environments where the time to failover to redundant infrastructure is critical (HVT, particle physics etc.) but the more common use case is probably going to be the companies that have no failover capability for certain parts of their infrastructure.