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I've never seen Kubernetes crash. I don't have that much experience with operating k8s clusters, but on those I've seen it just kept on working.
by andix 2y ago
I've never seen Kubernetes crash. I don't have that much experience with operating k8s clusters, but on those I've seen it just kept on working.
- whalesalad 2y agoSame. Pods will crash, run out of memory, fail to get scheduled, etc... but I have never seen kube itself crash.
- q3k 2y agoI've been experimenting with k8s and/or running it on prod basically since the initial release, and I've so far only had one workload-affecting bug. The bug caused the scheduler to get stuck meaning pods assigned to nodes kept running, but no new pods would be scheduled. https://github.com/kubernetes/kubernetes/issues/124930 https://github.com/kubernetes/kubernetes/issues/124930 That's a pretty good track record, and indicates a level of fail-safe design (everything continued working, even though a critical components kept crashinglooping).
- kesor 2y agoYou obviously have not operated kubernetes long enough. With large enough scale you'll find the cluster controllers crashing for various reasons, getting out of sync with each other, etcd crashing or getting locked, and a whole bag of bugs.