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Merge pull request #123738 from kannon92/fail-limited-swap-cgroup-v1

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[KEP-2400]: Fail limited swap cgroup v1
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Kubernetes Prow Robot 2024-03-05 19:30:34 -08:00 committed by GitHub
commit 546f7c3086
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1 changed files with 3 additions and 1 deletions
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4
cmd/kubelet/app/server.go
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@ -802,9 +802,11 @@ func run(ctx context.Context, s *options.KubeletServer, kubeDeps *kubelet.Depend
}
if utilfeature.DefaultFeatureGate.Enabled(features.NodeSwap) {
if !isCgroup2UnifiedMode() && s.MemorySwap.SwapBehavior == kubelettypes.LimitedSwap {
klog.InfoS("Swap feature is enabled and LimitedSwap but it is only supported with cgroupv2", "CGroupV2", isCgroup2UnifiedMode(), "SwapBehavior", s.MemorySwap.SwapBehavior)
// This feature is not supported for cgroupv1 so we are failing early.
return fmt.Errorf("swap feature is enabled and LimitedSwap but it is only supported with cgroupv2")
}
if !s.FailSwapOn && s.MemorySwap.SwapBehavior == "" {
// This is just a log because we are using a default of NoSwap.
klog.InfoS("NoSwap is set due to memorySwapBehavior not specified", "memorySwapBehavior", s.MemorySwap.SwapBehavior, "FailSwapOn", s.FailSwapOn)
}
}