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fix kubelet failed to start on setting hugetlb limits in non-exist cgroup dir

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cause by kubelet startup be interrupted on setting list of cgroups
In the 'cgroupManagerImpl.Exists' not check&recreate the hugetlb cgroup dir. Then setting the limits in non-exist cgroup dir will cause kubelet start failed.

Signed-off-by: bingshen.wbs <bingshen.wbs@alibaba-inc.com>
This commit is contained in:
bingshen.wbs 2019-11-06 16:39:05 +08:00
parent 0c0408c790
commit 47642a0bad
1 changed files with 3 additions and 0 deletions
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3
pkg/kubelet/cm/cgroup_manager_linux.go
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@ -257,6 +257,9 @@ func (m *cgroupManagerImpl) Exists(name CgroupName) bool {
if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.SupportPodPidsLimit) || utilfeature.DefaultFeatureGate.Enabled(kubefeatures.SupportNodePidsLimit) { if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.SupportPodPidsLimit) || utilfeature.DefaultFeatureGate.Enabled(kubefeatures.SupportNodePidsLimit) {
whitelistControllers.Insert("pids") whitelistControllers.Insert("pids")
} }
if _, ok := m.subsystems.MountPoints["hugetlb"]; ok {
whitelistControllers.Insert("hugetlb")
}
var missingPaths []string var missingPaths []string
// If even one cgroup path doesn't exist, then the cgroup doesn't exist. // If even one cgroup path doesn't exist, then the cgroup doesn't exist.
for controller, path := range cgroupPaths { for controller, path := range cgroupPaths {