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Commit 36bccb5d authored by Darren Shepherd's avatar Darren Shepherd Committed by Erik Wilson
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Alleviate race between scheduler and kubelet

If the scheduler learns of a node change and schedules based on it before the kubelet learns of the node change, the pod will fail.
parent 202115d9
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pkg/kubelet/lifecycle/predicate.go
View file @ 36bccb5d
...@@ -18,6 +18,7 @@ package lifecycle ...@@ -18,6 +18,7 @@ package lifecycle
import ( import (
"fmt" "fmt"
"time"
"k8s.io/klog" "k8s.io/klog"
...@@ -55,6 +56,19 @@ func NewPredicateAdmitHandler(getNodeAnyWayFunc getNodeAnyWayFuncType, admission ...@@ -55,6 +56,19 @@ func NewPredicateAdmitHandler(getNodeAnyWayFunc getNodeAnyWayFuncType, admission
} }
func (w *predicateAdmitHandler) Admit(attrs *PodAdmitAttributes) PodAdmitResult { func (w *predicateAdmitHandler) Admit(attrs *PodAdmitAttributes) PodAdmitResult {
result := w.admit(attrs)
for i := 0; i < 10; i++ {
if result.Admit {
break
}
time.Sleep(time.Second)
result = w.admit(attrs)
}
return result
}
func (w *predicateAdmitHandler) admit(attrs *PodAdmitAttributes) PodAdmitResult {
node, err := w.getNodeAnyWayFunc() node, err := w.getNodeAnyWayFunc()
if err != nil { if err != nil {
klog.Errorf("Cannot get Node info: %v", err) klog.Errorf("Cannot get Node info: %v", err)
......
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