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Make Daemons tolerate NoExecute taints correctly

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This commit is contained in:
gmarek
2017-05-04 15:19:08 +02:00
parent 9afeabb642
commit f371c14314
3 changed files with 33 additions and 5 deletions
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14
pkg/api/v1/helper/helpers.go
View File

@@ -203,10 +203,10 @@ func NodeSelectorRequirementsAsSelector(nsm []v1.NodeSelectorRequirement) (label
return selector, nil
}
// AddOrUpdateTolerationInPod tries to add a toleration to the pod's toleration list.
// AddOrUpdateTolerationInPodSpec tries to add a toleration to the toleration list in PodSpec.
// Returns true if something was updated, false otherwise.
func AddOrUpdateTolerationInPod(pod *v1.Pod, toleration *v1.Toleration) bool {
podTolerations := pod.Spec.Tolerations
func AddOrUpdateTolerationInPodSpec(spec *v1.PodSpec, toleration *v1.Toleration) bool {
podTolerations := spec.Tolerations
var newTolerations []v1.Toleration
updated := false
@@ -227,10 +227,16 @@ func AddOrUpdateTolerationInPod(pod *v1.Pod, toleration *v1.Toleration) bool {
newTolerations = append(newTolerations, *toleration)
}
pod.Spec.Tolerations = newTolerations
spec.Tolerations = newTolerations
return true
}
// AddOrUpdateTolerationInPod tries to add a toleration to the pod's toleration list.
// Returns true if something was updated, false otherwise.
func AddOrUpdateTolerationInPod(pod *v1.Pod, toleration *v1.Toleration) bool {
return AddOrUpdateTolerationInPodSpec(&pod.Spec, toleration)
}
// TolerationsTolerateTaint checks if taint is tolerated by any of the tolerations.
func TolerationsTolerateTaint(tolerations []v1.Toleration, taint *v1.Taint) bool {
for i := range tolerations {

1
pkg/controller/daemon/util/BUILD
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@@ -15,6 +15,7 @@ go_library(
deps = [
"//pkg/api:go_default_library",
"//pkg/api/v1:go_default_library",
"//pkg/api/v1/helper:go_default_library",
"//pkg/api/v1/pod:go_default_library",
"//pkg/apis/extensions/v1beta1:go_default_library",
"//pkg/util/labels:go_default_library",

23
pkg/controller/daemon/util/daemonset_util.go
View File

@@ -22,16 +22,37 @@ import (
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/v1"
v1helper "k8s.io/kubernetes/pkg/api/v1/helper"
podutil "k8s.io/kubernetes/pkg/api/v1/pod"
extensions "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
labelsutil "k8s.io/kubernetes/pkg/util/labels"
)
// GetPodTemplateWithHash returns copy of provided template with additional
// label which contains hash of provided template
// label which contains hash of provided template and sets default daemon tolerations.
func GetPodTemplateWithGeneration(template v1.PodTemplateSpec, generation int64) v1.PodTemplateSpec {
obj, _ := api.Scheme.DeepCopy(template)
newTemplate := obj.(v1.PodTemplateSpec)
// DaemonSet pods shouldn't be deleted by NodeController in case of node problems.
// Add infinite toleration for taint notReady:NoExecute here
// to survive taint-based eviction enforced by NodeController
// when node turns not ready.
v1helper.AddOrUpdateTolerationInPodSpec(&newTemplate.Spec, &v1.Toleration{
Key: metav1.TaintNodeNotReady,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
})
// DaemonSet pods shouldn't be deleted by NodeController in case of node problems.
// Add infinite toleration for taint unreachable:NoExecute here
// to survive taint-based eviction enforced by NodeController
// when node turns unreachable.
v1helper.AddOrUpdateTolerationInPodSpec(&newTemplate.Spec, &v1.Toleration{
Key: metav1.TaintNodeUnreachable,
Operator: v1.TolerationOpExists,
Effect: v1.TaintEffectNoExecute,
})
templateGenerationStr := fmt.Sprint(generation)
newTemplate.ObjectMeta.Labels = labelsutil.CloneAndAddLabel(
template.ObjectMeta.Labels,