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Make Daemons tolerate NoExecute taints correctly

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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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23
pkg/controller/daemon/util/daemonset_util.go
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@@ -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,