mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-30 23:15:14 +00:00
set LegacyNodeRoleBehavior to false and mv ServiceNodeExclusion to GA
Signed-off-by: pacoxu <paco.xu@daocloud.io>
This commit is contained in:
pacoxu
parent
0a839c6c3b
commit
441985afb6
@ -12,7 +12,6 @@ go_library(
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"//pkg/controller:go_default_library",
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"//pkg/controller/nodelifecycle/scheduler:go_default_library",
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"//pkg/controller/util/node:go_default_library",
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"//pkg/features:go_default_library",
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"//pkg/kubelet/apis:go_default_library",
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"//pkg/util/node:go_default_library",
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"//pkg/util/taints:go_default_library",
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@ -24,7 +23,6 @@ go_library(
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"//staging/src/k8s.io/apimachinery/pkg/labels:go_default_library",
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"//staging/src/k8s.io/apimachinery/pkg/util/runtime:go_default_library",
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"//staging/src/k8s.io/apimachinery/pkg/util/wait:go_default_library",
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"//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library",
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"//staging/src/k8s.io/client-go/informers/apps/v1:go_default_library",
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"//staging/src/k8s.io/client-go/informers/coordination/v1:go_default_library",
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"//staging/src/k8s.io/client-go/informers/core/v1:go_default_library",
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@ -54,7 +52,6 @@ go_test(
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"//pkg/controller/nodelifecycle/scheduler:go_default_library",
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"//pkg/controller/testutil:go_default_library",
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"//pkg/controller/util/node:go_default_library",
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"//pkg/features:go_default_library",
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"//pkg/kubelet/apis:go_default_library",
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"//pkg/util/node:go_default_library",
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"//pkg/util/taints:go_default_library",
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@ -68,7 +65,6 @@ go_test(
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"//staging/src/k8s.io/apimachinery/pkg/labels:go_default_library",
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"//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library",
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"//staging/src/k8s.io/apimachinery/pkg/util/diff:go_default_library",
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"//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library",
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"//staging/src/k8s.io/client-go/informers:go_default_library",
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"//staging/src/k8s.io/client-go/informers/apps/v1:go_default_library",
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"//staging/src/k8s.io/client-go/informers/coordination/v1:go_default_library",
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@ -76,7 +72,6 @@ go_test(
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"//staging/src/k8s.io/client-go/kubernetes:go_default_library",
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"//staging/src/k8s.io/client-go/kubernetes/fake:go_default_library",
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"//staging/src/k8s.io/client-go/testing:go_default_library",
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"//staging/src/k8s.io/component-base/featuregate/testing:go_default_library",
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"//vendor/k8s.io/utils/pointer:go_default_library",
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],
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)
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@ -24,7 +24,6 @@ package nodelifecycle
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import (
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"context"
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"fmt"
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"strings"
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"sync"
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"time"
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@ -38,7 +37,6 @@ import (
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"k8s.io/apimachinery/pkg/labels"
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utilruntime "k8s.io/apimachinery/pkg/util/runtime"
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"k8s.io/apimachinery/pkg/util/wait"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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appsv1informers "k8s.io/client-go/informers/apps/v1"
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coordinformers "k8s.io/client-go/informers/coordination/v1"
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coreinformers "k8s.io/client-go/informers/core/v1"
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@ -56,7 +54,6 @@ import (
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"k8s.io/kubernetes/pkg/controller"
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"k8s.io/kubernetes/pkg/controller/nodelifecycle/scheduler"
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nodeutil "k8s.io/kubernetes/pkg/controller/util/node"
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kubefeatures "k8s.io/kubernetes/pkg/features"
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kubeletapis "k8s.io/kubernetes/pkg/kubelet/apis"
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utilnode "k8s.io/kubernetes/pkg/util/node"
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taintutils "k8s.io/kubernetes/pkg/util/taints"
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@ -949,37 +946,9 @@ func (nc *Controller) processNoTaintBaseEviction(node *v1.Node, observedReadyCon
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const labelNodeDisruptionExclusion = "node.kubernetes.io/exclude-disruption"
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func isNodeExcludedFromDisruptionChecks(node *v1.Node) bool {
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// DEPRECATED: will be removed in 1.19
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if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.LegacyNodeRoleBehavior) {
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if legacyIsMasterNode(node.Name) {
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return true
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}
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}
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if utilfeature.DefaultFeatureGate.Enabled(kubefeatures.NodeDisruptionExclusion) {
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if _, ok := node.Labels[labelNodeDisruptionExclusion]; ok {
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return true
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}
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}
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return false
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}
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// legacyIsMasterNode returns true if given node is a registered master according
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// to the logic historically used for this function. This code path is deprecated
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// and the node disruption exclusion label should be used in the future.
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// This code will not be allowed to update to use the node-role label, since
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// node-roles may not be used for feature enablement.
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// DEPRECATED: Will be removed in 1.19
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func legacyIsMasterNode(nodeName string) bool {
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// We are trying to capture "master(-...)?$" regexp.
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// However, using regexp.MatchString() results even in more than 35%
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// of all space allocations in ControllerManager spent in this function.
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// That's why we are trying to be a bit smarter.
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if strings.HasSuffix(nodeName, "master") {
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if _, ok := node.Labels[labelNodeDisruptionExclusion]; ok {
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return true
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}
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if len(nodeName) >= 10 {
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return strings.HasSuffix(nodeName[:len(nodeName)-3], "master-")
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}
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return false
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}
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@ -33,7 +33,6 @@ import (
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/diff"
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utilfeature "k8s.io/apiserver/pkg/util/feature"
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"k8s.io/client-go/informers"
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appsinformers "k8s.io/client-go/informers/apps/v1"
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coordinformers "k8s.io/client-go/informers/coordination/v1"
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@ -41,12 +40,10 @@ import (
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/client-go/kubernetes/fake"
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testcore "k8s.io/client-go/testing"
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featuregatetesting "k8s.io/component-base/featuregate/testing"
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"k8s.io/kubernetes/pkg/controller"
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"k8s.io/kubernetes/pkg/controller/nodelifecycle/scheduler"
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"k8s.io/kubernetes/pkg/controller/testutil"
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nodeutil "k8s.io/kubernetes/pkg/controller/util/node"
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"k8s.io/kubernetes/pkg/features"
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kubeletapis "k8s.io/kubernetes/pkg/kubelet/apis"
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"k8s.io/kubernetes/pkg/util/node"
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taintutils "k8s.io/kubernetes/pkg/util/taints"
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@ -1140,7 +1137,8 @@ func TestMonitorNodeHealthEvictPodsWithDisruption(t *testing.T) {
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description: "Network Disruption: One zone is down - eviction should take place.",
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},
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// NetworkDisruption: Node created long time ago, node controller posted Unknown for a long period
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// of on first Node, eviction should stop even though -master Node is healthy.
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// of on first Node, eviction should stop even though Node with label
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// node.kubernetes.io/exclude-disruption is healthy.
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{
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nodeList: []*v1.Node{
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{
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@ -1174,6 +1172,7 @@ func TestMonitorNodeHealthEvictPodsWithDisruption(t *testing.T) {
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v1.LabelTopologyZone: "zone1",
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v1.LabelFailureDomainBetaRegion: "region1",
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v1.LabelFailureDomainBetaZone: "zone1",
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labelNodeDisruptionExclusion: "",
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},
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},
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Status: v1.NodeStatus{
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@ -1200,7 +1199,7 @@ func TestMonitorNodeHealthEvictPodsWithDisruption(t *testing.T) {
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testutil.CreateZoneID("region1", "zone1"): stateFullDisruption,
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},
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expectedEvictPods: false,
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description: "NetworkDisruption: eviction should stop, only -master Node is healthy",
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description: "NetworkDisruption: eviction should stop, only Node with label node.kubernetes.io/exclude-disruption is healthy",
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},
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// NetworkDisruption: Node created long time ago, node controller posted Unknown for a long period of time on both Nodes.
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// Initially both zones down, one comes back - eviction should take place
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@ -3577,26 +3576,15 @@ func Test_isNodeExcludedFromDisruptionChecks(t *testing.T) {
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tests := []struct {
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name string
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enableExclusion bool
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enableLegacy bool
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input *v1.Node
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want bool
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input *v1.Node
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want bool
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}{
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{want: false, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{}}}},
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{want: false, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Name: "master-abc"}}},
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{want: false, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{labelNodeDisruptionExclusion: ""}}}},
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{want: false, enableExclusion: true, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Name: "master-abc"}}},
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{want: false, enableLegacy: true, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{labelNodeDisruptionExclusion: ""}}}},
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{want: true, enableLegacy: true, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Name: "master-abc"}}},
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{want: true, enableExclusion: true, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{labelNodeDisruptionExclusion: ""}}}},
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{want: true, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{labelNodeDisruptionExclusion: ""}}}},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.NodeDisruptionExclusion, tt.enableExclusion)()
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defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.LegacyNodeRoleBehavior, tt.enableLegacy)()
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if result := isNodeExcludedFromDisruptionChecks(tt.input); result != tt.want {
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t.Errorf("isNodeExcludedFromDisruptionChecks() = %v, want %v", result, tt.want)
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}
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@ -140,13 +140,16 @@ const (
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// owner @smarterclayton
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// alpha: v1.16
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// beta: v1.19
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// ga: v1.21
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//
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// Enable legacy behavior to vary cluster functionality on the node-role.kubernetes.io labels. On by default (legacy), will be turned off in 1.18.
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// Lock to false in v1.21 and remove in v1.22.
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LegacyNodeRoleBehavior featuregate.Feature = "LegacyNodeRoleBehavior"
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// owner @brendandburns
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// alpha: v1.9
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// beta: v1.19
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// ga: v1.21
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//
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// Enable nodes to exclude themselves from service load balancers
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ServiceNodeExclusion featuregate.Feature = "ServiceNodeExclusion"
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@ -154,6 +157,7 @@ const (
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// owner @smarterclayton
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// alpha: v1.16
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// beta: v1.19
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// ga: v1.21
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//
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// Enable nodes to exclude themselves from network disruption checks
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NodeDisruptionExclusion featuregate.Feature = "NodeDisruptionExclusion"
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@ -753,8 +757,8 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
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CPUManager: {Default: true, PreRelease: featuregate.Beta},
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CPUCFSQuotaPeriod: {Default: false, PreRelease: featuregate.Alpha},
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TopologyManager: {Default: true, PreRelease: featuregate.Beta},
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ServiceNodeExclusion: {Default: true, PreRelease: featuregate.Beta},
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NodeDisruptionExclusion: {Default: true, PreRelease: featuregate.Beta},
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ServiceNodeExclusion: {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.22
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NodeDisruptionExclusion: {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.22
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CSIDriverRegistry: {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.20
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CSINodeInfo: {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.19
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BlockVolume: {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.20
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@ -851,5 +855,5 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
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// features that enable backwards compatibility but are scheduled to be removed
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// ...
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HPAScaleToZero: {Default: false, PreRelease: featuregate.Alpha},
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LegacyNodeRoleBehavior: {Default: true, PreRelease: featuregate.Beta},
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LegacyNodeRoleBehavior: {Default: false, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.22
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}
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@ -56,28 +56,12 @@ const (
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minRetryDelay = 5 * time.Second
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maxRetryDelay = 300 * time.Second
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// labelNodeRoleMaster specifies that a node is a master. The use of this label within the
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// controller is deprecated and only considered when the LegacyNodeRoleBehavior feature gate
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// is on.
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labelNodeRoleMaster = "node-role.kubernetes.io/master"
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// labelNodeRoleExcludeBalancer specifies that the node should not be considered as a target
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// for external load-balancers which use nodes as a second hop (e.g. many cloud LBs which only
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// understand nodes). For services that use externalTrafficPolicy=Local, this may mean that
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// any backends on excluded nodes are not reachable by those external load-balancers.
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// Implementations of this exclusion may vary based on provider. This label is honored starting
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// in 1.16 when the ServiceNodeExclusion gate is on.
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// Implementations of this exclusion may vary based on provider.
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labelNodeRoleExcludeBalancer = "node.kubernetes.io/exclude-from-external-load-balancers"
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// serviceNodeExclusionFeature is the feature gate name that
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// enables nodes to exclude themselves from service load balancers
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// originated from: https://github.com/kubernetes/kubernetes/blob/28e800245e/pkg/features/kube_features.go#L178
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serviceNodeExclusionFeature = "ServiceNodeExclusion"
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// legacyNodeRoleBehaviorFeature is the feature gate name that enables legacy
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// behavior to vary cluster functionality on the node-role.kubernetes.io
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// labels.
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legacyNodeRoleBehaviorFeature = "LegacyNodeRoleBehavior"
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)
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type cachedService struct {
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@ -110,9 +94,6 @@ type Controller struct {
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nodeListerSynced cache.InformerSynced
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// services that need to be synced
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queue workqueue.RateLimitingInterface
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// feature gates stored in local field for better testability
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legacyNodeRoleFeatureEnabled bool
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serviceNodeExclusionFeatureEnabled bool
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}
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// New returns a new service controller to keep cloud provider service resources
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@ -137,18 +118,16 @@ func New(
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}
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s := &Controller{
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cloud: cloud,
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knownHosts: []*v1.Node{},
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kubeClient: kubeClient,
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clusterName: clusterName,
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cache: &serviceCache{serviceMap: make(map[string]*cachedService)},
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eventBroadcaster: broadcaster,
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eventRecorder: recorder,
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nodeLister: nodeInformer.Lister(),
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nodeListerSynced: nodeInformer.Informer().HasSynced,
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queue: workqueue.NewNamedRateLimitingQueue(workqueue.NewItemExponentialFailureRateLimiter(minRetryDelay, maxRetryDelay), "service"),
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legacyNodeRoleFeatureEnabled: featureGate.Enabled(legacyNodeRoleBehaviorFeature),
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serviceNodeExclusionFeatureEnabled: featureGate.Enabled(serviceNodeExclusionFeature),
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cloud: cloud,
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knownHosts: []*v1.Node{},
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kubeClient: kubeClient,
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clusterName: clusterName,
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cache: &serviceCache{serviceMap: make(map[string]*cachedService)},
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eventBroadcaster: broadcaster,
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eventRecorder: recorder,
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nodeLister: nodeInformer.Lister(),
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nodeListerSynced: nodeInformer.Informer().HasSynced,
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queue: workqueue.NewNamedRateLimitingQueue(workqueue.NewItemExponentialFailureRateLimiter(minRetryDelay, maxRetryDelay), "service"),
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}
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serviceInformer.Informer().AddEventHandlerWithResyncPeriod(
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@ -635,17 +614,8 @@ func nodeSlicesEqualForLB(x, y []*v1.Node) bool {
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func (s *Controller) getNodeConditionPredicate() NodeConditionPredicate {
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return func(node *v1.Node) bool {
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if s.legacyNodeRoleFeatureEnabled {
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// As of 1.6, we will taint the master, but not necessarily mark it unschedulable.
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// Recognize nodes labeled as master, and filter them also, as we were doing previously.
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if _, hasMasterRoleLabel := node.Labels[labelNodeRoleMaster]; hasMasterRoleLabel {
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return false
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}
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}
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if s.serviceNodeExclusionFeatureEnabled {
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if _, hasExcludeBalancerLabel := node.Labels[labelNodeRoleExcludeBalancer]; hasExcludeBalancerLabel {
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return false
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}
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if _, hasExcludeBalancerLabel := node.Labels[labelNodeRoleExcludeBalancer]; hasExcludeBalancerLabel {
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return false
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}
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// If we have no info, don't accept
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@ -1373,10 +1373,8 @@ func Test_getNodeConditionPredicate(t *testing.T) {
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tests := []struct {
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name string
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enableExclusion bool
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enableLegacy bool
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input *v1.Node
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want bool
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input *v1.Node
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want bool
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}{
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{want: false, input: &v1.Node{}},
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{want: true, input: &v1.Node{Status: v1.NodeStatus{Conditions: []v1.NodeCondition{{Type: v1.NodeReady, Status: v1.ConditionTrue}}}}},
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@ -1384,21 +1382,11 @@ func Test_getNodeConditionPredicate(t *testing.T) {
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{want: true, input: &v1.Node{Spec: v1.NodeSpec{Unschedulable: true}, Status: v1.NodeStatus{Conditions: []v1.NodeCondition{{Type: v1.NodeReady, Status: v1.ConditionTrue}}}}},
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{want: true, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{}}}},
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{want: true, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{labelNodeRoleMaster: ""}}}},
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{want: true, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{labelNodeRoleExcludeBalancer: ""}}}},
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{want: true, enableExclusion: true, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{labelNodeRoleMaster: ""}}}},
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{want: true, enableLegacy: true, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{labelNodeRoleExcludeBalancer: ""}}}},
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{want: false, enableLegacy: true, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{labelNodeRoleMaster: ""}}}},
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{want: false, enableExclusion: true, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{labelNodeRoleExcludeBalancer: ""}}}},
|
||||
{want: false, input: &v1.Node{Status: validNodeStatus, ObjectMeta: metav1.ObjectMeta{Labels: map[string]string{labelNodeRoleExcludeBalancer: ""}}}},
|
||||
}
|
||||
for _, tt := range tests {
|
||||
t.Run(tt.name, func(t *testing.T) {
|
||||
c := &Controller{
|
||||
legacyNodeRoleFeatureEnabled: tt.enableLegacy,
|
||||
serviceNodeExclusionFeatureEnabled: tt.enableExclusion,
|
||||
}
|
||||
c := &Controller{}
|
||||
|
||||
if result := c.getNodeConditionPredicate()(tt.input); result != tt.want {
|
||||
t.Errorf("getNodeConditionPredicate() = %v, want %v", result, tt.want)
|
||||
|
||||
@ -38,6 +38,7 @@ const (
|
||||
// owner @brendandburns
|
||||
// alpha: v1.9
|
||||
// beta: v1.19
|
||||
// ga: v1.21
|
||||
//
|
||||
// Enable nodes to exclude themselves from service load balancers
|
||||
// Original copy from k8s.io/kubernetes/pkg/features/kube_features.go
|
||||
@ -58,7 +59,7 @@ func SetupCurrentKubernetesSpecificFeatureGates(featuregates featuregate.Mutable
|
||||
// cloudPublicFeatureGates consists of cloud-specific feature keys.
|
||||
// To add a new feature, define a key for it at k8s.io/api/pkg/features and add it here.
|
||||
var cloudPublicFeatureGates = map[featuregate.Feature]featuregate.FeatureSpec{
|
||||
LegacyNodeRoleBehavior: {Default: true, PreRelease: featuregate.Beta},
|
||||
ServiceNodeExclusion: {Default: true, PreRelease: featuregate.Beta},
|
||||
LegacyNodeRoleBehavior: {Default: false, PreRelease: featuregate.GA, LockToDefault: true},
|
||||
ServiceNodeExclusion: {Default: true, PreRelease: featuregate.GA, LockToDefault: true},
|
||||
IPv6DualStack: {Default: false, PreRelease: featuregate.Alpha},
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user