mirror of https://github.com/k3s-io/k3s
255 lines
8.9 KiB
Go
255 lines
8.9 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package daemon
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import (
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"testing"
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"k8s.io/apimachinery/pkg/util/intstr"
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"k8s.io/kubernetes/pkg/api/v1"
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extensions "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
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)
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func TestDaemonSetUpdatesPods(t *testing.T) {
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ds := newDaemonSet("foo")
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manager, podControl, _ := newTestController(ds)
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maxUnavailable := 2
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addNodes(manager.nodeStore, 0, 5, nil)
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manager.dsStore.Add(ds)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 5, 0)
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markPodsReady(podControl.podStore)
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ds.Spec.Template.Spec.Containers[0].Image = "foo2/bar2"
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ds.Spec.UpdateStrategy.Type = extensions.RollingUpdateDaemonSetStrategyType
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intStr := intstr.FromInt(maxUnavailable)
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ds.Spec.UpdateStrategy.RollingUpdate = &extensions.RollingUpdateDaemonSet{MaxUnavailable: &intStr}
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ds.Spec.TemplateGeneration++
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manager.dsStore.Update(ds)
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 0, maxUnavailable)
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, maxUnavailable, 0)
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markPodsReady(podControl.podStore)
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 0, maxUnavailable)
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, maxUnavailable, 0)
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markPodsReady(podControl.podStore)
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 0, 1)
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 1, 0)
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markPodsReady(podControl.podStore)
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 0, 0)
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clearExpectations(t, manager, ds, podControl)
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}
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func TestDaemonSetUpdatesWhenNewPosIsNotReady(t *testing.T) {
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ds := newDaemonSet("foo")
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manager, podControl, _ := newTestController(ds)
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maxUnavailable := 3
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addNodes(manager.nodeStore, 0, 5, nil)
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manager.dsStore.Add(ds)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 5, 0)
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markPodsReady(podControl.podStore)
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ds.Spec.Template.Spec.Containers[0].Image = "foo2/bar2"
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ds.Spec.UpdateStrategy.Type = extensions.RollingUpdateDaemonSetStrategyType
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intStr := intstr.FromInt(maxUnavailable)
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ds.Spec.UpdateStrategy.RollingUpdate = &extensions.RollingUpdateDaemonSet{MaxUnavailable: &intStr}
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ds.Spec.TemplateGeneration++
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manager.dsStore.Update(ds)
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// new pods are not ready numUnavailable == maxUnavailable
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 0, maxUnavailable)
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, maxUnavailable, 0)
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 0, 0)
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clearExpectations(t, manager, ds, podControl)
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}
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func TestDaemonSetUpdatesAllOldPodsNotReady(t *testing.T) {
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ds := newDaemonSet("foo")
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manager, podControl, _ := newTestController(ds)
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maxUnavailable := 3
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addNodes(manager.nodeStore, 0, 5, nil)
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manager.dsStore.Add(ds)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 5, 0)
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ds.Spec.Template.Spec.Containers[0].Image = "foo2/bar2"
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ds.Spec.UpdateStrategy.Type = extensions.RollingUpdateDaemonSetStrategyType
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intStr := intstr.FromInt(maxUnavailable)
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ds.Spec.UpdateStrategy.RollingUpdate = &extensions.RollingUpdateDaemonSet{MaxUnavailable: &intStr}
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ds.Spec.TemplateGeneration++
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manager.dsStore.Update(ds)
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// all old pods are unavailable so should be removed
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 0, 5)
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 5, 0)
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 0, 0)
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clearExpectations(t, manager, ds, podControl)
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}
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func TestDaemonSetUpdatesNoTemplateChanged(t *testing.T) {
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ds := newDaemonSet("foo")
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manager, podControl, _ := newTestController(ds)
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maxUnavailable := 3
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addNodes(manager.nodeStore, 0, 5, nil)
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manager.dsStore.Add(ds)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 5, 0)
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ds.Spec.UpdateStrategy.Type = extensions.RollingUpdateDaemonSetStrategyType
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intStr := intstr.FromInt(maxUnavailable)
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ds.Spec.UpdateStrategy.RollingUpdate = &extensions.RollingUpdateDaemonSet{MaxUnavailable: &intStr}
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manager.dsStore.Update(ds)
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// template is not changed no pod should be removed
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clearExpectations(t, manager, ds, podControl)
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syncAndValidateDaemonSets(t, manager, ds, podControl, 0, 0)
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clearExpectations(t, manager, ds, podControl)
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}
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func TestGetUnavailableNumbers(t *testing.T) {
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cases := []struct {
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name string
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Manager *daemonSetsController
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ds *extensions.DaemonSet
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nodeToPods map[string][]*v1.Pod
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maxUnavailable int
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numUnavailable int
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Err error
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}{
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{
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name: "No nodes",
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Manager: func() *daemonSetsController {
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manager, _, _ := newTestController()
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return manager
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}(),
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ds: func() *extensions.DaemonSet {
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ds := newDaemonSet("x")
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intStr := intstr.FromInt(0)
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ds.Spec.UpdateStrategy.RollingUpdate = &extensions.RollingUpdateDaemonSet{MaxUnavailable: &intStr}
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return ds
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}(),
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nodeToPods: make(map[string][]*v1.Pod),
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maxUnavailable: 0,
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numUnavailable: 0,
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},
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{
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name: "Two nodes with ready pods",
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Manager: func() *daemonSetsController {
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manager, _, _ := newTestController()
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addNodes(manager.nodeStore, 0, 2, nil)
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return manager
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}(),
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ds: func() *extensions.DaemonSet {
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ds := newDaemonSet("x")
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intStr := intstr.FromInt(1)
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ds.Spec.UpdateStrategy.RollingUpdate = &extensions.RollingUpdateDaemonSet{MaxUnavailable: &intStr}
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return ds
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}(),
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nodeToPods: func() map[string][]*v1.Pod {
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mapping := make(map[string][]*v1.Pod)
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pod0 := newPod("pod-0", "node-0", simpleDaemonSetLabel, nil)
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pod1 := newPod("pod-1", "node-1", simpleDaemonSetLabel, nil)
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markPodReady(pod0)
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markPodReady(pod1)
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mapping["node-0"] = []*v1.Pod{pod0}
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mapping["node-1"] = []*v1.Pod{pod1}
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return mapping
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}(),
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maxUnavailable: 1,
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numUnavailable: 0,
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},
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{
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name: "Two nodes, one node without pods",
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Manager: func() *daemonSetsController {
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manager, _, _ := newTestController()
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addNodes(manager.nodeStore, 0, 2, nil)
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return manager
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}(),
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ds: func() *extensions.DaemonSet {
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ds := newDaemonSet("x")
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intStr := intstr.FromInt(0)
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ds.Spec.UpdateStrategy.RollingUpdate = &extensions.RollingUpdateDaemonSet{MaxUnavailable: &intStr}
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return ds
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}(),
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nodeToPods: func() map[string][]*v1.Pod {
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mapping := make(map[string][]*v1.Pod)
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pod0 := newPod("pod-0", "node-0", simpleDaemonSetLabel, nil)
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markPodReady(pod0)
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mapping["node-0"] = []*v1.Pod{pod0}
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return mapping
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}(),
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maxUnavailable: 0,
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numUnavailable: 1,
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},
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{
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name: "Two nodes with pods, MaxUnavailable in percents",
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Manager: func() *daemonSetsController {
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manager, _, _ := newTestController()
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addNodes(manager.nodeStore, 0, 2, nil)
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return manager
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}(),
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ds: func() *extensions.DaemonSet {
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ds := newDaemonSet("x")
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intStr := intstr.FromString("50%")
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ds.Spec.UpdateStrategy.RollingUpdate = &extensions.RollingUpdateDaemonSet{MaxUnavailable: &intStr}
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return ds
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}(),
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nodeToPods: func() map[string][]*v1.Pod {
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mapping := make(map[string][]*v1.Pod)
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pod0 := newPod("pod-0", "node-0", simpleDaemonSetLabel, nil)
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pod1 := newPod("pod-1", "node-1", simpleDaemonSetLabel, nil)
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markPodReady(pod0)
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markPodReady(pod1)
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mapping["node-0"] = []*v1.Pod{pod0}
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mapping["node-1"] = []*v1.Pod{pod1}
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return mapping
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}(),
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maxUnavailable: 1,
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numUnavailable: 0,
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},
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}
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for _, c := range cases {
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c.Manager.dsStore.Add(c.ds)
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maxUnavailable, numUnavailable, err := c.Manager.getUnavailableNumbers(c.ds, c.nodeToPods)
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if err != nil && c.Err != nil {
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if c.Err != err {
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t.Errorf("Test case: %s. Expected error: %v but got: %v", c.name, c.Err, err)
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}
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} else if err != nil {
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t.Errorf("Test case: %s. Unexpected error: %v", c.name, err)
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} else if maxUnavailable != c.maxUnavailable || numUnavailable != c.numUnavailable {
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t.Errorf("Test case: %s. Wrong values. maxUnavailable: %d, expected: %d, numUnavailable: %d. expected: %d", c.name, maxUnavailable, c.maxUnavailable, numUnavailable, c.numUnavailable)
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}
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}
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}
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