mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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1189 lines
37 KiB
Go
1189 lines
37 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors All rights reserved.
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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 node
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import (
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"errors"
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"sync"
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"testing"
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"time"
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"k8s.io/kubernetes/pkg/api"
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apierrors "k8s.io/kubernetes/pkg/api/errors"
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"k8s.io/kubernetes/pkg/api/resource"
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"k8s.io/kubernetes/pkg/api/unversioned"
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"k8s.io/kubernetes/pkg/apis/extensions"
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"k8s.io/kubernetes/pkg/client/cache"
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"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/fake"
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unversionedcore "k8s.io/kubernetes/pkg/client/typed/generated/core/unversioned"
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fakecloud "k8s.io/kubernetes/pkg/cloudprovider/providers/fake"
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"k8s.io/kubernetes/pkg/util"
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"k8s.io/kubernetes/pkg/util/wait"
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"k8s.io/kubernetes/pkg/watch"
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)
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const (
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testNodeMonitorGracePeriod = 40 * time.Second
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testNodeStartupGracePeriod = 60 * time.Second
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testNodeMonitorPeriod = 5 * time.Second
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)
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// FakeNodeHandler is a fake implementation of NodesInterface and NodeInterface. It
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// allows test cases to have fine-grained control over mock behaviors. We also need
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// PodsInterface and PodInterface to test list & delet pods, which is implemented in
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// the embedded client.Fake field.
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type FakeNodeHandler struct {
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*fake.Clientset
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// Input: Hooks determine if request is valid or not
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CreateHook func(*FakeNodeHandler, *api.Node) bool
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Existing []*api.Node
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// Output
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CreatedNodes []*api.Node
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DeletedNodes []*api.Node
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UpdatedNodes []*api.Node
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UpdatedNodeStatuses []*api.Node
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RequestCount int
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// Synchronization
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createLock sync.Mutex
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deleteWaitChan chan struct{}
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}
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type FakeLegacyHandler struct {
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unversionedcore.CoreInterface
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n *FakeNodeHandler
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}
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func (c *FakeNodeHandler) Core() unversionedcore.CoreInterface {
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return &FakeLegacyHandler{c.Clientset.Core(), c}
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}
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func (m *FakeLegacyHandler) Nodes() unversionedcore.NodeInterface {
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return m.n
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}
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func (m *FakeNodeHandler) Create(node *api.Node) (*api.Node, error) {
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m.createLock.Lock()
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defer func() {
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m.RequestCount++
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m.createLock.Unlock()
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}()
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for _, n := range m.Existing {
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if n.Name == node.Name {
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return nil, apierrors.NewAlreadyExists(api.Resource("nodes"), node.Name)
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}
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}
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if m.CreateHook == nil || m.CreateHook(m, node) {
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nodeCopy := *node
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m.CreatedNodes = append(m.CreatedNodes, &nodeCopy)
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return node, nil
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} else {
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return nil, errors.New("Create error.")
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}
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}
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func (m *FakeNodeHandler) Get(name string) (*api.Node, error) {
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return nil, nil
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}
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func (m *FakeNodeHandler) List(opts api.ListOptions) (*api.NodeList, error) {
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defer func() { m.RequestCount++ }()
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var nodes []*api.Node
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for i := 0; i < len(m.UpdatedNodes); i++ {
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if !contains(m.UpdatedNodes[i], m.DeletedNodes) {
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nodes = append(nodes, m.UpdatedNodes[i])
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}
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}
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for i := 0; i < len(m.Existing); i++ {
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if !contains(m.Existing[i], m.DeletedNodes) && !contains(m.Existing[i], nodes) {
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nodes = append(nodes, m.Existing[i])
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}
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}
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for i := 0; i < len(m.CreatedNodes); i++ {
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if !contains(m.Existing[i], m.DeletedNodes) && !contains(m.CreatedNodes[i], nodes) {
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nodes = append(nodes, m.CreatedNodes[i])
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}
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}
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nodeList := &api.NodeList{}
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for _, node := range nodes {
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nodeList.Items = append(nodeList.Items, *node)
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}
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return nodeList, nil
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}
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func (m *FakeNodeHandler) Delete(id string, opt *api.DeleteOptions) error {
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defer func() {
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if m.deleteWaitChan != nil {
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m.deleteWaitChan <- struct{}{}
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}
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}()
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m.DeletedNodes = append(m.DeletedNodes, newNode(id))
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m.RequestCount++
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return nil
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}
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func (m *FakeNodeHandler) DeleteCollection(opt *api.DeleteOptions, listOpts api.ListOptions) error {
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return nil
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}
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func (m *FakeNodeHandler) Update(node *api.Node) (*api.Node, error) {
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nodeCopy := *node
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m.UpdatedNodes = append(m.UpdatedNodes, &nodeCopy)
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m.RequestCount++
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return node, nil
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}
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func (m *FakeNodeHandler) UpdateStatus(node *api.Node) (*api.Node, error) {
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nodeCopy := *node
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m.UpdatedNodeStatuses = append(m.UpdatedNodeStatuses, &nodeCopy)
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m.RequestCount++
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return node, nil
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}
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func (m *FakeNodeHandler) Watch(opts api.ListOptions) (watch.Interface, error) {
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return nil, nil
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}
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func TestMonitorNodeStatusEvictPods(t *testing.T) {
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fakeNow := unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC)
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evictionTimeout := 10 * time.Minute
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table := []struct {
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fakeNodeHandler *FakeNodeHandler
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daemonSets []extensions.DaemonSet
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timeToPass time.Duration
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newNodeStatus api.NodeStatus
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expectedEvictPods bool
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description string
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}{
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// Node created recently, with no status (happens only at cluster startup).
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{
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fakeNodeHandler: &FakeNodeHandler{
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Existing: []*api.Node{
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{
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ObjectMeta: api.ObjectMeta{
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Name: "node0",
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CreationTimestamp: fakeNow,
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},
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},
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},
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Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}}),
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},
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daemonSets: nil,
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timeToPass: 0,
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newNodeStatus: api.NodeStatus{},
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expectedEvictPods: false,
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description: "Node created recently, with no status.",
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},
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// Node created long time ago, and kubelet posted NotReady for a short period of time.
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{
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fakeNodeHandler: &FakeNodeHandler{
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Existing: []*api.Node{
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{
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ObjectMeta: api.ObjectMeta{
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Name: "node0",
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CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
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},
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Status: api.NodeStatus{
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Conditions: []api.NodeCondition{
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{
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Type: api.NodeReady,
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Status: api.ConditionFalse,
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LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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},
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},
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},
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},
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},
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Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}}),
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},
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daemonSets: nil,
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timeToPass: evictionTimeout,
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newNodeStatus: api.NodeStatus{
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Conditions: []api.NodeCondition{
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{
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Type: api.NodeReady,
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Status: api.ConditionFalse,
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// Node status has just been updated, and is NotReady for 10min.
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LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 9, 0, 0, time.UTC),
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LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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},
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},
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},
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expectedEvictPods: false,
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description: "Node created long time ago, and kubelet posted NotReady for a short period of time.",
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},
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// Pod is ds-managed, and kubelet posted NotReady for a long period of time.
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{
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fakeNodeHandler: &FakeNodeHandler{
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Existing: []*api.Node{
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{
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ObjectMeta: api.ObjectMeta{
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Name: "node0",
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CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
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},
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Status: api.NodeStatus{
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Conditions: []api.NodeCondition{
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{
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Type: api.NodeReady,
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Status: api.ConditionFalse,
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LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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},
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},
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},
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},
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},
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Clientset: fake.NewSimpleClientset(
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&api.PodList{
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Items: []api.Pod{
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{
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ObjectMeta: api.ObjectMeta{
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Name: "pod0",
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Namespace: "default",
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Labels: map[string]string{"daemon": "yes"},
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},
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Spec: api.PodSpec{
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NodeName: "node0",
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},
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},
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},
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},
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),
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},
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daemonSets: []extensions.DaemonSet{
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{
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ObjectMeta: api.ObjectMeta{
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Name: "ds0",
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Namespace: "default",
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},
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Spec: extensions.DaemonSetSpec{
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Selector: &unversioned.LabelSelector{
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MatchLabels: map[string]string{"daemon": "yes"},
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},
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},
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},
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},
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timeToPass: time.Hour,
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newNodeStatus: api.NodeStatus{
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Conditions: []api.NodeCondition{
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{
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Type: api.NodeReady,
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Status: api.ConditionFalse,
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// Node status has just been updated, and is NotReady for 1hr.
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LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 59, 0, 0, time.UTC),
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LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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},
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},
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},
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expectedEvictPods: false,
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description: "Pod is ds-managed, and kubelet posted NotReady for a long period of time.",
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},
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// Node created long time ago, and kubelet posted NotReady for a long period of time.
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{
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fakeNodeHandler: &FakeNodeHandler{
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Existing: []*api.Node{
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{
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ObjectMeta: api.ObjectMeta{
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Name: "node0",
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CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
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},
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Status: api.NodeStatus{
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Conditions: []api.NodeCondition{
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{
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Type: api.NodeReady,
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Status: api.ConditionFalse,
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LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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},
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},
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},
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},
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},
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Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}}),
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},
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daemonSets: nil,
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timeToPass: time.Hour,
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newNodeStatus: api.NodeStatus{
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Conditions: []api.NodeCondition{
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{
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Type: api.NodeReady,
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Status: api.ConditionFalse,
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// Node status has just been updated, and is NotReady for 1hr.
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LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 59, 0, 0, time.UTC),
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LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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},
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},
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},
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expectedEvictPods: true,
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description: "Node created long time ago, and kubelet posted NotReady for a long period of time.",
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},
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// Node created long time ago, node controller posted Unknown for a short period of time.
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{
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fakeNodeHandler: &FakeNodeHandler{
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Existing: []*api.Node{
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{
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ObjectMeta: api.ObjectMeta{
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Name: "node0",
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CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
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},
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Status: api.NodeStatus{
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Conditions: []api.NodeCondition{
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{
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Type: api.NodeReady,
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Status: api.ConditionUnknown,
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LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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},
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},
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},
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},
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},
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Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}}),
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},
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daemonSets: nil,
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timeToPass: evictionTimeout - testNodeMonitorGracePeriod,
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newNodeStatus: api.NodeStatus{
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Conditions: []api.NodeCondition{
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{
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Type: api.NodeReady,
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Status: api.ConditionUnknown,
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// Node status was updated by nodecontroller 10min ago
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LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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},
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},
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},
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expectedEvictPods: false,
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description: "Node created long time ago, node controller posted Unknown for a short period of time.",
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},
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// Node created long time ago, node controller posted Unknown for a long period of time.
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{
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fakeNodeHandler: &FakeNodeHandler{
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Existing: []*api.Node{
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{
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ObjectMeta: api.ObjectMeta{
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Name: "node0",
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CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
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},
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Status: api.NodeStatus{
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Conditions: []api.NodeCondition{
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{
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Type: api.NodeReady,
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Status: api.ConditionUnknown,
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LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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},
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},
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},
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},
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},
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Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}}),
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},
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daemonSets: nil,
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timeToPass: 60 * time.Minute,
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newNodeStatus: api.NodeStatus{
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Conditions: []api.NodeCondition{
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{
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Type: api.NodeReady,
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Status: api.ConditionUnknown,
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// Node status was updated by nodecontroller 1hr ago
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LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
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},
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},
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},
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expectedEvictPods: true,
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description: "Node created long time ago, node controller posted Unknown for a long period of time.",
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},
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}
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for _, item := range table {
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nodeController := NewNodeController(nil, item.fakeNodeHandler,
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evictionTimeout, util.NewFakeAlwaysRateLimiter(), util.NewFakeAlwaysRateLimiter(), testNodeMonitorGracePeriod,
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testNodeStartupGracePeriod, testNodeMonitorPeriod, nil, false)
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nodeController.now = func() unversioned.Time { return fakeNow }
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for _, ds := range item.daemonSets {
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nodeController.daemonSetStore.Add(&ds)
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}
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if err := nodeController.monitorNodeStatus(); err != nil {
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t.Errorf("unexpected error: %v", err)
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}
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if item.timeToPass > 0 {
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nodeController.now = func() unversioned.Time { return unversioned.Time{Time: fakeNow.Add(item.timeToPass)} }
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item.fakeNodeHandler.Existing[0].Status = item.newNodeStatus
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}
|
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if err := nodeController.monitorNodeStatus(); err != nil {
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t.Errorf("unexpected error: %v", err)
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}
|
|
|
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nodeController.podEvictor.Try(func(value TimedValue) (bool, time.Duration) {
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remaining, _ := nodeController.deletePods(value.Value)
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if remaining {
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nodeController.terminationEvictor.Add(value.Value)
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}
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return true, 0
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})
|
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nodeController.podEvictor.Try(func(value TimedValue) (bool, time.Duration) {
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nodeController.terminatePods(value.Value, value.AddedAt)
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return true, 0
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})
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podEvicted := false
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for _, action := range item.fakeNodeHandler.Actions() {
|
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if action.GetVerb() == "delete" && action.GetResource() == "pods" {
|
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podEvicted = true
|
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}
|
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}
|
|
|
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if item.expectedEvictPods != podEvicted {
|
|
t.Errorf("expected pod eviction: %+v, got %+v for %+v", item.expectedEvictPods,
|
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podEvicted, item.description)
|
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}
|
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}
|
|
}
|
|
|
|
// TestCloudProviderNoRateLimit tests that monitorNodes() immediately deletes
|
|
// pods and the node when kubelet has not reported, and the cloudprovider says
|
|
// the node is gone.
|
|
func TestCloudProviderNoRateLimit(t *testing.T) {
|
|
fnh := &FakeNodeHandler{
|
|
Existing: []*api.Node{
|
|
{
|
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ObjectMeta: api.ObjectMeta{
|
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Name: "node0",
|
|
CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
|
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},
|
|
Status: api.NodeStatus{
|
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Conditions: []api.NodeCondition{
|
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{
|
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Type: api.NodeReady,
|
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Status: api.ConditionUnknown,
|
|
LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
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},
|
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},
|
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},
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},
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},
|
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Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0"), *newPod("pod1", "node0")}}),
|
|
deleteWaitChan: make(chan struct{}),
|
|
}
|
|
nodeController := NewNodeController(nil, fnh, 10*time.Minute,
|
|
util.NewFakeAlwaysRateLimiter(), util.NewFakeAlwaysRateLimiter(),
|
|
testNodeMonitorGracePeriod, testNodeStartupGracePeriod,
|
|
testNodeMonitorPeriod, nil, false)
|
|
nodeController.cloud = &fakecloud.FakeCloud{}
|
|
nodeController.now = func() unversioned.Time { return unversioned.Date(2016, 1, 1, 12, 0, 0, 0, time.UTC) }
|
|
nodeController.nodeExistsInCloudProvider = func(nodeName string) (bool, error) {
|
|
return false, nil
|
|
}
|
|
// monitorNodeStatus should allow this node to be immediately deleted
|
|
if err := nodeController.monitorNodeStatus(); err != nil {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
select {
|
|
case <-fnh.deleteWaitChan:
|
|
case <-time.After(wait.ForeverTestTimeout):
|
|
t.Errorf("Timed out waiting %v for node to be deleted", wait.ForeverTestTimeout)
|
|
}
|
|
if len(fnh.DeletedNodes) != 1 || fnh.DeletedNodes[0].Name != "node0" {
|
|
t.Errorf("Node was not deleted")
|
|
}
|
|
if nodeOnQueue := nodeController.podEvictor.Remove("node0"); nodeOnQueue {
|
|
t.Errorf("Node was queued for eviction. Should have been immediately deleted.")
|
|
}
|
|
}
|
|
|
|
func TestMonitorNodeStatusUpdateStatus(t *testing.T) {
|
|
fakeNow := unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC)
|
|
table := []struct {
|
|
fakeNodeHandler *FakeNodeHandler
|
|
timeToPass time.Duration
|
|
newNodeStatus api.NodeStatus
|
|
expectedEvictPods bool
|
|
expectedRequestCount int
|
|
expectedNodes []*api.Node
|
|
}{
|
|
// Node created long time ago, without status:
|
|
// Expect Unknown status posted from node controller.
|
|
{
|
|
fakeNodeHandler: &FakeNodeHandler{
|
|
Existing: []*api.Node{
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "node0",
|
|
CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
|
|
},
|
|
},
|
|
},
|
|
Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}}),
|
|
},
|
|
expectedRequestCount: 2, // List+Update
|
|
expectedNodes: []*api.Node{
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "node0",
|
|
CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
|
|
},
|
|
Status: api.NodeStatus{
|
|
Conditions: []api.NodeCondition{
|
|
{
|
|
Type: api.NodeReady,
|
|
Status: api.ConditionUnknown,
|
|
Reason: "NodeStatusNeverUpdated",
|
|
Message: "Kubelet never posted node status.",
|
|
LastHeartbeatTime: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: fakeNow,
|
|
},
|
|
{
|
|
Type: api.NodeOutOfDisk,
|
|
Status: api.ConditionUnknown,
|
|
Reason: "NodeStatusNeverUpdated",
|
|
Message: "Kubelet never posted node status.",
|
|
LastHeartbeatTime: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: fakeNow,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
// Node created recently, without status.
|
|
// Expect no action from node controller (within startup grace period).
|
|
{
|
|
fakeNodeHandler: &FakeNodeHandler{
|
|
Existing: []*api.Node{
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "node0",
|
|
CreationTimestamp: fakeNow,
|
|
},
|
|
},
|
|
},
|
|
Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}}),
|
|
},
|
|
expectedRequestCount: 1, // List
|
|
expectedNodes: nil,
|
|
},
|
|
// Node created long time ago, with status updated by kubelet exceeds grace period.
|
|
// Expect Unknown status posted from node controller.
|
|
{
|
|
fakeNodeHandler: &FakeNodeHandler{
|
|
Existing: []*api.Node{
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "node0",
|
|
CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
|
|
},
|
|
Status: api.NodeStatus{
|
|
Conditions: []api.NodeCondition{
|
|
{
|
|
Type: api.NodeReady,
|
|
Status: api.ConditionTrue,
|
|
// Node status hasn't been updated for 1hr.
|
|
LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
},
|
|
{
|
|
Type: api.NodeOutOfDisk,
|
|
Status: api.ConditionFalse,
|
|
// Node status hasn't been updated for 1hr.
|
|
LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
},
|
|
},
|
|
Capacity: api.ResourceList{
|
|
api.ResourceName(api.ResourceCPU): resource.MustParse("10"),
|
|
api.ResourceName(api.ResourceMemory): resource.MustParse("10G"),
|
|
},
|
|
},
|
|
Spec: api.NodeSpec{
|
|
ExternalID: "node0",
|
|
},
|
|
},
|
|
},
|
|
Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}}),
|
|
},
|
|
expectedRequestCount: 3, // (List+)List+Update
|
|
timeToPass: time.Hour,
|
|
newNodeStatus: api.NodeStatus{
|
|
Conditions: []api.NodeCondition{
|
|
{
|
|
Type: api.NodeReady,
|
|
Status: api.ConditionTrue,
|
|
// Node status hasn't been updated for 1hr.
|
|
LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
},
|
|
{
|
|
Type: api.NodeOutOfDisk,
|
|
Status: api.ConditionFalse,
|
|
// Node status hasn't been updated for 1hr.
|
|
LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
},
|
|
},
|
|
Capacity: api.ResourceList{
|
|
api.ResourceName(api.ResourceCPU): resource.MustParse("10"),
|
|
api.ResourceName(api.ResourceMemory): resource.MustParse("10G"),
|
|
},
|
|
},
|
|
expectedNodes: []*api.Node{
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "node0",
|
|
CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
|
|
},
|
|
Status: api.NodeStatus{
|
|
Conditions: []api.NodeCondition{
|
|
{
|
|
Type: api.NodeReady,
|
|
Status: api.ConditionUnknown,
|
|
Reason: "NodeStatusUnknown",
|
|
Message: "Kubelet stopped posting node status.",
|
|
LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: unversioned.Time{Time: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC).Add(time.Hour)},
|
|
},
|
|
{
|
|
Type: api.NodeOutOfDisk,
|
|
Status: api.ConditionUnknown,
|
|
Reason: "NodeStatusUnknown",
|
|
Message: "Kubelet stopped posting node status.",
|
|
LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: unversioned.Time{Time: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC).Add(time.Hour)},
|
|
},
|
|
},
|
|
Capacity: api.ResourceList{
|
|
api.ResourceName(api.ResourceCPU): resource.MustParse("10"),
|
|
api.ResourceName(api.ResourceMemory): resource.MustParse("10G"),
|
|
},
|
|
},
|
|
Spec: api.NodeSpec{
|
|
ExternalID: "node0",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
// Node created long time ago, with status updated recently.
|
|
// Expect no action from node controller (within monitor grace period).
|
|
{
|
|
fakeNodeHandler: &FakeNodeHandler{
|
|
Existing: []*api.Node{
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "node0",
|
|
CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
|
|
},
|
|
Status: api.NodeStatus{
|
|
Conditions: []api.NodeCondition{
|
|
{
|
|
Type: api.NodeReady,
|
|
Status: api.ConditionTrue,
|
|
// Node status has just been updated.
|
|
LastHeartbeatTime: fakeNow,
|
|
LastTransitionTime: fakeNow,
|
|
},
|
|
},
|
|
Capacity: api.ResourceList{
|
|
api.ResourceName(api.ResourceCPU): resource.MustParse("10"),
|
|
api.ResourceName(api.ResourceMemory): resource.MustParse("10G"),
|
|
},
|
|
},
|
|
Spec: api.NodeSpec{
|
|
ExternalID: "node0",
|
|
},
|
|
},
|
|
},
|
|
Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}}),
|
|
},
|
|
expectedRequestCount: 1, // List
|
|
expectedNodes: nil,
|
|
},
|
|
}
|
|
|
|
for i, item := range table {
|
|
nodeController := NewNodeController(nil, item.fakeNodeHandler, 5*time.Minute, util.NewFakeAlwaysRateLimiter(),
|
|
util.NewFakeAlwaysRateLimiter(), testNodeMonitorGracePeriod, testNodeStartupGracePeriod, testNodeMonitorPeriod, nil, false)
|
|
nodeController.now = func() unversioned.Time { return fakeNow }
|
|
if err := nodeController.monitorNodeStatus(); err != nil {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
if item.timeToPass > 0 {
|
|
nodeController.now = func() unversioned.Time { return unversioned.Time{Time: fakeNow.Add(item.timeToPass)} }
|
|
item.fakeNodeHandler.Existing[0].Status = item.newNodeStatus
|
|
if err := nodeController.monitorNodeStatus(); err != nil {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
}
|
|
if item.expectedRequestCount != item.fakeNodeHandler.RequestCount {
|
|
t.Errorf("expected %v call, but got %v.", item.expectedRequestCount, item.fakeNodeHandler.RequestCount)
|
|
}
|
|
if len(item.fakeNodeHandler.UpdatedNodes) > 0 && !api.Semantic.DeepEqual(item.expectedNodes, item.fakeNodeHandler.UpdatedNodes) {
|
|
t.Errorf("Case[%d] unexpected nodes: %s", i, util.ObjectDiff(item.expectedNodes[0], item.fakeNodeHandler.UpdatedNodes[0]))
|
|
}
|
|
if len(item.fakeNodeHandler.UpdatedNodeStatuses) > 0 && !api.Semantic.DeepEqual(item.expectedNodes, item.fakeNodeHandler.UpdatedNodeStatuses) {
|
|
t.Errorf("Case[%d] unexpected nodes: %s", i, util.ObjectDiff(item.expectedNodes[0], item.fakeNodeHandler.UpdatedNodeStatuses[0]))
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestMonitorNodeStatusMarkPodsNotReady(t *testing.T) {
|
|
fakeNow := unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC)
|
|
table := []struct {
|
|
fakeNodeHandler *FakeNodeHandler
|
|
timeToPass time.Duration
|
|
newNodeStatus api.NodeStatus
|
|
expectedPodStatusUpdate bool
|
|
}{
|
|
// Node created recently, without status.
|
|
// Expect no action from node controller (within startup grace period).
|
|
{
|
|
fakeNodeHandler: &FakeNodeHandler{
|
|
Existing: []*api.Node{
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "node0",
|
|
CreationTimestamp: fakeNow,
|
|
},
|
|
},
|
|
},
|
|
Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}}),
|
|
},
|
|
expectedPodStatusUpdate: false,
|
|
},
|
|
// Node created long time ago, with status updated recently.
|
|
// Expect no action from node controller (within monitor grace period).
|
|
{
|
|
fakeNodeHandler: &FakeNodeHandler{
|
|
Existing: []*api.Node{
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "node0",
|
|
CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
|
|
},
|
|
Status: api.NodeStatus{
|
|
Conditions: []api.NodeCondition{
|
|
{
|
|
Type: api.NodeReady,
|
|
Status: api.ConditionTrue,
|
|
// Node status has just been updated.
|
|
LastHeartbeatTime: fakeNow,
|
|
LastTransitionTime: fakeNow,
|
|
},
|
|
},
|
|
Capacity: api.ResourceList{
|
|
api.ResourceName(api.ResourceCPU): resource.MustParse("10"),
|
|
api.ResourceName(api.ResourceMemory): resource.MustParse("10G"),
|
|
},
|
|
},
|
|
Spec: api.NodeSpec{
|
|
ExternalID: "node0",
|
|
},
|
|
},
|
|
},
|
|
Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}}),
|
|
},
|
|
expectedPodStatusUpdate: false,
|
|
},
|
|
// Node created long time ago, with status updated by kubelet exceeds grace period.
|
|
// Expect pods status updated and Unknown node status posted from node controller
|
|
{
|
|
fakeNodeHandler: &FakeNodeHandler{
|
|
Existing: []*api.Node{
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "node0",
|
|
CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
|
|
},
|
|
Status: api.NodeStatus{
|
|
Conditions: []api.NodeCondition{
|
|
{
|
|
Type: api.NodeReady,
|
|
Status: api.ConditionTrue,
|
|
// Node status hasn't been updated for 1hr.
|
|
LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
},
|
|
{
|
|
Type: api.NodeOutOfDisk,
|
|
Status: api.ConditionFalse,
|
|
// Node status hasn't been updated for 1hr.
|
|
LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
},
|
|
},
|
|
Capacity: api.ResourceList{
|
|
api.ResourceName(api.ResourceCPU): resource.MustParse("10"),
|
|
api.ResourceName(api.ResourceMemory): resource.MustParse("10G"),
|
|
},
|
|
},
|
|
Spec: api.NodeSpec{
|
|
ExternalID: "node0",
|
|
},
|
|
},
|
|
},
|
|
Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0")}}),
|
|
},
|
|
timeToPass: 1 * time.Minute,
|
|
newNodeStatus: api.NodeStatus{
|
|
Conditions: []api.NodeCondition{
|
|
{
|
|
Type: api.NodeReady,
|
|
Status: api.ConditionTrue,
|
|
// Node status hasn't been updated for 1hr.
|
|
LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
},
|
|
{
|
|
Type: api.NodeOutOfDisk,
|
|
Status: api.ConditionFalse,
|
|
// Node status hasn't been updated for 1hr.
|
|
LastHeartbeatTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
LastTransitionTime: unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC),
|
|
},
|
|
},
|
|
Capacity: api.ResourceList{
|
|
api.ResourceName(api.ResourceCPU): resource.MustParse("10"),
|
|
api.ResourceName(api.ResourceMemory): resource.MustParse("10G"),
|
|
},
|
|
},
|
|
expectedPodStatusUpdate: true,
|
|
},
|
|
}
|
|
|
|
for i, item := range table {
|
|
nodeController := NewNodeController(nil, item.fakeNodeHandler, 5*time.Minute, util.NewFakeAlwaysRateLimiter(),
|
|
util.NewFakeAlwaysRateLimiter(), testNodeMonitorGracePeriod, testNodeStartupGracePeriod, testNodeMonitorPeriod, nil, false)
|
|
nodeController.now = func() unversioned.Time { return fakeNow }
|
|
if err := nodeController.monitorNodeStatus(); err != nil {
|
|
t.Errorf("Case[%d] unexpected error: %v", i, err)
|
|
}
|
|
if item.timeToPass > 0 {
|
|
nodeController.now = func() unversioned.Time { return unversioned.Time{Time: fakeNow.Add(item.timeToPass)} }
|
|
item.fakeNodeHandler.Existing[0].Status = item.newNodeStatus
|
|
if err := nodeController.monitorNodeStatus(); err != nil {
|
|
t.Errorf("Case[%d] unexpected error: %v", i, err)
|
|
}
|
|
}
|
|
|
|
podStatusUpdated := false
|
|
for _, action := range item.fakeNodeHandler.Actions() {
|
|
if action.GetVerb() == "update" && action.GetResource() == "pods" && action.GetSubresource() == "status" {
|
|
podStatusUpdated = true
|
|
}
|
|
}
|
|
if podStatusUpdated != item.expectedPodStatusUpdate {
|
|
t.Errorf("Case[%d] expect pod status updated to be %v, but got %v", i, item.expectedPodStatusUpdate, podStatusUpdated)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestNodeDeletion(t *testing.T) {
|
|
fakeNow := unversioned.Date(2015, 1, 1, 12, 0, 0, 0, time.UTC)
|
|
fakeNodeHandler := &FakeNodeHandler{
|
|
Existing: []*api.Node{
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "node0",
|
|
CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
|
|
},
|
|
Status: api.NodeStatus{
|
|
Conditions: []api.NodeCondition{
|
|
{
|
|
Type: api.NodeReady,
|
|
Status: api.ConditionTrue,
|
|
// Node status has just been updated.
|
|
LastHeartbeatTime: fakeNow,
|
|
LastTransitionTime: fakeNow,
|
|
},
|
|
},
|
|
Capacity: api.ResourceList{
|
|
api.ResourceName(api.ResourceCPU): resource.MustParse("10"),
|
|
api.ResourceName(api.ResourceMemory): resource.MustParse("10G"),
|
|
},
|
|
},
|
|
Spec: api.NodeSpec{
|
|
ExternalID: "node0",
|
|
},
|
|
},
|
|
{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "node1",
|
|
CreationTimestamp: unversioned.Date(2012, 1, 1, 0, 0, 0, 0, time.UTC),
|
|
},
|
|
Status: api.NodeStatus{
|
|
Conditions: []api.NodeCondition{
|
|
{
|
|
Type: api.NodeReady,
|
|
Status: api.ConditionTrue,
|
|
// Node status has just been updated.
|
|
LastHeartbeatTime: fakeNow,
|
|
LastTransitionTime: fakeNow,
|
|
},
|
|
},
|
|
Capacity: api.ResourceList{
|
|
api.ResourceName(api.ResourceCPU): resource.MustParse("10"),
|
|
api.ResourceName(api.ResourceMemory): resource.MustParse("10G"),
|
|
},
|
|
},
|
|
Spec: api.NodeSpec{
|
|
ExternalID: "node0",
|
|
},
|
|
},
|
|
},
|
|
Clientset: fake.NewSimpleClientset(&api.PodList{Items: []api.Pod{*newPod("pod0", "node0"), *newPod("pod1", "node1")}}),
|
|
}
|
|
|
|
nodeController := NewNodeController(nil, fakeNodeHandler, 5*time.Minute, util.NewFakeAlwaysRateLimiter(), util.NewFakeAlwaysRateLimiter(),
|
|
testNodeMonitorGracePeriod, testNodeStartupGracePeriod, testNodeMonitorPeriod, nil, false)
|
|
nodeController.now = func() unversioned.Time { return fakeNow }
|
|
if err := nodeController.monitorNodeStatus(); err != nil {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
fakeNodeHandler.Delete("node1", nil)
|
|
if err := nodeController.monitorNodeStatus(); err != nil {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
nodeController.podEvictor.Try(func(value TimedValue) (bool, time.Duration) {
|
|
nodeController.deletePods(value.Value)
|
|
return true, 0
|
|
})
|
|
podEvicted := false
|
|
for _, action := range fakeNodeHandler.Actions() {
|
|
if action.GetVerb() == "delete" && action.GetResource() == "pods" {
|
|
podEvicted = true
|
|
}
|
|
}
|
|
if !podEvicted {
|
|
t.Error("expected pods to be evicted from the deleted node")
|
|
}
|
|
}
|
|
|
|
func TestCheckPod(t *testing.T) {
|
|
|
|
tcs := []struct {
|
|
pod api.Pod
|
|
prune bool
|
|
}{
|
|
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{DeletionTimestamp: nil},
|
|
Spec: api.PodSpec{NodeName: "new"},
|
|
},
|
|
prune: false,
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{DeletionTimestamp: nil},
|
|
Spec: api.PodSpec{NodeName: "old"},
|
|
},
|
|
prune: false,
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{DeletionTimestamp: nil},
|
|
Spec: api.PodSpec{NodeName: ""},
|
|
},
|
|
prune: false,
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{DeletionTimestamp: nil},
|
|
Spec: api.PodSpec{NodeName: "nonexistant"},
|
|
},
|
|
prune: false,
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{DeletionTimestamp: &unversioned.Time{}},
|
|
Spec: api.PodSpec{NodeName: "new"},
|
|
},
|
|
prune: false,
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{DeletionTimestamp: &unversioned.Time{}},
|
|
Spec: api.PodSpec{NodeName: "old"},
|
|
},
|
|
prune: true,
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{DeletionTimestamp: &unversioned.Time{}},
|
|
Spec: api.PodSpec{NodeName: "older"},
|
|
},
|
|
prune: true,
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{DeletionTimestamp: &unversioned.Time{}},
|
|
Spec: api.PodSpec{NodeName: "oldest"},
|
|
},
|
|
prune: true,
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{DeletionTimestamp: &unversioned.Time{}},
|
|
Spec: api.PodSpec{NodeName: ""},
|
|
},
|
|
prune: true,
|
|
},
|
|
{
|
|
pod: api.Pod{
|
|
ObjectMeta: api.ObjectMeta{DeletionTimestamp: &unversioned.Time{}},
|
|
Spec: api.PodSpec{NodeName: "nonexistant"},
|
|
},
|
|
prune: true,
|
|
},
|
|
}
|
|
|
|
nc := NewNodeController(nil, nil, 0, nil, nil, 0, 0, 0, nil, false)
|
|
nc.nodeStore.Store = cache.NewStore(cache.MetaNamespaceKeyFunc)
|
|
nc.nodeStore.Store.Add(&api.Node{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "new",
|
|
},
|
|
Status: api.NodeStatus{
|
|
NodeInfo: api.NodeSystemInfo{
|
|
KubeletVersion: "v1.1.0",
|
|
},
|
|
},
|
|
})
|
|
nc.nodeStore.Store.Add(&api.Node{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "old",
|
|
},
|
|
Status: api.NodeStatus{
|
|
NodeInfo: api.NodeSystemInfo{
|
|
KubeletVersion: "v1.0.0",
|
|
},
|
|
},
|
|
})
|
|
nc.nodeStore.Store.Add(&api.Node{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "older",
|
|
},
|
|
Status: api.NodeStatus{
|
|
NodeInfo: api.NodeSystemInfo{
|
|
KubeletVersion: "v0.21.4",
|
|
},
|
|
},
|
|
})
|
|
nc.nodeStore.Store.Add(&api.Node{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: "oldest",
|
|
},
|
|
Status: api.NodeStatus{
|
|
NodeInfo: api.NodeSystemInfo{
|
|
KubeletVersion: "v0.19.3",
|
|
},
|
|
},
|
|
})
|
|
|
|
for i, tc := range tcs {
|
|
var deleteCalls int
|
|
nc.forcefullyDeletePod = func(_ *api.Pod) error {
|
|
deleteCalls++
|
|
return nil
|
|
}
|
|
|
|
nc.maybeDeleteTerminatingPod(&tc.pod)
|
|
|
|
if tc.prune && deleteCalls != 1 {
|
|
t.Errorf("[%v] expected number of delete calls to be 1 but got %v", i, deleteCalls)
|
|
}
|
|
if !tc.prune && deleteCalls != 0 {
|
|
t.Errorf("[%v] expected number of delete calls to be 0 but got %v", i, deleteCalls)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestCleanupOrphanedPods(t *testing.T) {
|
|
newPod := func(name, node string) api.Pod {
|
|
return api.Pod{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: name,
|
|
},
|
|
Spec: api.PodSpec{
|
|
NodeName: node,
|
|
},
|
|
}
|
|
}
|
|
pods := []api.Pod{
|
|
newPod("a", "foo"),
|
|
newPod("b", "bar"),
|
|
newPod("c", "gone"),
|
|
}
|
|
nc := NewNodeController(nil, nil, 0, nil, nil, 0, 0, 0, nil, false)
|
|
|
|
nc.nodeStore.Store.Add(newNode("foo"))
|
|
nc.nodeStore.Store.Add(newNode("bar"))
|
|
for _, pod := range pods {
|
|
p := pod
|
|
nc.podStore.Store.Add(&p)
|
|
}
|
|
|
|
var deleteCalls int
|
|
var deletedPodName string
|
|
nc.forcefullyDeletePod = func(p *api.Pod) error {
|
|
deleteCalls++
|
|
deletedPodName = p.ObjectMeta.Name
|
|
return nil
|
|
}
|
|
nc.cleanupOrphanedPods()
|
|
|
|
if deleteCalls != 1 {
|
|
t.Fatalf("expected one delete, got: %v", deleteCalls)
|
|
}
|
|
if deletedPodName != "c" {
|
|
t.Fatalf("expected deleted pod name to be 'c', but got: %q", deletedPodName)
|
|
}
|
|
}
|
|
|
|
func newNode(name string) *api.Node {
|
|
return &api.Node{
|
|
ObjectMeta: api.ObjectMeta{Name: name},
|
|
Spec: api.NodeSpec{
|
|
ExternalID: name,
|
|
},
|
|
Status: api.NodeStatus{
|
|
Capacity: api.ResourceList{
|
|
api.ResourceName(api.ResourceCPU): resource.MustParse("10"),
|
|
api.ResourceName(api.ResourceMemory): resource.MustParse("10G"),
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
func newPod(name, host string) *api.Pod {
|
|
return &api.Pod{ObjectMeta: api.ObjectMeta{Name: name}, Spec: api.PodSpec{NodeName: host},
|
|
Status: api.PodStatus{Conditions: []api.PodCondition{{Type: api.PodReady, Status: api.ConditionTrue}}}}
|
|
}
|
|
|
|
func contains(node *api.Node, nodes []*api.Node) bool {
|
|
for i := 0; i < len(nodes); i++ {
|
|
if node.Name == nodes[i].Name {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|