mirror of https://github.com/k3s-io/k3s
475 lines
20 KiB
Go
475 lines
20 KiB
Go
/*
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Copyright 2016 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 e2e_federation
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import (
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"encoding/json"
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"fmt"
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"reflect"
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"strings"
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"time"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/wait"
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fedclientset "k8s.io/kubernetes/federation/client/clientset_generated/federation_clientset"
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fedutil "k8s.io/kubernetes/federation/pkg/federation-controller/util"
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"k8s.io/kubernetes/pkg/api/v1"
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"k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
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"k8s.io/kubernetes/test/e2e/framework"
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fedframework "k8s.io/kubernetes/test/e2e_federation/framework"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/kubernetes/federation/apis/federation"
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fedreplicsetcontroller "k8s.io/kubernetes/federation/pkg/federation-controller/replicaset"
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)
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const (
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FederationReplicaSetPrefix = "federation-replicaset-"
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FederatedReplicaSetTimeout = 120 * time.Second
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)
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// Create/delete replicaset api objects
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var _ = framework.KubeDescribe("Federation replicasets [Feature:Federation]", func() {
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f := fedframework.NewDefaultFederatedFramework("federation-replicaset")
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Describe("ReplicaSet objects [NoCluster]", func() {
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AfterEach(func() {
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fedframework.SkipUnlessFederated(f.ClientSet)
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// Delete all replicasets.
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nsName := f.FederationNamespace.Name
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deleteAllReplicaSetsOrFail(f.FederationClientset, nsName)
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})
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It("should be created and deleted successfully", func() {
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fedframework.SkipUnlessFederated(f.ClientSet)
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nsName := f.FederationNamespace.Name
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rs := createReplicaSetOrFail(f.FederationClientset, newReplicaSet(nsName, FederationReplicaSetPrefix, 5, nil))
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By(fmt.Sprintf("Creation of replicaset %q in namespace %q succeeded. Deleting replicaset.", rs.Name, nsName))
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// Cleanup
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err := f.FederationClientset.Extensions().ReplicaSets(nsName).Delete(rs.Name, &metav1.DeleteOptions{})
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framework.ExpectNoError(err, "Error deleting replicaset %q in namespace %q", rs.Name, rs.Namespace)
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By(fmt.Sprintf("Deletion of replicaset %q in namespace %q succeeded.", rs.Name, nsName))
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})
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})
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// e2e cases for federated replicaset controller
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Describe("Federated ReplicaSet", func() {
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var (
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clusters map[string]*cluster
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)
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BeforeEach(func() {
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fedframework.SkipUnlessFederated(f.ClientSet)
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clusters, _ = getRegisteredClusters(UserAgentName, f)
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})
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AfterEach(func() {
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// Delete all replicasets.
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nsName := f.FederationNamespace.Name
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deleteAllReplicaSetsOrFail(f.FederationClientset, nsName)
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})
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It("should create and update matching replicasets in underling clusters", func() {
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nsName := f.FederationNamespace.Name
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cleanupFn := func(rs *v1beta1.ReplicaSet) {
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// cleanup. deletion of replicasets is not supported for underling clusters
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By(fmt.Sprintf("zero replicas then delete replicaset %q/%q", nsName, rs.Name))
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zeroReplicas := int32(0)
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rs.Spec.Replicas = &zeroReplicas
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updateReplicaSetOrFail(f.FederationClientset, rs)
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waitForReplicaSetOrFail(f.FederationClientset, nsName, rs.Name, clusters, nil)
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f.FederationClientset.ReplicaSets(nsName).Delete(rs.Name, &metav1.DeleteOptions{})
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}
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// general test with default replicaset pref
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func() {
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rs := newReplicaSet(nsName, FederationReplicaSetPrefix, 5, nil)
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rs = createReplicaSetOrFail(f.FederationClientset, rs)
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defer cleanupFn(rs)
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waitForReplicaSetOrFail(f.FederationClientset, nsName, rs.Name, clusters, nil)
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By(fmt.Sprintf("Successfuly created and synced replicaset %q/%q (%v/%v) to clusters", nsName, rs.Name, *rs.Spec.Replicas, rs.Status.Replicas))
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rs = newReplicaSet(nsName, FederationReplicaSetPrefix, 15, nil)
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updateReplicaSetOrFail(f.FederationClientset, rs)
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waitForReplicaSetOrFail(f.FederationClientset, nsName, rs.Name, clusters, nil)
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By(fmt.Sprintf("Successfuly updated and synced replicaset %q/%q (%v/%v) to clusters", nsName, rs.Name, *rs.Spec.Replicas, rs.Status.Replicas))
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}()
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// test for replicaset prefs with weight, min and max replicas
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createAndUpdateFn := func(pref *federation.FederatedReplicaSetPreferences, replicas int32, expect map[string]int32) {
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rs := newReplicaSet(nsName, FederationReplicaSetPrefix, replicas, pref)
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createReplicaSetOrFail(f.FederationClientset, rs)
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defer cleanupFn(rs)
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waitForReplicaSetOrFail(f.FederationClientset, nsName, rs.Name, clusters, expect)
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By(fmt.Sprintf("Successfuly created and synced replicaset %q/%q (%v/%v) to clusters", nsName, rs.Name, *rs.Spec.Replicas, rs.Status.Replicas))
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rs = newReplicaSet(nsName, FederationReplicaSetPrefix, 0, pref)
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updateReplicaSetOrFail(f.FederationClientset, rs)
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waitForReplicaSetOrFail(f.FederationClientset, nsName, rs.Name, clusters, nil)
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By(fmt.Sprintf("Successfuly updated and synced replicaset %q/%q (%v/%v) to clusters", nsName, rs.Name, *rs.Spec.Replicas, rs.Status.Replicas))
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rs = newReplicaSet(nsName, FederationReplicaSetPrefix, replicas, pref)
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updateReplicaSetOrFail(f.FederationClientset, rs)
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waitForReplicaSetOrFail(f.FederationClientset, nsName, rs.Name, clusters, expect)
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By(fmt.Sprintf("Successfuly updated and synced replicaset %q/%q (%v/%v) to clusters", nsName, rs.Name, *rs.Spec.Replicas, rs.Status.Replicas))
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}
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createAndUpdateFn(generageFedRsPrefsWithWeight(clusters))
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createAndUpdateFn(generageFedRsPrefsWithMin(clusters))
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createAndUpdateFn(generageFedRsPrefsWithMax(clusters))
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// test for rebalancing
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func() {
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pref1, pref2, replicas, expect1, expect2 := generageFedRsPrefsForRebalancing(clusters)
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rs := newReplicaSet(nsName, FederationReplicaSetPrefix, replicas, pref1)
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rs = createReplicaSetOrFail(f.FederationClientset, rs)
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defer cleanupFn(rs)
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waitForReplicaSetOrFail(f.FederationClientset, nsName, rs.Name, clusters, expect1)
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By(fmt.Sprintf("Successfuly created and synced replicaset %q/%q (%v/%v) to clusters", nsName, rs.Name, *rs.Spec.Replicas, rs.Status.Replicas))
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rs = newReplicaSet(nsName, FederationReplicaSetPrefix, replicas, pref2)
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updateReplicaSetOrFail(f.FederationClientset, rs)
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waitForReplicaSetOrFail(f.FederationClientset, nsName, rs.Name, clusters, expect1)
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By(fmt.Sprintf("Successfuly updated and synced replicaset %q/%q (%v/%v) to clusters", nsName, rs.Name, *rs.Spec.Replicas, rs.Status.Replicas))
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pref2 = updateFedRePrefsRebalance(pref2, true)
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rs = newReplicaSet(nsName, FederationReplicaSetPrefix, replicas, pref2)
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updateReplicaSetOrFail(f.FederationClientset, rs)
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waitForReplicaSetOrFail(f.FederationClientset, nsName, rs.Name, clusters, expect2)
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By(fmt.Sprintf("Successfuly updated and synced replicaset %q/%q (%v/%v) to clusters", nsName, rs.Name, *rs.Spec.Replicas, rs.Status.Replicas))
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}()
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})
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It("should be deleted from underlying clusters when OrphanDependents is false", func() {
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fedframework.SkipUnlessFederated(f.ClientSet)
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nsName := f.FederationNamespace.Name
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orphanDependents := false
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verifyCascadingDeletionForReplicaSet(f.FederationClientset, clusters, &orphanDependents, nsName)
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By(fmt.Sprintf("Verified that replica sets were deleted from underlying clusters"))
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})
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It("should not be deleted from underlying clusters when OrphanDependents is true", func() {
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fedframework.SkipUnlessFederated(f.ClientSet)
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nsName := f.FederationNamespace.Name
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orphanDependents := true
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verifyCascadingDeletionForReplicaSet(f.FederationClientset, clusters, &orphanDependents, nsName)
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By(fmt.Sprintf("Verified that replica sets were not deleted from underlying clusters"))
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})
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It("should not be deleted from underlying clusters when OrphanDependents is nil", func() {
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fedframework.SkipUnlessFederated(f.ClientSet)
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nsName := f.FederationNamespace.Name
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verifyCascadingDeletionForReplicaSet(f.FederationClientset, clusters, nil, nsName)
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By(fmt.Sprintf("Verified that replica sets were not deleted from underlying clusters"))
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})
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})
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})
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// deleteAllReplicaSetsOrFail deletes all replicasets in the given namespace name.
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func deleteAllReplicaSetsOrFail(clientset *fedclientset.Clientset, nsName string) {
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replicasetList, err := clientset.Extensions().ReplicaSets(nsName).List(metav1.ListOptions{})
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Expect(err).NotTo(HaveOccurred())
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orphanDependents := false
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for _, replicaset := range replicasetList.Items {
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deleteReplicaSetOrFail(clientset, nsName, replicaset.Name, &orphanDependents)
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}
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}
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// verifyCascadingDeletionForReplicaSet verifies that replicaSets are deleted
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// from underlying clusters when orphan dependents is false and they are not
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// deleted when orphan dependents is true.
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func verifyCascadingDeletionForReplicaSet(clientset *fedclientset.Clientset, clusters map[string]*cluster, orphanDependents *bool, nsName string) {
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replicaSet := createReplicaSetOrFail(clientset, newReplicaSet(nsName, FederationReplicaSetPrefix, 5, nil))
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replicaSetName := replicaSet.Name
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// Check subclusters if the replicaSet was created there.
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By(fmt.Sprintf("Waiting for replica sets %s to be created in all underlying clusters", replicaSetName))
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err := wait.Poll(5*time.Second, 2*time.Minute, func() (bool, error) {
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for _, cluster := range clusters {
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_, err := cluster.Extensions().ReplicaSets(nsName).Get(replicaSetName, metav1.GetOptions{})
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if err != nil && errors.IsNotFound(err) {
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return false, nil
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}
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if err != nil {
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return false, err
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}
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}
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return true, nil
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})
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framework.ExpectNoError(err, "Not all replica sets created")
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By(fmt.Sprintf("Deleting replica set %s", replicaSetName))
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deleteReplicaSetOrFail(clientset, nsName, replicaSetName, orphanDependents)
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By(fmt.Sprintf("Verifying replica sets %s in underlying clusters", replicaSetName))
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errMessages := []string{}
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for clusterName, clusterClientset := range clusters {
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_, err := clusterClientset.Extensions().ReplicaSets(nsName).Get(replicaSetName, metav1.GetOptions{})
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if (orphanDependents == nil || *orphanDependents == true) && errors.IsNotFound(err) {
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errMessages = append(errMessages, fmt.Sprintf("unexpected NotFound error for replica set %s in cluster %s, expected replica set to exist", replicaSetName, clusterName))
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} else if (orphanDependents != nil && *orphanDependents == false) && (err == nil || !errors.IsNotFound(err)) {
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errMessages = append(errMessages, fmt.Sprintf("expected NotFound error for replica set %s in cluster %s, got error: %v", replicaSetName, clusterName, err))
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}
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}
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if len(errMessages) != 0 {
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framework.Failf("%s", strings.Join(errMessages, "; "))
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}
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}
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func generageFedRsPrefsWithWeight(clusters map[string]*cluster) (pref *federation.FederatedReplicaSetPreferences, replicas int32, expect map[string]int32) {
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clusterNames := extraceClusterNames(clusters)
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pref = &federation.FederatedReplicaSetPreferences{
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Clusters: map[string]federation.ClusterReplicaSetPreferences{},
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}
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replicas = 0
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expect = map[string]int32{}
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for i, clusterName := range clusterNames {
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if i != 0 { // do not set weight for cluster[0] thus it should have no replicas scheduled
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clusterRsPref := pref.Clusters[clusterName]
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clusterRsPref.Weight = int64(i)
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replicas += int32(i)
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expect[clusterName] = int32(i)
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}
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}
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return
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}
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func generageFedRsPrefsWithMin(clusters map[string]*cluster) (pref *federation.FederatedReplicaSetPreferences, replicas int32, expect map[string]int32) {
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clusterNames := extraceClusterNames(clusters)
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pref = &federation.FederatedReplicaSetPreferences{
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Clusters: map[string]federation.ClusterReplicaSetPreferences{
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clusterNames[0]: {Weight: 100},
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},
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}
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replicas = 0
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expect = map[string]int32{}
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for i, clusterName := range clusterNames {
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if i != 0 { // do not set weight and minReplicas for cluster[0] thus it should have no replicas scheduled
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clusterRsPref := pref.Clusters[clusterName]
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clusterRsPref.Weight = int64(1)
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clusterRsPref.MinReplicas = int64(i + 2)
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replicas += int32(i + 2)
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expect[clusterName] = int32(i + 2)
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}
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}
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// the extra replica goes to cluster[0] which has the highest weight
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replicas += 1
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expect[clusterNames[0]] = 1
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return
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}
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func generageFedRsPrefsWithMax(clusters map[string]*cluster) (pref *federation.FederatedReplicaSetPreferences, replicas int32, expect map[string]int32) {
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clusterNames := extraceClusterNames(clusters)
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pref = &federation.FederatedReplicaSetPreferences{
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Clusters: map[string]federation.ClusterReplicaSetPreferences{
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clusterNames[0]: {Weight: 1},
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},
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}
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replicas = 0
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expect = map[string]int32{}
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for i, clusterName := range clusterNames {
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if i != 0 { // do not set maxReplicas for cluster[0] thus replicas exceeds the total maxReplicas turned to cluster[0]
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clusterRsPref := pref.Clusters[clusterName]
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clusterRsPref.Weight = int64(100)
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maxReplicas := int64(i)
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clusterRsPref.MaxReplicas = &maxReplicas
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replicas += int32(i)
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expect[clusterName] = int32(i)
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}
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}
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// extra replicas go to cluster[0] although it has the lowest weight as others hit the MaxReplicas
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replicas += 5
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expect[clusterNames[0]] = 5
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return
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}
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func updateFedRePrefsRebalance(pref *federation.FederatedReplicaSetPreferences, rebalance bool) *federation.FederatedReplicaSetPreferences {
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pref.Rebalance = rebalance
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return pref
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}
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func generageFedRsPrefsForRebalancing(clusters map[string]*cluster) (pref1, pref2 *federation.FederatedReplicaSetPreferences, replicas int32, expect1, expect2 map[string]int32) {
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clusterNames := extraceClusterNames(clusters)
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replicas = 3
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pref1 = &federation.FederatedReplicaSetPreferences{
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Clusters: map[string]federation.ClusterReplicaSetPreferences{
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clusterNames[0]: {Weight: 1},
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clusterNames[1]: {Weight: 2},
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},
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}
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expect1 = map[string]int32{
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clusterNames[0]: 1,
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clusterNames[1]: 2,
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}
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pref2 = &federation.FederatedReplicaSetPreferences{
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Clusters: map[string]federation.ClusterReplicaSetPreferences{
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clusterNames[0]: {Weight: 2},
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clusterNames[1]: {Weight: 1},
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},
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}
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expect2 = map[string]int32{
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clusterNames[0]: 2,
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clusterNames[1]: 1,
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}
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return
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}
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func waitForReplicaSetOrFail(c *fedclientset.Clientset, namespace string, replicaSetName string, clusters map[string]*cluster, expect map[string]int32) {
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err := waitForReplicaSet(c, namespace, replicaSetName, clusters, expect)
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framework.ExpectNoError(err, "Failed to verify replica set %q/%q, err: %v", namespace, replicaSetName, err)
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}
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func waitForReplicaSet(c *fedclientset.Clientset, namespace string, replicaSetName string, clusters map[string]*cluster, expect map[string]int32) error {
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err := wait.Poll(10*time.Second, FederatedReplicaSetTimeout, func() (bool, error) {
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frs, err := c.ReplicaSets(namespace).Get(replicaSetName, metav1.GetOptions{})
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if err != nil {
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return false, err
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}
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specReplicas, statusReplicas := int32(0), int32(0)
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for _, cluster := range clusters {
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rs, err := cluster.ReplicaSets(namespace).Get(replicaSetName, metav1.GetOptions{})
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if err != nil && !errors.IsNotFound(err) {
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By(fmt.Sprintf("Failed getting replicaset: %q/%q/%q, err: %v", cluster.name, namespace, replicaSetName, err))
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return false, err
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}
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if errors.IsNotFound(err) {
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if expect != nil && expect[cluster.name] > 0 {
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By(fmt.Sprintf("Replicaset %q/%q/%q not created replicas: %v", cluster.name, namespace, replicaSetName, expect[cluster.name]))
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return false, nil
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}
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} else {
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if !equivalentReplicaSet(frs, rs) {
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By(fmt.Sprintf("Replicaset meta or spec not match for cluster %q:\n federation: %v\n cluster: %v", cluster.name, frs, rs))
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return false, nil
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}
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if expect != nil && *rs.Spec.Replicas < expect[cluster.name] {
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By(fmt.Sprintf("Replicas not match for %q/%q/%q: expect: >= %v, actual: %v", cluster.name, namespace, replicaSetName, expect[cluster.name], *rs.Spec.Replicas))
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return false, nil
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}
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specReplicas += *rs.Spec.Replicas
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statusReplicas += rs.Status.Replicas
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}
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}
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if *frs.Spec.Replicas == 0 && frs.Status.Replicas != 0 {
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By(fmt.Sprintf("ReplicaSet %q/%q with zero replicas should match the status as no overflow happens: expected: 0, actual: %v", namespace, replicaSetName, frs.Status.Replicas))
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return false, nil
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}
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if statusReplicas == frs.Status.Replicas && specReplicas >= *frs.Spec.Replicas {
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return true, nil
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}
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By(fmt.Sprintf("Replicas not match, federation replicas: %v/%v, clusters replicas: %v/%v\n", *frs.Spec.Replicas, frs.Status.Replicas, specReplicas, statusReplicas))
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return false, nil
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})
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return err
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}
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func equivalentReplicaSet(fedReplicaSet, localReplicaSet *v1beta1.ReplicaSet) bool {
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localReplicaSetSpec := localReplicaSet.Spec
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localReplicaSetSpec.Replicas = fedReplicaSet.Spec.Replicas
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return fedutil.ObjectMetaEquivalent(fedReplicaSet.ObjectMeta, localReplicaSet.ObjectMeta) &&
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reflect.DeepEqual(fedReplicaSet.Spec, localReplicaSetSpec)
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}
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func createReplicaSetOrFail(clientset *fedclientset.Clientset, replicaset *v1beta1.ReplicaSet) *v1beta1.ReplicaSet {
|
|
namespace := replicaset.Namespace
|
|
if clientset == nil || len(namespace) == 0 {
|
|
Fail(fmt.Sprintf("Internal error: invalid parameters passed to createReplicaSetOrFail: clientset: %v, namespace: %v", clientset, namespace))
|
|
}
|
|
By(fmt.Sprintf("Creating federation replicaset %q in namespace %q", replicaset.Name, namespace))
|
|
|
|
newRS, err := clientset.Extensions().ReplicaSets(namespace).Create(replicaset)
|
|
framework.ExpectNoError(err, "Creating replicaset %q in namespace %q", replicaset.Name, namespace)
|
|
By(fmt.Sprintf("Successfully created federation replicaset %q in namespace %q", newRS.Name, namespace))
|
|
return newRS
|
|
}
|
|
|
|
func deleteReplicaSetOrFail(clientset *fedclientset.Clientset, nsName string, replicaSetName string, orphanDependents *bool) {
|
|
By(fmt.Sprintf("Deleting replica set %q in namespace %q", replicaSetName, nsName))
|
|
err := clientset.Extensions().ReplicaSets(nsName).Delete(replicaSetName, &metav1.DeleteOptions{OrphanDependents: orphanDependents})
|
|
if err != nil && !errors.IsNotFound(err) {
|
|
framework.ExpectNoError(err, "Error deleting replica set %q in namespace %q", replicaSetName, nsName)
|
|
}
|
|
|
|
waitForReplicaSetToBeDeletedOrFail(clientset, nsName, replicaSetName)
|
|
}
|
|
|
|
func updateReplicaSetOrFail(clientset *fedclientset.Clientset, replicaset *v1beta1.ReplicaSet) *v1beta1.ReplicaSet {
|
|
namespace := replicaset.Namespace
|
|
if clientset == nil || len(namespace) == 0 {
|
|
Fail(fmt.Sprintf("Internal error: invalid parameters passed to updateReplicaSetOrFail: clientset: %v, namespace: %v", clientset, namespace))
|
|
}
|
|
By(fmt.Sprintf("Updating federation replicaset %q in namespace %q", replicaset.Name, namespace))
|
|
|
|
newRs, err := clientset.ReplicaSets(namespace).Update(replicaset)
|
|
framework.ExpectNoError(err, "Updating replicaset %q in namespace %q", replicaset.Name, namespace)
|
|
By(fmt.Sprintf("Successfully updated federation replicaset %q in namespace %q", replicaset.Name, namespace))
|
|
|
|
return newRs
|
|
}
|
|
|
|
func newReplicaSet(namespace string, prefix string, replicas int32, pref *federation.FederatedReplicaSetPreferences) *v1beta1.ReplicaSet {
|
|
rs := v1beta1.ReplicaSet{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
GenerateName: prefix,
|
|
Namespace: namespace,
|
|
Annotations: map[string]string{},
|
|
},
|
|
Spec: v1beta1.ReplicaSetSpec{
|
|
Replicas: &replicas,
|
|
Selector: &metav1.LabelSelector{
|
|
MatchLabels: map[string]string{"name": "myrs"},
|
|
},
|
|
Template: v1.PodTemplateSpec{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Labels: map[string]string{"name": "myrs"},
|
|
},
|
|
Spec: v1.PodSpec{
|
|
Containers: []v1.Container{
|
|
{
|
|
Name: "nginx",
|
|
Image: "nginx",
|
|
},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
if pref != nil {
|
|
prefBytes, _ := json.Marshal(pref)
|
|
prefString := string(prefBytes)
|
|
rs.Annotations[fedreplicsetcontroller.FedReplicaSetPreferencesAnnotation] = prefString
|
|
}
|
|
return &rs
|
|
}
|
|
|
|
func extraceClusterNames(clusters map[string]*cluster) []string {
|
|
clusterNames := make([]string, 0, len(clusters))
|
|
for clusterName := range clusters {
|
|
clusterNames = append(clusterNames, clusterName)
|
|
}
|
|
return clusterNames
|
|
}
|