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integration: add eviction tests for UnhealthyPodEvictionPolicy

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This commit is contained in:
Filip Křepinský 2022-11-09 22:18:33 +01:00
parent 3e3912467a
commit 2fbbc473b7
1 changed files with 104 additions and 14 deletions
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118
test/integration/evictions/evictions_test.go
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@ -104,7 +104,7 @@ func TestConcurrentEvictionRequests(t *testing.T) {
t.Errorf("Failed to create PodDisruptionBudget: %v", err)
}
waitPDBStable(t, clientSet, numOfEvictions, ns.Name, pdb.Name)
waitPDBStable(t, clientSet, ns.Name, pdb.Name, numOfEvictions)
var numberPodsEvicted uint32
errCh := make(chan error, 3*numOfEvictions)
@ -212,7 +212,7 @@ func TestTerminalPodEviction(t *testing.T) {
t.Errorf("Failed to create PodDisruptionBudget: %v", err)
}
waitPDBStable(t, clientSet, 1, ns.Name, pdb.Name)
waitPDBStable(t, clientSet, ns.Name, pdb.Name, 1)
pdbList, err := clientSet.PolicyV1().PodDisruptionBudgets(ns.Name).List(context.TODO(), metav1.ListOptions{})
if err != nil {
@ -394,13 +394,7 @@ func TestEvictionWithFinalizers(t *testing.T) {
eviction := newV1Eviction(ns.Name, pod.Name, deleteOption)
err := wait.PollImmediate(5*time.Second, 60*time.Second, func() (bool, error) {
e := clientSet.PolicyV1().Evictions(ns.Name).Evict(ctx, eviction)
if e != nil {
return false, e
}
return true, nil
})
err := clientSet.PolicyV1().Evictions(ns.Name).Evict(ctx, eviction)
if err != nil {
t.Fatalf("Eviction of pod failed %v", err)
}
@ -419,6 +413,95 @@ func TestEvictionWithFinalizers(t *testing.T) {
}
}
// TestEvictionWithUnhealthyPodEvictionPolicy tests eviction with a PDB that has a UnhealthyPodEvictionPolicy
func TestEvictionWithUnhealthyPodEvictionPolicy(t *testing.T) {
cases := map[string]struct {
enableUnhealthyPodEvictionPolicy bool
unhealthyPodEvictionPolicy *policyv1.UnhealthyPodEvictionPolicyType
isPodReady bool
}{
"UnhealthyPodEvictionPolicy disabled and policy not set": {
enableUnhealthyPodEvictionPolicy: false,
unhealthyPodEvictionPolicy: nil,
isPodReady: true,
},
"UnhealthyPodEvictionPolicy enabled but policy not set": {
enableUnhealthyPodEvictionPolicy: true,
unhealthyPodEvictionPolicy: nil,
isPodReady: true,
},
"UnhealthyPodEvictionPolicy enabled but policy set to IfHealthyBudget with ready pod": {
enableUnhealthyPodEvictionPolicy: true,
unhealthyPodEvictionPolicy: unhealthyPolicyPtr(policyv1.IfHealthyBudget),
isPodReady: true,
},
"UnhealthyPodEvictionPolicy enabled but policy set to AlwaysAllow with ready pod": {
enableUnhealthyPodEvictionPolicy: true,
unhealthyPodEvictionPolicy: unhealthyPolicyPtr(policyv1.AlwaysAllow),
isPodReady: true,
},
"UnhealthyPodEvictionPolicy enabled but policy set to AlwaysAllow with unready pod": {
enableUnhealthyPodEvictionPolicy: true,
unhealthyPodEvictionPolicy: unhealthyPolicyPtr(policyv1.AlwaysAllow),
isPodReady: false,
},
}
for name, tc := range cases {
t.Run(name, func(t *testing.T) {
defer featuregatetesting.SetFeatureGateDuringTest(t, feature.DefaultFeatureGate, features.PDBUnhealthyPodEvictionPolicy, tc.enableUnhealthyPodEvictionPolicy)()
closeFn, rm, informers, _, clientSet := rmSetup(t)
defer closeFn()
ns := framework.CreateNamespaceOrDie(clientSet, "eviction-with-pdb-pod-healthy-policy", t)
defer framework.DeleteNamespaceOrDie(clientSet, ns, t)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
informers.Start(ctx.Done())
go rm.Run(ctx)
pod := newPod("pod")
if _, err := clientSet.CoreV1().Pods(ns.Name).Create(context.TODO(), pod, metav1.CreateOptions{}); err != nil {
t.Errorf("Failed to create pod: %v", err)
}
pod.Status.Phase = v1.PodRunning
if tc.isPodReady {
addPodConditionReady(pod)
}
if _, err := clientSet.CoreV1().Pods(ns.Name).UpdateStatus(ctx, pod, metav1.UpdateOptions{}); err != nil {
t.Fatal(err)
}
waitToObservePods(t, informers.Core().V1().Pods().Informer(), 1, v1.PodRunning)
pdb := newPDB()
pdb.Spec.UnhealthyPodEvictionPolicy = tc.unhealthyPodEvictionPolicy
if _, err := clientSet.PolicyV1().PodDisruptionBudgets(ns.Name).Create(context.TODO(), pdb, metav1.CreateOptions{}); err != nil {
t.Errorf("Failed to create PodDisruptionBudget: %v", err)
}
if tc.isPodReady {
waitPDBStable(t, clientSet, ns.Name, pdb.Name, 1)
} else {
waitPDB(t, clientSet, ns.Name, pdb.Name, func(pdb *policyv1.PodDisruptionBudget) bool {
return pdb.Status.ExpectedPods == 1
})
}
deleteOption := metav1.DeleteOptions{}
eviction := newV1Eviction(ns.Name, pod.Name, deleteOption)
err := clientSet.PolicyV1().Evictions(ns.Name).Evict(ctx, eviction)
if err != nil {
t.Fatalf("Eviction of pod failed %v", err)
}
waitToObservePods(t, informers.Core().V1().Pods().Informer(), 0, v1.PodRunning)
waitPDBStable(t, clientSet, ns.Name, pdb.Name, 0)
})
}
}
func newPod(podName string) *v1.Pod {
return &v1.Pod{
ObjectMeta: metav1.ObjectMeta{
@ -533,17 +616,24 @@ func waitToObservePods(t *testing.T, podInformer cache.SharedIndexInformer, podN
}
}
func waitPDBStable(t *testing.T, clientSet clientset.Interface, podNum int32, ns, pdbName string) {
func waitPDBStable(t *testing.T, clientSet clientset.Interface, ns, pdbName string, podNum int32) {
waitPDB(t, clientSet, ns, pdbName, func(pdb *policyv1.PodDisruptionBudget) bool {
return pdb.Status.CurrentHealthy == podNum
})
}
func waitPDB(t *testing.T, clientSet clientset.Interface, ns, pdbName string, condition func(budget *policyv1.PodDisruptionBudget) bool) {
if err := wait.PollImmediate(2*time.Second, 60*time.Second, func() (bool, error) {
pdb, err := clientSet.PolicyV1().PodDisruptionBudgets(ns).Get(context.TODO(), pdbName, metav1.GetOptions{})
if err != nil {
return false, err
}
if pdb.Status.CurrentHealthy != podNum {
return false, nil
}
return true, nil
return condition(pdb), nil
}); err != nil {
t.Fatal(err)
}
}
func unhealthyPolicyPtr(unhealthyPodEvictionPolicy policyv1.UnhealthyPodEvictionPolicyType) *policyv1.UnhealthyPodEvictionPolicyType {
return &unhealthyPodEvictionPolicy
}