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kill tidb-operator pods randomly in e2e #2125
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| // Copyright 2020 PingCAP, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package operator | ||
|
|
||
| import ( | ||
| "time" | ||
|
|
||
| v1 "k8s.io/api/core/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/util/wait" | ||
| "k8s.io/client-go/kubernetes" | ||
| "k8s.io/kubernetes/test/e2e/framework" | ||
| ) | ||
|
|
||
| // OperatorKillerConfig describes configuration for operator killer. | ||
| type OperatorKillerConfig struct { | ||
| Enabled bool | ||
| // Interval is time between operator failures. | ||
| Interval time.Duration | ||
| // Operator pods will be deleted between [Interval, Interval * (1.0 + JitterFactor)]. | ||
| JitterFactor float64 | ||
| } | ||
|
|
||
| // OperatorKiller deletes pods of tidb-operator to simulate operator failures. | ||
| type OperatorKiller struct { | ||
| config OperatorKillerConfig | ||
| client kubernetes.Interface | ||
| podLister func() ([]v1.Pod, error) | ||
| } | ||
|
|
||
| // NewOperatorKiller creates a new operator killer. | ||
| func NewOperatorKiller(config OperatorKillerConfig, client kubernetes.Interface, podLister func() ([]v1.Pod, error)) *OperatorKiller { | ||
| return &OperatorKiller{ | ||
| config: config, | ||
| client: client, | ||
| podLister: podLister, | ||
| } | ||
| } | ||
|
|
||
| // Run starts OperatorKiller until stopCh is closed. | ||
| func (k *OperatorKiller) Run(stopCh <-chan struct{}) { | ||
| // wait.JitterUntil starts work immediately, so wait first. | ||
| time.Sleep(wait.Jitter(k.config.Interval, k.config.JitterFactor)) | ||
| wait.JitterUntil(func() { | ||
| pods, err := k.podLister() | ||
| if err != nil { | ||
| framework.Logf("failed to list operator pods: %v", err) | ||
| return | ||
| } | ||
| for _, pod := range pods { | ||
| err = k.client.CoreV1().Pods(pod.Namespace).Delete(pod.Name, &metav1.DeleteOptions{}) | ||
| if err != nil { | ||
| framework.Logf("failed to delete pod %s/%s: %v", pod.Namespace, pod.Name, err) | ||
| } else { | ||
| framework.Logf("successfully deleted tidb-operator pod %s/%s", pod.Namespace, pod.Name) | ||
| } | ||
| } | ||
| }, k.config.Interval, k.config.JitterFactor, true, stopCh) | ||
| } |
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this is hard-coded, but I think it's fine in e2e...