kubernetes/test/e2e_node/container_log_rotation_test.go
Patrick Ohly 2f6c4f5eab e2e: use Ginkgo context
All code must use the context from Ginkgo when doing API calls or polling for a
change, otherwise the code would not return immediately when the test gets
aborted.
2022-12-16 20:14:04 +01:00

109 lines
4.0 KiB
Go

/*
Copyright 2018 The Kubernetes Authors.
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,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package e2enode
import (
"context"
"time"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
kubeletconfig "k8s.io/kubernetes/pkg/kubelet/apis/config"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
kubelogs "k8s.io/kubernetes/pkg/kubelet/logs"
"k8s.io/kubernetes/test/e2e/framework"
e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
admissionapi "k8s.io/pod-security-admission/api"
"github.com/onsi/ginkgo/v2"
"github.com/onsi/gomega"
)
const (
testContainerLogMaxFiles = 3
testContainerLogMaxSize = "40Ki"
rotationPollInterval = 5 * time.Second
rotationEventuallyTimeout = 3 * time.Minute
rotationConsistentlyTimeout = 2 * time.Minute
)
var _ = SIGDescribe("ContainerLogRotation [Slow] [Serial] [Disruptive]", func() {
f := framework.NewDefaultFramework("container-log-rotation-test")
f.NamespacePodSecurityEnforceLevel = admissionapi.LevelPrivileged
ginkgo.Context("when a container generates a lot of log", func() {
tempSetCurrentKubeletConfig(f, func(ctx context.Context, initialConfig *kubeletconfig.KubeletConfiguration) {
initialConfig.ContainerLogMaxFiles = testContainerLogMaxFiles
initialConfig.ContainerLogMaxSize = testContainerLogMaxSize
})
var logRotationPod *v1.Pod
ginkgo.BeforeEach(func(ctx context.Context) {
ginkgo.By("create log container")
pod := &v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: "test-container-log-rotation",
},
Spec: v1.PodSpec{
RestartPolicy: v1.RestartPolicyNever,
Containers: []v1.Container{
{
Name: "log-container",
Image: busyboxImage,
Command: []string{
"sh",
"-c",
// ~12Kb/s. Exceeding 40Kb in 4 seconds. Log rotation period is 10 seconds.
"while true; do echo hello world; sleep 0.001; done;",
},
},
},
},
}
logRotationPod = e2epod.NewPodClient(f).CreateSync(ctx, pod)
ginkgo.DeferCleanup(e2epod.NewPodClient(f).DeleteSync, logRotationPod.Name, metav1.DeleteOptions{}, time.Minute)
})
ginkgo.It("should be rotated and limited to a fixed amount of files", func(ctx context.Context) {
ginkgo.By("get container log path")
framework.ExpectEqual(len(logRotationPod.Status.ContainerStatuses), 1, "log rotation pod should have one container")
id := kubecontainer.ParseContainerID(logRotationPod.Status.ContainerStatuses[0].ContainerID).ID
r, _, err := getCRIClient()
framework.ExpectNoError(err, "should connect to CRI and obtain runtime service clients and image service client")
resp, err := r.ContainerStatus(context.Background(), id, false)
framework.ExpectNoError(err)
logPath := resp.GetStatus().GetLogPath()
ginkgo.By("wait for container log being rotated to max file limit")
gomega.Eventually(ctx, func() (int, error) {
logs, err := kubelogs.GetAllLogs(logPath)
if err != nil {
return 0, err
}
return len(logs), nil
}, rotationEventuallyTimeout, rotationPollInterval).Should(gomega.Equal(testContainerLogMaxFiles), "should eventually rotate to max file limit")
ginkgo.By("make sure container log number won't exceed max file limit")
gomega.Consistently(ctx, func() (int, error) {
logs, err := kubelogs.GetAllLogs(logPath)
if err != nil {
return 0, err
}
return len(logs), nil
}, rotationConsistentlyTimeout, rotationPollInterval).Should(gomega.BeNumerically("<=", testContainerLogMaxFiles), "should never exceed max file limit")
})
})
})