ad7b9b56f5
Signed-off-by: Sohan Kunkerkar <sohank2602@gmail.com> Co-authored-by: Peter Hunt <pehunt@redhat.com>
114 lines
4.3 KiB
Go
114 lines
4.3 KiB
Go
/*
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Copyright 2023 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 e2enode
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import (
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"context"
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"os"
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"path/filepath"
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"time"
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"github.com/onsi/ginkgo/v2"
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"github.com/onsi/gomega"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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kubeletconfig "k8s.io/kubernetes/pkg/kubelet/apis/config"
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"k8s.io/kubernetes/test/e2e/framework"
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"k8s.io/kubernetes/test/e2e/nodefeature"
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)
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var _ = SIGDescribe("Kubelet Config", framework.WithSlow(), framework.WithSerial(), framework.WithDisruptive(), nodefeature.KubeletConfigDropInDir, func() {
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f := framework.NewDefaultFramework("kubelet-config-drop-in-dir-test")
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ginkgo.Context("when merging drop-in configs", func() {
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var oldcfg *kubeletconfig.KubeletConfiguration
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ginkgo.BeforeEach(func(ctx context.Context) {
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var err error
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oldcfg, err = getCurrentKubeletConfig(ctx)
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framework.ExpectNoError(err)
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})
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ginkgo.AfterEach(func(ctx context.Context) {
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files, err := filepath.Glob(filepath.Join(framework.TestContext.KubeletConfigDropinDir, "*"+".conf"))
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framework.ExpectNoError(err)
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for _, file := range files {
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err := os.Remove(file)
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framework.ExpectNoError(err)
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}
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updateKubeletConfig(ctx, f, oldcfg, true)
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})
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ginkgo.It("should merge kubelet configs correctly", func(ctx context.Context) {
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// Get the initial kubelet configuration
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initialConfig, err := getCurrentKubeletConfig(ctx)
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framework.ExpectNoError(err)
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ginkgo.By("Stopping the kubelet")
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restartKubelet := stopKubelet()
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// wait until the kubelet health check will fail
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gomega.Eventually(ctx, func() bool {
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return kubeletHealthCheck(kubeletHealthCheckURL)
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}, f.Timeouts.PodStart, f.Timeouts.Poll).Should(gomega.BeFalse())
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configDir := framework.TestContext.KubeletConfigDropinDir
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contents := []byte(`apiVersion: kubelet.config.k8s.io/v1beta1
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kind: KubeletConfiguration
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port: 10255
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readOnlyPort: 10257
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clusterDNS:
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- 192.168.1.10
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systemReserved:
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memory: 1Gi`)
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framework.ExpectNoError(os.WriteFile(filepath.Join(configDir, "10-kubelet.conf"), contents, 0755))
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contents = []byte(`apiVersion: kubelet.config.k8s.io/v1beta1
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kind: KubeletConfiguration
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clusterDNS:
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- 192.168.1.1
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- 192.168.1.5
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- 192.168.1.8
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port: 8080
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cpuManagerReconcilePeriod: 0s
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systemReserved:
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memory: 2Gi`)
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framework.ExpectNoError(os.WriteFile(filepath.Join(configDir, "20-kubelet.conf"), contents, 0755))
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ginkgo.By("Restarting the kubelet")
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restartKubelet()
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// wait until the kubelet health check will succeed
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gomega.Eventually(ctx, func() bool {
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return kubeletHealthCheck(kubeletHealthCheckURL)
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}, f.Timeouts.PodStart, f.Timeouts.Poll).Should(gomega.BeTrue())
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mergedConfig, err := getCurrentKubeletConfig(ctx)
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framework.ExpectNoError(err)
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// Replace specific fields in the initial configuration with expectedConfig values
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initialConfig.Port = int32(8080) // not overridden by second file, should be retained.
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initialConfig.ReadOnlyPort = int32(10257) // overridden by second file.
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initialConfig.SystemReserved = map[string]string{ // overridden by map in second file.
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"memory": "2Gi",
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}
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initialConfig.ClusterDNS = []string{"192.168.1.1", "192.168.1.5", "192.168.1.8"} // overridden by slice in second file.
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// This value was explicitly set in the drop-in, make sure it is retained
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initialConfig.CPUManagerReconcilePeriod = metav1.Duration{Duration: time.Duration(0)}
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// Meanwhile, this value was not explicitly set, but could have been overridden by a "default" of 0 for the type.
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// Ensure the true default persists.
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initialConfig.CPUCFSQuotaPeriod = metav1.Duration{Duration: time.Duration(100000000)}
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// Compare the expected config with the merged config
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gomega.Expect(initialConfig).To(gomega.BeComparableTo(mergedConfig), "Merged kubelet config does not match the expected configuration.")
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})
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})
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})
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