vendor files

vendor/k8s.io/kubernetes/test/e2e/upgrades/sysctl.go

@@ -0,0 +1,141 @@
+/*
+Copyright 2017 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 upgrades
+
+import (
+	"fmt"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	"k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/uuid"
+	v1helper "k8s.io/kubernetes/pkg/apis/core/v1/helper"
+	"k8s.io/kubernetes/pkg/kubelet/sysctl"
+
+	"k8s.io/kubernetes/test/e2e/framework"
+)
+
+// SecretUpgradeTest tests that a pod with sysctls runs before and after an upgrade. During
+// a master upgrade, the exact pod is expected to stay running. A pod with unsafe sysctls is
+// expected to keep failing before and after the upgrade.
+type SysctlUpgradeTest struct {
+	validPod   *v1.Pod
+	invalidPod *v1.Pod
+}
+
+// Setup creates two pods: one with safe sysctls, one with unsafe sysctls. It checks that the former
+// launched and the later is rejected.
+func (t *SysctlUpgradeTest) Setup(f *framework.Framework) {
+	t.validPod = t.verifySafeSysctlWork(f)
+	t.invalidPod = t.verifyUnsafeSysctlsAreRejected(f)
+}
+
+// Test waits for the upgrade to complete, and then verifies that a
+// pod can still consume the ConfigMap.
+func (t *SysctlUpgradeTest) Test(f *framework.Framework, done <-chan struct{}, upgrade UpgradeType) {
+	<-done
+	switch upgrade {
+	case MasterUpgrade:
+		By("Checking the safe sysctl pod keeps running on master upgrade")
+		pod, err := f.ClientSet.CoreV1().Pods(t.validPod.Namespace).Get(t.validPod.Name, metav1.GetOptions{})
+		Expect(err).NotTo(HaveOccurred())
+		Expect(pod.Status.Phase).To(Equal(v1.PodRunning))
+	}
+
+	By("Checking the old unsafe sysctl pod was not suddenly started during an upgrade")
+	pod, err := f.ClientSet.CoreV1().Pods(t.invalidPod.Namespace).Get(t.invalidPod.Name, metav1.GetOptions{})
+	if err != nil && !errors.IsNotFound(err) {
+		Expect(err).NotTo(HaveOccurred())
+	}
+	if err == nil {
+		Expect(pod.Status.Phase).NotTo(Equal(v1.PodRunning))
+	}
+
+	t.verifySafeSysctlWork(f)
+	t.verifyUnsafeSysctlsAreRejected(f)
+}
+
+// Teardown cleans up any remaining resources.
+func (t *SysctlUpgradeTest) Teardown(f *framework.Framework) {
+	// rely on the namespace deletion to clean up everything
+}
+
+func (t *SysctlUpgradeTest) verifySafeSysctlWork(f *framework.Framework) *v1.Pod {
+	By("Creating a pod with safe sysctls")
+	safeSysctl := "net.ipv4.ip_local_port_range"
+	safeSysctlValue := "1024 1042"
+	validPod := sysctlTestPod("valid-sysctls", map[string]string{safeSysctl: safeSysctlValue})
+	validPod = f.PodClient().Create(t.validPod)
+
+	By("Making sure the valid pod launches")
+	ev, err := f.PodClient().WaitForErrorEventOrSuccess(t.validPod)
+	Expect(err).NotTo(HaveOccurred())
+	if ev != nil && ev.Reason == sysctl.UnsupportedReason {
+		framework.Skipf("No sysctl support in Docker <1.12")
+	}
+	f.TestContainerOutput("pod with safe sysctl launched", t.validPod, 0, []string{fmt.Sprintf("%s = %s", safeSysctl, safeSysctlValue)})
+
+	return validPod
+}
+
+func (t *SysctlUpgradeTest) verifyUnsafeSysctlsAreRejected(f *framework.Framework) *v1.Pod {
+	By("Creating a pod with unsafe sysctls")
+	invalidPod := sysctlTestPod("valid-sysctls-"+string(uuid.NewUUID()), map[string]string{
+		"fs.mount-max": "1000000",
+	})
+	invalidPod = f.PodClient().Create(invalidPod)
+
+	By("Making sure the invalid pod failed")
+	ev, err := f.PodClient().WaitForErrorEventOrSuccess(invalidPod)
+	Expect(err).NotTo(HaveOccurred())
+	if ev != nil && ev.Reason == sysctl.UnsupportedReason {
+		framework.Skipf("No sysctl support in Docker <1.12")
+	}
+	Expect(ev.Reason).To(Equal(sysctl.ForbiddenReason))
+
+	return invalidPod
+}
+
+func sysctlTestPod(name string, sysctls map[string]string) *v1.Pod {
+	sysctlList := []v1.Sysctl{}
+	keys := []string{}
+	for k, v := range sysctls {
+		sysctlList = append(sysctlList, v1.Sysctl{Name: k, Value: v})
+		keys = append(keys, k)
+	}
+	return &v1.Pod{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: name,
+			Annotations: map[string]string{
+				v1.SysctlsPodAnnotationKey: v1helper.PodAnnotationsFromSysctls(sysctlList),
+			},
+		},
+		Spec: v1.PodSpec{
+			Containers: []v1.Container{
+				{
+					Name:    "test-container",
+					Image:   "busybox",
+					Command: append([]string{"/bin/sysctl"}, keys...),
+				},
+			},
+			RestartPolicy: v1.RestartPolicyNever,
+		},
+	}
+}