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Merge pull request #41116 from lukaszo/ds-updates

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Automatic merge from submit-queue (batch tested with PRs 41116, 41804, 42104, 42111, 42120)

DaemonSet updates - take 2

It implements https://github.com/kubernetes/community/blob/master/contributors/design-proposals/daemonset-update.md
Feature kubernetes/features#124

```release-note
Implement the update feature for DaemonSet.
```

cc @kargakis @janetkuo @mikedanese
This commit is contained in:
Kubernetes Submit Queue
2017-02-27 04:10:23 -08:00
committed by GitHub
parent 70a268528e 7d9c817db0
commit 73c9fd8cec
33 changed files with 3494 additions and 614 deletions
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80
test/e2e/daemon_set.go
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@@ -91,6 +91,7 @@ var _ = framework.KubeDescribe("Daemon set [Serial]", func() {
f = framework.NewDefaultFramework("daemonsets")
image := "gcr.io/google_containers/serve_hostname:v1.4"
redisImage := "gcr.io/google_containers/redis:e2e"
dsName := "daemon-set"
var ns string
@@ -231,6 +232,64 @@ var _ = framework.KubeDescribe("Daemon set [Serial]", func() {
err = wait.Poll(dsRetryPeriod, dsRetryTimeout, checkRunningOnAllNodes(f, label))
Expect(err).NotTo(HaveOccurred(), "error waiting for daemon pod to revive")
})
It("Should not update pod when spec was updated and update strategy is on delete", func() {
label := map[string]string{daemonsetNameLabel: dsName}
framework.Logf("Creating simple daemon set %s", dsName)
_, err := c.Extensions().DaemonSets(ns).Create(newDaemonSet(dsName, image, label))
Expect(err).NotTo(HaveOccurred())
By("Check that daemon pods launch on every node of the cluster.")
Expect(err).NotTo(HaveOccurred())
err = wait.Poll(dsRetryPeriod, dsRetryTimeout, checkRunningOnAllNodes(f, label))
Expect(err).NotTo(HaveOccurred(), "error waiting for daemon pod to start")
By("Update daemon pods image.")
ds, err := c.Extensions().DaemonSets(ns).Get(dsName, metav1.GetOptions{})
ds.Spec.Template.Spec.Containers[0].Image = redisImage
_, err = c.Extensions().DaemonSets(ns).Update(ds)
Expect(err).NotTo(HaveOccurred())
By("Check that demon pods have not set updated image.")
err = wait.Poll(dsRetryPeriod, dsRetryTimeout, checkDaemonPodsImage(c, ns, label, image))
Expect(err).NotTo(HaveOccurred())
By("Check that daemon pods are still running on every node of the cluster.")
Expect(err).NotTo(HaveOccurred())
err = wait.Poll(dsRetryPeriod, dsRetryTimeout, checkRunningOnAllNodes(f, label))
Expect(err).NotTo(HaveOccurred(), "error waiting for daemon pod to start")
})
It("Should update pod when spec was updated and update strategy is RollingUpdate", func() {
label := map[string]string{daemonsetNameLabel: dsName}
framework.Logf("Creating simple daemon set %s", dsName)
_, err := c.Extensions().DaemonSets(ns).Create(newDaemonSet(dsName, image, label))
Expect(err).NotTo(HaveOccurred())
By("Check that daemon pods launch on every node of the cluster.")
Expect(err).NotTo(HaveOccurred())
err = wait.Poll(dsRetryPeriod, dsRetryTimeout, checkRunningOnAllNodes(f, label))
Expect(err).NotTo(HaveOccurred(), "error waiting for daemon pod to start")
By("Update daemon pods image.")
ds, err := c.Extensions().DaemonSets(ns).Get(dsName, metav1.GetOptions{})
ds.Spec.Template.Spec.Containers[0].Image = redisImage
ds.Spec.UpdateStrategy = extensions.DaemonSetUpdateStrategy{Type: extensions.RollingUpdateDaemonSetStrategyType}
_, err = c.Extensions().DaemonSets(ns).Update(ds)
Expect(err).NotTo(HaveOccurred())
By("Check that demon pods have not set updated image.")
err = wait.Poll(dsRetryPeriod, dsRetryTimeout, checkDaemonPodsImage(c, ns, label, redisImage))
Expect(err).NotTo(HaveOccurred())
By("Check that daemon pods are still running on every node of the cluster.")
Expect(err).NotTo(HaveOccurred())
err = wait.Poll(dsRetryPeriod, dsRetryTimeout, checkRunningOnAllNodes(f, label))
Expect(err).NotTo(HaveOccurred(), "error waiting for daemon pod to start")
})
})
func newDaemonSet(dsName, image string, label map[string]string) *extensions.DaemonSet {
@@ -389,3 +448,24 @@ func checkDaemonStatus(f *framework.Framework, dsName string) error {
}
return nil
}
func checkDaemonPodsImage(c clientset.Interface, ns string, selector map[string]string, image string) func() (bool, error) {
return func() (bool, error) {
selector := labels.Set(selector).AsSelector()
options := metav1.ListOptions{LabelSelector: selector.String()}
podList, err := c.Core().Pods(ns).List(options)
if err != nil {
return false, err
}
pods := podList.Items
for _, pod := range pods {
podImage := pod.Spec.Containers[0].Image
if podImage != image || !v1.IsPodReady(&pod) {
framework.Logf("Wrong image for pod: %s. Expected: %s, got: %s. Pod Ready: %t", pod.Name, image, podImage, v1.IsPodReady(&pod))
return false, nil
}
}
return true, nil
}
}