// Create creates a new node api object with the given hostname,
// slave attribute labels and annotations
func Create(
client *client.Client,
hostName string,
slaveAttrLabels,
annotations map[string]string,
) (*api.Node, error) {
n := api.Node{
ObjectMeta: api.ObjectMeta{
Name: hostName,
},
Spec: api.NodeSpec{
ExternalID: hostName,
},
Status: api.NodeStatus{
Phase: api.NodePending,
},
}
n.Labels = mergeMaps(
map[string]string{"kubernetes.io/hostname": hostName},
slaveAttrLabels,
)
n.Annotations = annotations
// try to create
return client.Nodes().Create(&n)
}
// Create creates a new node api object with the given hostname,
// slave attribute labels and annotations
func Create(
client unversionedcore.NodesGetter,
hostName string,
slaveAttrLabels,
annotations map[string]string,
) (*api.Node, error) {
n := api.Node{
ObjectMeta: api.ObjectMeta{
Name: hostName,
},
Spec: api.NodeSpec{
ExternalID: hostName,
},
Status: api.NodeStatus{
Phase: api.NodePending,
// WORKAROUND(sttts): make sure that the Ready condition is the
// first one. The kube-ui v3 depends on this assumption.
// TODO(sttts): remove this workaround when kube-ui v4 is used or we
// merge this with the statusupdate in the controller manager.
Conditions: []api.NodeCondition{
{
Type: api.NodeReady,
Status: api.ConditionTrue,
Reason: slaveReadyReason,
Message: slaveReadyMessage,
LastHeartbeatTime: unversioned.Now(),
},
},
},
}
n.Labels = mergeMaps(
map[string]string{"kubernetes.io/hostname": hostName},
slaveAttrLabels,
)
n.Annotations = annotations
// try to create
return client.Nodes().Create(&n)
}
func testDaemonSets(f *Framework) {
ns := f.Namespace.Name
c := f.Client
simpleDSName := "simple-daemon-set"
image := "gcr.io/google_containers/serve_hostname:1.1"
label := map[string]string{"name": simpleDSName}
retryTimeout := 1 * time.Minute
retryInterval := 5 * time.Second
Logf("Creating simple daemon set %s", simpleDSName)
_, err := c.DaemonSets(ns).Create(&experimental.DaemonSet{
ObjectMeta: api.ObjectMeta{
Name: simpleDSName,
},
Spec: experimental.DaemonSetSpec{
Template: &api.PodTemplateSpec{
ObjectMeta: api.ObjectMeta{
Labels: label,
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: simpleDSName,
Image: image,
Ports: []api.ContainerPort{{ContainerPort: 9376}},
},
},
},
},
},
})
Expect(err).NotTo(HaveOccurred())
defer func() {
Logf("Check that reaper kills all daemon pods for %s", simpleDSName)
dsReaper, err := kubectl.ReaperFor("DaemonSet", c)
Expect(err).NotTo(HaveOccurred())
_, err = dsReaper.Stop(ns, simpleDSName, 0, nil)
Expect(err).NotTo(HaveOccurred())
err = wait.Poll(retryInterval, retryTimeout, checkRunningOnNoNodes(f, label))
Expect(err).NotTo(HaveOccurred(), "error waiting for daemon pod to be reaped")
}()
By("Check that daemon pods launch on every node of the cluster.")
Expect(err).NotTo(HaveOccurred())
err = wait.Poll(retryInterval, retryTimeout, checkRunningOnAllNodes(f, label))
Expect(err).NotTo(HaveOccurred(), "error waiting for daemon pod to start")
By("Stop a daemon pod, check that the daemon pod is revived.")
podClient := c.Pods(ns)
podList, err := podClient.List(labels.Set(label).AsSelector(), fields.Everything())
Expect(err).NotTo(HaveOccurred())
Expect(len(podList.Items)).To(BeNumerically(">", 0))
pod := podList.Items[0]
err = podClient.Delete(pod.Name, nil)
Expect(err).NotTo(HaveOccurred())
err = wait.Poll(retryInterval, retryTimeout, checkRunningOnAllNodes(f, label))
Expect(err).NotTo(HaveOccurred(), "error waiting for daemon pod to revive")
complexDSName := "complex-daemon-set"
complexLabel := map[string]string{"name": complexDSName}
nodeSelector := map[string]string{"color": "blue"}
Logf("Creating daemon with a node selector %s", complexDSName)
_, err = c.DaemonSets(ns).Create(&experimental.DaemonSet{
ObjectMeta: api.ObjectMeta{
Name: complexDSName,
},
Spec: experimental.DaemonSetSpec{
Selector: complexLabel,
Template: &api.PodTemplateSpec{
ObjectMeta: api.ObjectMeta{
Labels: complexLabel,
},
Spec: api.PodSpec{
NodeSelector: nodeSelector,
Containers: []api.Container{
{
Name: complexDSName,
Image: image,
Ports: []api.ContainerPort{{ContainerPort: 9376}},
},
},
},
},
},
})
Expect(err).NotTo(HaveOccurred())
By("Initially, daemon pods should not be running on any nodes.")
err = wait.Poll(retryInterval, retryTimeout, checkRunningOnNoNodes(f, complexLabel))
Expect(err).NotTo(HaveOccurred(), "error waiting for daemon pods to be running on no nodes")
By("Change label of node, check that daemon pod is launched.")
nodeClient := c.Nodes()
nodeList, err := nodeClient.List(labels.Everything(), fields.Everything())
Expect(len(nodeList.Items)).To(BeNumerically(">", 0))
nodeList.Items[0].Labels = nodeSelector
var newNode *api.Node
err = wait.Poll(updateRetryPeriod, updateRetryTimeout, func() (bool, error) {
newNode, err = nodeClient.Update(&nodeList.Items[0])
if err == nil {
return true, err
}
if se, ok := err.(*apierrs.StatusError); ok && se.ErrStatus.Reason == unversioned.StatusReasonConflict {
Logf("failed to update node due to resource version conflict")
return false, nil
}
return false, err
})
Expect(err).NotTo(HaveOccurred())
Expect(len(newNode.Labels)).To(Equal(1))
err = wait.Poll(retryInterval, retryTimeout, checkDaemonPodOnNodes(f, complexLabel, []string{newNode.Name}))
Expect(err).NotTo(HaveOccurred(), "error waiting for daemon pods to be running on new nodes")
By("remove the node selector and wait for daemons to be unscheduled")
newNode, err = nodeClient.Get(newNode.Name)
Expect(err).NotTo(HaveOccurred(), "error getting node")
newNode.Labels = map[string]string{}
err = wait.Poll(updateRetryPeriod, updateRetryTimeout, func() (bool, error) {
newNode, err = nodeClient.Update(newNode)
if err == nil {
return true, err
}
if se, ok := err.(*apierrs.StatusError); ok && se.ErrStatus.Reason == unversioned.StatusReasonConflict {
Logf("failed to update node due to resource version conflict")
return false, nil
}
return false, err
})
Expect(err).NotTo(HaveOccurred())
Expect(wait.Poll(retryInterval, retryTimeout, checkRunningOnNoNodes(f, complexLabel))).
NotTo(HaveOccurred(), "error waiting for daemon pod to not be running on nodes")
By("We should now be able to delete the daemon set.")
Expect(c.DaemonSets(ns).Delete(complexDSName)).NotTo(HaveOccurred())
}