/
workers.go
204 lines (182 loc) · 6.27 KB
/
workers.go
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package operators
import (
"bytes"
"fmt"
"text/tabwriter"
"time"
g "github.com/onsi/ginkgo"
o "github.com/onsi/gomega"
"github.com/stretchr/objx"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/dynamic"
e2e "k8s.io/kubernetes/test/e2e/framework"
)
const (
machineAPINamespace = "openshift-machine-api"
nodeLabelSelectorWorker = "node-role.kubernetes.io/worker"
// time after purge of machine to wait for replacement and ready node
// TODO: tighten this further based on node lifecycle controller [appears to be ~5m30s]
machineRepairWait = 7 * time.Minute
)
// machineClient returns a client for machines scoped to the proper namespace
func machineClient(dc dynamic.Interface) dynamic.ResourceInterface {
machineClient := dc.Resource(schema.GroupVersionResource{Group: "machine.openshift.io", Resource: "machines", Version: "v1beta1"})
return machineClient.Namespace(machineAPINamespace)
}
// listMachines list all machines scoped by selector
func listMachines(dc dynamic.Interface, labelSelector string) ([]objx.Map, error) {
mc := machineClient(dc)
obj, err := mc.List(metav1.ListOptions{
LabelSelector: labelSelector,
})
if err != nil {
return nil, err
}
machines := objx.Map(obj.UnstructuredContent())
items := objects(machines.Get("items"))
return items, nil
}
// deleteMachine deletes the named machine
func deleteMachine(dc dynamic.Interface, machineName string) error {
mc := machineClient(dc)
return mc.Delete(machineName, &metav1.DeleteOptions{})
}
// machineName returns the machine name
func machineName(item objx.Map) string {
return item.Get("metadata.name").String()
}
// nodeNames returns the names of nodes
func nodeNames(nodes []corev1.Node) sets.String {
result := sets.NewString()
for i := range nodes {
result.Insert(nodes[i].Name)
}
return result
}
// nodeNames returns the names of nodes
func machineNames(machines []objx.Map) sets.String {
result := sets.NewString()
for i := range machines {
result.Insert(machineName(machines[i]))
}
return result
}
// mapNodeNameToMachine returns a tuple (map node to machine by name, true if a match is found for every node)
func mapNodeNameToMachine(nodes []corev1.Node, machines []objx.Map) (map[string]objx.Map, bool) {
result := map[string]objx.Map{}
for i := range nodes {
for j := range machines {
if nodes[i].Name == nodeNameFromNodeRef(machines[j]) {
result[nodes[i].Name] = machines[j]
break
}
}
}
return result, len(nodes) == len(result)
}
func isNodeReady(node corev1.Node) bool {
for _, c := range node.Status.Conditions {
if c.Type == corev1.NodeReady {
return c.Status == corev1.ConditionTrue
}
}
return false
}
var _ = g.Describe("[Feature:Machines][Disruptive] Managed cluster should", func() {
defer g.GinkgoRecover()
g.It("recover from deleted worker machines", func() {
cfg, err := e2e.LoadConfig()
o.Expect(err).NotTo(o.HaveOccurred())
c, err := e2e.LoadClientset()
o.Expect(err).NotTo(o.HaveOccurred())
dc, err := dynamic.NewForConfig(cfg)
o.Expect(err).NotTo(o.HaveOccurred())
g.By("checking for the openshift machine api operator")
// TODO: skip if platform != aws
skipUnlessMachineAPIOperator(c.CoreV1().Namespaces())
g.By("validating node and machine invariants")
// fetch all machines
allMachines, err := listMachines(dc, "")
if err != nil {
e2e.Failf("unable to fetch worker machines: %v", err)
}
if len(allMachines) == 0 {
e2e.Failf("cluster should have machines")
}
// fetch worker nodes
workerNodes, err := c.CoreV1().Nodes().List(metav1.ListOptions{
LabelSelector: nodeLabelSelectorWorker,
})
o.Expect(err).NotTo(o.HaveOccurred())
if len(workerNodes.Items) == 0 {
e2e.Failf("cluster should have nodes")
}
// map node -> machine
workerNodeToMachine, nodeMatch := mapNodeNameToMachine(workerNodes.Items, allMachines)
if !nodeMatch {
e2e.Failf("unable to map every node to machine. workerNodeToMachine: %v, nodeName: %v", workerNodeToMachine, nodeNames(workerNodes.Items))
}
numMachineWorkers := len(workerNodeToMachine)
g.By("deleting all worker nodes")
for _, machine := range workerNodeToMachine {
machineName := machine.Get("metadata.name").String()
if err := deleteMachine(dc, machineName); err != nil {
e2e.Failf("Unable to delete machine %s/%s with error: %v", machineAPINamespace, machineName, err)
}
}
g.By("waiting for cluster to replace and recover workers")
if pollErr := wait.PollImmediate(3*time.Second, machineRepairWait, func() (bool, error) {
allMachines, err = listMachines(dc, "")
if err != nil {
return false, nil
}
workerNodes, err = c.CoreV1().Nodes().List(metav1.ListOptions{
LabelSelector: nodeLabelSelectorWorker,
})
if err != nil {
e2e.Logf("Waiting for workerNodes to show up, but getting error: %v", err)
return false, nil
}
// map both data sets for easy comparison now
workerNodeToMachine, nodeMatch = mapNodeNameToMachine(workerNodes.Items, allMachines)
if numMachineWorkers != len(workerNodeToMachine) {
e2e.Logf("Waiting for %v machines, but only found: %v", numMachineWorkers, len(workerNodeToMachine))
return false, nil
}
if !nodeMatch {
e2e.Logf("unable to map every node to machine. workerNodeToMachine: %v\n, \tnodeName: %v", workerNodeToMachine, nodeNames(workerNodes.Items))
return false, nil
}
for _, node := range workerNodes.Items {
if !isNodeReady(node) {
e2e.Logf("node %q is not ready: %v", node.Name, node.Status)
return false, nil
}
}
return true, nil
}); pollErr != nil {
buf := &bytes.Buffer{}
w := tabwriter.NewWriter(buf, 0, 4, 1, ' ', 0)
fmt.Fprintf(w, "NAMESPACE\tNAME\tNODE NAME\n")
for _, machine := range workerNodeToMachine {
ns := machine.Get("metadata.namespace").String()
name := machine.Get("metadata.name").String()
nodeName := nodeNameFromNodeRef(machine)
fmt.Fprintf(w, "%s\t%s\t%s\n",
ns,
name,
nodeName,
)
}
w.Flush()
e2e.Logf("Worker Machines:\n%s", buf.String())
e2e.Logf("Worker node to machines:\n%v", workerNodeToMachine)
e2e.Failf("Worker machines were not replaced as expected: %v", pollErr)
}
// TODO: ensure no pods pending
})
})