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upgrade.go
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upgrade.go
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package upgrade
import (
"context"
"fmt"
"math/rand"
"os"
"strconv"
"time"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/util/version"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"k8s.io/client-go/util/retry"
"k8s.io/kubernetes/test/e2e/framework"
"k8s.io/kubernetes/test/e2e/upgrades"
apps "k8s.io/kubernetes/test/e2e/upgrades/apps"
g "github.com/onsi/ginkgo"
configv1 "github.com/openshift/api/config/v1"
configv1client "github.com/openshift/client-go/config/clientset/versioned"
"github.com/openshift/origin/test/e2e/upgrade/service"
"github.com/openshift/origin/test/extended/util/disruption"
"github.com/openshift/origin/test/extended/util/disruption/controlplane"
)
func AllTests() []upgrades.Test {
return []upgrades.Test{
&controlplane.AvailableTest{},
&service.UpgradeTest{},
&upgrades.SecretUpgradeTest{},
&apps.ReplicaSetUpgradeTest{},
&apps.StatefulSetUpgradeTest{},
&apps.DeploymentUpgradeTest{},
&apps.JobUpgradeTest{},
&upgrades.ConfigMapUpgradeTest{},
&apps.DaemonSetUpgradeTest{},
}
}
var (
upgradeToImage string
upgradeTests = []upgrades.Test{}
upgradeAbortAt int
upgradeDisruptRebootPolicy string
)
// upgradeAbortAtRandom is a special value indicating the abort should happen at a random percentage
// between (0,100].
const upgradeAbortAtRandom = -1
// SetTests controls the list of tests to run during an upgrade. See AllTests for the supported
// suite.
func SetTests(tests []upgrades.Test) {
upgradeTests = tests
}
// SetToImage sets the image that will be upgraded to.
func SetToImage(image string) {
upgradeToImage = image
}
func SetUpgradeDisruptReboot(policy string) error {
switch policy {
case "graceful", "force":
upgradeDisruptRebootPolicy = policy
return nil
default:
upgradeDisruptRebootPolicy = ""
return fmt.Errorf("disrupt-reboot must be empty, 'graceful', or 'force'")
}
}
// SetUpgradeAbortAt defines abort behavior during an upgrade. Allowed values are:
//
// * empty string - do not abort
// * integer between 0-100 - once this percentage of operators have updated, rollback to the previous version
//
func SetUpgradeAbortAt(policy string) error {
if len(policy) == 0 {
upgradeAbortAt = 0
}
if policy == "random" {
upgradeAbortAt = upgradeAbortAtRandom
return nil
}
if val, err := strconv.Atoi(policy); err == nil {
if val < 0 || val > 100 {
return fmt.Errorf("abort-at must be empty, set to 'random', or an integer in [0,100], inclusive")
}
if val == 0 {
upgradeAbortAt = 1
} else {
upgradeAbortAt = val
}
return nil
}
return fmt.Errorf("abort-at must be empty, set to 'random', or an integer in [0,100], inclusive")
}
var _ = g.Describe("[Disruptive]", func() {
f := framework.NewDefaultFramework("cluster-upgrade")
f.SkipNamespaceCreation = true
f.SkipPrivilegedPSPBinding = true
g.Describe("Cluster upgrade", func() {
g.It("should maintain a functioning cluster [Feature:ClusterUpgrade]", func() {
config, err := framework.LoadConfig()
framework.ExpectNoError(err)
client := configv1client.NewForConfigOrDie(config)
dynamicClient := dynamic.NewForConfigOrDie(config)
upgCtx, err := getUpgradeContext(client, "", upgradeToImage)
framework.ExpectNoError(err, "determining what to upgrade to version=%s image=%s", "", upgradeToImage)
disruption.Run(
"Cluster upgrade",
"upgrade",
disruption.TestData{
UpgradeType: upgrades.ClusterUpgrade,
UpgradeContext: *upgCtx,
},
upgradeTests,
func() {
framework.ExpectNoError(clusterUpgrade(client, dynamicClient, config, upgCtx.Versions[1]), "during upgrade")
},
)
})
})
})
func latestHistory(history []configv1.UpdateHistory) *configv1.UpdateHistory {
if len(history) > 0 {
return &history[0]
}
return nil
}
func latestCompleted(history []configv1.UpdateHistory) (*configv1.Update, bool) {
for _, version := range history {
if version.State == configv1.CompletedUpdate {
return &configv1.Update{Version: version.Version, Image: version.Image}, true
}
}
return nil, false
}
func getUpgradeContext(c configv1client.Interface, upgradeTarget, upgradeImage string) (*upgrades.UpgradeContext, error) {
if upgradeTarget == "[pause]" {
return &upgrades.UpgradeContext{
Versions: []upgrades.VersionContext{
{Version: *version.MustParseSemantic("0.0.1"), NodeImage: "[pause]"},
{Version: *version.MustParseSemantic("0.0.2"), NodeImage: "[pause]"},
},
}, nil
}
cv, err := c.ConfigV1().ClusterVersions().Get("version", metav1.GetOptions{})
if err != nil {
return nil, err
}
if cv.Spec.DesiredUpdate != nil {
if cv.Status.ObservedGeneration != cv.Generation {
return nil, fmt.Errorf("cluster may be in the process of upgrading, cannot start a test")
}
if len(cv.Status.History) > 0 && cv.Status.History[0].State != configv1.CompletedUpdate {
return nil, fmt.Errorf("cluster is already being upgraded, cannot start a test: %s", versionString(*cv.Spec.DesiredUpdate))
}
}
if c := findCondition(cv.Status.Conditions, configv1.OperatorDegraded); c != nil && c.Status == configv1.ConditionTrue {
return nil, fmt.Errorf("cluster is reporting a degraded condition, cannot continue: %v", c.Message)
}
if c := findCondition(cv.Status.Conditions, configv1.ClusterStatusConditionType("Failing")); c != nil && c.Status == configv1.ConditionTrue {
return nil, fmt.Errorf("cluster is reporting a failing condition, cannot continue: %v", c.Message)
}
if c := findCondition(cv.Status.Conditions, configv1.OperatorProgressing); c == nil || c.Status != configv1.ConditionFalse {
return nil, fmt.Errorf("cluster must be reporting a progressing=false condition, cannot continue: %#v", c)
}
if c := findCondition(cv.Status.Conditions, configv1.OperatorAvailable); c == nil || c.Status != configv1.ConditionTrue {
return nil, fmt.Errorf("cluster must be reporting an available=true condition, cannot continue: %#v", c)
}
current, ok := latestCompleted(cv.Status.History)
if !ok {
return nil, fmt.Errorf("cluster has not rolled out a version yet, must wait until that is complete")
}
curVer, err := version.ParseSemantic(current.Version)
if err != nil {
return nil, err
}
upgCtx := &upgrades.UpgradeContext{
Versions: []upgrades.VersionContext{
{
Version: *curVer,
NodeImage: current.Image,
},
},
}
if len(upgradeTarget) == 0 && len(upgradeImage) == 0 {
return upgCtx, nil
}
if (len(upgradeImage) > 0 && upgradeImage == current.Image) || (len(upgradeTarget) > 0 && upgradeTarget == current.Version) {
return nil, fmt.Errorf("cluster is already at version %s", versionString(*current))
}
var next upgrades.VersionContext
next.NodeImage = upgradeImage
if len(upgradeTarget) > 0 {
nextVer, err := version.ParseSemantic(upgradeTarget)
if err != nil {
return nil, err
}
next.Version = *nextVer
}
upgCtx.Versions = append(upgCtx.Versions, next)
return upgCtx, nil
}
var errControlledAbort = fmt.Errorf("beginning abort")
func clusterUpgrade(c configv1client.Interface, dc dynamic.Interface, config *rest.Config, version upgrades.VersionContext) error {
fmt.Fprintf(os.Stderr, "\n\n\n")
defer func() { fmt.Fprintf(os.Stderr, "\n\n\n") }()
if version.NodeImage == "[pause]" {
framework.Logf("Running a dry-run upgrade test")
wait.PollImmediate(10*time.Second, 5*time.Minute, func() (bool, error) {
framework.Logf("Waiting ...")
return false, nil
})
return nil
}
kubeClient := kubernetes.NewForConfigOrDie(config)
maximumDuration := 75 * time.Minute
framework.Logf("Starting upgrade to version=%s image=%s", version.Version.String(), version.NodeImage)
// decide whether to abort at a percent
abortAt := upgradeAbortAt
switch abortAt {
case 0:
// no abort
case upgradeAbortAtRandom:
abortAt = int(rand.Int31n(100) + 1)
maximumDuration *= 2
framework.Logf("Upgrade will be aborted and the cluster will roll back to the current version after %d%% of operators have upgraded (picked randomly)", abortAt)
default:
maximumDuration *= 2
framework.Logf("Upgrade will be aborted and the cluster will roll back to the current version after %d%% of operators have upgraded", upgradeAbortAt)
}
// trigger the update
cv, err := c.ConfigV1().ClusterVersions().Get("version", metav1.GetOptions{})
if err != nil {
return err
}
oldImage := cv.Status.Desired.Image
oldVersion := cv.Status.Desired.Version
desired := configv1.Update{
Version: version.Version.String(),
Image: version.NodeImage,
Force: true,
}
cv.Spec.DesiredUpdate = &desired
updated, err := c.ConfigV1().ClusterVersions().Update(cv)
if err != nil {
return err
}
monitor := versionMonitor{
client: c,
oldVersion: oldVersion,
}
// wait until the cluster acknowledges the update
if err := wait.PollImmediate(5*time.Second, 2*time.Minute, func() (bool, error) {
cv, _, err := monitor.Check(updated.Generation, desired)
if err != nil || cv == nil {
return false, err
}
return cv.Status.ObservedGeneration >= updated.Generation, nil
}); err != nil {
monitor.Output()
return fmt.Errorf("Cluster did not acknowledge request to upgrade in a reasonable time: %v", err)
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
go monitor.Disrupt(ctx, kubeClient, upgradeDisruptRebootPolicy)
// observe the upgrade, taking action as necessary
framework.Logf("Cluster version operator acknowledged upgrade request")
aborted := false
var lastMessage string
if err := wait.PollImmediate(10*time.Second, maximumDuration, func() (bool, error) {
cv, msg, err := monitor.Check(updated.Generation, desired)
if msg != "" {
lastMessage = msg
}
if err != nil || cv == nil {
return false, err
}
if !aborted && monitor.ShouldUpgradeAbort(abortAt) {
framework.Logf("Instructing the cluster to return to %s / %s", oldVersion, oldImage)
desired = configv1.Update{
Image: oldImage,
Force: true,
}
if err := retry.RetryOnConflict(wait.Backoff{Steps: 10, Duration: time.Second}, func() error {
cv, err := c.ConfigV1().ClusterVersions().Get("version", metav1.GetOptions{})
if err != nil {
return err
}
cv.Spec.DesiredUpdate = &desired
cv, err = c.ConfigV1().ClusterVersions().Update(cv)
if err == nil {
updated = cv
}
return err
}); err != nil {
return false, err
}
aborted = true
return false, nil
}
return monitor.Reached(cv, desired)
}); err != nil {
monitor.Output()
if lastMessage != "" {
return fmt.Errorf("Cluster did not complete upgrade: %v: %s", err, lastMessage)
}
return fmt.Errorf("Cluster did not complete upgrade: %v", err)
}
framework.Logf("Completed upgrade to %s", versionString(desired))
framework.Logf("Waiting on pools to be upgraded")
if err := wait.PollImmediate(10*time.Second, 30*time.Minute, func() (bool, error) {
mcps := dc.Resource(schema.GroupVersionResource{
Group: "machineconfiguration.openshift.io",
Version: "v1",
Resource: "machineconfigpools",
})
pools, err := mcps.List(metav1.ListOptions{})
if err != nil {
framework.Logf("error getting pools %v", err)
return false, nil
}
allUpdated := true
for _, p := range pools.Items {
updated, err := IsPoolUpdated(mcps, p.GetName())
if err != nil {
framework.Logf("error checking pool %s: %v", p.GetName(), err)
return false, nil
}
allUpdated = allUpdated && updated
}
return allUpdated, nil
}); err != nil {
return fmt.Errorf("Pools did not complete upgrade: %v", err)
}
framework.Logf("All pools completed upgrade")
return nil
}
// TODO(runcom): drop this when MCO types are in openshift/api and we can use the typed client directly
func IsPoolUpdated(dc dynamic.NamespaceableResourceInterface, name string) (bool, error) {
pool, err := dc.Get(name, metav1.GetOptions{})
if err != nil {
framework.Logf("error getting pool %s: %v", name, err)
return false, nil
}
conditions, found, err := unstructured.NestedFieldNoCopy(pool.Object, "status", "conditions")
if err != nil || !found {
return false, nil
}
original, ok := conditions.([]interface{})
if !ok {
return false, nil
}
var updated, updating, degraded bool
for _, obj := range original {
o, ok := obj.(map[string]interface{})
if !ok {
return false, nil
}
t, found, err := unstructured.NestedString(o, "type")
if err != nil || !found {
return false, nil
}
s, found, err := unstructured.NestedString(o, "status")
if err != nil || !found {
return false, nil
}
if t == "Updated" && s == "True" {
updated = true
}
if t == "Updating" && s == "True" {
updating = true
}
if t == "Degraded" && s == "True" {
degraded = true
}
}
if updated && !updating && !degraded {
return true, nil
}
framework.Logf("Pool %s is still reporting (Updated: %v, Updating: %v, Degraded: %v)", name, updated, updating, degraded)
return false, nil
}