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Deployment: Remove Overlap and SelectorUpdate annotations.

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These are not used anymore since ControllerRef now protects against
fighting between controllers with overlapping selectors.
This commit is contained in:
Anthony Yeh 2017-03-06 11:54:43 -08:00
parent 94b3c216a1
commit cec3899b96
7 changed files with 0 additions and 200 deletions
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4
hack/make-rules/test-cmd-util.sh
View File

@ -2382,10 +2382,6 @@ run_deployment_tests() {
# Check that trying to watch the status of a superseded revision returns an error
! kubectl rollout status deployment/nginx --revision=3
cat hack/testdata/deployment-revision1.yaml | $SED "s/name: nginx$/name: nginx2/" | kubectl create -f - "${kube_flags[@]}"
# Newest deployment should be marked as overlapping
kubectl get deployment nginx2 -o yaml "${kube_flags[@]}" | grep "deployment.kubernetes.io/error-selector-overlapping-with"
# Oldest deployment should not be marked as overlapping
! kubectl get deployment nginx -o yaml "${kube_flags[@]}" | grep "deployment.kubernetes.io/error-selector-overlapping-with"
# Deletion of both deployments should not be blocked
kubectl delete deployment nginx2 "${kube_flags[@]}"
# Clean up

66
pkg/controller/deployment/util/deployment_util.go
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@ -67,14 +67,6 @@ const (
RollbackTemplateUnchanged = "DeploymentRollbackTemplateUnchanged"
// RollbackDone is the done rollback event reason
RollbackDone = "DeploymentRollback"
// OverlapAnnotation marks deployments with overlapping selector with other deployments
// TODO: Delete this annotation when we gracefully handle overlapping selectors.
// See https://github.com/kubernetes/kubernetes/issues/2210
OverlapAnnotation = "deployment.kubernetes.io/error-selector-overlapping-with"
// SelectorUpdateAnnotation marks the last time deployment selector update
// TODO: Delete this annotation when we gracefully handle overlapping selectors.
// See https://github.com/kubernetes/kubernetes/issues/2210
SelectorUpdateAnnotation = "deployment.kubernetes.io/selector-updated-at"
// Reasons for deployment conditions
//
@ -295,8 +287,6 @@ var annotationsToSkip = map[string]bool{
RevisionHistoryAnnotation: true,
DesiredReplicasAnnotation: true,
MaxReplicasAnnotation: true,
OverlapAnnotation: true,
SelectorUpdateAnnotation: true,
}
// skipCopyAnnotation returns true if we should skip copying the annotation with the given annotation key
@ -1020,59 +1010,3 @@ func DeploymentDeepCopy(deployment *extensions.Deployment) (*extensions.Deployme
}
return copied, nil
}
// SelectorUpdatedBefore returns true if the former deployment's selector
// is updated before the latter, false otherwise.
func SelectorUpdatedBefore(d1, d2 *extensions.Deployment) bool {
t1, t2 := LastSelectorUpdate(d1), LastSelectorUpdate(d2)
return t1.Before(t2)
}
// LastSelectorUpdate returns the last time given deployment's selector is updated
func LastSelectorUpdate(d *extensions.Deployment) metav1.Time {
t := d.Annotations[SelectorUpdateAnnotation]
if len(t) > 0 {
parsedTime, err := time.Parse(time.RFC3339, t)
// If failed to parse the time, use creation timestamp instead
if err != nil {
return d.CreationTimestamp
}
return metav1.Time{Time: parsedTime}
}
// If it's never updated, use creation timestamp instead
return d.CreationTimestamp
}
// BySelectorLastUpdateTime sorts a list of deployments by the last update time of their selector,
// first using their creation timestamp and then their names as a tie breaker.
type BySelectorLastUpdateTime []*extensions.Deployment
func (o BySelectorLastUpdateTime) Len() int { return len(o) }
func (o BySelectorLastUpdateTime) Swap(i, j int) { o[i], o[j] = o[j], o[i] }
func (o BySelectorLastUpdateTime) Less(i, j int) bool {
ti, tj := LastSelectorUpdate(o[i]), LastSelectorUpdate(o[j])
if ti.Equal(tj) {
if o[i].CreationTimestamp.Equal(o[j].CreationTimestamp) {
return o[i].Name < o[j].Name
}
return o[i].CreationTimestamp.Before(o[j].CreationTimestamp)
}
return ti.Before(tj)
}
// OverlapsWith returns true when two given deployments are different and overlap with each other
func OverlapsWith(current, other *extensions.Deployment) (bool, error) {
if current.UID == other.UID {
return false, nil
}
currentSelector, err := metav1.LabelSelectorAsSelector(current.Spec.Selector)
if err != nil {
return false, fmt.Errorf("deployment %s/%s has invalid label selector: %v", current.Namespace, current.Name, err)
}
otherSelector, err := metav1.LabelSelectorAsSelector(other.Spec.Selector)
if err != nil {
return false, fmt.Errorf("deployment %s/%s has invalid label selector: %v", other.Namespace, other.Name, err)
}
return (!currentSelector.Empty() && currentSelector.Matches(labels.Set(other.Spec.Template.Labels))) ||
(!otherSelector.Empty() && otherSelector.Matches(labels.Set(current.Spec.Template.Labels))), nil
}

108
pkg/controller/deployment/util/deployment_util_test.go
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@ -1189,111 +1189,3 @@ func TestDeploymentTimedOut(t *testing.T) {
}
}
}
func TestSelectorUpdatedBefore(t *testing.T) {
now := metav1.Now()
later := metav1.Time{Time: now.Add(time.Minute)}
selectorUpdated := metav1.Time{Time: later.Add(time.Minute)}
selectorUpdatedLater := metav1.Time{Time: selectorUpdated.Add(time.Minute)}
tests := []struct {
name string
d1 extensions.Deployment
creationTimestamp1 *metav1.Time
selectorUpdated1 *metav1.Time
d2 extensions.Deployment
creationTimestamp2 *metav1.Time
selectorUpdated2 *metav1.Time
expected bool
}{
{
name: "d1 created before d2",
d1: generateDeployment("foo"),
creationTimestamp1: &now,
d2: generateDeployment("bar"),
creationTimestamp2: &later,
expected: true,
},
{
name: "d1 created after d2",
d1: generateDeployment("foo"),
creationTimestamp1: &later,
d2: generateDeployment("bar"),
creationTimestamp2: &now,
expected: false,
},
{
// Think of the following scenario:
// d1 is created first, d2 is created after and its selector overlaps
// with d1. d2 is marked as overlapping correctly. If d1's selector is
// updated and continues to overlap with the selector of d2 then d1 is
// now marked overlapping and d2 is cleaned up. Proved by the following
// test case. Callers of SelectorUpdatedBefore should first check for
// the existence of the overlapping annotation in any of the two deployments
// prior to comparing their timestamps and as a matter of fact this is
// now handled in `(dc *DeploymentController) handleOverlap`.
name: "d1 created before d2 but updated its selector afterwards",
d1: generateDeployment("foo"),
creationTimestamp1: &now,
selectorUpdated1: &selectorUpdated,
d2: generateDeployment("bar"),
creationTimestamp2: &later,
expected: false,
},
{
name: "d1 selector is older than d2",
d1: generateDeployment("foo"),
selectorUpdated1: &selectorUpdated,
d2: generateDeployment("bar"),
selectorUpdated2: &selectorUpdatedLater,
expected: true,
},
{
name: "d1 selector is younger than d2",
d1: generateDeployment("foo"),
selectorUpdated1: &selectorUpdatedLater,
d2: generateDeployment("bar"),
selectorUpdated2: &selectorUpdated,
expected: false,
},
}
for _, test := range tests {
t.Logf("running scenario %q", test.name)
if test.creationTimestamp1 != nil {
test.d1.CreationTimestamp = *test.creationTimestamp1
}
if test.creationTimestamp2 != nil {
test.d2.CreationTimestamp = *test.creationTimestamp2
}
if test.selectorUpdated1 != nil {
test.d1.Annotations[SelectorUpdateAnnotation] = test.selectorUpdated1.Format(time.RFC3339)
}
if test.selectorUpdated2 != nil {
test.d2.Annotations[SelectorUpdateAnnotation] = test.selectorUpdated2.Format(time.RFC3339)
}
if got := SelectorUpdatedBefore(&test.d1, &test.d2); got != test.expected {
t.Errorf("expected d1 selector to be updated before d2: %t, got: %t", test.expected, got)
}
}
}

5
pkg/kubectl/stop.go
View File

@ -441,11 +441,6 @@ func (reaper *DeploymentReaper) Stop(namespace, name string, timeout time.Durati
return err
}
// Do not cascade deletion for overlapping deployments.
if len(deployment.Annotations[deploymentutil.OverlapAnnotation]) > 0 {
return deployments.Delete(name, nil)
}
// Stop all replica sets.
selector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
if err != nil {

4
pkg/printers/internalversion/describe.go
View File

@ -2439,10 +2439,6 @@ func (dd *DeploymentDescriber) Describe(namespace, name string, describerSetting
}
w.Write(LEVEL_0, "NewReplicaSet:\t%s\n", printReplicaSetsByLabels(newRSs))
}
overlapWith := d.Annotations[deploymentutil.OverlapAnnotation]
if len(overlapWith) > 0 {
w.Write(LEVEL_0, "!!!WARNING!!! This deployment has overlapping label selector with deployment %q and won't behave as expected. Please fix it before continue.\n", overlapWith)
}
if describerSettings.ShowEvents {
events, err := dd.Core().Events(namespace).Search(api.Scheme, d)
if err == nil && events != nil {

1
pkg/registry/extensions/deployment/BUILD
View File

@ -20,7 +20,6 @@ go_library(
"//pkg/api:go_default_library",
"//pkg/apis/extensions:go_default_library",
"//pkg/apis/extensions/validation:go_default_library",
"//pkg/controller/deployment/util:go_default_library",
"//vendor:k8s.io/apimachinery/pkg/apis/meta/internalversion",
"//vendor:k8s.io/apimachinery/pkg/apis/meta/v1",
"//vendor:k8s.io/apimachinery/pkg/fields",

12
pkg/registry/extensions/deployment/strategy.go
View File

@ -19,9 +19,7 @@ package deployment
import (
"fmt"
"reflect"
"time"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
@ -34,7 +32,6 @@ import (
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/apis/extensions"
"k8s.io/kubernetes/pkg/apis/extensions/validation"
"k8s.io/kubernetes/pkg/controller/deployment/util"
)
// deploymentStrategy implements behavior for Deployments.
@ -93,15 +90,6 @@ func (deploymentStrategy) PrepareForUpdate(ctx genericapirequest.Context, obj, o
!reflect.DeepEqual(newDeployment.Annotations, oldDeployment.Annotations) {
newDeployment.Generation = oldDeployment.Generation + 1
}
// Records timestamp on selector updates in annotation
if !reflect.DeepEqual(newDeployment.Spec.Selector, oldDeployment.Spec.Selector) {
if newDeployment.Annotations == nil {
newDeployment.Annotations = make(map[string]string)
}
now := metav1.Now()
newDeployment.Annotations[util.SelectorUpdateAnnotation] = now.Format(time.RFC3339)
}
}
// ValidateUpdate is the default update validation for an end user.