mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-29 16:30:19 +00:00
199 lines
8.7 KiB
Go
199 lines
8.7 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package deployment
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
"time"
|
|
|
|
"github.com/golang/glog"
|
|
|
|
apps "k8s.io/api/apps/v1"
|
|
"k8s.io/api/core/v1"
|
|
"k8s.io/kubernetes/pkg/controller/deployment/util"
|
|
)
|
|
|
|
// syncRolloutStatus updates the status of a deployment during a rollout. There are
|
|
// cases this helper will run that cannot be prevented from the scaling detection,
|
|
// for example a resync of the deployment after it was scaled up. In those cases,
|
|
// we shouldn't try to estimate any progress.
|
|
func (dc *DeploymentController) syncRolloutStatus(allRSs []*apps.ReplicaSet, newRS *apps.ReplicaSet, d *apps.Deployment) error {
|
|
newStatus := calculateStatus(allRSs, newRS, d)
|
|
|
|
// If there is no progressDeadlineSeconds set, remove any Progressing condition.
|
|
if d.Spec.ProgressDeadlineSeconds == nil {
|
|
util.RemoveDeploymentCondition(&newStatus, apps.DeploymentProgressing)
|
|
}
|
|
|
|
// If there is only one replica set that is active then that means we are not running
|
|
// a new rollout and this is a resync where we don't need to estimate any progress.
|
|
// In such a case, we should simply not estimate any progress for this deployment.
|
|
currentCond := util.GetDeploymentCondition(d.Status, apps.DeploymentProgressing)
|
|
isCompleteDeployment := newStatus.Replicas == newStatus.UpdatedReplicas && currentCond != nil && currentCond.Reason == util.NewRSAvailableReason
|
|
// Check for progress only if there is a progress deadline set and the latest rollout
|
|
// hasn't completed yet.
|
|
if d.Spec.ProgressDeadlineSeconds != nil && !isCompleteDeployment {
|
|
switch {
|
|
case util.DeploymentComplete(d, &newStatus):
|
|
// Update the deployment conditions with a message for the new replica set that
|
|
// was successfully deployed. If the condition already exists, we ignore this update.
|
|
msg := fmt.Sprintf("Deployment %q has successfully progressed.", d.Name)
|
|
if newRS != nil {
|
|
msg = fmt.Sprintf("ReplicaSet %q has successfully progressed.", newRS.Name)
|
|
}
|
|
condition := util.NewDeploymentCondition(apps.DeploymentProgressing, v1.ConditionTrue, util.NewRSAvailableReason, msg)
|
|
util.SetDeploymentCondition(&newStatus, *condition)
|
|
|
|
case util.DeploymentProgressing(d, &newStatus):
|
|
// If there is any progress made, continue by not checking if the deployment failed. This
|
|
// behavior emulates the rolling updater progressDeadline check.
|
|
msg := fmt.Sprintf("Deployment %q is progressing.", d.Name)
|
|
if newRS != nil {
|
|
msg = fmt.Sprintf("ReplicaSet %q is progressing.", newRS.Name)
|
|
}
|
|
condition := util.NewDeploymentCondition(apps.DeploymentProgressing, v1.ConditionTrue, util.ReplicaSetUpdatedReason, msg)
|
|
// Update the current Progressing condition or add a new one if it doesn't exist.
|
|
// If a Progressing condition with status=true already exists, we should update
|
|
// everything but lastTransitionTime. SetDeploymentCondition already does that but
|
|
// it also is not updating conditions when the reason of the new condition is the
|
|
// same as the old. The Progressing condition is a special case because we want to
|
|
// update with the same reason and change just lastUpdateTime iff we notice any
|
|
// progress. That's why we handle it here.
|
|
if currentCond != nil {
|
|
if currentCond.Status == v1.ConditionTrue {
|
|
condition.LastTransitionTime = currentCond.LastTransitionTime
|
|
}
|
|
util.RemoveDeploymentCondition(&newStatus, apps.DeploymentProgressing)
|
|
}
|
|
util.SetDeploymentCondition(&newStatus, *condition)
|
|
|
|
case util.DeploymentTimedOut(d, &newStatus):
|
|
// Update the deployment with a timeout condition. If the condition already exists,
|
|
// we ignore this update.
|
|
msg := fmt.Sprintf("Deployment %q has timed out progressing.", d.Name)
|
|
if newRS != nil {
|
|
msg = fmt.Sprintf("ReplicaSet %q has timed out progressing.", newRS.Name)
|
|
}
|
|
condition := util.NewDeploymentCondition(apps.DeploymentProgressing, v1.ConditionFalse, util.TimedOutReason, msg)
|
|
util.SetDeploymentCondition(&newStatus, *condition)
|
|
}
|
|
}
|
|
|
|
// Move failure conditions of all replica sets in deployment conditions. For now,
|
|
// only one failure condition is returned from getReplicaFailures.
|
|
if replicaFailureCond := dc.getReplicaFailures(allRSs, newRS); len(replicaFailureCond) > 0 {
|
|
// There will be only one ReplicaFailure condition on the replica set.
|
|
util.SetDeploymentCondition(&newStatus, replicaFailureCond[0])
|
|
} else {
|
|
util.RemoveDeploymentCondition(&newStatus, apps.DeploymentReplicaFailure)
|
|
}
|
|
|
|
// Do not update if there is nothing new to add.
|
|
if reflect.DeepEqual(d.Status, newStatus) {
|
|
// Requeue the deployment if required.
|
|
dc.requeueStuckDeployment(d, newStatus)
|
|
return nil
|
|
}
|
|
|
|
newDeployment := d
|
|
newDeployment.Status = newStatus
|
|
_, err := dc.client.AppsV1().Deployments(newDeployment.Namespace).UpdateStatus(newDeployment)
|
|
return err
|
|
}
|
|
|
|
// getReplicaFailures will convert replica failure conditions from replica sets
|
|
// to deployment conditions.
|
|
func (dc *DeploymentController) getReplicaFailures(allRSs []*apps.ReplicaSet, newRS *apps.ReplicaSet) []apps.DeploymentCondition {
|
|
var conditions []apps.DeploymentCondition
|
|
if newRS != nil {
|
|
for _, c := range newRS.Status.Conditions {
|
|
if c.Type != apps.ReplicaSetReplicaFailure {
|
|
continue
|
|
}
|
|
conditions = append(conditions, util.ReplicaSetToDeploymentCondition(c))
|
|
}
|
|
}
|
|
|
|
// Return failures for the new replica set over failures from old replica sets.
|
|
if len(conditions) > 0 {
|
|
return conditions
|
|
}
|
|
|
|
for i := range allRSs {
|
|
rs := allRSs[i]
|
|
if rs == nil {
|
|
continue
|
|
}
|
|
|
|
for _, c := range rs.Status.Conditions {
|
|
if c.Type != apps.ReplicaSetReplicaFailure {
|
|
continue
|
|
}
|
|
conditions = append(conditions, util.ReplicaSetToDeploymentCondition(c))
|
|
}
|
|
}
|
|
return conditions
|
|
}
|
|
|
|
// used for unit testing
|
|
var nowFn = func() time.Time { return time.Now() }
|
|
|
|
// requeueStuckDeployment checks whether the provided deployment needs to be synced for a progress
|
|
// check. It returns the time after the deployment will be requeued for the progress check, 0 if it
|
|
// will be requeued now, or -1 if it does not need to be requeued.
|
|
func (dc *DeploymentController) requeueStuckDeployment(d *apps.Deployment, newStatus apps.DeploymentStatus) time.Duration {
|
|
currentCond := util.GetDeploymentCondition(d.Status, apps.DeploymentProgressing)
|
|
// Can't estimate progress if there is no deadline in the spec or progressing condition in the current status.
|
|
if d.Spec.ProgressDeadlineSeconds == nil || currentCond == nil {
|
|
return time.Duration(-1)
|
|
}
|
|
// No need to estimate progress if the rollout is complete or already timed out.
|
|
if util.DeploymentComplete(d, &newStatus) || currentCond.Reason == util.TimedOutReason {
|
|
return time.Duration(-1)
|
|
}
|
|
// If there is no sign of progress at this point then there is a high chance that the
|
|
// deployment is stuck. We should resync this deployment at some point in the future[1]
|
|
// and check whether it has timed out. We definitely need this, otherwise we depend on the
|
|
// controller resync interval. See https://github.com/kubernetes/kubernetes/issues/34458.
|
|
//
|
|
// [1] ProgressingCondition.LastUpdatedTime + progressDeadlineSeconds - time.Now()
|
|
//
|
|
// For example, if a Deployment updated its Progressing condition 3 minutes ago and has a
|
|
// deadline of 10 minutes, it would need to be resynced for a progress check after 7 minutes.
|
|
//
|
|
// lastUpdated: 00:00:00
|
|
// now: 00:03:00
|
|
// progressDeadlineSeconds: 600 (10 minutes)
|
|
//
|
|
// lastUpdated + progressDeadlineSeconds - now => 00:00:00 + 00:10:00 - 00:03:00 => 07:00
|
|
after := currentCond.LastUpdateTime.Time.Add(time.Duration(*d.Spec.ProgressDeadlineSeconds) * time.Second).Sub(nowFn())
|
|
// If the remaining time is less than a second, then requeue the deployment immediately.
|
|
// Make it ratelimited so we stay on the safe side, eventually the Deployment should
|
|
// transition either to a Complete or to a TimedOut condition.
|
|
if after < time.Second {
|
|
glog.V(4).Infof("Queueing up deployment %q for a progress check now", d.Name)
|
|
dc.enqueueRateLimited(d)
|
|
return time.Duration(0)
|
|
}
|
|
glog.V(4).Infof("Queueing up deployment %q for a progress check after %ds", d.Name, int(after.Seconds()))
|
|
// Add a second to avoid milliseconds skew in AddAfter.
|
|
// See https://github.com/kubernetes/kubernetes/issues/39785#issuecomment-279959133 for more info.
|
|
dc.enqueueAfter(d, after+time.Second)
|
|
return after
|
|
}
|