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Merge pull request #50116 from MrHohn/fix-healthcheck-nodeport-allocation

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Automatic merge from submit-queue

Use nodePortOp for allocating healthCheck nodePort

**What this PR does / why we need it**: Allocate healthCheck nodePort via nodePortOp so that we won't leak port on failure.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #49999

**Special notes for your reviewer**:
/assign @xiangpengzhao @thockin 


**Release note**:

```release-note
NONE
```
This commit is contained in:
Kubernetes Submit Queue 2017-08-15 21:03:38 -07:00 committed by GitHub
commit 1d633b7fdd
1 changed files with 11 additions and 15 deletions
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26
pkg/registry/core/service/rest.go
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@ -124,7 +124,7 @@ func (rs *REST) Create(ctx genericapirequest.Context, obj runtime.Object, includ
// Handle ExternalTraiffc related fields during service creation.
if utilfeature.DefaultFeatureGate.Enabled(features.ExternalTrafficLocalOnly) {
if apiservice.NeedsHealthCheck(service) {
if err := rs.allocateHealthCheckNodePort(service); err != nil {
if err := rs.allocateHealthCheckNodePort(service, nodePortOp); err != nil {
return nil, errors.NewInternalError(err)
}
}
@ -244,7 +244,7 @@ func externalTrafficPolicyUpdate(oldService, service *api.Service) {
// healthCheckNodePortUpdate handles HealthCheckNodePort allocation/release
// and adjusts HealthCheckNodePort during service update if needed.
func (rs *REST) healthCheckNodePortUpdate(oldService, service *api.Service) (bool, error) {
func (rs *REST) healthCheckNodePortUpdate(oldService, service *api.Service, nodePortOp *portallocator.PortAllocationOperation) (bool, error) {
neededHealthCheckNodePort := apiservice.NeedsHealthCheck(oldService)
oldHealthCheckNodePort := oldService.Spec.HealthCheckNodePort
@ -257,7 +257,7 @@ func (rs *REST) healthCheckNodePortUpdate(oldService, service *api.Service) (boo
// Insert health check node port into the service's HealthCheckNodePort field if needed.
case !neededHealthCheckNodePort && needsHealthCheckNodePort:
glog.Infof("Transition to LoadBalancer type service with ExternalTrafficPolicy=Local")
if err := rs.allocateHealthCheckNodePort(service); err != nil {
if err := rs.allocateHealthCheckNodePort(service, nodePortOp); err != nil {
return false, errors.NewInternalError(err)
}
@ -265,12 +265,8 @@ func (rs *REST) healthCheckNodePortUpdate(oldService, service *api.Service) (boo
// Free the existing healthCheckNodePort and clear the HealthCheckNodePort field.
case neededHealthCheckNodePort && !needsHealthCheckNodePort:
glog.Infof("Transition to non LoadBalancer type service or LoadBalancer type service with ExternalTrafficPolicy=Global")
err := rs.serviceNodePorts.Release(int(oldHealthCheckNodePort))
if err != nil {
glog.Warningf("error releasing service health check %s node port %d: %v", service.Name, oldHealthCheckNodePort, err)
return false, errors.NewInternalError(fmt.Errorf("failed to free health check nodePort: %v", err))
}
glog.Infof("Freed health check nodePort: %d", oldHealthCheckNodePort)
glog.V(4).Infof("Releasing healthCheckNodePort: %d", oldHealthCheckNodePort)
nodePortOp.ReleaseDeferred(int(oldHealthCheckNodePort))
// Clear the HealthCheckNodePort field.
service.Spec.HealthCheckNodePort = 0
@ -354,7 +350,7 @@ func (rs *REST) Update(ctx genericapirequest.Context, name string, objInfo rest.
// Handle ExternalTraiffc related updates.
if utilfeature.DefaultFeatureGate.Enabled(features.ExternalTrafficLocalOnly) {
success, err := rs.healthCheckNodePortUpdate(oldService, service)
success, err := rs.healthCheckNodePortUpdate(oldService, service, nodePortOp)
if !success || err != nil {
return nil, false, err
}
@ -474,24 +470,24 @@ func findRequestedNodePort(port int, servicePorts []api.ServicePort) int {
}
// allocateHealthCheckNodePort allocates health check node port to service.
func (rs *REST) allocateHealthCheckNodePort(service *api.Service) error {
func (rs *REST) allocateHealthCheckNodePort(service *api.Service, nodePortOp *portallocator.PortAllocationOperation) error {
healthCheckNodePort := service.Spec.HealthCheckNodePort
if healthCheckNodePort != 0 {
// If the request has a health check nodePort in mind, attempt to reserve it.
err := rs.serviceNodePorts.Allocate(int(healthCheckNodePort))
err := nodePortOp.Allocate(int(healthCheckNodePort))
if err != nil {
return fmt.Errorf("failed to allocate requested HealthCheck NodePort %v: %v",
healthCheckNodePort, err)
}
glog.Infof("Reserved user requested nodePort: %d", healthCheckNodePort)
glog.V(4).Infof("Reserved user requested healthCheckNodePort: %d", healthCheckNodePort)
} else {
// If the request has no health check nodePort specified, allocate any.
healthCheckNodePort, err := rs.serviceNodePorts.AllocateNext()
healthCheckNodePort, err := nodePortOp.AllocateNext()
if err != nil {
return fmt.Errorf("failed to allocate a HealthCheck NodePort %v: %v", healthCheckNodePort, err)
}
service.Spec.HealthCheckNodePort = int32(healthCheckNodePort)
glog.Infof("Reserved allocated nodePort: %d", healthCheckNodePort)
glog.V(4).Infof("Reserved allocated healthCheckNodePort: %d", healthCheckNodePort)
}
return nil
}