healthchecks

package
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 Go to latest Published: Mar 16, 2018 License: Apache-2.0 Imports: 8 Imported by: 10

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Index

Constants

View Source 
const (
	// These values set a low health threshold and a high failure threshold.
	// We're just trying to detect if the node networking is
	// borked, service level outages will get detected sooner
	// by kube-proxy.
	// DefaultHealthCheckInterval defines how frequently a probe runs with IG backends
	DefaultHealthCheckInterval = 60 * time.Second
	// DefaultNEGHealthCheckInterval defines how frequently a probe runs with NEG backends
	DefaultNEGHealthCheckInterval = 15 * time.Second
	// DefaultHealthyThreshold defines the threshold of success probes that declare a backend "healthy"
	DefaultHealthyThreshold = 1
	// DefaultUnhealthyThreshold defines the threshold of failure probes that declare a instance "unhealthy"
	DefaultUnhealthyThreshold = 10
	// DefaultNEGUnhealthyThreshold defines the threshold of failure probes that declare a network endpoint "unhealthy"
	// In NEG mode, cloud loadbalancer health check request will no longer be loadbalanced by kube-proxy(iptables).
	// Instead, health checks can reach endpoints directly. Hence the loadbalancer health check can get a clear signal
	// of endpoint health status. As a result, we are able to tune down the unhealthy threshold to 2.
	DefaultNEGUnhealthyThreshold = 2
	// DefaultTimeout defines the timeout of each probe for IG
	DefaultTimeout = 60 * time.Second
	// DefaultTimeout defines the timeout of each probe for NEG
	DefaultNEGTimeout = 15 * time.Second

	// This is a constant for GCE API.
	// USE_SERVING_PORT: For NetworkEndpointGroup, the port specified for
	// each network endpoint is used for health checking. For other
	// backends, the port or named port specified in the Backend Service is
	// used for health checking.
	UseServingPortSpecification = "USE_SERVING_PORT"
)

Variables

This section is empty.

Functions

This section is empty.

Types

type FakeHealthCheckProvider 

type FakeHealthCheckProvider struct {
	// contains filtered or unexported fields
}

FakeHealthCheckProvider fakes out health checks.

func NewFakeHealthCheckProvider 

func NewFakeHealthCheckProvider() *FakeHealthCheckProvider

NewFakeHealthCheckProvider returns a new FakeHealthChecks.

func (*FakeHealthCheckProvider) CreateAlphaHealthCheck 

func (f *FakeHealthCheckProvider) CreateAlphaHealthCheck(hc *computealpha.HealthCheck) error

CreateHealthCheck fakes out http health check creation.

func (*FakeHealthCheckProvider) CreateHealthCheck 

func (f *FakeHealthCheckProvider) CreateHealthCheck(hc *compute.HealthCheck) error

CreateHealthCheck fakes out http health check creation.

func (*FakeHealthCheckProvider) CreateHttpHealthCheck 

func (f *FakeHealthCheckProvider) CreateHttpHealthCheck(hc *compute.HttpHealthCheck) error

CreateHttpHealthCheck fakes out http health check creation.

func (*FakeHealthCheckProvider) DeleteHealthCheck 

func (f *FakeHealthCheckProvider) DeleteHealthCheck(name string) error

DeleteHealthCheck fakes out deleting a http health check.

func (*FakeHealthCheckProvider) DeleteHttpHealthCheck 

func (f *FakeHealthCheckProvider) DeleteHttpHealthCheck(name string) error

DeleteHttpHealthCheck fakes out deleting a http health check.

func (*FakeHealthCheckProvider) GetAlphaHealthCheck 

func (f *FakeHealthCheckProvider) GetAlphaHealthCheck(name string) (*computealpha.HealthCheck, error)

GetHealthCheck fakes out getting a http health check from the cloud.

func (*FakeHealthCheckProvider) GetHealthCheck 

func (f *FakeHealthCheckProvider) GetHealthCheck(name string) (*compute.HealthCheck, error)

GetHealthCheck fakes out getting a http health check from the cloud.

func (*FakeHealthCheckProvider) GetHttpHealthCheck 

func (f *FakeHealthCheckProvider) GetHttpHealthCheck(name string) (*compute.HttpHealthCheck, error)

GetHttpHealthCheck fakes out getting a http health check from the cloud.

func (*FakeHealthCheckProvider) UpdateAlphaHealthCheck 

func (f *FakeHealthCheckProvider) UpdateAlphaHealthCheck(hc *computealpha.HealthCheck) error

func (*FakeHealthCheckProvider) UpdateHealthCheck 

func (f *FakeHealthCheckProvider) UpdateHealthCheck(hc *compute.HealthCheck) error

UpdateHealthCheck sends the given health check as an update.

func (*FakeHealthCheckProvider) UpdateHttpHealthCheck 

func (f *FakeHealthCheckProvider) UpdateHttpHealthCheck(hc *compute.HttpHealthCheck) error

UpdateHttpHealthCheck sends the given health check as an update.

type HealthCheck 

type HealthCheck struct {
	computealpha.HTTPHealthCheck
	computealpha.HealthCheck
	ForNEG bool
}

HealthCheck embeds two types - the generic healthcheck compute.HealthCheck and the HTTP settings compute.HTTPHealthCheck. By embedding both, consumers can modify all relevant settings (HTTP specific and HealthCheck generic) regardless of Type Consumers should call .Out() func to generate a compute.HealthCheck with the proper child struct (.HttpHealthCheck, .HttpshealthCheck, etc).

func DefaultHealthCheck 

func DefaultHealthCheck(port int64, protocol annotations.AppProtocol) *HealthCheck

DefaultHealthCheck simply returns the default health check.

func DefaultNEGHealthCheck 

func DefaultNEGHealthCheck(protocol annotations.AppProtocol) *HealthCheck

DefaultHealthCheck simply returns the default health check.

func NewHealthCheck 

func NewHealthCheck(hc *computealpha.HealthCheck) *HealthCheck

NewHealthCheck creates a HealthCheck which abstracts nested structs away

func (*HealthCheck) Protocol 

func (hc *HealthCheck) Protocol() annotations.AppProtocol

Protocol returns the type cased to AppProtocol

func (*HealthCheck) ToAlphaComputeHealthCheck 

func (hc *HealthCheck) ToAlphaComputeHealthCheck() *computealpha.HealthCheck

ToComputeHealthCheck returns a valid compute.HealthCheck object

func (*HealthCheck) ToComputeHealthCheck 

func (hc *HealthCheck) ToComputeHealthCheck() (*compute.HealthCheck, error)

ToComputeHealthCheck returns a valid compute.HealthCheck object

type HealthCheckProvider 

type HealthCheckProvider interface {
	CreateHttpHealthCheck(hc *compute.HttpHealthCheck) error
	UpdateHttpHealthCheck(hc *compute.HttpHealthCheck) error
	DeleteHttpHealthCheck(name string) error
	GetHttpHealthCheck(name string) (*compute.HttpHealthCheck, error)

	CreateAlphaHealthCheck(hc *computealpha.HealthCheck) error
	CreateHealthCheck(hc *compute.HealthCheck) error
	UpdateAlphaHealthCheck(hc *computealpha.HealthCheck) error
	UpdateHealthCheck(hc *compute.HealthCheck) error
	DeleteHealthCheck(name string) error
	GetAlphaHealthCheck(name string) (*computealpha.HealthCheck, error)
	GetHealthCheck(name string) (*compute.HealthCheck, error)
}

HealthCheckProvider is an interface to manage a single GCE health check.

type HealthChecker 

type HealthChecker interface {
	New(port int64, protocol annotations.AppProtocol, enableNEG bool) *HealthCheck
	Sync(hc *HealthCheck) (string, error)
	Delete(port int64) error
	Get(port int64, alpha bool) (*HealthCheck, error)
	GetLegacy(port int64) (*compute.HttpHealthCheck, error)
	DeleteLegacy(port int64) error
}

HealthChecker is an interface to manage cloud HTTPHealthChecks.

func NewHealthChecker 

func NewHealthChecker(cloud HealthCheckProvider, defaultHealthCheckPath string, namer *utils.Namer) HealthChecker

NewHealthChecker creates a new health checker. cloud: the cloud object implementing SingleHealthCheck. defaultHealthCheckPath: is the HTTP path to use for health checks.

type HealthChecks 

type HealthChecks struct {
	// contains filtered or unexported fields
}

HealthChecks manages health checks.

func (*HealthChecks) Delete 

func (h *HealthChecks) Delete(port int64) error

Delete deletes the health check by port.

func (*HealthChecks) DeleteLegacy 

func (h *HealthChecks) DeleteLegacy(port int64) error

DeleteLegacy deletes legacy HTTP health checks

func (*HealthChecks) Get 

func (h *HealthChecks) Get(port int64, alpha bool) (*HealthCheck, error)

Get returns the health check by port

func (*HealthChecks) GetLegacy 

func (h *HealthChecks) GetLegacy(port int64) (*compute.HttpHealthCheck, error)

GetLegacy deletes legacy HTTP health checks

func (*HealthChecks) New 

func (h *HealthChecks) New(port int64, protocol annotations.AppProtocol, enableNEG bool) *HealthCheck

New returns a *HealthCheck with default settings and specified port/protocol

func (*HealthChecks) Sync 

func (h *HealthChecks) Sync(hc *HealthCheck) (string, error)

Sync retrieves a health check based on port, checks type and settings and updates/creates if necessary. Sync is only called by the backends.Add func - it's not a pool like other resources.

Source Files

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