REST Resource: healthChecks

Resource: HealthCheck

Represents a Health Check resource.

Google Compute Engine has two Health Check resources:

Internal HTTP(S) load balancers use regional health checks. All other types of GCP load balancers and managed instance group auto-healing use global health checks. For more information, read Health Check Concepts.

To perform health checks on network load balancers, you must use either httpHealthChecks or httpsHealthChecks.

JSON representation 
{
  "id": string,
  "creationTimestamp": string,
  "name": string,
  "description": string,
  "checkIntervalSec": integer,
  "timeoutSec": integer,
  "unhealthyThreshold": integer,
  "healthyThreshold": integer,
  "type": enum,
  "tcpHealthCheck": {
    "port": integer,
    "portName": string,
    "portSpecification": enum,
    "request": string,
    "response": string,
    "proxyHeader": enum
  },
  "sslHealthCheck": {
    "port": integer,
    "portName": string,
    "portSpecification": enum,
    "request": string,
    "response": string,
    "proxyHeader": enum
  },
  "httpHealthCheck": {
    "port": integer,
    "portName": string,
    "portSpecification": enum,
    "host": string,
    "requestPath": string,
    "proxyHeader": enum,
    "response": string
  },
  "httpsHealthCheck": {
    "port": integer,
    "portName": string,
    "portSpecification": enum,
    "host": string,
    "requestPath": string,
    "proxyHeader": enum,
    "response": string
  },
  "http2HealthCheck": {
    "port": integer,
    "portName": string,
    "portSpecification": enum,
    "host": string,
    "requestPath": string,
    "proxyHeader": enum,
    "response": string
  },
  "selfLink": string,
  "region": string,
  "kind": string
}
Fields
id

string (fixed64 format)

[Output Only] The unique identifier for the resource. This identifier is defined by the server.
creationTimestamp

string

[Output Only] Creation timestamp in 3339 text format.
name

string

Name of the resource. Provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
description

string

An optional description of this resource. Provide this property when you create the resource.
checkIntervalSec

integer

How often (in seconds) to send a health check. The default value is 5 seconds.
timeoutSec

integer

How long (in seconds) to wait before claiming failure. The default value is 5 seconds. It is invalid for timeoutSec to have greater value than checkIntervalSec.
unhealthyThreshold

integer

A so-far healthy instance will be marked unhealthy after this many consecutive failures. The default value is 2.
healthyThreshold

integer

A so-far unhealthy instance will be marked healthy after this many consecutive successes. The default value is 2.
type

enum

Specifies the type of the healthCheck, either TCP, SSL, HTTP, HTTPS or HTTP2. If not specified, the default is TCP. Exactly one of the protocol-specific health check field must be specified, which must match type field.
tcpHealthCheck

object
tcpHealthCheck.port

integer

The TCP port number for the health check request. The default value is 80. Valid values are 1 through 65535.
tcpHealthCheck.portName

string

Port name as defined in InstanceGroup#NamedPort#name. If both port and portName are defined, port takes precedence.
tcpHealthCheck.portSpecification

enum

Specifies how port is selected for health checking, can be one of following values:
USE_FIXED_PORT: The port number in port is used for health checking.
USE_NAMED_PORT: The portName is used for health checking.
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.

If not specified, TCP health check follows behavior specified in port and portName fields.
tcpHealthCheck.request

string

The application data to send once the TCP connection has been established (default value is empty). If both request and response are empty, the connection establishment alone will indicate health. The request data can only be ASCII.
tcpHealthCheck.response

string

The bytes to match against the beginning of the response data. If left empty (the default value), any response will indicate health. The response data can only be ASCII.
tcpHealthCheck.proxyHeader

enum

Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
sslHealthCheck

object
sslHealthCheck.port

integer

The TCP port number for the health check request. The default value is 443. Valid values are 1 through 65535.
sslHealthCheck.portName

string

Port name as defined in InstanceGroup#NamedPort#name. If both port and portName are defined, port takes precedence.
sslHealthCheck.portSpecification

enum

Specifies how port is selected for health checking, can be one of following values:
USE_FIXED_PORT: The port number in port is used for health checking.
USE_NAMED_PORT: The portName is used for health checking.
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.

If not specified, SSL health check follows behavior specified in port and portName fields.
sslHealthCheck.request

string

The application data to send once the SSL connection has been established (default value is empty). If both request and response are empty, the connection establishment alone will indicate health. The request data can only be ASCII.
sslHealthCheck.response

string

The bytes to match against the beginning of the response data. If left empty (the default value), any response will indicate health. The response data can only be ASCII.
sslHealthCheck.proxyHeader

enum

Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
httpHealthCheck

object
httpHealthCheck.port

integer

The TCP port number for the health check request. The default value is 80. Valid values are 1 through 65535.
httpHealthCheck.portName

string

Port name as defined in InstanceGroup#NamedPort#name. If both port and portName are defined, port takes precedence.
httpHealthCheck.portSpecification

enum

Specifies how port is selected for health checking, can be one of following values:
USE_FIXED_PORT: The port number in port is used for health checking.
USE_NAMED_PORT: The portName is used for health checking.
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.

If not specified, HTTP health check follows behavior specified in port and portName fields.
httpHealthCheck.host

string

The value of the host header in the HTTP health check request. If left empty (default value), the IP on behalf of which this health check is performed will be used.
httpHealthCheck.requestPath

string

The request path of the HTTP health check request. The default value is /.
httpHealthCheck.proxyHeader

enum

Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
httpHealthCheck.response

string

The string to match anywhere in the first 1024 bytes of the response body. If left empty (the default value), the status code determines health. The response data can only be ASCII.
httpsHealthCheck

object
httpsHealthCheck.port

integer

The TCP port number for the health check request. The default value is 443. Valid values are 1 through 65535.
httpsHealthCheck.portName

string

Port name as defined in InstanceGroup#NamedPort#name. If both port and portName are defined, port takes precedence.
httpsHealthCheck.portSpecification

enum

Specifies how port is selected for health checking, can be one of following values:
USE_FIXED_PORT: The port number in port is used for health checking.
USE_NAMED_PORT: The portName is used for health checking.
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.

If not specified, HTTPS health check follows behavior specified in port and portName fields.
httpsHealthCheck.host

string

The value of the host header in the HTTPS health check request. If left empty (default value), the IP on behalf of which this health check is performed will be used.
httpsHealthCheck.requestPath

string

The request path of the HTTPS health check request. The default value is /.
httpsHealthCheck.proxyHeader

enum

Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
httpsHealthCheck.response

string

The string to match anywhere in the first 1024 bytes of the response body. If left empty (the default value), the status code determines health. The response data can only be ASCII.
http2HealthCheck

object
http2HealthCheck.port

integer

The TCP port number for the health check request. The default value is 443. Valid values are 1 through 65535.
http2HealthCheck.portName

string

Port name as defined in InstanceGroup#NamedPort#name. If both port and portName are defined, port takes precedence.
http2HealthCheck.portSpecification

enum

Specifies how port is selected for health checking, can be one of following values:
USE_FIXED_PORT: The port number in port is used for health checking.
USE_NAMED_PORT: The portName is used for health checking.
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.

If not specified, HTTP2 health check follows behavior specified in port and portName fields.
http2HealthCheck.host

string

The value of the host header in the HTTP/2 health check request. If left empty (default value), the IP on behalf of which this health check is performed will be used.
http2HealthCheck.requestPath

string

The request path of the HTTP/2 health check request. The default value is /.
http2HealthCheck.proxyHeader

enum

Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
http2HealthCheck.response

string

The string to match anywhere in the first 1024 bytes of the response body. If left empty (the default value), the status code determines health. The response data can only be ASCII.
region

string

[Output Only] Region where the health check resides. Not applicable to global health checks.
kind

string

Type of the resource.

Methods

aggregatedList

 Retrieves the list of all HealthCheck resources, regional and global, available to the specified project.

delete

 Deletes the specified HealthCheck resource.

get

 Returns the specified HealthCheck resource.

insert

 Creates a HealthCheck resource in the specified project using the data included in the request.

list

 Retrieves the list of HealthCheck resources available to the specified project.

patch

 Updates a HealthCheck resource in the specified project using the data included in the request.

update

 Updates a HealthCheck resource in the specified project using the data included in the request.