Method: healthChecks.list

HTTP request
Path parameters
Query parameters
Request body
Response body
- JSON representation
Authorization Scopes
IAM Permissions
Examples
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Retrieves the list of HealthCheck resources available to the specified project.

HTTP request

GET https://compute.googleapis.com/compute/beta/projects/{project}/global/healthChecks

The URL uses gRPC Transcoding syntax.

Path parameters

Parameters

Parameters
`project`	`string` Project ID for this request.

project

string

Project ID for this request.

Query parameters

Parameters
`maxResults`	`integer (uint32 format)` The maximum number of results per page that should be returned. If the number of available results is larger than `maxResults`, Compute Engine returns a `nextPageToken` that can be used to get the next page of results in subsequent list requests. Acceptable values are `0` to `500`, inclusive. (Default: `500`)
`pageToken`	`string` Specifies a page token to use. Set `pageToken` to the `nextPageToken` returned by a previous list request to get the next page of results.
`filter`	`string` A filter expression that filters resources listed in the response. The expression must specify the field name, a comparison operator, and the value that you want to use for filtering. The value must be a string, a number, or a boolean. The comparison operator must be either `=`, `!=`, `>`, or `<`. For example, if you are filtering Compute Engine instances, you can exclude instances named `example-instance` by specifying `name != example-instance`. You can also filter nested fields. For example, you could specify `scheduling.automaticRestart = false` to include instances only if they are not scheduled for automatic restarts. You can use filtering on nested fields to filter based on resource labels. To filter on multiple expressions, provide each separate expression within parentheses. For example: `(scheduling.automaticRestart = true) (cpuPlatform = "Intel Skylake")` By default, each expression is an `AND` expression. However, you can include `AND` and `OR` expressions explicitly. For example: `(cpuPlatform = "Intel Skylake") OR (cpuPlatform = "Intel Broadwell") AND (scheduling.automaticRestart = true)`
`orderBy`	`string` Sorts list results by a certain order. By default, results are returned in alphanumerical order based on the resource name. You can also sort results in descending order based on the creation timestamp using `orderBy="creationTimestamp desc"`. This sorts results based on the `creationTimestamp` field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first. Currently, only sorting by `name` or `creationTimestamp desc` is supported.
`returnPartialSuccess`	`boolean` Opt-in for partial success behavior which provides partial results in case of failure. The default value is false.

Request body

The request body must be empty.

Response body

If successful, the response body contains data with the following structure:

JSON representation
{ "id": string, "items": [ { "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 }, "grpcHealthCheck": { "port": integer, "portName": string, "portSpecification": enum, "grpcServiceName": string }, "selfLink": string, "region": string, "logConfig": { "enable": boolean }, "kind": string } ], "nextPageToken": string, "selfLink": string, "warning": { "code": enum, "message": string, "data": [ { "key": string, "value": string } ] }, "kind": string }

JSON representation

{
  "id": string,
  "items": [
    {
      "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
      },
      "grpcHealthCheck": {
        "port": integer,
        "portName": string,
        "portSpecification": enum,
        "grpcServiceName": string
      },
      "selfLink": string,
      "region": string,
      "logConfig": {
        "enable": boolean
      },
      "kind": string
    }
  ],
  "nextPageToken": string,
  "selfLink": string,
  "warning": {
    "code": enum,
    "message": string,
    "data": [
      {
        "key": string,
        "value": string
      }
    ]
  },
  "kind": string
}

Fields
`id`	`string` [Output Only] Unique identifier for the resource; defined by the server.
`items[]`	`object` A list of HealthCheck resources.
`items[].id`	`string (fixed64 format)` [Output Only] The unique identifier for the resource. This identifier is defined by the server.
`items[].creationTimestamp`	`string` [Output Only] Creation timestamp in 3339 text format.
`items[].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.
`items[].description`	`string` An optional description of this resource. Provide this property when you create the resource.
`items[].checkIntervalSec`	`integer` How often (in seconds) to send a health check. The default value is 5 seconds.
`items[].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`.
`items[].unhealthyThreshold`	`integer` A so-far healthy instance will be marked unhealthy after this many consecutive failures. The default value is 2.
`items[].healthyThreshold`	`integer` A so-far unhealthy instance will be marked healthy after this many consecutive successes. The default value is 2.
`items[].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.
`items[].tcpHealthCheck`	`object`
`items[].tcpHealthCheck.port`	`integer` The TCP port number for the health check request. The default value is `80`. Valid values are `1` through `65535`.
`items[].tcpHealthCheck.portName`	`string` Port name as defined in `InstanceGroup#NamedPort#name`. If both port and portName are defined, port takes precedence.
`items[].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.
`items[].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.
`items[].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.
`items[].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`.
`items[].sslHealthCheck`	`object`
`items[].sslHealthCheck.port`	`integer` The TCP port number for the health check request. The default value is `443`. Valid values are `1` through `65535`.
`items[].sslHealthCheck.portName`	`string` Port name as defined in `InstanceGroup#NamedPort#name`. If both port and portName are defined, port takes precedence.
`items[].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.
`items[].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.
`items[].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.
`items[].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`.
`items[].httpHealthCheck`	`object`
`items[].httpHealthCheck.port`	`integer` The TCP port number for the health check request. The default value is `80`. Valid values are `1` through `65535`.
`items[].httpHealthCheck.portName`	`string` Port name as defined in `InstanceGroup#NamedPort#name`. If both port and portName are defined, port takes precedence.
`items[].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.
`items[].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.
`items[].httpHealthCheck.requestPath`	`string` The request path of the HTTP health check request. The default value is `/`.
`items[].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`.
`items[].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.
`items[].httpsHealthCheck`	`object`
`items[].httpsHealthCheck.port`	`integer` The TCP port number for the health check request. The default value is `443`. Valid values are `1` through `65535`.
`items[].httpsHealthCheck.portName`	`string` Port name as defined in InstanceGroup#NamedPort#name. If both port and portName are defined, port takes precedence.
`items[].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.
`items[].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.
`items[].httpsHealthCheck.requestPath`	`string` The request path of the HTTPS health check request. The default value is `/`.
`items[].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`.
`items[].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.
`items[].http2HealthCheck`	`object`
`items[].http2HealthCheck.port`	`integer` The TCP port number for the health check request. The default value is `443`. Valid values are `1` through `65535`.
`items[].http2HealthCheck.portName`	`string` Port name as defined in `InstanceGroup#NamedPort#name`. If both port and portName are defined, port takes precedence.
`items[].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.
`items[].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.
`items[].http2HealthCheck.requestPath`	`string` The request path of the HTTP/2 health check request. The default value is `/`.
`items[].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`.
`items[].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.
`items[].grpcHealthCheck`	`object`
`items[].grpcHealthCheck.port`	`integer` The port number for the health check request. Must be specified if portName and portSpecification are not set or if portSpecification is USE_FIXED_PORT. Valid values are `1` through `65535`.
`items[].grpcHealthCheck.portName`	`string` Port name as defined in `InstanceGroup#NamedPort#name`. If both port and portName are defined, port takes precedence. The portName should conform to RFC1035.
`items[].grpcHealthCheck.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, gRPC health check follows behavior specified in `port` and `portName` fields.
`items[].grpcHealthCheck.grpcServiceName`	`string` The gRPC service name for the health check. This field is optional. The value of grpcServiceName has the following meanings by convention: - Empty serviceName means the overall status of all services at the backend. - Non-empty serviceName means the health of that gRPC service, as defined by the owner of the service. The grpcServiceName can only be ASCII.
`items[].selfLink`	`string` [Output Only] Server-defined URL for the resource.
`items[].region`	`string` [Output Only] Region where the health check resides. Not applicable to global health checks.
`items[].logConfig`	`object` Configure logging on this health check.
`items[].logConfig.enable`	`boolean` Indicates whether or not to export logs. This is false by default, which means no health check logging will be done.
`items[].kind`	`string` Type of the resource.
`nextPageToken`	`string` [Output Only] This token allows you to get the next page of results for list requests. If the number of results is larger than `maxResults`, use the `nextPageToken` as a value for the query parameter `pageToken` in the next list request. Subsequent list requests will have their own `nextPageToken` to continue paging through the results.
`selfLink`	`string` [Output Only] Server-defined URL for this resource.
`warning`	`object` [Output Only] Informational warning message.
`warning.code`	`enum` [Output Only] A warning code, if applicable. For example, Compute Engine returns `NO_RESULTS_ON_PAGE` if there are no results in the response.
`warning.message`	`string` [Output Only] A human-readable description of the warning code.
`warning.data[]`	`object` [Output Only] Metadata about this warning in `key: value` format. For example: "data": [ { "key": "scope", "value": "zones/us-east1-d" }
`warning.data[].key`	`string` [Output Only] A key that provides more detail on the warning being returned. For example, for warnings where there are no results in a list request for a particular zone, this key might be `scope` and the key value might be the zone name. Other examples might be a key indicating a deprecated resource and a suggested replacement, or a warning about invalid network settings (for example, if an instance attempts to perform IP forwarding but is not enabled for IP forwarding).
`warning.data[].value`	`string` [Output Only] A warning data value corresponding to the key.
`kind`	`string` Type of resource.

Authorization Scopes

Requires one of the following OAuth scopes:

https://www.googleapis.com/auth/compute
https://www.googleapis.com/auth/cloud-platform

For more information, see the Authentication Overview.

IAM Permissions

In addition to any permissions specified on the fields above, authorization requires one or more of the following IAM permissions:

compute.healthChecks.list

To find predefined roles that contain those permissions, see Compute Engine IAM Roles.