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# gcp_compute_health_check – Creates a GCP HealthCheck

New in version 2.6.

- Synopsis

- Requirements

- Parameters

- Notes

- Examples

- Return Values

- Status

## Synopsis

- Health Checks determine whether instances are responsive and able to do work.

- They are an important part of a comprehensive load balancing configuration, as they enable monitoring instances behind load balancers.

- Health Checks poll instances at a specified interval. Instances that do not respond successfully to some number of probes in a row are marked as unhealthy. No new connections are sent to unhealthy instances, though existing connections will continue. The health check will continue to poll unhealthy instances. If an instance later responds successfully to some number of consecutive probes, it is marked healthy again and can receive new connections.

## Requirements

The below requirements are needed on the host that executes this module.

- python >= 2.6

- requests >= 2.18.4

- google-auth >= 1.3.0

## Parameters

Parameter | Choices/Defaults | Comments
--- | --- | ---
auth_kind string / required | Choices: application machineaccount serviceaccount | The type of credential used.
check_interval_sec integer | Default: "5" | How often (in seconds) to send a health check. The default value is 5 seconds.
description string |  | An optional description of this resource. Provide this property when you create the resource.
env_type string |  | Specifies which Ansible environment you're running this module within. This should not be set unless you know what you're doing. This only alters the User Agent string for any API requests.
healthy_threshold integer | Default: "2" | A so-far unhealthy instance will be marked healthy after this many consecutive successes. The default value is 2.
http_health_check dictionary |  | A nested object resource.
| host string |  | The value of the host header in the HTTP health check request. If left empty (default value), the public IP on behalf of which this health check is performed will be used.
| port integer |  | The TCP port number for the HTTP health check request. The default value is 80.
| port_name string |  | Port name as defined in InstanceGroup#NamedPort#name. If both port and port_name are defined, port takes precedence.
| port_specification string added in 2.9 |  | Specifies how port is selected for health checking, can be one of the 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. Some valid choices include: "USE_FIXED_PORT", "USE_NAMED_PORT", "USE_SERVING_PORT"
| proxy_header string | Default: "NONE" | Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE. Some valid choices include: "NONE", "PROXY_V1"
| request_path string | Default: "/" | The request path of the HTTP health check request. The default value is /.
| 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.
https_health_check dictionary |  | A nested object resource.
| host string |  | The value of the host header in the HTTPS health check request. If left empty (default value), the public IP on behalf of which this health check is performed will be used.
| port integer |  | The TCP port number for the HTTPS health check request. The default value is 443.
| port_name string |  | Port name as defined in InstanceGroup#NamedPort#name. If both port and port_name are defined, port takes precedence.
| port_specification string added in 2.9 |  | Specifies how port is selected for health checking, can be one of the 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. Some valid choices include: "USE_FIXED_PORT", "USE_NAMED_PORT", "USE_SERVING_PORT"
| proxy_header string | Default: "NONE" | Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE. Some valid choices include: "NONE", "PROXY_V1"
| request_path string | Default: "/" | The request path of the HTTPS health check request. The default value is /.
| 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.
name string / required |  | 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.
project string |  | The Google Cloud Platform project to use.
scopes list |  | Array of scopes to be used.
service_account_contents jsonarg |  | The contents of a Service Account JSON file, either in a dictionary or as a JSON string that represents it.
service_account_email string |  | An optional service account email address if machineaccount is selected and the user does not wish to use the default email.
service_account_file path |  | The path of a Service Account JSON file if serviceaccount is selected as type.
ssl_health_check dictionary |  | A nested object resource.
| port integer |  | The TCP port number for the SSL health check request. The default value is 443.
| port_name string |  | Port name as defined in InstanceGroup#NamedPort#name. If both port and port_name are defined, port takes precedence.
| port_specification string added in 2.9 |  | Specifies how port is selected for health checking, can be one of the 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. Some valid choices include: "USE_FIXED_PORT", "USE_NAMED_PORT", "USE_SERVING_PORT"
| proxy_header string | Default: "NONE" | Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE. Some valid choices include: "NONE", "PROXY_V1"
| 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.
| 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.
state string | Choices: present ← absent | Whether the given object should exist in GCP
tcp_health_check dictionary |  | A nested object resource.
| port integer |  | The TCP port number for the TCP health check request. The default value is 443.
| port_name string |  | Port name as defined in InstanceGroup#NamedPort#name. If both port and port_name are defined, port takes precedence.
| port_specification string added in 2.9 |  | Specifies how port is selected for health checking, can be one of the 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. Some valid choices include: "USE_FIXED_PORT", "USE_NAMED_PORT", "USE_SERVING_PORT"
| proxy_header string | Default: "NONE" | Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE. Some valid choices include: "NONE", "PROXY_V1"
| 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.
| 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.
timeout_sec integer | Default: "5" | 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. aliases: timeout_seconds
type string |  | Specifies the type of the healthCheck, either TCP, SSL, HTTP or HTTPS. If not specified, the default is TCP. Exactly one of the protocol-specific health check field must be specified, which must match type field. Some valid choices include: "TCP", "SSL", "HTTP", "HTTPS"
unhealthy_threshold integer | Default: "2" | A so-far healthy instance will be marked unhealthy after this many consecutive failures. The default value is 2.

## Notes

Note

- API Reference: https://cloud.google.com/compute/docs/reference/rest/v1/healthChecks

- Official Documentation: https://cloud.google.com/load-balancing/docs/health-checks

- for authentication, you can set service_account_file using the c(gcp_service_account_file) env variable.

- for authentication, you can set service_account_contents using the c(GCP_SERVICE_ACCOUNT_CONTENTS) env variable.

- For authentication, you can set service_account_email using the `GCP_SERVICE_ACCOUNT_EMAIL` env variable.

- For authentication, you can set auth_kind using the `GCP_AUTH_KIND` env variable.

- For authentication, you can set scopes using the `GCP_SCOPES` env variable.

- Environment variables values will only be used if the playbook values are not set.

- The service_account_email and service_account_file options are mutually exclusive.

## Examples

    - name: create a health check
      gcp_compute_health_check:
        name: test_object
        type: TCP
        tcp_health_check:
          port_name: service-health
          request: ping
          response: pong
        healthy_threshold: 10
        timeout_sec: 2
        unhealthy_threshold: 5
        project: test_project
        auth_kind: serviceaccount
        service_account_file: "/tmp/auth.pem"
        state: present

## Return Values

Common return values are documented here, the following are the fields unique to this module:

Key | Returned | Description
--- | --- | ---
checkIntervalSec integer | success | How often (in seconds) to send a health check. The default value is 5 seconds.
creationTimestamp string | success | Creation timestamp in RFC3339 text format.
description string | success | An optional description of this resource. Provide this property when you create the resource.
healthyThreshold integer | success | A so-far unhealthy instance will be marked healthy after this many consecutive successes. The default value is 2.
httpHealthCheck complex | success | A nested object resource.
| host string | success | The value of the host header in the HTTP health check request. If left empty (default value), the public IP on behalf of which this health check is performed will be used.
| port integer | success | The TCP port number for the HTTP health check request. The default value is 80.
| portName string | success | Port name as defined in InstanceGroup#NamedPort#name. If both port and port_name are defined, port takes precedence.
| portSpecification string | success | Specifies how port is selected for health checking, can be one of the 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.
| proxyHeader string | success | Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
| requestPath string | success | The request path of the HTTP health check request. The default value is /.
| response string | success | 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.
httpsHealthCheck complex | success | A nested object resource.
| host string | success | The value of the host header in the HTTPS health check request. If left empty (default value), the public IP on behalf of which this health check is performed will be used.
| port integer | success | The TCP port number for the HTTPS health check request. The default value is 443.
| portName string | success | Port name as defined in InstanceGroup#NamedPort#name. If both port and port_name are defined, port takes precedence.
| portSpecification string | success | Specifies how port is selected for health checking, can be one of the 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.
| proxyHeader string | success | Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
| requestPath string | success | The request path of the HTTPS health check request. The default value is /.
| response string | success | 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.
id integer | success | The unique identifier for the resource. This identifier is defined by the server.
name string | success | 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.
sslHealthCheck complex | success | A nested object resource.
| port integer | success | The TCP port number for the SSL health check request. The default value is 443.
| portName string | success | Port name as defined in InstanceGroup#NamedPort#name. If both port and port_name are defined, port takes precedence.
| portSpecification string | success | Specifies how port is selected for health checking, can be one of the 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.
| proxyHeader string | success | Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
| request string | success | 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.
| response string | success | 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 complex | success | A nested object resource.
| port integer | success | The TCP port number for the TCP health check request. The default value is 443.
| portName string | success | Port name as defined in InstanceGroup#NamedPort#name. If both port and port_name are defined, port takes precedence.
| portSpecification string | success | Specifies how port is selected for health checking, can be one of the 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.
| proxyHeader string | success | Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
| request string | success | 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.
| response string | success | 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.
timeoutSec integer | success | 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.
type string | success | Specifies the type of the healthCheck, either TCP, SSL, HTTP or HTTPS. If not specified, the default is TCP. Exactly one of the protocol-specific health check field must be specified, which must match type field.
unhealthyThreshold integer | success | A so-far healthy instance will be marked unhealthy after this many consecutive failures. The default value is 2.

## Status

- This module is not guaranteed to have a backwards compatible interface. [preview]

- This module is maintained by the Ansible Community. [community]

### Authors

- Google Inc. (@googlecloudplatform)

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