gcp_compute_health_check – Creates a GCP HealthCheck

New in version 2.6.

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
-
Default:
"5"
How often (in seconds) to send a health check. The default value is 5 seconds.
description
-
An optional description of this resource. Provide this property when you create the resource.
healthy_threshold
-
Default:
"2"
A so-far unhealthy instance will be marked healthy after this many consecutive successes. The default value is 2.
http_health_check
-
A nested object resource.
host
-
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
-
The TCP port number for the HTTP health check request.
The default value is 80.
port_name
-
Port name as defined in InstanceGroup#NamedPort#name. If both port and port_name are defined, port takes precedence.
proxy_header
-
    Choices:
  • NONE ←
  • PROXY_V1
Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
request_path
-
Default:
"/"
The request path of the HTTP health check request.
The default value is /.
response
-
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
-
A nested object resource.
host
-
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
-
The TCP port number for the HTTPS health check request.
The default value is 443.
port_name
-
Port name as defined in InstanceGroup#NamedPort#name. If both port and port_name are defined, port takes precedence.
proxy_header
-
    Choices:
  • NONE ←
  • PROXY_V1
Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
request_path
-
Default:
"/"
The request path of the HTTPS health check request.
The default value is /.
response
-
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
- / 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
string
A string representing the contents of a Service Account JSON file.
This should not be passed in as a dictionary, but a string that has the exact contents of a service account json file (valid JSON)
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
-
A nested object resource.
port
-
The TCP port number for the SSL health check request.
The default value is 443.
port_name
-
Port name as defined in InstanceGroup#NamedPort#name. If both port and port_name are defined, port takes precedence.
proxy_header
-
    Choices:
  • NONE ←
  • PROXY_V1
Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
request
-
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
-
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
-
    Choices:
  • present ←
  • absent
Whether the given object should exist in GCP
tcp_health_check
-
A nested object resource.
port
-
The TCP port number for the TCP health check request.
The default value is 443.
port_name
-
Port name as defined in InstanceGroup#NamedPort#name. If both port and port_name are defined, port takes precedence.
proxy_header
-
    Choices:
  • NONE ←
  • PROXY_V1
Specifies the type of proxy header to append before sending data to the backend, either NONE or PROXY_V1. The default is NONE.
request
-
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
-
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
-
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
-
    Choices:
  • TCP
  • SSL
  • HTTP
  • HTTPS
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.
unhealthy_threshold
-
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 GCP_SERVICE_ACCOUNT_FILE env variable.

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

  • For authentication, you can set service_account_contents using the GCP_SERVICE_ACCOUNT_CONTENTS 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.
  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.
  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.
  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.
  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

Authors

  • Google Inc. (@googlecloudplatform)

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