google.cloud.gcp_compute_backend_service – Creates a GCP BackendService

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Ansible/docs/2.11/collections/google/cloud/gcp compute backend service module


google.cloud.gcp_compute_backend_service – Creates a GCP BackendService

Note

This plugin is part of the google.cloud collection (version 1.0.2).

To install it use: ansible-galaxy collection install google.cloud.

To use it in a playbook, specify: google.cloud.gcp_compute_backend_service.


Synopsis

  • A Backend Service defines a group of virtual machines that will serve traffic for load balancing. This resource is a global backend service, appropriate for external load balancing or self-managed internal load balancing.
  • For managed internal load balancing, use a regional backend service instead.
  • Currently self-managed internal load balancing is only available in beta.

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

affinity_cookie_ttl_sec

integer

Lifetime of cookies in seconds if session_affinity is GENERATED_COOKIE. If set to 0, the cookie is non-persistent and lasts only until the end of the browser session (or equivalent). The maximum allowed value for TTL is one day.

When the load balancing scheme is INTERNAL, this field is not used.

auth_kind

string / required

  • application
  • machineaccount
  • serviceaccount

The type of credential used.

backends

list / elements=dictionary

The set of backends that serve this BackendService.

balancing_mode

string

Default:

"UTILIZATION"

Specifies the balancing mode for this backend.

For global HTTP(S) or TCP/SSL load balancing, the default is UTILIZATION. Valid values are UTILIZATION, RATE (for HTTP(S)) and CONNECTION (for TCP/SSL).

Some valid choices include: "UTILIZATION", "RATE", "CONNECTION"

capacity_scaler

string

Default:

"1.0"

A multiplier applied to the group's maximum servicing capacity (based on UTILIZATION, RATE or CONNECTION).

Default value is 1, which means the group will serve up to 100% of its configured capacity (depending on balancingMode). A setting of 0 means the group is completely drained, offering 0% of its available Capacity. Valid range is [0.0,1.0].

description

string

An optional description of this resource.

Provide this property when you create the resource.

group

string / required

The fully-qualified URL of an Instance Group or Network Endpoint Group resource. In case of instance group this defines the list of instances that serve traffic. Member virtual machine instances from each instance group must live in the same zone as the instance group itself. No two backends in a backend service are allowed to use same Instance Group resource.

For Network Endpoint Groups this defines list of endpoints. All endpoints of Network Endpoint Group must be hosted on instances located in the same zone as the Network Endpoint Group.

Backend services cannot mix Instance Group and Network Endpoint Group backends.

Note that you must specify an Instance Group or Network Endpoint Group resource using the fully-qualified URL, rather than a partial URL.

max_connections

integer

The max number of simultaneous connections for the group. Can be used with either CONNECTION or UTILIZATION balancing modes.

For CONNECTION mode, either maxConnections or one of maxConnectionsPerInstance or maxConnectionsPerEndpoint, as appropriate for group type, must be set.

max_connections_per_endpoint

integer

The max number of simultaneous connections that a single backend network endpoint can handle. This is used to calculate the capacity of the group. Can be used in either CONNECTION or UTILIZATION balancing modes.

For CONNECTION mode, either maxConnections or maxConnectionsPerEndpoint must be set.

max_connections_per_instance

integer

The max number of simultaneous connections that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either CONNECTION or UTILIZATION balancing modes.

For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be set.

max_rate

integer

The max requests per second (RPS) of the group.

Can be used with either RATE or UTILIZATION balancing modes, but required if RATE mode. For RATE mode, either maxRate or one of maxRatePerInstance or maxRatePerEndpoint, as appropriate for group type, must be set.

max_rate_per_endpoint

string

The max requests per second (RPS) that a single backend network endpoint can handle. This is used to calculate the capacity of the group. Can be used in either balancing mode. For RATE mode, either maxRate or maxRatePerEndpoint must be set.

max_rate_per_instance

string

The max requests per second (RPS) that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either balancing mode. For RATE mode, either maxRate or maxRatePerInstance must be set.

max_utilization

string

Default:

"0.8"

Used when balancingMode is UTILIZATION. This ratio defines the CPU utilization target for the group. The default is 0.8. Valid range is [0.0, 1.0].

cdn_policy

dictionary

Cloud CDN configuration for this BackendService.

cache_key_policy

dictionary

The CacheKeyPolicy for this CdnPolicy.

include_host

boolean

  • no
  • yes

If true requests to different hosts will be cached separately.

include_protocol

boolean

  • no
  • yes

If true, http and https requests will be cached separately.

include_query_string

boolean

  • no
  • yes

If true, include query string parameters in the cache key according to query_string_whitelist and query_string_blacklist. If neither is set, the entire query string will be included.

If false, the query string will be excluded from the cache key entirely.

query_string_blacklist

list / elements=string

Names of query string parameters to exclude in cache keys.

All other parameters will be included. Either specify query_string_whitelist or query_string_blacklist, not both.

'&' and '=' will be percent encoded and not treated as delimiters.

query_string_whitelist

list / elements=string

Names of query string parameters to include in cache keys.

All other parameters will be excluded. Either specify query_string_whitelist or query_string_blacklist, not both.

'&' and '=' will be percent encoded and not treated as delimiters.

signed_url_cache_max_age_sec

integer

Default:

"3600"

Maximum number of seconds the response to a signed URL request will be considered fresh, defaults to 1hr (3600s). After this time period, the response will be revalidated before being served.

When serving responses to signed URL requests, Cloud CDN will internally behave as though all responses from this backend had a "Cache-Control: public, max-age=[TTL]" header, regardless of any existing Cache-Control header. The actual headers served in responses will not be altered.

circuit_breakers

dictionary

Settings controlling the volume of connections to a backend service. This field is applicable only when the load_balancing_scheme is set to INTERNAL_SELF_MANAGED.

max_connections

integer

Default:

"1024"

The maximum number of connections to the backend cluster.

Defaults to 1024.

max_pending_requests

integer

Default:

"1024"

The maximum number of pending requests to the backend cluster.

Defaults to 1024.

max_requests

integer

Default:

"1024"

The maximum number of parallel requests to the backend cluster.

Defaults to 1024.

max_requests_per_connection

integer

Maximum requests for a single backend connection. This parameter is respected by both the HTTP/1.1 and HTTP/2 implementations. If not specified, there is no limit. Setting this parameter to 1 will effectively disable keep alive.

max_retries

integer

Default:

"3"

The maximum number of parallel retries to the backend cluster.

Defaults to 3.

connection_draining

dictionary

Settings for connection draining .

draining_timeout_sec

integer

Default:

"300"

Time for which instance will be drained (not accept new connections, but still work to finish started).

consistent_hash

dictionary

Consistent Hash-based load balancing can be used to provide soft session affinity based on HTTP headers, cookies or other properties. This load balancing policy is applicable only for HTTP connections. The affinity to a particular destination host will be lost when one or more hosts are added/removed from the destination service. This field specifies parameters that control consistent hashing. This field only applies if the load_balancing_scheme is set to INTERNAL_SELF_MANAGED. This field is only applicable when locality_lb_policy is set to MAGLEV or RING_HASH.

http_cookie

dictionary

Hash is based on HTTP Cookie. This field describes a HTTP cookie that will be used as the hash key for the consistent hash load balancer. If the cookie is not present, it will be generated.

This field is applicable if the sessionAffinity is set to HTTP_COOKIE.

name

string

Name of the cookie.

path

string

Path to set for the cookie.

ttl

dictionary

Lifetime of the cookie.

nanos

integer

Span of time that's a fraction of a second at nanosecond resolution. Durations less than one second are represented with a 0 seconds field and a positive nanos field. Must be from 0 to 999,999,999 inclusive.

seconds

integer / required

Span of time at a resolution of a second.

Must be from 0 to 315,576,000,000 inclusive.

http_header_name

string

The hash based on the value of the specified header field.

This field is applicable if the sessionAffinity is set to HEADER_FIELD.

minimum_ring_size

integer

Default:

"1024"

The minimum number of virtual nodes to use for the hash ring.

Larger ring sizes result in more granular load distributions. If the number of hosts in the load balancing pool is larger than the ring size, each host will be assigned a single virtual node.

Defaults to 1024.

custom_request_headers

list / elements=string

Headers that the HTTP/S load balancer should add to proxied requests.

description

string

An optional description of this resource.

enable_cdn

boolean

  • no
  • yes

If true, enable Cloud CDN for this BackendService.

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.

health_checks

list / elements=string

The set of URLs to the HttpHealthCheck or HttpsHealthCheck resource for health checking this BackendService. Currently at most one health check can be specified.

A health check must be specified unless the backend service uses an internet or serverless NEG as a backend.

For internal load balancing, a URL to a HealthCheck resource must be specified instead.

iap

dictionary

Settings for enabling Cloud Identity Aware Proxy.

enabled

boolean

  • no
  • yes

Enables IAP.

oauth2_client_id

string / required

OAuth2 Client ID for IAP .

oauth2_client_secret

string / required

OAuth2 Client Secret for IAP .

load_balancing_scheme

string

Default:

"EXTERNAL"

Indicates whether the backend service will be used with internal or external load balancing. A backend service created for one type of load balancing cannot be used with the other.

Some valid choices include: "EXTERNAL", "INTERNAL_SELF_MANAGED"

locality_lb_policy

string

The load balancing algorithm used within the scope of the locality.

The possible values are - * ROUND_ROBIN - This is a simple policy in which each healthy backend is selected in round robin order.

  • LEAST_REQUEST - An O(1) algorithm which selects two random healthy hosts and picks the host which has fewer active requests.
  • RING_HASH - The ring/modulo hash load balancer implements consistent hashing to backends. The algorithm has the property that the addition/removal of a host from a set of N hosts only affects 1/N of the requests.
  • RANDOM - The load balancer selects a random healthy host.
  • ORIGINAL_DESTINATION - Backend host is selected based on the client connection metadata, i.e., connections are opened to the same address as the destination address of the incoming connection before the connection was redirected to the load balancer.
  • MAGLEV - used as a drop in replacement for the ring hash load balancer.

Maglev is not as stable as ring hash but has faster table lookup build times and host selection times. For more information about Maglev, refer to https://ai.google/research/pubs/pub44824 This field is applicable only when the load_balancing_scheme is set to INTERNAL_SELF_MANAGED.

Some valid choices include: "ROUND_ROBIN", "LEAST_REQUEST", "RING_HASH", "RANDOM", "ORIGINAL_DESTINATION", "MAGLEV"

log_config

dictionary

This field denotes the logging options for the load balancer traffic served by this backend service.

If logging is enabled, logs will be exported to Stackdriver.

enable

boolean

  • no
  • yes

Whether to enable logging for the load balancer traffic served by this backend service.

sample_rate

string

This field can only be specified if logging is enabled for this backend service. The value of the field must be in [0, 1]. This configures the sampling rate of requests to the load balancer where 1.0 means all logged requests are reported and 0.0 means no logged requests are reported.

The default value is 1.0.

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.

outlier_detection

dictionary

Settings controlling eviction of unhealthy hosts from the load balancing pool.

This field is applicable only when the load_balancing_scheme is set to INTERNAL_SELF_MANAGED.

base_ejection_time

dictionary

The base time that a host is ejected for. The real time is equal to the base time multiplied by the number of times the host has been ejected. Defaults to 30000ms or 30s.

nanos

integer

Span of time that's a fraction of a second at nanosecond resolution. Durations less than one second are represented with a 0 `seconds` field and a positive `nanos` field. Must be from 0 to 999,999,999 inclusive.

seconds

integer / required

Span of time at a resolution of a second. Must be from 0 to 315,576,000,000 inclusive.

consecutive_errors

integer

Default:

"5"

Number of errors before a host is ejected from the connection pool. When the backend host is accessed over HTTP, a 5xx return code qualifies as an error.

Defaults to 5.

consecutive_gateway_failure

integer

Default:

"5"

The number of consecutive gateway failures (502, 503, 504 status or connection errors that are mapped to one of those status codes) before a consecutive gateway failure ejection occurs. Defaults to 5.

enforcing_consecutive_errors

integer

Default:

"100"

The percentage chance that a host will be actually ejected when an outlier status is detected through consecutive 5xx. This setting can be used to disable ejection or to ramp it up slowly. Defaults to 100.

enforcing_consecutive_gateway_failure

integer

The percentage chance that a host will be actually ejected when an outlier status is detected through consecutive gateway failures. This setting can be used to disable ejection or to ramp it up slowly. Defaults to 0.

enforcing_success_rate

integer

Default:

"100"

The percentage chance that a host will be actually ejected when an outlier status is detected through success rate statistics. This setting can be used to disable ejection or to ramp it up slowly. Defaults to 100.

interval

dictionary

Time interval between ejection sweep analysis. This can result in both new ejections as well as hosts being returned to service. Defaults to 10 seconds.

nanos

integer

Span of time that's a fraction of a second at nanosecond resolution. Durations less than one second are represented with a 0 `seconds` field and a positive `nanos` field. Must be from 0 to 999,999,999 inclusive.

seconds

integer / required

Span of time at a resolution of a second. Must be from 0 to 315,576,000,000 inclusive.

max_ejection_percent

integer

Default:

"10"

Maximum percentage of hosts in the load balancing pool for the backend service that can be ejected. Defaults to 10%.

success_rate_minimum_hosts

integer

Default:

"5"

The number of hosts in a cluster that must have enough request volume to detect success rate outliers. If the number of hosts is less than this setting, outlier detection via success rate statistics is not performed for any host in the cluster. Defaults to 5.

success_rate_request_volume

integer

Default:

"100"

The minimum number of total requests that must be collected in one interval (as defined by the interval duration above) to include this host in success rate based outlier detection. If the volume is lower than this setting, outlier detection via success rate statistics is not performed for that host. Defaults to 100.

success_rate_stdev_factor

integer

Default:

"1900"

This factor is used to determine the ejection threshold for success rate outlier ejection. The ejection threshold is the difference between the mean success rate, and the product of this factor and the standard deviation of the mean success rate: mean - (stdev * success_rate_stdev_factor). This factor is divided by a thousand to get a double. That is, if the desired factor is 1.9, the runtime value should be 1900. Defaults to 1900.

port_name

string

Name of backend port. The same name should appear in the instance groups referenced by this service. Required when the load balancing scheme is EXTERNAL.

project

string

The Google Cloud Platform project to use.

protocol

string

The protocol this BackendService uses to communicate with backends.

The default is HTTP. **NOTE**: HTTP2 is only valid for beta HTTP/2 load balancer types and may result in errors if used with the GA API.

Some valid choices include: "HTTP", "HTTPS", "HTTP2", "TCP", "SSL", "GRPC"

scopes

list / elements=string

Array of scopes to be used

security_policy

string

The security policy associated with this backend service.

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.

session_affinity

string

Type of session affinity to use. The default is NONE. Session affinity is not applicable if the protocol is UDP.

Some valid choices include: "NONE", "CLIENT_IP", "CLIENT_IP_PORT_PROTO", "CLIENT_IP_PROTO", "GENERATED_COOKIE", "HEADER_FIELD", "HTTP_COOKIE"

state

string

  • present

  • absent

Whether the given object should exist in GCP

timeout_sec

integer

How many seconds to wait for the backend before considering it a failed request. Default is 30 seconds. Valid range is [1, 86400].


aliases: timeout_seconds



Notes

Note

  • API Reference: https://cloud.google.com/compute/docs/reference/v1/backendServices
  • Official Documentation: https://cloud.google.com/compute/docs/load-balancing/http/backend-service
  • for authentication, you can set service_account_file using the gcp_service_account_file env variable.
  • for authentication, you can set service_account_contents using the 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 instance group
  google.cloud.gcp_compute_instance_group:
    name: instancegroup-backendservice
    zone: us-central1-a
    project: "{{ gcp_project }}"
    auth_kind: "{{ gcp_cred_kind }}"
    service_account_file: "{{ gcp_cred_file }}"
    state: present
  register: instancegroup

- name: create a HTTP health check
  google.cloud.gcp_compute_http_health_check:
    name: httphealthcheck-backendservice
    healthy_threshold: 10
    port: 8080
    timeout_sec: 2
    unhealthy_threshold: 5
    project: "{{ gcp_project }}"
    auth_kind: "{{ gcp_cred_kind }}"
    service_account_file: "{{ gcp_cred_file }}"
    state: present
  register: healthcheck

- name: create a backend service
  google.cloud.gcp_compute_backend_service:
    name: test_object
    backends:
    - group: "{{ instancegroup.selfLink }}"
    health_checks:
    - "{{ healthcheck.selfLink }}"
    enable_cdn: 'true'
    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

affinityCookieTtlSec

integer

success

Lifetime of cookies in seconds if session_affinity is GENERATED_COOKIE. If set to 0, the cookie is non-persistent and lasts only until the end of the browser session (or equivalent). The maximum allowed value for TTL is one day.

When the load balancing scheme is INTERNAL, this field is not used.


backends

complex

success

The set of backends that serve this BackendService.


balancingMode

string

success

Specifies the balancing mode for this backend.

For global HTTP(S) or TCP/SSL load balancing, the default is UTILIZATION. Valid values are UTILIZATION, RATE (for HTTP(S)) and CONNECTION (for TCP/SSL).


capacityScaler

string

success

A multiplier applied to the group's maximum servicing capacity (based on UTILIZATION, RATE or CONNECTION).

Default value is 1, which means the group will serve up to 100% of its configured capacity (depending on balancingMode). A setting of 0 means the group is completely drained, offering 0% of its available Capacity. Valid range is [0.0,1.0].


description

string

success

An optional description of this resource.

Provide this property when you create the resource.


group

string

success

The fully-qualified URL of an Instance Group or Network Endpoint Group resource. In case of instance group this defines the list of instances that serve traffic. Member virtual machine instances from each instance group must live in the same zone as the instance group itself. No two backends in a backend service are allowed to use same Instance Group resource.

For Network Endpoint Groups this defines list of endpoints. All endpoints of Network Endpoint Group must be hosted on instances located in the same zone as the Network Endpoint Group.

Backend services cannot mix Instance Group and Network Endpoint Group backends.

Note that you must specify an Instance Group or Network Endpoint Group resource using the fully-qualified URL, rather than a partial URL.


maxConnections

integer

success

The max number of simultaneous connections for the group. Can be used with either CONNECTION or UTILIZATION balancing modes.

For CONNECTION mode, either maxConnections or one of maxConnectionsPerInstance or maxConnectionsPerEndpoint, as appropriate for group type, must be set.


maxConnectionsPerEndpoint

integer

success

The max number of simultaneous connections that a single backend network endpoint can handle. This is used to calculate the capacity of the group. Can be used in either CONNECTION or UTILIZATION balancing modes.

For CONNECTION mode, either maxConnections or maxConnectionsPerEndpoint must be set.


maxConnectionsPerInstance

integer

success

The max number of simultaneous connections that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either CONNECTION or UTILIZATION balancing modes.

For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be set.


maxRate

integer

success

The max requests per second (RPS) of the group.

Can be used with either RATE or UTILIZATION balancing modes, but required if RATE mode. For RATE mode, either maxRate or one of maxRatePerInstance or maxRatePerEndpoint, as appropriate for group type, must be set.


maxRatePerEndpoint

string

success

The max requests per second (RPS) that a single backend network endpoint can handle. This is used to calculate the capacity of the group. Can be used in either balancing mode. For RATE mode, either maxRate or maxRatePerEndpoint must be set.


maxRatePerInstance

string

success

The max requests per second (RPS) that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either balancing mode. For RATE mode, either maxRate or maxRatePerInstance must be set.


maxUtilization

string

success

Used when balancingMode is UTILIZATION. This ratio defines the CPU utilization target for the group. The default is 0.8. Valid range is [0.0, 1.0].


cdnPolicy

complex

success

Cloud CDN configuration for this BackendService.


cacheKeyPolicy

complex

success

The CacheKeyPolicy for this CdnPolicy.


includeHost

boolean

success

If true requests to different hosts will be cached separately.


includeProtocol

boolean

success

If true, http and https requests will be cached separately.


includeQueryString

boolean

success

If true, include query string parameters in the cache key according to query_string_whitelist and query_string_blacklist. If neither is set, the entire query string will be included.

If false, the query string will be excluded from the cache key entirely.


queryStringBlacklist

list / elements=string

success

Names of query string parameters to exclude in cache keys.

All other parameters will be included. Either specify query_string_whitelist or query_string_blacklist, not both.

'&' and '=' will be percent encoded and not treated as delimiters.


queryStringWhitelist

list / elements=string

success

Names of query string parameters to include in cache keys.

All other parameters will be excluded. Either specify query_string_whitelist or query_string_blacklist, not both.

'&' and '=' will be percent encoded and not treated as delimiters.


signedUrlCacheMaxAgeSec

integer

success

Maximum number of seconds the response to a signed URL request will be considered fresh, defaults to 1hr (3600s). After this time period, the response will be revalidated before being served.

When serving responses to signed URL requests, Cloud CDN will internally behave as though all responses from this backend had a "Cache-Control: public, max-age=[TTL]" header, regardless of any existing Cache-Control header. The actual headers served in responses will not be altered.


circuitBreakers

complex

success

Settings controlling the volume of connections to a backend service. This field is applicable only when the load_balancing_scheme is set to INTERNAL_SELF_MANAGED.


maxConnections

integer

success

The maximum number of connections to the backend cluster.

Defaults to 1024.


maxPendingRequests

integer

success

The maximum number of pending requests to the backend cluster.

Defaults to 1024.


maxRequests

integer

success

The maximum number of parallel requests to the backend cluster.

Defaults to 1024.


maxRequestsPerConnection

integer

success

Maximum requests for a single backend connection. This parameter is respected by both the HTTP/1.1 and HTTP/2 implementations. If not specified, there is no limit. Setting this parameter to 1 will effectively disable keep alive.


maxRetries

integer

success

The maximum number of parallel retries to the backend cluster.

Defaults to 3.


connectionDraining

complex

success

Settings for connection draining .


drainingTimeoutSec

integer

success

Time for which instance will be drained (not accept new connections, but still work to finish started).


consistentHash

complex

success

Consistent Hash-based load balancing can be used to provide soft session affinity based on HTTP headers, cookies or other properties. This load balancing policy is applicable only for HTTP connections. The affinity to a particular destination host will be lost when one or more hosts are added/removed from the destination service. This field specifies parameters that control consistent hashing. This field only applies if the load_balancing_scheme is set to INTERNAL_SELF_MANAGED. This field is only applicable when locality_lb_policy is set to MAGLEV or RING_HASH.


httpCookie

complex

success

Hash is based on HTTP Cookie. This field describes a HTTP cookie that will be used as the hash key for the consistent hash load balancer. If the cookie is not present, it will be generated.

This field is applicable if the sessionAffinity is set to HTTP_COOKIE.


name

string

success

Name of the cookie.


path

string

success

Path to set for the cookie.


ttl

complex

success

Lifetime of the cookie.


nanos

integer

success

Span of time that's a fraction of a second at nanosecond resolution. Durations less than one second are represented with a 0 seconds field and a positive nanos field. Must be from 0 to 999,999,999 inclusive.


seconds

integer

success

Span of time at a resolution of a second.

Must be from 0 to 315,576,000,000 inclusive.


httpHeaderName

string

success

The hash based on the value of the specified header field.

This field is applicable if the sessionAffinity is set to HEADER_FIELD.


minimumRingSize

integer

success

The minimum number of virtual nodes to use for the hash ring.

Larger ring sizes result in more granular load distributions. If the number of hosts in the load balancing pool is larger than the ring size, each host will be assigned a single virtual node.

Defaults to 1024.


creationTimestamp

string

success

Creation timestamp in RFC3339 text format.


customRequestHeaders

list / elements=string

success

Headers that the HTTP/S load balancer should add to proxied requests.


description

string

success

An optional description of this resource.


enableCDN

boolean

success

If true, enable Cloud CDN for this BackendService.


fingerprint

string

success

Fingerprint of this resource. A hash of the contents stored in this object. This field is used in optimistic locking.


healthChecks

list / elements=string

success

The set of URLs to the HttpHealthCheck or HttpsHealthCheck resource for health checking this BackendService. Currently at most one health check can be specified.

A health check must be specified unless the backend service uses an internet or serverless NEG as a backend.

For internal load balancing, a URL to a HealthCheck resource must be specified instead.


iap

complex

success

Settings for enabling Cloud Identity Aware Proxy.


enabled

boolean

success

Enables IAP.


oauth2ClientId

string

success

OAuth2 Client ID for IAP .


oauth2ClientSecret

string

success

OAuth2 Client Secret for IAP .


oauth2ClientSecretSha256

string

success

OAuth2 Client Secret SHA-256 for IAP .


id

integer

success

The unique identifier for the resource.


loadBalancingScheme

string

success

Indicates whether the backend service will be used with internal or external load balancing. A backend service created for one type of load balancing cannot be used with the other.


localityLbPolicy

string

success

The load balancing algorithm used within the scope of the locality.

The possible values are - * ROUND_ROBIN - This is a simple policy in which each healthy backend is selected in round robin order.

  • LEAST_REQUEST - An O(1) algorithm which selects two random healthy hosts and picks the host which has fewer active requests.
  • RING_HASH - The ring/modulo hash load balancer implements consistent hashing to backends. The algorithm has the property that the addition/removal of a host from a set of N hosts only affects 1/N of the requests.
  • RANDOM - The load balancer selects a random healthy host.
  • ORIGINAL_DESTINATION - Backend host is selected based on the client connection metadata, i.e., connections are opened to the same address as the destination address of the incoming connection before the connection was redirected to the load balancer.
  • MAGLEV - used as a drop in replacement for the ring hash load balancer.

Maglev is not as stable as ring hash but has faster table lookup build times and host selection times. For more information about Maglev, refer to https://ai.google/research/pubs/pub44824 This field is applicable only when the load_balancing_scheme is set to INTERNAL_SELF_MANAGED.


logConfig

complex

success

This field denotes the logging options for the load balancer traffic served by this backend service.

If logging is enabled, logs will be exported to Stackdriver.


enable

boolean

success

Whether to enable logging for the load balancer traffic served by this backend service.


sampleRate

string

success

This field can only be specified if logging is enabled for this backend service. The value of the field must be in [0, 1]. This configures the sampling rate of requests to the load balancer where 1.0 means all logged requests are reported and 0.0 means no logged requests are reported.

The default value is 1.0.


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.


outlierDetection

complex

success

Settings controlling eviction of unhealthy hosts from the load balancing pool.

This field is applicable only when the load_balancing_scheme is set to INTERNAL_SELF_MANAGED.


baseEjectionTime

complex

success

The base time that a host is ejected for. The real time is equal to the base time multiplied by the number of times the host has been ejected. Defaults to 30000ms or 30s.


nanos

integer

success

Span of time that's a fraction of a second at nanosecond resolution. Durations less than one second are represented with a 0 `seconds` field and a positive `nanos` field. Must be from 0 to 999,999,999 inclusive.


seconds

integer

success

Span of time at a resolution of a second. Must be from 0 to 315,576,000,000 inclusive.


consecutiveErrors

integer

success

Number of errors before a host is ejected from the connection pool. When the backend host is accessed over HTTP, a 5xx return code qualifies as an error.

Defaults to 5.


consecutiveGatewayFailure

integer

success

The number of consecutive gateway failures (502, 503, 504 status or connection errors that are mapped to one of those status codes) before a consecutive gateway failure ejection occurs. Defaults to 5.


enforcingConsecutiveErrors

integer

success

The percentage chance that a host will be actually ejected when an outlier status is detected through consecutive 5xx. This setting can be used to disable ejection or to ramp it up slowly. Defaults to 100.


enforcingConsecutiveGatewayFailure

integer

success

The percentage chance that a host will be actually ejected when an outlier status is detected through consecutive gateway failures. This setting can be used to disable ejection or to ramp it up slowly. Defaults to 0.


enforcingSuccessRate

integer

success

The percentage chance that a host will be actually ejected when an outlier status is detected through success rate statistics. This setting can be used to disable ejection or to ramp it up slowly. Defaults to 100.


interval

complex

success

Time interval between ejection sweep analysis. This can result in both new ejections as well as hosts being returned to service. Defaults to 10 seconds.


nanos

integer

success

Span of time that's a fraction of a second at nanosecond resolution. Durations less than one second are represented with a 0 `seconds` field and a positive `nanos` field. Must be from 0 to 999,999,999 inclusive.


seconds

integer

success

Span of time at a resolution of a second. Must be from 0 to 315,576,000,000 inclusive.


maxEjectionPercent

integer

success

Maximum percentage of hosts in the load balancing pool for the backend service that can be ejected. Defaults to 10%.


successRateMinimumHosts

integer

success

The number of hosts in a cluster that must have enough request volume to detect success rate outliers. If the number of hosts is less than this setting, outlier detection via success rate statistics is not performed for any host in the cluster. Defaults to 5.


successRateRequestVolume

integer

success

The minimum number of total requests that must be collected in one interval (as defined by the interval duration above) to include this host in success rate based outlier detection. If the volume is lower than this setting, outlier detection via success rate statistics is not performed for that host. Defaults to 100.


successRateStdevFactor

integer

success

This factor is used to determine the ejection threshold for success rate outlier ejection. The ejection threshold is the difference between the mean success rate, and the product of this factor and the standard deviation of the mean success rate: mean - (stdev * success_rate_stdev_factor). This factor is divided by a thousand to get a double. That is, if the desired factor is 1.9, the runtime value should be 1900. Defaults to 1900.


portName

string

success

Name of backend port. The same name should appear in the instance groups referenced by this service. Required when the load balancing scheme is EXTERNAL.


protocol

string

success

The protocol this BackendService uses to communicate with backends.

The default is HTTP. **NOTE**: HTTP2 is only valid for beta HTTP/2 load balancer types and may result in errors if used with the GA API.


securityPolicy

string

success

The security policy associated with this backend service.


sessionAffinity

string

success

Type of session affinity to use. The default is NONE. Session affinity is not applicable if the protocol is UDP.


timeoutSec

integer

success

How many seconds to wait for the backend before considering it a failed request. Default is 30 seconds. Valid range is [1, 86400].





Authors

  • Google Inc. (@googlecloudplatform)

© 2012–2018 Michael DeHaan
© 2018–2021 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/2.11/collections/google/cloud/gcp_compute_backend_service_module.html