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Showing content from http://cloud.google.com/compute/docs/reference/rest/v1/backendServices/patch below:

Method: backendServices.patch | Compute Engine Documentation

• HTTP request
• Path parameters
• Query parameters
• Request body
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• Response body
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• Authorization scopes
• IAM Permissions
• Try it!

Patches the specified BackendService resource with the data included in the request. For more information, see Backend services overview. This method supports PATCH semantics and uses the JSON merge patch format and processing rules.

PATCH https://compute.googleapis.com/compute/v1/projects/{project}/global/backendServices/{backendService}

The URL uses gRPC Transcoding syntax.

string

Project ID for this request.

string

Name of the BackendService resource to patch.

string

An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed.

For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments.

The request ID must be a valid UUID with the exception that zero UUID is not supported (00000000-0000-0000-0000-000000000000).

The request body contains data with the following structure:

{
  "kind": string,
  "id": string,
  "creationTimestamp": string,
  "name": string,
  "description": string,
  "selfLink": string,
  "backends": [
    {
      "description": string,
      "group": string,
      "balancingMode": enum,
      "maxUtilization": number,
      "maxRate": integer,
      "maxRatePerInstance": number,
      "maxRatePerEndpoint": number,
      "maxConnections": integer,
      "maxConnectionsPerInstance": integer,
      "maxConnectionsPerEndpoint": integer,
      "capacityScaler": number,
      "failover": boolean,
      "preference": enum,
      "customMetrics": [
        {
          "name": string,
          "maxUtilization": number,
          "dryRun": boolean
        }
      ]
    }
  ],
  "healthChecks": [
    string
  ],
  "timeoutSec": integer,
  "port": integer,
  "protocol": enum,
  "fingerprint": string,
  "portName": string,
  "enableCDN": boolean,
  "sessionAffinity": enum,
  "affinityCookieTtlSec": integer,
  "region": string,
  "failoverPolicy": {
    "disableConnectionDrainOnFailover": boolean,
    "dropTrafficIfUnhealthy": boolean,
    "failoverRatio": number
  },
  "loadBalancingScheme": enum,
  "connectionDraining": {
    "drainingTimeoutSec": integer
  },
  "iap": {
    "enabled": boolean,
    "oauth2ClientId": string,
    "oauth2ClientSecret": string,
    "oauth2ClientSecretSha256": string
  },
  "cdnPolicy": {
    "cacheKeyPolicy": {
      "includeProtocol": boolean,
      "includeHost": boolean,
      "includeQueryString": boolean,
      "queryStringWhitelist": [
        string
      ],
      "queryStringBlacklist": [
        string
      ],
      "includeHttpHeaders": [
        string
      ],
      "includeNamedCookies": [
        string
      ]
    },
    "signedUrlKeyNames": [
      string
    ],
    "signedUrlCacheMaxAgeSec": string,
    "requestCoalescing": boolean,
    "cacheMode": enum,
    "defaultTtl": integer,
    "maxTtl": integer,
    "clientTtl": integer,
    "negativeCaching": boolean,
    "negativeCachingPolicy": [
      {
        "code": integer,
        "ttl": integer
      }
    ],
    "bypassCacheOnRequestHeaders": [
      {
        "headerName": string
      }
    ],
    "serveWhileStale": integer
  },
  "customRequestHeaders": [
    string
  ],
  "customResponseHeaders": [
    string
  ],
  "securityPolicy": string,
  "edgeSecurityPolicy": string,
  "logConfig": {
    "enable": boolean,
    "sampleRate": number,
    "optionalMode": enum,
    "optionalFields": [
      string
    ]
  },
  "securitySettings": {
    "clientTlsPolicy": string,
    "subjectAltNames": [
      string
    ],
    "awsV4Authentication": {
      "accessKeyId": string,
      "accessKey": string,
      "accessKeyVersion": string,
      "originRegion": string
    }
  },
  "localityLbPolicy": enum,
  "consistentHash": {
    "httpCookie": {
      "name": string,
      "path": string,
      "ttl": {
        "seconds": string,
        "nanos": integer
      }
    },
    "httpHeaderName": string,
    "minimumRingSize": string
  },
  "circuitBreakers": {
    "maxRequestsPerConnection": integer,
    "maxConnections": integer,
    "maxPendingRequests": integer,
    "maxRequests": integer,
    "maxRetries": integer
  },
  "outlierDetection": {
    "consecutiveErrors": integer,
    "interval": {
      "seconds": string,
      "nanos": integer
    },
    "baseEjectionTime": {
      "seconds": string,
      "nanos": integer
    },
    "maxEjectionPercent": integer,
    "enforcingConsecutiveErrors": integer,
    "enforcingSuccessRate": integer,
    "successRateMinimumHosts": integer,
    "successRateRequestVolume": integer,
    "successRateStdevFactor": integer,
    "consecutiveGatewayFailure": integer,
    "enforcingConsecutiveGatewayFailure": integer
  },
  "network": string,
  "subsetting": {
    "policy": enum
  },
  "connectionTrackingPolicy": {
    "trackingMode": enum,
    "connectionPersistenceOnUnhealthyBackends": enum,
    "idleTimeoutSec": integer,
    "enableStrongAffinity": boolean
  },
  "maxStreamDuration": {
    "seconds": string,
    "nanos": integer
  },
  "compressionMode": enum,
  "serviceLbPolicy": string,
  "serviceBindings": [
    string
  ],
  "localityLbPolicies": [
    {
      "policy": {
        "name": enum
      },
      "customPolicy": {
        "name": string,
        "data": string
      }
    }
  ],
  "externalManagedMigrationState": enum,
  "externalManagedMigrationTestingPercentage": number,
  "ipAddressSelectionPolicy": enum,
  "metadatas": {
    string: string,
    ...
  },
  "haPolicy": {
    "fastIPMove": enum,
    "leader": {
      "backendGroup": string,
      "networkEndpoint": {
        "instance": string
      }
    }
  },
  "usedBy": [
    {
      "reference": string
    }
  ],
  "strongSessionAffinityCookie": {
    "name": string,
    "path": string,
    "ttl": {
      "seconds": string,
      "nanos": integer
    }
  },
  "tlsSettings": {
    "sni": string,
    "subjectAltNames": [
      {

        // Union field dns_name_or_uniform_resource_identifier can be only one of the
        // following:
        "dnsName": string,
        "uniformResourceIdentifier": string
        // End of list of possible types for union field
        // dns_name_or_uniform_resource_identifier.
      }
    ],
    "authenticationConfig": string
  },
  "customMetrics": [
    {
      "name": string,
      "dryRun": boolean
    }
  ],
  "params": {
    "resourceManagerTags": {
      string: string,
      ...
    }
  }
}

string

[Output Only] Type of resource. Always compute#backendService for backend services.

string (uint64 format)

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

string

[Output Only] Creation timestamp in RFC3339 text format.

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.

string

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

string

[Output Only] Server-defined URL for the resource.

object

The list of backends that serve this BackendService.

string

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

string

The fully-qualified URL of an instance group or network endpoint group (NEG) resource. To determine what types of backends a load balancer supports, see the Backend services overview.

You must use the fully-qualified URL (starting with https://www.googleapis.com/) to specify the instance group or NEG. Partial URLs are not supported.

If haPolicy is specified, backends must refer to NEG resources of type GCE_VM_IP.

Authorization requires one or more of the following IAM permissions on the specified resource group:

• compute.globalNetworkEndpointGroups.use
• compute.instanceGroups.use
• compute.networkEndpointGroups.use
• compute.regionalNetworkEndpointGroups.use

enum

Specifies how to determine whether the backend of a load balancer can handle additional traffic or is fully loaded. For usage guidelines, see Connection balancing mode.

Backends must use compatible balancing modes. For more information, see Supported balancing modes and target capacity settings and Restrictions and guidance for instance groups.

Note: Currently, if you use the API to configure incompatible balancing modes, the configuration might be accepted even though it has no impact and is ignored. Specifically, Backend.maxUtilization is ignored when Backend.balancingMode is RATE. In the future, this incompatible combination will be rejected.

number

Optional parameter to define a target capacity for the UTILIZATION balancing mode. The valid range is [0.0, 1.0].

For usage guidelines, see Utilization balancing mode.

integer

Defines a maximum number of HTTP requests per second (RPS). For usage guidelines, see Rate balancing mode and Utilization balancing mode.

Not available if the backend's balancingMode is CONNECTION.

number

Defines a maximum target for requests per second (RPS). For usage guidelines, see Rate balancing mode and Utilization balancing mode.

Not available if the backend's balancingMode is CONNECTION.

number

Defines a maximum target for requests per second (RPS). For usage guidelines, see Rate balancing mode and Utilization balancing mode.

Not available if the backend's balancingMode is CONNECTION.

integer

Defines a target maximum number of simultaneous connections. For usage guidelines, see Connection balancing mode and Utilization balancing mode. Not available if the backend's balancingMode is RATE.

integer

Defines a target maximum number of simultaneous connections. For usage guidelines, see Connection balancing mode and Utilization balancing mode.

Not available if the backend's balancingMode is RATE.

integer

Defines a target maximum number of simultaneous connections. For usage guidelines, see Connection balancing mode and Utilization balancing mode.

Not available if the backend's balancingMode is RATE.

number

A multiplier applied to the backend's target capacity of its balancing mode. The default value is 1, which means the group serves 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. The valid ranges are 0.0 and [0.1,1.0]. You cannot configure a setting larger than 0 and smaller than 0.1. You cannot configure a setting of 0 when there is only one backend attached to the backend service.

Not available with backends that don't support using a balancingMode. This includes backends such as global internet NEGs, regional serverless NEGs, and PSC NEGs.

boolean

This field designates whether this is a failover backend. More than one failover backend can be configured for a given BackendService.

enum

This field indicates whether this backend should be fully utilized before sending traffic to backends with default preference. The possible values are:

• PREFERRED: Backends with this preference level will be filled up to their capacity limits first, based on RTT.
• DEFAULT: If preferred backends don't have enough capacity, backends in this layer would be used and traffic would be assigned based on the load balancing algorithm you use. This is the default

object

backendServices.list of custom metrics that are used for CUSTOM_METRICS BalancingMode.

string

Name of a custom utilization signal. The name must be 1-64 characters long and match the regular expression a-z? which means that the first character must be a lowercase letter, and all following characters must be a dash, period, underscore, lowercase letter, or digit, except the last character, which cannot be a dash, period, or underscore. For usage guidelines, see Custom Metrics balancing mode. This field can only be used for a global or regional backend service with the loadBalancingScheme set to EXTERNAL_MANAGED, INTERNAL_MANAGED INTERNAL_SELF_MANAGED.

number

Optional parameter to define a target utilization for the Custom Metrics balancing mode. The valid range is [0.0, 1.0].

boolean

If true, the metric data is collected and reported to Cloud Monitoring, but is not used for load balancing.

string

The list of URLs to the healthChecks, httpHealthChecks (legacy), or httpsHealthChecks (legacy) resource for health checking this backend service. Not all backend services support legacy health checks. See Load balancer guide. Currently, at most one health check can be specified for each backend service. Backend services with instance group or zonal NEG backends must have a health check unless haPolicy is specified. Backend services with internet or serverless NEG backends must not have a health check.

healthChecks[] cannot be specified with haPolicy.

Authorization requires one or more of the following IAM permissions on the specified resource healthChecks:

• compute.healthChecks.useReadOnly
• compute.httpHealthChecks.useReadOnly
• compute.httpsHealthChecks.useReadOnly

integer

The backend service timeout has a different meaning depending on the type of load balancer. For more information see, Backend service settings. The default is 30 seconds. The full range of timeout values allowed goes from 1 through 2,147,483,647 seconds.

This value can be overridden in the PathMatcher configuration of the UrlMap that references this backend service.

Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true. Instead, use maxStreamDuration.

integer

Deprecated in favor of portName. The TCP port to connect on the backend. The default value is 80. For internal passthrough Network Load Balancers and external passthrough Network Load Balancers, omit port.

enum

The protocol this BackendService uses to communicate with backends.

Possible values are HTTP, HTTPS, HTTP2, H2C, TCP, SSL, UDP or GRPC. depending on the chosen load balancer or Traffic Director configuration. Refer to the documentation for the load balancers or for Traffic Director for more information.

Must be set to GRPC when the backend service is referenced by a URL map that is bound to target gRPC proxy.

string (bytes format)

Fingerprint of this resource. A hash of the contents stored in this object. This field is used in optimistic locking. This field will be ignored when inserting a BackendService. An up-to-date fingerprint must be provided in order to update the BackendService, otherwise the request will fail with error 412 conditionNotMet.

To see the latest fingerprint, make a get() request to retrieve a BackendService.

A base64-encoded string.

string

A named port on a backend instance group representing the port for communication to the backend VMs in that group. The named port must be defined on each backend instance group. This parameter has no meaning if the backends are NEGs. For internal passthrough Network Load Balancers and external passthrough Network Load Balancers, omit portName.

boolean

If true, enables Cloud CDN for the backend service of a global external Application Load Balancer.

enum

Type of session affinity to use. The default is NONE.

Only NONE and HEADER_FIELD are supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.

For more details, see: Session Affinity.

sessionAffinity cannot be specified with haPolicy.

integer

Lifetime of cookies in seconds. This setting is applicable to Application Load Balancers and Traffic Director and requires GENERATED_COOKIE or HTTP_COOKIE session affinity.

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 is two weeks (1,209,600).

Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.

string

[Output Only] URL of the region where the regional backend service resides. This field is not applicable to global backend services. You must specify this field as part of the HTTP request URL. It is not settable as a field in the request body.

object

Requires at least one backend instance group to be defined as a backup (failover) backend. For load balancers that have configurable failover: Internal passthrough Network Load Balancers and external passthrough Network Load Balancers.

failoverPolicy cannot be specified with haPolicy.

boolean

This can be set to true only if the protocol is TCP.

The default is false.

boolean

If set to true, connections to the load balancer are dropped when all primary and all backup backend VMs are unhealthy.If set to false, connections are distributed among all primary VMs when all primary and all backup backend VMs are unhealthy. For load balancers that have configurable failover: Internal passthrough Network Load Balancers and external passthrough Network Load Balancers. The default is false.

number

The value of the field must be in the range [0, 1]. If the value is 0, the load balancer performs a failover when the number of healthy primary VMs equals zero. For all other values, the load balancer performs a failover when the total number of healthy primary VMs is less than this ratio. For load balancers that have configurable failover: Internal TCP/UDP Load Balancing and external TCP/UDP Load Balancing.

enum

Specifies the load balancer type. A backend service created for one type of load balancer cannot be used with another. For more information, refer to Choosing a load balancer.

object

connectionDraining cannot be specified with haPolicy.

integer

Configures a duration timeout for existing requests on a removed backend instance. For supported load balancers and protocols, as described in Enabling connection draining.

object

The configurations for Identity-Aware Proxy on this resource. Not available for internal passthrough Network Load Balancers and external passthrough Network Load Balancers.

boolean

Whether the serving infrastructure will authenticate and authorize all incoming requests.

string

OAuth2 client ID to use for the authentication flow.

string

OAuth2 client secret to use for the authentication flow. For security reasons, this value cannot be retrieved via the API. Instead, the SHA-256 hash of the value is returned in the oauth2ClientSecretSha256 field.

@InputOnly

string

[Output Only] SHA256 hash value for the field oauth2ClientSecret above.

object

Cloud CDN configuration for this BackendService. Only available for specified load balancer types.

object

The CacheKeyPolicy for this CdnPolicy.

boolean

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

boolean

If true, requests to different hosts will be cached separately.

boolean

If true, include query string parameters in the cache key according to queryStringWhitelist and queryStringBlacklist. If neither is set, the entire query string will be included. If false, the query string will be excluded from the cache key entirely.

string

Names of query string parameters to include in cache keys. All other parameters will be excluded. Either specify queryStringWhitelist or queryStringBlacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.

string

Names of query string parameters to exclude in cache keys. All other parameters will be included. Either specify queryStringWhitelist or queryStringBlacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.

string

Allows HTTP request headers (by name) to be used in the cache key.

string

Allows HTTP cookies (by name) to be used in the cache key. The name=value pair will be used in the cache key Cloud CDN generates.

string

[Output Only] Names of the keys for signing request URLs.

string (int64 format)

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

boolean

If true then Cloud CDN will combine multiple concurrent cache fill requests into a small number of requests to the origin.

enum

Specifies the cache setting for all responses from this backend. The possible values are: USE_ORIGIN_HEADERS Requires the origin to set valid caching headers to cache content. Responses without these headers will not be cached at Google's edge, and will require a full trip to the origin on every request, potentially impacting performance and increasing load on the origin server. FORCE_CACHE_ALL Cache all content, ignoring any "private", "no-store" or "no-cache" directives in Cache-Control response headers. Warning: this may result in Cloud CDN caching private, per-user (user identifiable) content. CACHE_ALL_STATIC Automatically cache static content, including common image formats, media (video and audio), and web assets (JavaScript and CSS). Requests and responses that are marked as uncacheable, as well as dynamic content (including HTML), will not be cached.

If no value is provided for cdnPolicy.cacheMode, it defaults to CACHE_ALL_STATIC.

integer

Specifies the default TTL for cached content served by this origin for responses that do not have an existing valid TTL (max-age or s-maxage). Setting a TTL of "0" means "always revalidate". The value of defaultTTL cannot be set to a value greater than that of maxTTL, but can be equal. When the cacheMode is set to FORCE_CACHE_ALL, the defaultTTL will overwrite the TTL set in all responses. The maximum allowed value is 31,622,400s (1 year), noting that infrequently accessed objects may be evicted from the cache before the defined TTL.

integer

Specifies the maximum allowed TTL for cached content served by this origin. Cache directives that attempt to set a max-age or s-maxage higher than this, or an Expires header more than maxTTL seconds in the future will be capped at the value of maxTTL, as if it were the value of an s-maxage Cache-Control directive. Headers sent to the client will not be modified. Setting a TTL of "0" means "always revalidate". The maximum allowed value is 31,622,400s (1 year), noting that infrequently accessed objects may be evicted from the cache before the defined TTL.

integer

Specifies a separate client (e.g. browser client) maximum TTL. This is used to clamp the max-age (or Expires) value sent to the client. With FORCE_CACHE_ALL, the lesser of clientTtl and defaultTtl is used for the response max-age directive, along with a "public" directive. For cacheable content in CACHE_ALL_STATIC mode, clientTtl clamps the max-age from the origin (if specified), or else sets the response max-age directive to the lesser of the clientTtl and defaultTtl, and also ensures a "public" cache-control directive is present. If a client TTL is not specified, a default value (1 hour) will be used. The maximum allowed value is 31,622,400s (1 year).

boolean

Negative caching allows per-status code TTLs to be set, in order to apply fine-grained caching for common errors or redirects. This can reduce the load on your origin and improve end-user experience by reducing response latency. When the cache mode is set to CACHE_ALL_STATIC or USE_ORIGIN_HEADERS, negative caching applies to responses with the specified response code that lack any Cache-Control, Expires, or Pragma: no-cache directives. When the cache mode is set to FORCE_CACHE_ALL, negative caching applies to all responses with the specified response code, and override any caching headers. By default, Cloud CDN will apply the following default TTLs to these status codes: HTTP 300 (Multiple Choice), 301, 308 (Permanent Redirects): 10m HTTP 404 (Not Found), 410 (Gone), 451 (Unavailable For Legal Reasons): 120s HTTP 405 (Method Not Found), 421 (Misdirected Request), 501 (Not Implemented): 60s. These defaults can be overridden in negativeCachingPolicy.

object

Sets a cache TTL for the specified HTTP status code. negativeCaching must be enabled to configure negativeCachingPolicy. Omitting the policy and leaving negativeCaching enabled will use Cloud CDN's default cache TTLs. Note that when specifying an explicit negativeCachingPolicy, you should take care to specify a cache TTL for all response codes that you wish to cache. Cloud CDN will not apply any default negative caching when a policy exists.

integer

The HTTP status code to define a TTL against. Only HTTP status codes 300, 301, 302, 307, 308, 404, 405, 410, 421, 451 and 501 are can be specified as values, and you cannot specify a status code more than once.

integer

The TTL (in seconds) for which to cache responses with the corresponding status code. The maximum allowed value is 1800s (30 minutes), noting that infrequently accessed objects may be evicted from the cache before the defined TTL.

object

Bypass the cache when the specified request headers are matched - e.g. Pragma or Authorization headers. Up to 5 headers can be specified. The cache is bypassed for all cdnPolicy.cacheMode settings.

string

The header field name to match on when bypassing cache. Values are case-insensitive.

integer

Serve existing content from the cache (if available) when revalidating content with the origin, or when an error is encountered when refreshing the cache. This setting defines the default "max-stale" duration for any cached responses that do not specify a max-stale directive. Stale responses that exceed the TTL configured here will not be served. The default limit (max-stale) is 86400s (1 day), which will allow stale content to be served up to this limit beyond the max-age (or s-maxage) of a cached response. The maximum allowed value is 604800 (1 week). Set this to zero (0) to disable serve-while-stale.

string

Headers that the load balancer adds to proxied requests. See Creating custom headers.

string

Headers that the load balancer adds to proxied responses. See Creating custom headers.

string

[Output Only] The resource URL for the security policy associated with this backend service.

string

[Output Only] The resource URL for the edge security policy associated with this backend service.

object

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.

boolean

Denotes whether to enable logging for the load balancer traffic served by this backend service. The default value is false.

number

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.

enum

This field can only be specified if logging is enabled for this backend service. Configures whether all, none or a subset of optional fields should be added to the reported logs. One of [INCLUDE_ALL_OPTIONAL, EXCLUDE_ALL_OPTIONAL, CUSTOM]. Default is EXCLUDE_ALL_OPTIONAL.

string

This field can only be specified if logging is enabled for this backend service and "logConfig.optionalMode" was set to CUSTOM. Contains a list of optional fields you want to include in the logs. For example: serverInstance, serverGkeDetails.cluster, serverGkeDetails.pod.podNamespace

object

This field specifies the security settings that apply to this backend service. This field is applicable to a global backend service with the loadBalancingScheme set to INTERNAL_SELF_MANAGED.

string

Optional. A URL referring to a networksecurity.ClientTlsPolicy resource that describes how clients should authenticate with this service's backends.

clientTlsPolicy only applies to a global BackendService with the loadBalancingScheme set to INTERNAL_SELF_MANAGED.

If left blank, communications are not encrypted.

Authorization requires the following IAM permission on the specified resource clientTlsPolicy:

• networksecurity.clientTlsPolicies.use

string

Optional. A list of Subject Alternative Names (SANs) that the client verifies during a mutual TLS handshake with an server/endpoint for this BackendService. When the server presents its X.509 certificate to the client, the client inspects the certificate's subjectAltName field. If the field contains one of the specified values, the communication continues. Otherwise, it fails. This additional check enables the client to verify that the server is authorized to run the requested service.

Note that the contents of the server certificate's subjectAltName field are configured by the Public Key Infrastructure which provisions server identities.

Only applies to a global BackendService with loadBalancingScheme set to INTERNAL_SELF_MANAGED. Only applies when BackendService has an attached clientTlsPolicy with clientCertificate (mTLS mode).

object

The configuration needed to generate a signature for access to private storage buckets that support AWS's Signature Version 4 for authentication. Allowed only for INTERNET_IP_PORT and INTERNET_FQDN_PORT NEG backends.

string

The identifier of an access key used for s3 bucket authentication.

string

The access key used for s3 bucket authentication. Required for updating or creating a backend that uses AWS v4 signature authentication, but will not be returned as part of the configuration when queried with a REST API GET request.

@InputOnly

string

The optional version identifier for the access key. You can use this to keep track of different iterations of your access key.

string

The name of the cloud region of your origin. This is a free-form field with the name of the region your cloud uses to host your origin. For example, "us-east-1" for AWS or "us-ashburn-1" for OCI.

enum

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. This is the default.
• 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, see https://ai.google/research/pubs/pub44824
• WEIGHTED_ROUND_ROBIN: Per-endpoint Weighted Round Robin Load Balancing using weights computed from Backend reported Custom Metrics. If set, the Backend Service responses are expected to contain non-standard HTTP response header field Endpoint-Load-Metrics. The reported metrics to use for computing the weights are specified via the customMetrics field.

This field is applicable to either:

• A regional backend service with the serviceProtocol set to HTTP, HTTPS, HTTP2 or H2C, and loadBalancingScheme set to INTERNAL_MANAGED.
• A global backend service with the loadBalancingScheme set to INTERNAL_SELF_MANAGED, INTERNAL_MANAGED, or EXTERNAL_MANAGED.

If sessionAffinity is not configured—that is, if session affinity remains at the default value of NONE—then the default value for localityLbPolicy is ROUND_ROBIN. If session affinity is set to a value other than NONE, then the default value for localityLbPolicy is MAGLEV.

Only ROUND_ROBIN and RING_HASH are supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.

localityLbPolicy cannot be specified with haPolicy.

object

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 is only applicable when localityLbPolicy is set to MAGLEV or RING_HASH.

This field is applicable to either:

• A regional backend service with the serviceProtocol set to HTTP, HTTPS, HTTP2 or H2C, and loadBalancingScheme set to INTERNAL_MANAGED.
• A global backend service with the loadBalancingScheme set to INTERNAL_SELF_MANAGED.

object

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.

Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.

string

Name of the cookie.

string

Path to set for the cookie.

object

Lifetime of the cookie.

string (int64 format)

Span of time at a resolution of a second. Must be from 0 to 315,576,000,000 inclusive. Note: these bounds are computed from: 60 sec/min * 60 min/hr * 24 hr/day * 365.25 days/year * 10000 years

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.

string

The hash based on the value of the specified header field. This field is applicable if the sessionAffinity is set to HEADER_FIELD.

string (int64 format)

The minimum number of virtual nodes to use for the hash ring. Defaults to 1024. 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.

object

integer

Maximum requests for a single connection to the backend service. 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.

Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.

integer

The maximum number of connections to the backend service. If not specified, there is no limit.

Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.

integer

The maximum number of pending requests allowed to the backend service. If not specified, there is no limit.

Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.

integer

The maximum number of parallel requests that allowed to the backend service. If not specified, there is no limit.

integer

The maximum number of parallel retries allowed to the backend cluster. If not specified, the default is 1.

Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.

object

Settings controlling the ejection of unhealthy backend endpoints from the load balancing pool of each individual proxy instance that processes the traffic for the given backend service. If not set, this feature is considered disabled.

Results of the outlier detection algorithm (ejection of endpoints from the load balancing pool and returning them back to the pool) are executed independently by each proxy instance of the load balancer. In most cases, more than one proxy instance handles the traffic received by a backend service. Thus, it is possible that an unhealthy endpoint is detected and ejected by only some of the proxies, and while this happens, other proxies may continue to send requests to the same unhealthy endpoint until they detect and eject the unhealthy endpoint.

Applicable backend endpoints can be:

• VM instances in an Instance Group
• Endpoints in a Zonal NEG (GCE_VM_IP, GCE_VM_IP_PORT)
• Endpoints in a Hybrid Connectivity NEG (NON_GCP_PRIVATE_IP_PORT)
• Serverless NEGs, that resolve to Cloud Run, App Engine, or Cloud Functions Services
• Private Service Connect NEGs, that resolve to Google-managed regional API endpoints or managed services published using Private Service Connect

Applicable backend service types can be:

• A global backend service with the loadBalancingScheme set to INTERNAL_SELF_MANAGED or EXTERNAL_MANAGED.
• A regional backend service with the serviceProtocol set to HTTP, HTTPS, HTTP2 or H2C, and loadBalancingScheme set to INTERNAL_MANAGED or EXTERNAL_MANAGED. Not supported for Serverless NEGs.

Not supported when the backend service is referenced by a URL map that is bound to target gRPC proxy that has validateForProxyless field set to true.

integer

Number of consecutive errors before a backend endpoint is ejected from the load balancing pool. When the backend endpoint is accessed over HTTP, a 5xx return code qualifies as an error. Defaults to 5.

object

Time interval between ejection analysis sweeps. This can result in both new ejections and backend endpoints being returned to service. The interval is equal to the number of seconds as defined in outlierDetection.interval.seconds plus the number of nanoseconds as defined in outlierDetection.interval.nanos. Defaults to 1 second.

string (int64 format)

Span of time at a resolution of a second. Must be from 0 to 315,576,000,000 inclusive. Note: these bounds are computed from: 60 sec/min * 60 min/hr * 24 hr/day * 365.25 days/year * 10000 years

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.

object

The base time that a backend endpoint is ejected for. Defaults to 30000ms or 30s.

After a backend endpoint is returned back to the load balancing pool, it can be ejected again in another ejection analysis. Thus, the total ejection time is equal to the base ejection time multiplied by the number of times the backend endpoint has been ejected. Defaults to 30000ms or 30s.

string (int64 format)

Span of time at a resolution of a second. Must be from 0 to 315,576,000,000 inclusive. Note: these bounds are computed from: 60 sec/min * 60 min/hr * 24 hr/day * 365.25 days/year * 10000 years

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.

integer

Maximum percentage of backend endpoints in the load balancing pool for the backend service that can be ejected if the ejection conditions are met. Defaults to 50%.

integer

The percentage chance that a backend endpoint will be 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 0.

integer

The percentage chance that a backend endpoint will be 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.

Not supported when the backend service uses Serverless NEG.

integer

The number of backend endpoints in the load balancing pool that must have enough request volume to detect success rate outliers. If the number of backend endpoints is fewer than this setting, outlier detection via success rate statistics is not performed for any backend endpoint in the load balancing pool. Defaults to 5.

Not supported when the backend service uses Serverless NEG.

integer

The minimum number of total requests that must be collected in one interval (as defined by the interval duration above) to include this backend endpoint 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 backend endpoint. Defaults to 100.

Not supported when the backend service uses Serverless NEG.

integer

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 * successRateStdevFactor). 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.

Not supported when the backend service uses Serverless NEG.

integer

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 3.

integer

The percentage chance that a backend endpoint will be 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 100.

string

The URL of the network to which this backend service belongs.

This field must be set for Internal Passthrough Network Load Balancers when the haPolicy is enabled, and for External Passthrough Network Load Balancers when the haPolicy fastIpMove is enabled.

This field can only be specified when the load balancing scheme is set to INTERNAL, or when the load balancing scheme is set to EXTERNAL and haPolicy fastIpMove is enabled.

object

subsetting cannot be specified with haPolicy.

enum

object

Connection Tracking configuration for this BackendService. Connection tracking policy settings are only available for external passthrough Network Load Balancers and internal passthrough Network Load Balancers.

connectionTrackingPolicy cannot be specified with haPolicy.

enum

Specifies the key used for connection tracking. There are two options:

• PER_CONNECTION: This is the default mode. The Connection Tracking is performed as per the Connection Key (default Hash Method) for the specific protocol.
• PER_SESSION: The Connection Tracking is performed as per the configured Session Affinity. It matches the configured Session Affinity.

For more details, see Tracking Mode for Network Load Balancing and Tracking Mode for Internal TCP/UDP Load Balancing.

enum

Specifies connection persistence when backends are unhealthy. The default value is DEFAULT_FOR_PROTOCOL.

If set to DEFAULT_FOR_PROTOCOL, the existing connections persist on unhealthy backends only for connection-oriented protocols (TCP and SCTP) and only if the Tracking Mode is PER_CONNECTION (default tracking mode) or the Session Affinity is configured for 5-tuple. They do not persist for UDP.

If set to NEVER_PERSIST, after a backend becomes unhealthy, the existing connections on the unhealthy backend are never persisted on the unhealthy backend. They are always diverted to newly selected healthy backends (unless all backends are unhealthy).

If set to ALWAYS_PERSIST, existing connections always persist on unhealthy backends regardless of protocol and session affinity. It is generally not recommended to use this mode overriding the default.

For more details, see Connection Persistence for Network Load Balancing and Connection Persistence for Internal TCP/UDP Load Balancing.

integer

Specifies how long to keep a Connection Tracking entry while there is no matching traffic (in seconds).

For internal passthrough Network Load Balancers:

• The minimum (default) is 10 minutes and the maximum is 16 hours.
• It can be set only if Connection Tracking is less than 5-tuple (i.e. Session Affinity is CLIENT_IP_NO_DESTINATION, CLIENT_IP or CLIENT_IP_PROTO, and Tracking Mode is PER_SESSION).

For external passthrough Network Load Balancers the default is 60 seconds. This option is not available publicly.

boolean

Enable Strong Session Affinity for external passthrough Network Load Balancers. This option is not available publicly.

object

Specifies the default maximum duration (timeout) for streams to this service. Duration is computed from the beginning of the stream until the response has been completely processed, including all retries. A stream that does not complete in this duration is closed.

If not specified, there will be no timeout limit, i.e. the maximum duration is infinite.

This value can be overridden in the PathMatcher configuration of the UrlMap that references this backend service.

This field is only allowed when the loadBalancingScheme of the backend service is INTERNAL_SELF_MANAGED.

string (int64 format)

Span of time at a resolution of a second. Must be from 0 to 315,576,000,000 inclusive. Note: these bounds are computed from: 60 sec/min * 60 min/hr * 24 hr/day * 365.25 days/year * 10000 years

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.

enum

Compress text responses using Brotli or gzip compression, based on the client's Accept-Encoding header.

string

URL to networkservices.ServiceLbPolicy resource.

Can only be set if load balancing scheme is EXTERNAL, EXTERNAL_MANAGED, INTERNAL_MANAGED or INTERNAL_SELF_MANAGED and the scope is global.

string

URLs of networkservices.ServiceBinding resources.

Can only be set if load balancing scheme is INTERNAL_SELF_MANAGED. If set, lists of backends and health checks must be both empty.

object

A list of locality load-balancing policies to be used in order of preference. When you use localityLbPolicies, you must set at least one value for either the localityLbPolicies[].policy or the localityLbPolicies[].customPolicy field. localityLbPolicies overrides any value set in the localityLbPolicy field.

For an example of how to use this field, see Define a list of preferred policies.

Caution: This field and its children are intended for use in a service mesh that includes gRPC clients only. Envoy proxies can't use backend services that have this configuration.

object

enum

The name of a locality load-balancing policy. Valid values include ROUND_ROBIN and, for Java clients, LEAST_REQUEST. For information about these values, see the description of localityLbPolicy.

Do not specify the same policy more than once for a backend. If you do, the configuration is rejected.

object

string

Identifies the custom policy.

The value should match the name of a custom implementation registered on the gRPC clients. It should follow protocol buffer message naming conventions and include the full path (for example, myorg.CustomLbPolicy). The maximum length is 256 characters.

Do not specify the same custom policy more than once for a backend. If you do, the configuration is rejected.

For an example of how to use this field, see Use a custom policy.

string

An optional, arbitrary JSON object with configuration data, understood by a locally installed custom policy implementation.

enum

Specifies the canary migration state. Possible values are PREPARE, TEST_BY_PERCENTAGE, and TEST_ALL_TRAFFIC.

To begin the migration from EXTERNAL to EXTERNAL_MANAGED, the state must be changed to PREPARE. The state must be changed to TEST_ALL_TRAFFIC before the loadBalancingScheme can be changed to EXTERNAL_MANAGED. Optionally, the TEST_BY_PERCENTAGE state can be used to migrate traffic by percentage using externalManagedMigrationTestingPercentage.

Rolling back a migration requires the states to be set in reverse order. So changing the scheme from EXTERNAL_MANAGED to EXTERNAL requires the state to be set to TEST_ALL_TRAFFIC at the same time. Optionally, the TEST_BY_PERCENTAGE state can be used to migrate some traffic back to EXTERNAL or PREPARE can be used to migrate all traffic back to EXTERNAL.

number

Determines the fraction of requests that should be processed by the Global external Application Load Balancer.

The value of this field must be in the range [0, 100].

Session affinity options will slightly affect this routing behavior, for more details, see: Session Affinity.

This value can only be set if the loadBalancingScheme in the BackendService is set to EXTERNAL (when using the classic Application Load Balancer) and the migration state is TEST_BY_PERCENTAGE.

enum

Specifies a preference for traffic sent from the proxy to the backend (or from the client to the backend for proxyless gRPC). The possible values are:

• IPV4_ONLY: Only send IPv4 traffic to the backends of the backend service (Instance Group, Managed Instance Group, Network Endpoint Group), regardless of traffic from the client to the proxy. Only IPv4 health checks are used to check the health of the backends. This is the default setting.
• PREFER_IPV6: Prioritize the connection to the endpoint's IPv6 address over its IPv4 address (provided there is a healthy IPv6 address).
• IPV6_ONLY: Only send IPv6 traffic to the backends of the backend service (Instance Group, Managed Instance Group, Network Endpoint Group), regardless of traffic from the client to the proxy. Only IPv6 health checks are used to check the health of the backends.

This field is applicable to either:

• Advanced global external Application Load Balancer (load balancing scheme EXTERNAL_MANAGED),
• Regional external Application Load Balancer,
• Internal proxy Network Load Balancer (load balancing scheme INTERNAL_MANAGED),
• Regional internal Application Load Balancer (load balancing scheme INTERNAL_MANAGED),
• Traffic Director with Envoy proxies and proxyless gRPC (load balancing scheme INTERNAL_SELF_MANAGED).

map (key: string, value: string)

Deployment metadata associated with the resource to be set by a GKE hub controller and read by the backend RCTH

object

Configures self-managed High Availability (HA) for External and Internal Protocol Forwarding.

The backends of this regional backend service must only specify zonal network endpoint groups (NEGs) of type GCE_VM_IP.

When haPolicy is set for an Internal Passthrough Network Load Balancer, the regional backend service must set the network field. All zonal NEGs must belong to the same network. However, individual NEGs can belong to different subnetworks of that network.

When haPolicy is specified, the set of attached network endpoints across all backends comprise an High Availability domain from which one endpoint is selected as the active endpoint (the leader) that receives all traffic.

haPolicy can be added only at backend service creation time. Once set up, it cannot be deleted.

Note that haPolicy is not for load balancing, and therefore cannot be specified with sessionAffinity, connectionTrackingPolicy, and failoverPolicy.

haPolicy requires customers to be responsible for tracking backend endpoint health and electing a leader among the healthy endpoints. Therefore, haPolicy cannot be specified with healthChecks.

haPolicy can only be specified for External Passthrough Network Load Balancers and Internal Passthrough Network Load Balancers.

enum

Specifies whether fast IP move is enabled, and if so, the mechanism to achieve it.

Supported values are:

• DISABLED: Fast IP Move is disabled. You can only use the haPolicy.leader API to update the leader.
• >GARP_RA: Provides a method to very quickly define a new network endpoint as the leader. This method is faster than updating the leader using the haPolicy.leader API. Fast IP move works as follows: The VM hosting the network endpoint that should become the new leader sends either a Gratuitous ARP (GARP) packet (IPv4) or an ICMPv6 Router Advertisement(RA) packet (IPv6). Google Cloud immediately but temporarily associates the forwarding rule IP address with that VM, and both new and in-flight packets are quickly delivered to that VM.

Note the important properties of the Fast IP Move functionality:

• The GARP/RA-initiated re-routing stays active for approximately 20 minutes. After triggering fast failover, you must also appropriately set the haPolicy.leader.
• The new leader instance should continue to send GARP/RA packets periodically every 10 seconds until at least 10 minutes after updating the haPolicy.leader (but stop immediately if it is no longer the leader).
• After triggering a fast failover, we recommend that you wait at least 3 seconds before sending another GARP/RA packet from a different VM instance to avoid race conditions.
• Don't send GARP/RA packets from different VM instances at the same time. If multiple instances continue to send GARP/RA packets, traffic might be routed to different destinations in an alternating order. This condition ceases when a single instance issues a GARP/RA packet.
• The GARP/RA request always takes priority over the leader API. Using the haPolicy.leader API to change the leader to a different instance will have no effect until the GARP/RA request becomes inactive.
• The GARP/RA packets should follow the GARP/RA Packet Specifications..
• When multiple forwarding rules refer to a regional backend service, you need only send a GARP or RA packet for a single forwarding rule virtual IP. The virtual IPs for all forwarding rules targeting the same backend service will also be moved to the sender of the GARP or RA packet.

The following are the Fast IP Move limitations (that is, when fastIPMove is not DISABLED):

• Multiple forwarding rules cannot use the same IP address if one of them refers to a regional backend service with fastIPMove.
• The regional backend service must set the network field, and all NEGs must belong to that network. However, individual NEGs can belong to different subnetworks of that network.
• The maximum number of network endpoints across all backends of a backend service with fastIPMove is 32.
• The maximum number of backend services with fastIPMove that can have the same network endpoint attached to one of its backends is 64.
• The maximum number of backend services with fastIPMove in a VPC in a region is 64.
• The network endpoints that are attached to a backend of a backend service with fastIPMove cannot resolve to Gen3+ machines for IPv6.
• Traffic directed to the leader by a static route next hop will not be redirected to a new leader by fast failover. Such traffic will only be redirected once an haPolicy.leader update has taken effect. Only traffic to the forwarding rule's virtual IP will be redirected to a new leader by fast failover.

By default, fastIpMove is set to DISABLED.

object

Selects one of the network endpoints attached to the backend NEGs of this service as the active endpoint (the leader) that receives all traffic.

When the leader changes, there is no connection draining to persist existing connections on the old leader.

You are responsible for selecting a suitable endpoint as the leader. For example, preferring a healthy endpoint over unhealthy ones. Note that this service does not track backend endpoint health, and selects the configured leader unconditionally.

string

A fully-qualified URL (starting with https://www.googleapis.com/) of the zonal Network Endpoint Group (NEG) with GCE_VM_IP endpoints that the leader is attached to.

The leader's backendGroup must already be specified as a backend of this backend service. Removing a backend that is designated as the leader's backendGroup is not permitted.

Authorization requires the following IAM permission on the specified resource backendGroup:

• compute.networkEndpointGroups.use

object

The network endpoint within the leader.backendGroup that is designated as the leader.

This network endpoint cannot be detached from the NEG specified in the haPolicy.leader.backendGroup until the leader is updated with another network endpoint, or the leader is removed from the haPolicy.

string

The name of the VM instance of the leader network endpoint. The instance must already be attached to the NEG specified in the haPolicy.leader.backendGroup.

The name must be 1-63 characters long, and comply with RFC1035. Authorization requires the following IAM permission on the specified resource instance: compute.instances.use

Authorization requires the following IAM permission on the specified resource instance:

• compute.instances.use

object

[Output Only] backendServices.list of resources referencing given backend service.

string

[Output Only] Server-defined URL for resources referencing given BackendService like UrlMaps, TargetTcpProxies, TargetSslProxies and ForwardingRule.

object

Describes the HTTP cookie used for stateful session affinity. This field is applicable and required if the sessionAffinity is set to STRONG_COOKIE_AFFINITY.

string

Name of the cookie.

string

Path to set for the cookie.

object

Lifetime of the cookie.

string (int64 format)

Span of time at a resolution of a second. Must be from 0 to 315,576,000,000 inclusive. Note: these bounds are computed from: 60 sec/min * 60 min/hr * 24 hr/day * 365.25 days/year * 10000 years

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.

object

Configuration for Backend Authenticated TLS and mTLS. May only be specified when the backend protocol is SSL, HTTPS or HTTP2.

string

Server Name Indication - see RFC3546 section 3.1. If set, the load balancer sends this string as the SNI hostname in the TLS connection to the backend, and requires that this string match a Subject Alternative Name (SAN) in the backend's server certificate. With a Regional Internet NEG backend, if the SNI is specified here, the load balancer uses it regardless of whether the Regional Internet NEG is specified with FQDN or IP address and port. When both sni and subjectAltNames[] are specified, the load balancer matches the backend certificate's SAN only to subjectAltNames[].

object

A list of Subject Alternative Names (SANs) that the Load Balancer verifies during a TLS handshake with the backend. When the server presents its X.509 certificate to the Load Balancer, the Load Balancer inspects the certificate's SAN field, and requires that at least one SAN match one of the subjectAltNames in the list. This field is limited to 5 entries. When both sni and subjectAltNames[] are specified, the load balancer matches the backend certificate's SAN only to subjectAltNames[].

string

The SAN specified as a DNS Name.

string

The SAN specified as a URI.

string

Reference to the BackendAuthenticationConfig resource from the networksecurity.googleapis.com namespace. Can be used in authenticating TLS connections to the backend, as specified by the authenticationMode field. Can only be specified if authenticationMode is not NONE.

Authorization requires the following IAM permission on the specified resource authenticationConfig:

• networksecurity.backendAuthenticationConfigs.use

object

backendServices.list of custom metrics that are used for the WEIGHTED_ROUND_ROBIN localityLbPolicy.

string

Name of a custom utilization signal. The name must be 1-64 characters long and match the regular expression a-z? which means that the first character must be a lowercase letter, and all following characters must be a dash, period, underscore, lowercase letter, or digit, except the last character, which cannot be a dash, period, or underscore. For usage guidelines, see Custom Metrics balancing mode. This field can only be used for a global or regional backend service with the loadBalancingScheme set to EXTERNAL_MANAGED, INTERNAL_MANAGED INTERNAL_SELF_MANAGED.

boolean

If true, the metric data is not used for load balancing.

object

Input only. [Input Only] Additional params passed with the request, but not persisted as part of resource payload.

map (key: string, value: string)

Tag keys/values directly bound to this resource. Tag keys and values have the same definition as resource manager tags. The field is allowed for INSERT only. The keys/values to set on the resource should be specified in either ID { : } or Namespaced format { : }. For example the following are valid inputs: * {"tagKeys/333" : "tagValues/444", "tagKeys/123" : "tagValues/456"} * {"123/environment" : "production", "345/abc" : "xyz"} Note: * Invalid combinations of ID & namespaced format is not supported. For instance: {"123/environment" : "tagValues/444"} is invalid.

Represents an Operation resource.

Google Compute Engine has three Operation resources:

• Global
• Regional
• Zonal

You can use an operation resource to manage asynchronous API requests. For more information, read Handling API responses.

Operations can be global, regional or zonal.

• For global operations, use the globalOperations resource.
• For regional operations, use the regionOperations resource.
• For zonal operations, use the zoneOperations resource.

For more information, read Global, Regional, and Zonal Resources.

Note that completed Operation resources have a limited retention period.

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

{
  "kind": string,
  "id": string,
  "creationTimestamp": string,
  "name": string,
  "zone": string,
  "clientOperationId": string,
  "operationType": string,
  "targetLink": string,
  "targetId": string,
  "status": enum,
  "statusMessage": string,
  "user": string,
  "progress": integer,
  "insertTime": string,
  "startTime": string,
  "endTime": string,
  "error": {
    "errors": [
      {
        "code": string,
        "location": string,
        "message": string,
        "errorDetails": [
          {
            "errorInfo": {
              "reason": string,
              "domain": string,
              "metadatas": {
                string: string,
                ...
              }
            },
            "quotaInfo": {
              "metricName": string,
              "limitName": string,
              "dimensions": {
                string: string,
                ...
              },
              "limit": number,
              "futureLimit": number,
              "rolloutStatus": enum
            },
            "help": {
              "links": [
                {
                  "description": string,
                  "url": string
                }
              ]
            },
            "localizedMessage": {
              "locale": string,
              "message": string
            }
          }
        ]
      }
    ]
  },
  "warnings": [
    {
      "code": enum,
      "message": string,
      "data": [
        {
          "key": string,
          "value": string
        }
      ]
    }
  ],
  "httpErrorStatusCode": integer,
  "httpErrorMessage": string,
  "selfLink": string,
  "region": string,
  "description": string,
  "operationGroupId": string,

  // Union field metadata can be only one of the following:
  "setCommonInstanceMetadataOperationMetadata": {
    "clientOperationId": string,
    "perLocationOperations": {
      string: {
        "state": enum,
        "error": {
          "code": integer,
          "message": string,
          "details": [
            {
              "@type": string,
              field1: ...,
              ...
            }
          ]
        }
      },
      ...
    }
  },
  "instancesBulkInsertOperationMetadata": {
    "perLocationStatus": {
      string: {
        "status": enum,
        "targetVmCount": integer,
        "createdVmCount": integer,
        "failedToCreateVmCount": integer,
        "deletedVmCount": integer
      },
      ...
    }
  }
  // End of list of possible types for union field metadata.
}

string

[Output Only] Type of the resource. Always compute#operation for Operation resources.

string (uint64 format)

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

string

[Deprecated] This field is deprecated.

string

[Output Only] Name of the operation.

string

[Output Only] The URL of the zone where the operation resides. Only applicable when performing per-zone operations.

string

[Output Only] The value of requestId if you provided it in the request. Not present otherwise.

string

[Output Only] The type of operation, such as insert, update, or delete, and so on.

string

[Output Only] The URL of the resource that the operation modifies. For operations related to creating a snapshot, this points to the disk that the snapshot was created from.

string (uint64 format)

[Output Only] The unique target ID, which identifies a specific incarnation of the target resource.

enum

[Output Only] The status of the operation, which can be one of the following: PENDING, RUNNING, or DONE.

string

[Output Only] An optional textual description of the current status of the operation.

string

[Output Only] User who requested the operation, for example: user@example.com or alice_smith_identifier (global/workforcePools/example-com-us-employees).

integer

[Output Only] An optional progress indicator that ranges from 0 to 100. There is no requirement that this be linear or support any granularity of operations. This should not be used to guess when the operation will be complete. This number should monotonically increase as the operation progresses.

string

[Output Only] The time that this operation was requested. This value is in RFC3339 text format.

string

[Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.

string

[Output Only] The time that this operation was completed. This value is in RFC3339 text format.

object

[Output Only] If errors are generated during processing of the operation, this field will be populated.

object

[Output Only] The array of errors encountered while processing this operation.

string

[Output Only] The error type identifier for this error.

string

[Output Only] Indicates the field in the request that caused the error. This property is optional.

string

[Output Only] An optional, human-readable error message.

object

[Output Only] An optional list of messages that contain the error details. There is a set of defined message types to use for providing details.The syntax depends on the error code. For example, QuotaExceededInfo will have details when the error code is QUOTA_EXCEEDED.

object

string

The reason of the error. This is a constant value that identifies the proximate cause of the error. Error reasons are unique within a particular domain of errors. This should be at most 63 characters and match a regular expression of [A-Z][A-Z0-9_]+[A-Z0-9], which represents UPPER_SNAKE_CASE.

string

The logical grouping to which the "reason" belongs. The error domain is typically the registered service name of the tool or product that generates the error. Example: "pubsub.googleapis.com". If the error is generated by some common infrastructure, the error domain must be a globally unique value that identifies the infrastructure. For Google API infrastructure, the error domain is "googleapis.com".

map (key: string, value: string)

Additional structured details about this error.

Keys must match a regular expression of [a-z][a-zA-Z0-9-_]+ but should ideally be lowerCamelCase. Also, they must be limited to 64 characters in length. When identifying the current value of an exceeded limit, the units should be contained in the key, not the value. For example, rather than {"instanceLimit": "100/request"}, should be returned as, {"instanceLimitPerRequest": "100"}, if the client exceeds the number of instances that can be created in a single (batch) request.

object

string

The Compute Engine quota metric name.

string

The name of the quota limit.

map (key: string, value: string)

The map holding related quota dimensions.

number

Current effective quota limit. The limit's unit depends on the quota type or metric.

number

Future quota limit being rolled out. The limit's unit depends on the quota type or metric.

enum

Rollout status of the future quota limit.

object

object

URL(s) pointing to additional information on handling the current error.

string

Describes what the link offers.

string

The URL of the link.

object

string

The locale used following the specification defined at https://www.rfc-editor.org/rfc/bcp/bcp47.txt. Examples are: "en-US", "fr-CH", "es-MX"

string

The localized error message in the above locale.

object

[Output Only] If warning messages are generated during processing of the operation, this field will be populated.

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.

string

[Output Only] A human-readable description of the warning code.

object

[Output Only] Metadata about this warning in key: value format. For example:

"data": [  {  "key": "scope",  "value": "zones/us-east1-d"  }

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).

string

[Output Only] A warning data value corresponding to the key.

integer

[Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a 404 means the resource was not found.

string

[Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as NOT FOUND.

string

[Output Only] Server-defined URL for the resource.

string

[Output Only] The URL of the region where the operation resides. Only applicable when performing regional operations.

string

[Output Only] A textual description of the operation, which is set when the operation is created.

string

[Output Only] An ID that represents a group of operations, such as when a group of operations results from a bulkInsert API request.

object

[Output Only] If the operation is for projects.setCommonInstanceMetadata, this field will contain information on all underlying zonal actions and their state.

string

[Output Only] The client operation id.

map (key: string, value: object)

[Output Only] Status information per location (location name is key). Example key: zones/us-central1-a

enum

[Output Only] Status of the action, which can be one of the following: PROPAGATING, PROPAGATED, ABANDONED, FAILED, or DONE.

object

[Output Only] If state is ABANDONED or FAILED, this field is populated.

integer

The status code, which should be an enum value of google.rpc.Code.

string

A developer-facing error message, which should be in English. Any user-facing error message should be localized and sent in the google.rpc.Status.details field, or localized by the client.

object

A list of messages that carry the error details. There is a common set of message types for APIs to use.

An object containing fields of an arbitrary type. An additional field "@type" contains a URI identifying the type. Example: { "id": 1234, "@type": "types.example.com/standard/id" }.

object

map (key: string, value: object)

Status information per location (location name is key). Example key: zones/us-central1-a

enum

[Output Only] Creation status of BulkInsert operation - information if the flow is rolling forward or rolling back.

integer

[Output Only] Count of VMs originally planned to be created.

integer

[Output Only] Count of VMs successfully created so far.

integer

[Output Only] Count of VMs that started creating but encountered an error.

integer

[Output Only] Count of VMs that got deleted during rollback.

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.

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

• compute.backendServices.get
• compute.backendServices.update

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

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