Method: regionBackendServices.list

• HTTP request
• Path parameters
• Query parameters
• Request body
• Response body
  • JSON representation
    • JSON representation
    • JSON representation
    • JSON representation
    • JSON representation
    • JSON representation
    • JSON representation
    • JSON representation
      • JSON representation
    • JSON representation
    • JSON representation
    • JSON representation
• Authorization Scopes
• IAM Permissions

Retrieves the list of regional BackendService resources available to the specified project in the given region.

HTTP request

GET https://compute.googleapis.com/compute/beta/projects/{project}/regions/{region}/backendServices

The URL uses gRPC Transcoding syntax.

Path parameters

Parameters
project	string Project ID for this request.
region	string Name of the region scoping this request.

Query parameters

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

Request body

The request body must be empty.

Response body

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

JSON representation

{ "id": string, "items": [ { "id": string, "creationTimestamp": string, "name": string, "description": string, "selfLink": string, "backends": [ { "description": string, "group": string, "balancingMode": enum, "maxUtilization": number, "maxRate": number, "maxRatePerInstance": number, "maxRatePerEndpoint": number, "maxConnections": number, "maxConnectionsPerInstance": number, "maxConnectionsPerEndpoint": number, "capacityScaler": number, "failover": boolean } ], "healthChecks": [ string ], "timeoutSec": number, "port": number, "protocol": enum, "fingerprint": string, "portName": string, "enableCDN": boolean, "sessionAffinity": enum, "affinityCookieTtlSec": number, "region": string, "failoverPolicy": { "disableConnectionDrainOnFailover": boolean, "dropTrafficIfUnhealthy": boolean, "failoverRatio": number }, "loadBalancingScheme": enum, "connectionDraining": { "drainingTimeoutSec": number }, "iap": { "enabled": boolean, "oauth2ClientId": string, "oauth2ClientSecret": string, "oauth2ClientSecretSha256": string }, "cdnPolicy": { "cacheKeyPolicy": { "includeProtocol": boolean, "includeHost": boolean, "includeQueryString": boolean, "queryStringWhitelist": [ string ], "queryStringBlacklist": [ string ] }, "signedUrlKeyNames": [ string ], "signedUrlCacheMaxAgeSec": string }, "customRequestHeaders": [ string ], "securityPolicy": string, "logConfig": { "enable": boolean, "sampleRate": number }, "localityLbPolicy": enum, "consistentHash": { "httpCookie": { "name": string, "path": string, "ttl": { "seconds": string, "nanos": number } }, "httpHeaderName": string, "minimumRingSize": string }, "circuitBreakers": { "connectTimeout": { "seconds": string, "nanos": number }, "maxRequestsPerConnection": number, "maxConnections": number, "maxPendingRequests": number, "maxRequests": number, "maxRetries": number }, "outlierDetection": { "consecutiveErrors": number, "interval": { "seconds": string, "nanos": number }, "baseEjectionTime": { "seconds": string, "nanos": number }, "maxEjectionPercent": number, "enforcingConsecutiveErrors": number, "enforcingSuccessRate": number, "successRateMinimumHosts": number, "successRateRequestVolume": number, "successRateStdevFactor": number, "consecutiveGatewayFailure": number, "enforcingConsecutiveGatewayFailure": number }, "network": string, "loadBalancingSchemeAlts": [ enum ], "serviceProtocolAlts": [ enum ], "kind": string } ], "nextPageToken": string, "selfLink": string, "warning": { "code": enum, "message": string, "data": [ { "key": string, "value": string } ] }, "kind": string }

Fields
id	string [Output Only] Unique identifier for the resource; defined by the server.
items[]	object A list of BackendService resources.
items[].id	string (fixed64 format) [Output Only] The unique identifier for the resource. This identifier is defined by the server.
items[].creationTimestamp	string [Output Only] Creation timestamp in RFC3339 text format.
items[].name	string Name of the resource. Provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
items[].description	string An optional description of this resource. Provide this property when you create the resource.
items[].selfLink	string [Output Only] Server-defined URL for the resource.
items[].backends[]	object The list of backends that serve this BackendService.
items[].backends[].description	string An optional description of this resource. Provide this property when you create the resource.
items[].backends[].group	string The fully-qualified URL of an instance group or network endpoint group (NEG) resource. The type of backend that a backend service supports depends on the backend service's loadBalancingScheme. When the loadBalancingScheme for the backend service is EXTERNAL, INTERNAL_SELF_MANAGED, or INTERNAL_MANAGED, the backend can be either an instance group or a NEG. The backends on the backend service must be either all instance groups or all NEGs. You cannot mix instance group and NEG backends on the same backend service. When the loadBalancingScheme for the backend service is INTERNAL, the backend must be an instance group in the same region as the backend service. NEGs are not supported. 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.
items[].backends[].balancingMode	enum Specifies the balancing mode for the backend. When choosing a balancing mode, you need to consider the loadBalancingScheme, and protocol for the backend service, as well as the type of backend (instance group or NEG). If the load balancing mode is CONNECTION, then the load is spread based on how many concurrent connections the backend can handle. You can use the CONNECTION balancing mode if the protocol for the backend service is SSL, TCP, or UDP. If the loadBalancingScheme for the backend service is EXTERNAL (SSL Proxy and TCP Proxy load balancers), you must also specify exactly one of the following parameters: maxConnections, maxConnectionsPerInstance, or maxConnectionsPerEndpoint. If the loadBalancingScheme for the backend service is INTERNAL (internal TCP/UDP load balancers), you cannot specify any additional parameters. If the load balancing mode is RATE, the load is spread based on the rate of HTTP requests per second (RPS). You can use the RATE balancing mode if the protocol for the backend service is HTTP or HTTPS. You must specify exactly one of the following parameters: maxRate, maxRatePerInstance, or maxRatePerEndpoint. If the load balancing mode is UTILIZATION, the load is spread based on the CPU utilization of instances in an instance group. You can use the UTILIZATION balancing mode if the loadBalancingScheme of the backend service is EXTERNAL, INTERNAL_SELF_MANAGED, or INTERNAL_MANAGED and the backends are instance groups. There are no restrictions on the backend service protocol.
items[].backends[].maxUtilization	number Defines the maximum average CPU utilization of a backend VM in an instance group. The valid range is [0.0, 1.0]. This is an optional parameter if the backend's balancingMode is UTILIZATION. This parameter can be used in conjunction with maxRate, maxRatePerInstance, maxConnections, or maxConnectionsPerInstance.
items[].backends[].maxRate	number 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 maxRatePerInstance must be set. This cannot be used for internal load balancing.
items[].backends[].maxRatePerInstance	number Defines a maximum target for requests per second (RPS) for a single VM in a backend instance group. This is multiplied by the number of instances in the instance group to implicitly calculate a target maximum rate for the whole instance group. If the backend's balancingMode is UTILIZATION, this is an optional parameter. If the backend's balancingMode is RATE, you must specify either this parameter, maxRate, or maxRatePerEndpoint. Not available if the backend's balancingMode is CONNECTION.
items[].backends[].maxRatePerEndpoint	number Defines a maximum target for requests per second (RPS) for an endpoint of a NEG. This is multiplied by the number of endpoints in the NEG to implicitly calculate a target maximum rate for the NEG. If the backend's balancingMode is RATE, you must specify either this parameter, maxRate, or maxRatePerInstance. Not available if the backend's balancingMode is CONNECTION.
items[].backends[].maxConnections	number Defines a maximum target for simultaneous connections for the entire backend (instance group or NEG). If the backend's balancingMode is UTILIZATION, this is an optional parameter. If the backend's balancingMode is CONNECTION, and backend is attached to a backend service whose loadBalancingScheme is EXTERNAL, you must specify either this parameter, maxConnectionsPerInstance, or maxConnectionsPerEndpoint. Not available if the backend's balancingMode is RATE. If the loadBalancingScheme is INTERNAL, then maxConnections is not supported, even though the backend requires a balancing mode of CONNECTION.
items[].backends[].maxConnectionsPerInstance	number Defines a maximum target for simultaneous connections for a single VM in a backend instance group. This is multiplied by the number of instances in the instance group to implicitly calculate a target maximum number of simultaneous connections for the whole instance group. If the backend's balancingMode is UTILIZATION, this is an optional parameter. If the backend's balancingMode is CONNECTION, and backend is attached to a backend service whose loadBalancingScheme is EXTERNAL, you must specify either this parameter, maxConnections, or maxConnectionsPerEndpoint. Not available if the backend's balancingMode is RATE. Internal TCP/UDP load balancing does not support setting maxConnectionsPerInstance even though its backends require a balancing mode of CONNECTION.
items[].backends[].maxConnectionsPerEndpoint	number Defines a maximum target for simultaneous connections for an endpoint of a NEG. This is multiplied by the number of endpoints in the NEG to implicitly calculate a maximum number of target maximum simultaneous connections for the NEG. If the backend's balancingMode is CONNECTION, and the backend is attached to a backend service whose loadBalancingScheme is EXTERNAL, you must specify either this parameter, maxConnections, or maxConnectionsPerInstance. Not available if the backend's balancingMode is RATE. Internal TCP/UDP load balancing does not support setting maxConnectionsPerEndpoint even though its backends require a balancing mode of CONNECTION.
items[].backends[].capacityScaler	number 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]. This cannot be used for internal load balancing.
items[].backends[].failover	boolean This field designates whether this is a failover backend. More than one failover backend can be configured for a given BackendService.
items[].healthChecks[]	string The list of URLs to the HttpHealthCheck or HttpsHealthCheck resource for health checking this BackendService. Currently at most one health check can be specified, and a health check is required for Compute Engine backend services. A health check must not be specified for App Engine backend and Cloud Function backend. For internal load balancing, a URL to a HealthCheck resource must be specified instead.
items[].timeoutSec	number The backend service timeout has a different meaning depending on the type of load balancer. For more information read, Backend service settings The default is 30 seconds.
items[].port (deprecated)	number Deprecated in favor of portName. The TCP port to connect on the backend. The default value is 80. This cannot be used if the loadBalancingScheme is INTERNAL (Internal TCP/UDP Load Balancing).
items[].protocol	enum The protocol this BackendService uses to communicate with backends. Possible values are HTTP, HTTPS, HTTP2, TCP, SSL, or UDP, depending on the chosen load balancer or Traffic Director configuration. Refer to the documentation for the load balancer or for Traffic Director for more information.
items[].fingerprint	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.
items[].portName	string A named port on a backend instance group representing the port for communication to the backend VMs in that group. Required when the loadBalancingScheme is EXTERNAL and the backends are instance groups. The named port must be defined on each backend instance group. This parameter has no meaning if the backends are NEGs. Must be omitted when the loadBalancingScheme is INTERNAL (Internal TCP/UDP Load Blaancing).
items[].enableCDN	boolean If true, enables Cloud CDN for the backend service. Only applicable if the loadBalancingScheme is EXTERNAL and the protocol is HTTP or HTTPS.
items[].sessionAffinity	enum Type of session affinity to use. The default is NONE. Session affinity is not applicable if the --protocol is UDP. When the loadBalancingScheme is EXTERNAL, possible values are NONE, CLIENT_IP, or GENERATED_COOKIE. You can use GENERATED_COOKIE if the protocol is HTTP or HTTPS. When the loadBalancingScheme is INTERNAL, possible values are NONE, CLIENT_IP, CLIENT_IP_PROTO, or CLIENT_IP_PORT_PROTO. When the loadBalancingScheme is INTERNAL_SELF_MANAGED, or INTERNAL_MANAGED, possible values are NONE, CLIENT_IP, GENERATED_COOKIE, HEADER_FIELD, or HTTP_COOKIE.
items[].affinityCookieTtlSec	number 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 one day (86,400).
items[].region	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.
items[].failoverPolicy	object Applicable only to Failover for Internal TCP/UDP Load Balancing. Requires at least one backend instance group to be defined as a backup (failover) backend.
items[].failoverPolicy.disableConnectionDrainOnFailover	boolean This can be set to true only if the protocol is TCP. The default is false.
items[].failoverPolicy.dropTrafficIfUnhealthy	boolean Applicable only to Failover for Internal TCP/UDP Load Balancing. 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. The default is false.
items[].failoverPolicy.failoverRatio	number Applicable only to Failover for Internal TCP/UDP Load Balancing. 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.
items[].loadBalancingScheme	enum Specifies the load balancer type. Choose EXTERNAL for load balancers that receive traffic from external clients. Choose INTERNAL for Internal TCP/UDP Load Balancing. Choose INTERNAL_MANAGED for Internal HTTP(S) Load Balancing. Choose INTERNAL_SELF_MANAGED for Traffic Director. A backend service created for one type of load balancing cannot be used with another. For more information, refer to Choosing a load balancer.
items[].connectionDraining	object
items[].connectionDraining.drainingTimeoutSec	number The amount of time in seconds to allow existing connections to persist while on unhealthy backend VMs. Only applicable if the protocol is not UDP. The valid range is [0, 3600].
items[].iap	object
items[].iap.enabled	boolean
items[].iap.oauth2ClientId	string
items[].iap.oauth2ClientSecret	string
items[].iap.oauth2ClientSecretSha256	string [Output Only] SHA256 hash value for the field oauth2ClientSecret above.
items[].cdnPolicy	object Cloud CDN configuration for this BackendService.
items[].cdnPolicy.cacheKeyPolicy	object The CacheKeyPolicy for this CdnPolicy.
items[].cdnPolicy.cacheKeyPolicy.includeProtocol	boolean If true, http and https requests will be cached separately.
items[].cdnPolicy.cacheKeyPolicy.includeHost	boolean If true, requests to different hosts will be cached separately.
items[].cdnPolicy.cacheKeyPolicy.includeQueryString	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.
items[].cdnPolicy.cacheKeyPolicy.queryStringWhitelist[]	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.
items[].cdnPolicy.cacheKeyPolicy.queryStringBlacklist[]	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.
items[].cdnPolicy.signedUrlKeyNames[]	string [Output Only] Names of the keys for signing request URLs.
items[].cdnPolicy.signedUrlCacheMaxAgeSec	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.
items[].customRequestHeaders[]	string Headers that the HTTP/S load balancer should add to proxied requests.
items[].securityPolicy	string [Output Only] The resource URL for the security policy associated with this backend service.
items[].logConfig	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.
items[].logConfig.enable	boolean This field denotes whether to enable logging for the load balancer traffic served by this backend service.
items[].logConfig.sampleRate	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.
items[].localityLbPolicy	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, refer to https://ai.google/research/pubs/pub44824 This field is applicable to either: A regional backend service with the serviceProtocol set to HTTP, HTTPS, or HTTP2, and loadBalancingScheme set to INTERNAL_MANAGED. A global backend service with the loadBalancingScheme set to INTERNAL_SELF_MANAGED. If sessionAffinity is not NONE, and this field is not set to >MAGLEV or RING_HASH, session affinity settings will not take effect.
items[].consistentHash	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, or HTTP2, and loadBalancingScheme set to INTERNAL_MANAGED. A global backend service with the loadBalancingScheme set to INTERNAL_SELF_MANAGED.
items[].consistentHash.httpCookie	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.
items[].consistentHash.httpCookie.name	string Name of the cookie.
items[].consistentHash.httpCookie.path	string Path to set for the cookie.
items[].consistentHash.httpCookie.ttl	object Lifetime of the cookie.
items[].consistentHash.httpCookie.ttl.seconds	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
items[].consistentHash.httpCookie.ttl.nanos	number 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.
items[].consistentHash.httpHeaderName	string The hash based on the value of the specified header field. This field is applicable if the sessionAffinity is set to HEADER_FIELD.
items[].consistentHash.minimumRingSize	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.
items[].circuitBreakers	object Settings controlling the volume of connections to a backend service. If not set, this feature is considered disabled. This field is applicable to either: A regional backend service with the serviceProtocol set to HTTP, HTTPS, or HTTP2, and loadBalancingScheme set to INTERNAL_MANAGED. A global backend service with the loadBalancingScheme set to INTERNAL_SELF_MANAGED.
items[].circuitBreakers.connectTimeout	object The timeout for new network connections to hosts.
items[].circuitBreakers.connectTimeout.seconds	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
items[].circuitBreakers.connectTimeout.nanos	number 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.
items[].circuitBreakers.maxRequestsPerConnection	number 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.
items[].circuitBreakers.maxConnections	number The maximum number of connections to the backend service. If not specified, there is no limit.
items[].circuitBreakers.maxPendingRequests	number The maximum number of pending requests allowed to the backend service. If not specified, there is no limit.
items[].circuitBreakers.maxRequests	number The maximum number of parallel requests that allowed to the backend service. If not specified, there is no limit.
items[].circuitBreakers.maxRetries	number The maximum number of parallel retries allowed to the backend cluster. If not specified, the default is 1.
items[].outlierDetection	object Settings controlling the eviction of unhealthy hosts from the load balancing pool for the backend service. If not set, this feature is considered disabled. This field is applicable to either: A regional backend service with the serviceProtocol set to HTTP, HTTPS, or HTTP2, and loadBalancingScheme set to INTERNAL_MANAGED. A global backend service with the loadBalancingScheme set to INTERNAL_SELF_MANAGED.
items[].outlierDetection.consecutiveErrors	number 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.
items[].outlierDetection.interval	object Time interval between ejection analysis sweeps. This can result in both new ejections as well as hosts being returned to service. Defaults to 1 second.
items[].outlierDetection.interval.seconds	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
items[].outlierDetection.interval.nanos	number 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.
items[].outlierDetection.baseEjectionTime	object The base time that a host is ejected for. The real ejection time is equal to the base ejection time multiplied by the number of times the host has been ejected. Defaults to 30000ms or 30s.
items[].outlierDetection.baseEjectionTime.seconds	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
items[].outlierDetection.baseEjectionTime.nanos	number 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.
items[].outlierDetection.maxEjectionPercent	number Maximum percentage of hosts in the load balancing pool for the backend service that can be ejected. Defaults to 50%.
items[].outlierDetection.enforcingConsecutiveErrors	number 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 0.
items[].outlierDetection.enforcingSuccessRate	number 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.
items[].outlierDetection.successRateMinimumHosts	number 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.
items[].outlierDetection.successRateRequestVolume	number 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.
items[].outlierDetection.successRateStdevFactor	number 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.
items[].outlierDetection.consecutiveGatewayFailure	number 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.
items[].outlierDetection.enforcingConsecutiveGatewayFailure	number 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 100.
items[].network	string The URL of the network to which this backend service belongs. This field can only be spcified when the load balancing scheme is set to INTERNAL.
items[].kind	string [Output Only] Type of resource. Always compute#backendService for backend services.
nextPageToken	string [Output Only] This token allows you to get the next page of results for list requests. If the number of results is larger than maxResults, use the nextPageToken as a value for the query parameter pageToken in the next list request. Subsequent list requests will have their own nextPageToken to continue paging through the results.
selfLink	string [Output Only] Server-defined URL for this resource.
warning	object [Output Only] Informational warning message.
warning.code	enum [Output Only] A warning code, if applicable. For example, Compute Engine returns NO_RESULTS_ON_PAGE if there are no results in the response.
warning.message	string [Output Only] A human-readable description of the warning code.
warning.data[]	object [Output Only] Metadata about this warning in key: value format. For example: "data": [ { "key": "scope", "value": "zones/us-east1-d" }
warning.data[].key	string [Output Only] A key that provides more detail on the warning being returned. For example, for warnings where there are no results in a list request for a particular zone, this key might be scope and the key value might be the zone name. Other examples might be a key indicating a deprecated resource and a suggested replacement, or a warning about invalid network settings (for example, if an instance attempts to perform IP forwarding but is not enabled for IP forwarding).
warning.data[].value	string [Output Only] A warning data value corresponding to the key.
kind	string [Output Only] Type of resource. Always compute#backendServiceList for lists of backend services.

Authorization Scopes

Requires one of the following OAuth scopes:

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

For more information, see the Authentication Overview.

IAM Permissions

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

• compute.regionBackendServices.list

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