project STRING Required

Project ID for this request

region STRING Required

Name of the region scoping this request

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)

maxResults INTEGER

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)

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

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

id STRING

[Output Only] Unique identifier for the resource; defined by the server

items[] OBJECT

Represents a Backend Service resource.

Backend services must have an associated health check. Backend services also store information about session affinity. For more information, read Backend Services.

A backendServices resource represents a global backend service. Global backend services are used for HTTP(S), SSL Proxy, TCP Proxy load balancing and Traffic Director.

A regionBackendServices resource represents a regional backend service. Regional backend services are used for internal TCP/UDP load balancing. For more information, read Internal TCP/UDP Load balancing. (== resource_for v1.backendService ==) (== resource_for beta.backendService ==)

items[].affinityCookieTtlSec INTEGER

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[].backends[] OBJECT

Message containing information of one individual backend

items[].backends[].balancingMode ENUMERATION

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. The CONNECTION balancing mode is only available 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, then the load is spread based on the rate of HTTP requests per second (RPS). The RATE balancing mode is only available 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, then the load is spread based on the CPU utilization of instances in an instance group. The UTILIZATION balancing mode is only available if the loadBalancingScheme of the backend service is EXTERNAL, INTERNAL_SELF_MANAGED, or INTERNAL_MANAGED and the backend is made up of instance groups. There are no restrictions on the backend service protocol.

items[].backends[].capacityScaler FLOAT

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[].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[].maxConnections INTEGER

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[].maxConnectionsPerEndpoint INTEGER

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[].maxConnectionsPerInstance INTEGER

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[].maxRate INTEGER

The max requests per second (RPS) of the group. Can be used with either RATE or UTILIZATION balancing modes, but required if RATE mode. For RATE mode, either maxRate or maxRatePerInstance must be set.

This cannot be used for internal load balancing

items[].backends[].maxRatePerEndpoint FLOAT

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[].maxRatePerInstance FLOAT

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[].maxUtilization FLOAT

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[].cdnPolicy OBJECT

Message containing Cloud CDN configuration for a backend service

items[].cdnPolicy.cacheKeyPolicy OBJECT

Message containing what to include in the cache key for a request for Cloud CDN

items[].cdnPolicy.cacheKeyPolicy.includeHost BOOLEAN

If true, requests to different hosts will be cached separately

items[].cdnPolicy.cacheKeyPolicy.includeProtocol BOOLEAN

If true, http and https requests will be cached separately

items[].cdnPolicy.cacheKeyPolicy.includeQueryString BOOLEAN

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

items[].cdnPolicy.cacheKeyPolicy.queryStringBlacklist[] STRING

items[].cdnPolicy.cacheKeyPolicy.queryStringWhitelist[] STRING

items[].cdnPolicy.signedUrlCacheMaxAgeSec INTEGER

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[].cdnPolicy.signedUrlKeyNames[] STRING

items[].connectionDraining OBJECT

Message containing connection draining configuration

items[].connectionDraining.drainingTimeoutSec INTEGER

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[].creationTimestamp STRING

[Output Only] Creation timestamp in RFC3339 text format

items[].customRequestHeaders[] STRING

items[].description STRING

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

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[].fingerprint BINARY

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

items[].healthChecks[] STRING

items[].iap OBJECT

Identity-Aware Proxy

items[].iap.enabled BOOLEAN

items[].iap.oauth2ClientId STRING

items[].iap.oauth2ClientSecret STRING

items[].iap.oauth2ClientSecretSha256 STRING

[Output Only] SHA256 hash value for the field oauth2_client_secret above

items[].id INTEGER

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

items[].kind STRING

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

items[].loadBalancingScheme ENUMERATION

Indicates whether the backend service will be used with internal or external load balancing. A backend service created for one type of load balancing cannot be used with the other. Possible values are INTERNAL and EXTERNAL

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[].port INTEGER

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[].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[].protocol ENUMERATION

The protocol this BackendService uses to communicate with backends.

Possible values are HTTP, HTTPS, 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[].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[].securityPolicy STRING

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

items[].selfLink STRING

[Output Only] Server-defined URL for the resource

items[].sessionAffinity ENUMERATION

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. GENERATED_COOKIE is only available 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, possible values are NONE, CLIENT_IP, GENERATED_COOKIE, HEADER_FIELD, or HTTP_COOKIE

items[].timeoutSec INTEGER

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

kind STRING

[Output Only] Type of resource. Always compute#backendServiceList for lists of 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 ENUMERATION

[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.data[] OBJECT

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

warning.message STRING

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