Backend(mapping=None, *, ignore_unknown_fields=False, **kwargs)Message containing information of one individual backend.
.. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
Attributes | |
|---|---|
| Name | Description |
balancing_mode |
str
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. Check the BalancingMode enum for the list of possible values. This field is a member of oneof_ _balancing_mode.
|
capacity_scaler |
float
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. This field is a member of oneof_ _capacity_scaler.
|
description |
str
An optional description of this resource. Provide this property when you create the resource. This field is a member of oneof_ _description.
|
failover |
bool
This field designates whether this is a failover backend. More than one failover backend can be configured for a given BackendService. This field is a member of oneof_ _failover.
|
group |
str
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 |
max_connections |
int
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. This field is a member of oneof_ _max_connections.
|
max_connections_per_endpoint |
int
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. This field is a member of oneof_ _max_connections_per_endpoint.
|
max_connections_per_instance |
int
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. This field is a member of oneof_ _max_connections_per_instance.
|
max_rate |
int
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. This field is a member of oneof_ _max_rate.
|
max_rate_per_endpoint |
float
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. This field is a member of oneof_ _max_rate_per_endpoint.
|
max_rate_per_instance |
float
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. This field is a member of oneof_ _max_rate_per_instance.
|
max_utilization |
float
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. This field is a member of oneof_ _max_utilization.
|
Classes
BalancingMode
BalancingMode(value)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.
Values: UNDEFINED_BALANCING_MODE (0): A value indicating that the enum field is not set. CONNECTION (246311646): Balance based on the number of simultaneous connections. RATE (2508000): Balance based on requests per second (RPS). UTILIZATION (157008386): Balance based on the backend utilization.