BackendServiceConnectionTrackingPolicy(
mapping=None, *, ignore_unknown_fields=False, **kwargs
)Connection Tracking configuration for this BackendService.
.. _oneof: https://proto-plus-python.readthedocs.io/en/stable/fields.html#oneofs-mutually-exclusive-fields
Attributes
| Name | Description |
connection_persistence_on_unhealthy_backends |
str
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 |
enable_strong_affinity |
bool
Enable Strong Session Affinity for Network Load Balancing. This option is not available publicly. This field is a member of oneof_ _enable_strong_affinity.
|
idle_timeout_sec |
int
Specifies how long to keep a Connection Tracking entry while there is no matching traffic (in seconds). For Internal TCP/UDP Load Balancing: - 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 Network Load Balancer the default is 60 seconds. This option is not available publicly. This field is a member of oneof_ _idle_timeout_sec.
|
tracking_mode |
str
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 |
Classes
ConnectionPersistenceOnUnhealthyBackends
ConnectionPersistenceOnUnhealthyBackends(value)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 <https://cloud.google.com/load-balancing/docs/network/networklb-backend-service#connection-persistence>
and Connection Persistence for Internal TCP/UDP Load
Balancing <https://cloud.google.com/load-balancing/docs/internal#connection-persistence>.
TrackingMode
TrackingMode(value)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 <https://cloud.google.com/load-balancing/docs/network/networklb-backend-service#tracking-mode>
and Tracking Mode for Internal TCP/UDP Load
Balancing <https://cloud.google.com/load-balancing/docs/internal#tracking-mode>.