Refer to the :ref:`service discovery type<arch_overview_service_discovery_types_sds>` for an explanation.

Refer to the :ref:`least request load balancing policy<arch_overview_load_balancing_types_least_request>` for an explanation.

Refer to the :ref:`logical DNS discovery type<arch_overview_service_discovery_types_logical_dns>` for an explanation.

Refer to the :ref:`Maglev load balancing policy<arch_overview_load_balancing_types_maglev>` for an explanation.

Refer to the :ref:`original destination discovery type<arch_overview_service_discovery_types_original_destination>` for an explanation.

Refer to the :ref:`original destination load balancing policy<arch_overview_load_balancing_types_original_destination>` for an explanation.

Refer to the :ref:`random load balancing policy<arch_overview_load_balancing_types_random>` for an explanation.

Refer to the :ref:`ring hash load balancing policy<arch_overview_load_balancing_types_ring_hash>` for an explanation.

Refer to the :ref:`round robin load balancing policy<arch_overview_load_balancing_types_round_robin>` for an explanation.

Refer to the :ref:`static discovery type<arch_overview_service_discovery_types_static>` for an explanation.

Refer to the :ref:`strict DNS discovery type<arch_overview_service_discovery_types_strict_dns>` for an explanation.

Cluster can only operate on one of the possible upstream protocols (HTTP1.1, HTTP2).

Use HTTP1.1 or HTTP2, depending on which one is used on the downstream connection.

Drain in response to calling /healthcheck/fail admin endpoint (along with the health check filter), listener removal/modification, and hot restart.

Drain in response to listener removal/modification and hot restart.

Configuration for a single upstream cluster.

Common configuration for all load balancer implementations.

Configuration for :ref:`locality weighted load balancing <arch_overview_load_balancing_locality_weighted_lb>`.

Cluster_CommonLbConfig_LocalityWeightedLbConfigValidationError is the validation error returned by Cluster_CommonLbConfig_LocalityWeightedLbConfig.Validate if the designated constraints aren't met.

Configuration for :ref:`zone aware routing <arch_overview_load_balancing_zone_aware_routing>`.

Cluster_CommonLbConfig_ZoneAwareLbConfigValidationError is the validation error returned by Cluster_CommonLbConfig_ZoneAwareLbConfig.Validate if the designated constraints aren't met.

Cluster_CommonLbConfigValidationError is the validation error returned by Cluster_CommonLbConfig.Validate if the designated constraints aren't met.

Only valid when discovery type is EDS.

Cluster_EdsClusterConfigValidationError is the validation error returned by Cluster_EdsClusterConfig.Validate if the designated constraints aren't met.

Optionally divide the endpoints in this cluster into subsets defined by endpoint metadata and selected by route and weighted cluster metadata.

Specifications for subsets.

Cluster_LbSubsetConfig_LbSubsetSelectorValidationError is the validation error returned by Cluster_LbSubsetConfig_LbSubsetSelector.Validate if the designated constraints aren't met.

Cluster_LbSubsetConfigValidationError is the validation error returned by Cluster_LbSubsetConfig.Validate if the designated constraints aren't met.

Specific configuration for the :ref:`Original Destination <arch_overview_load_balancing_types_original_destination>` load balancing policy.

Cluster_OriginalDstLbConfigValidationError is the validation error returned by Cluster_OriginalDstLbConfig.Validate if the designated constraints aren't met.

Specific configuration for the :ref:`RingHash<arch_overview_load_balancing_types_ring_hash>` load balancing policy.

[#not-implemented-hide:] Hide from docs.

Cluster_RingHashLbConfig_DeprecatedV1ValidationError is the validation error returned by Cluster_RingHashLbConfig_DeprecatedV1.Validate if the designated constraints aren't met.

Cluster_RingHashLbConfigValidationError is the validation error returned by Cluster_RingHashLbConfig.Validate if the designated constraints aren't met.

Each route from RDS will map to a single cluster or traffic split across clusters using weights expressed in the RDS WeightedCluster.

Load balancing policy settings.

ClusterLoadAssignment_Policy_DropOverloadValidationError is the validation error returned by ClusterLoadAssignment_Policy_DropOverload.Validate if the designated constraints aren't met.

ClusterLoadAssignment_PolicyValidationError is the validation error returned by ClusterLoadAssignment_Policy.Validate if the designated constraints aren't met.

ClusterLoadAssignmentValidationError is the validation error returned by ClusterLoadAssignment.Validate if the designated constraints aren't met.

ClusterValidationError is the validation error returned by Cluster.Validate if the designated constraints aren't met.

A DiscoveryRequest requests a set of versioned resources of the same type for a given Envoy node on some API.

DiscoveryRequestValidationError is the validation error returned by DiscoveryRequest.Validate if the designated constraints aren't met.

DiscoveryResponseValidationError is the validation error returned by DiscoveryResponse.Validate if the designated constraints aren't met.

IncrementalDiscoveryRequest and IncrementalDiscoveryResponse are used in a new gRPC endpoint for Incremental xDS.

IncrementalDiscoveryRequestValidationError is the validation error returned by IncrementalDiscoveryRequest.Validate if the designated constraints aren't met.

IncrementalDiscoveryResponseValidationError is the validation error returned by IncrementalDiscoveryResponse.Validate if the designated constraints aren't met.

[#not-implemented-hide:].

Listener_DeprecatedV1ValidationError is the validation error returned by Listener_DeprecatedV1.Validate if the designated constraints aren't met.

ListenerValidationError is the validation error returned by Listener.Validate if the designated constraints aren't met.

ResourceValidationError is the validation error returned by Resource.Validate if the designated constraints aren't met.

[#comment:next free field: 9].

RouteConfigurationValidationError is the validation error returned by RouteConfiguration.Validate if the designated constraints aren't met.

An extensible structure containing the address Envoy should bind to when establishing upstream connections.

UpstreamBindConfigValidationError is the validation error returned by UpstreamBindConfig.Validate if the designated constraints aren't met.

UpstreamConnectionOptionsValidationError is the validation error returned by UpstreamConnectionOptions.Validate if the designated constraints aren't met.

Refer to :ref:`service discovery type <arch_overview_service_discovery_types>` for an explanation on each type.

When V4_ONLY is selected, the DNS resolver will only perform a lookup for addresses in the IPv4 family.

Refer to :ref:`load balancer type <arch_overview_load_balancing_types>` architecture overview section for information on each type.

If NO_FALLBACK is selected, a result equivalent to no healthy hosts is reported.