package envoy.extensions.clusters.composite.v3

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Configuration for the composite cluster. See the :ref:`architecture overview <arch_overview_composite_cluster>` for more information. This cluster type enables retry-aware cluster selection, allowing different retry attempts to automatically target different upstream clusters. Unlike the standard aggregate cluster which uses health-based selection, the composite cluster uses the retry attempt count to deterministically select which sub-cluster to route to. When retry attempts exceed the number of configured clusters, requests will fail with no host available. Example configuration: .. code-block:: yaml name: composite_cluster connect_timeout: 0.25s lb_policy: CLUSTER_PROVIDED cluster_type: name: envoy.clusters.composite typed_config: "@type": type.googleapis.com/envoy.extensions.clusters.composite.v3.ClusterConfig clusters: - name: primary_cluster - name: secondary_cluster - name: fallback_cluster [#extension: envoy.clusters.composite]

• repeated ClusterConfig.ClusterEntry clusters = 1

  List of clusters to use for request routing. The first cluster is used for the initial request (attempt 1), the second cluster for the first retry (attempt 2), and so on. Must contain at least one cluster. When retry attempts exceed the number of configured clusters, requests will fail with no host available.

Configuration for an individual cluster entry.

Used in: ClusterConfig

• string name = 1

  Name of the cluster. This cluster must be defined elsewhere in the configuration.