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116 lines
4.8 KiB
116 lines
4.8 KiB
syntax = "proto3"; |
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package envoy.config.endpoint.v3; |
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import "envoy/config/endpoint/v3/endpoint_components.proto"; |
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import "envoy/type/v3/percent.proto"; |
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import "google/api/annotations.proto"; |
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import "google/protobuf/duration.proto"; |
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import "google/protobuf/wrappers.proto"; |
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import "udpa/annotations/versioning.proto"; |
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import "validate/validate.proto"; |
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option java_package = "io.envoyproxy.envoy.config.endpoint.v3"; |
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option java_outer_classname = "EndpointProto"; |
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option java_multiple_files = true; |
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// [#protodoc-title: Endpoint configuration] |
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// Endpoint discovery :ref:`architecture overview <arch_overview_service_discovery_types_eds>` |
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// Each route from RDS will map to a single cluster or traffic split across |
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// clusters using weights expressed in the RDS WeightedCluster. |
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// |
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// With EDS, each cluster is treated independently from a LB perspective, with |
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// LB taking place between the Localities within a cluster and at a finer |
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// granularity between the hosts within a locality. The percentage of traffic |
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// for each endpoint is determined by both its load_balancing_weight, and the |
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// load_balancing_weight of its locality. First, a locality will be selected, |
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// then an endpoint within that locality will be chose based on its weight. |
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// [#next-free-field: 6] |
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message ClusterLoadAssignment { |
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option (udpa.annotations.versioning).previous_message_type = "envoy.api.v2.ClusterLoadAssignment"; |
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// Load balancing policy settings. |
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// [#next-free-field: 6] |
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message Policy { |
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option (udpa.annotations.versioning).previous_message_type = |
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"envoy.api.v2.ClusterLoadAssignment.Policy"; |
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message DropOverload { |
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option (udpa.annotations.versioning).previous_message_type = |
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"envoy.api.v2.ClusterLoadAssignment.Policy.DropOverload"; |
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// Identifier for the policy specifying the drop. |
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string category = 1 [(validate.rules).string = {min_bytes: 1}]; |
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// Percentage of traffic that should be dropped for the category. |
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type.v3.FractionalPercent drop_percentage = 2; |
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} |
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reserved 1, 5; |
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reserved "disable_overprovisioning"; |
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// Action to trim the overall incoming traffic to protect the upstream |
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// hosts. This action allows protection in case the hosts are unable to |
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// recover from an outage, or unable to autoscale or unable to handle |
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// incoming traffic volume for any reason. |
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// |
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// At the client each category is applied one after the other to generate |
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// the 'actual' drop percentage on all outgoing traffic. For example: |
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// |
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// .. code-block:: json |
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// |
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// { "drop_overloads": [ |
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// { "category": "throttle", "drop_percentage": 60 } |
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// { "category": "lb", "drop_percentage": 50 } |
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// ]} |
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// |
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// The actual drop percentages applied to the traffic at the clients will be |
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// "throttle"_drop = 60% |
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// "lb"_drop = 20% // 50% of the remaining 'actual' load, which is 40%. |
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// actual_outgoing_load = 20% // remaining after applying all categories. |
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repeated DropOverload drop_overloads = 2; |
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// Priority levels and localities are considered overprovisioned with this |
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// factor (in percentage). This means that we don't consider a priority |
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// level or locality unhealthy until the percentage of healthy hosts |
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// multiplied by the overprovisioning factor drops below 100. |
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// With the default value 140(1.4), Envoy doesn't consider a priority level |
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// or a locality unhealthy until their percentage of healthy hosts drops |
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// below 72%. For example: |
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// |
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// .. code-block:: json |
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// |
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// { "overprovisioning_factor": 100 } |
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// |
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// Read more at :ref:`priority levels <arch_overview_load_balancing_priority_levels>` and |
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// :ref:`localities <arch_overview_load_balancing_locality_weighted_lb>`. |
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google.protobuf.UInt32Value overprovisioning_factor = 3 [(validate.rules).uint32 = {gt: 0}]; |
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// The max time until which the endpoints from this assignment can be used. |
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// If no new assignments are received before this time expires the endpoints |
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// are considered stale and should be marked unhealthy. |
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// Defaults to 0 which means endpoints never go stale. |
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google.protobuf.Duration endpoint_stale_after = 4 [(validate.rules).duration = {gt {}}]; |
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} |
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// Name of the cluster. This will be the :ref:`service_name |
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// <envoy_api_field_config.cluster.v3.Cluster.EdsClusterConfig.service_name>` value if specified |
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// in the cluster :ref:`EdsClusterConfig |
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// <envoy_api_msg_config.cluster.v3.Cluster.EdsClusterConfig>`. |
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string cluster_name = 1 [(validate.rules).string = {min_bytes: 1}]; |
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// List of endpoints to load balance to. |
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repeated LocalityLbEndpoints endpoints = 2; |
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// Map of named endpoints that can be referenced in LocalityLbEndpoints. |
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// [#not-implemented-hide:] |
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map<string, Endpoint> named_endpoints = 5; |
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// Load balancing policy settings. |
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Policy policy = 4; |
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}
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