Health discovery service (HDS) (proto)

service.health.v3.Capability

Defines supported protocols etc, so the management server can assign proper endpoints to healthcheck.

{
  "health_check_protocols": []
}

health_check_protocols: (repeated service.health.v3.Capability.Protocol)

Enum service.health.v3.Capability.Protocol

[service.health.v3.Capability.Protocol proto]

Different Envoy instances may have different capabilities (e.g. Redis) and/or have ports enabled for different protocols.

HTTP: (DEFAULT) ⁣

TCP: ⁣

REDIS: ⁣

service.health.v3.HealthCheckRequest

[service.health.v3.HealthCheckRequest proto]

{
  "node": {...},
  "capability": {...}
}

node: (config.core.v3.Node)

capability: (service.health.v3.Capability)

service.health.v3.EndpointHealth

[service.health.v3.EndpointHealth proto]

{
  "endpoint": {...},
  "health_status": ...
}

endpoint: (config.endpoint.v3.Endpoint)

health_status: (config.core.v3.HealthStatus)

service.health.v3.LocalityEndpointsHealth

[service.health.v3.LocalityEndpointsHealth proto]

Group endpoint health by locality under each cluster.

{
  "locality": {...},
  "endpoints_health": []
}

locality: (config.core.v3.Locality)

endpoints_health: (repeated service.health.v3.EndpointHealth)

service.health.v3.ClusterEndpointsHealth

[service.health.v3.ClusterEndpointsHealth proto]

The health status of endpoints in a cluster. The cluster name and locality should match the corresponding fields in ClusterHealthCheck message.

{
  "cluster_name": ...,
  "locality_endpoints_health": []
}

cluster_name: (string)

locality_endpoints_health: (repeated service.health.v3.LocalityEndpointsHealth)

service.health.v3.EndpointHealthResponse

[service.health.v3.EndpointHealthResponse proto]

{
  "endpoints_health": [],
  "cluster_endpoints_health": []
}

endpoints_health: (repeated service.health.v3.EndpointHealth) Deprecated - Flat list of endpoint health information.

cluster_endpoints_health: (repeated service.health.v3.ClusterEndpointsHealth) Organize Endpoint health information by cluster.

service.health.v3.HealthCheckRequestOrEndpointHealthResponse

[service.health.v3.HealthCheckRequestOrEndpointHealthResponse proto]

{
  "health_check_request": {...},
  "endpoint_health_response": {...}
}

health_check_request

(service.health.v3.HealthCheckRequest)

Only one of health_check_request, endpoint_health_response may be set.

endpoint_health_response

(service.health.v3.EndpointHealthResponse)

Only one of health_check_request, endpoint_health_response may be set.

service.health.v3.LocalityEndpoints

[service.health.v3.LocalityEndpoints proto]

{
  "locality": {...},
  "endpoints": []
}

locality: (config.core.v3.Locality)

endpoints: (repeated config.endpoint.v3.Endpoint)

service.health.v3.ClusterHealthCheck

[service.health.v3.ClusterHealthCheck proto]

The cluster name and locality is provided to Envoy for the endpoints that it health checks to support statistics reporting, logging and debugging by the Envoy instance (outside of HDS). For maximum usefulness, it should match the same cluster structure as that provided by EDS.

{
  "cluster_name": ...,
  "health_checks": [],
  "locality_endpoints": [],
  "transport_socket_matches": [],
  "upstream_bind_config": {...}
}

cluster_name: (string)

health_checks: (repeated config.core.v3.HealthCheck)

locality_endpoints: (repeated service.health.v3.LocalityEndpoints)

transport_socket_matches: (repeated config.cluster.v3.Cluster.TransportSocketMatch) Optional map that gets filtered by health_checks.transport_socket_match_criteria on connection when health checking. For more details, see config.cluster.v3.Cluster.transport_socket_matches.

upstream_bind_config: (config.core.v3.BindConfig) Optional configuration used to bind newly established upstream connections. If the address and port are empty, no bind will be performed.

service.health.v3.HealthCheckSpecifier

[service.health.v3.HealthCheckSpecifier proto]

{
  "cluster_health_checks": [],
  "interval": {...}
}

cluster_health_checks: (repeated service.health.v3.ClusterHealthCheck)

interval: (Duration) The default is 1 second.