.. _config_health_checkers_thrift: Thrift Health Checker ===================== The Thrift Health Checker (with :code:`envoy.health_checkers.thrift` as name) uses Thrift requests, responses and exceptions to check upstream hosts. It sends a request with :ref:`method_name <envoy_v3_api_field_extensions.health_checkers.thrift.v3.Thrift.method_name>` and expects a success response in exchange. The upstream host can also respond with an exception to cause the check to fail. The :ref:`transport <envoy_v3_api_field_extensions.health_checkers.thrift.v3.Thrift.transport>` and :ref:`protocol <envoy_v3_api_field_extensions.health_checkers.thrift.v3.Thrift.protocol>` types to be set for each health check request must be configured to enable Thrift health checks. The sequence id is always 0 for each health check request. An example for :ref:`custom_health_check <envoy_v3_api_msg_config.core.v3.HealthCheck.CustomHealthCheck>` using the Thrift health checker is shown below: .. code-block:: yaml custom_health_check: name: envoy.health_checkers.thrift typed_config: "@type": type.googleapis.com/envoy.extensions.health_checkers.thrift.v3.Thrift method_name: ping transport: HEADER protocol: BINARY * :ref:`v3 API reference <envoy_v3_api_msg_config.core.v3.HealthCheck.CustomHealthCheck>`