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30 lines
1.3 KiB
30 lines
1.3 KiB
.. _config_http_conn_man_rds: |
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Route discovery service (RDS) |
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============================= |
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The route discovery service (RDS) API is an optional API that Envoy will call to dynamically fetch |
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:ref:`route configurations <config_http_conn_man_route_table>`. A route configuration includes both |
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HTTP header modifications, virtual hosts, and the individual route entries contained within each |
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virtual host. Each :ref:`HTTP connection manager filter <config_http_conn_man>` can independently |
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fetch its own route configuration via the API. |
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* :ref:`v1 API reference <config_http_conn_man_rds_v1>` |
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* :ref:`v2 API reference <v2_grpc_streaming_endpoints>` |
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Statistics |
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---------- |
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RDS has a statistics tree rooted at *http.<stat_prefix>.rds.<route_config_name>.*. |
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Any ``:`` character in the ``route_config_name`` name gets replaced with ``_`` in the |
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stats tree. The stats tree contains the following statistics: |
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.. csv-table:: |
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:header: Name, Type, Description |
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:widths: 1, 1, 2 |
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config_reload, Counter, Total API fetches that resulted in a config reload due to a different config |
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update_attempt, Counter, Total API fetches attempted |
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update_success, Counter, Total API fetches completed successfully |
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update_failure, Counter, Total API fetches that failed (either network or schema errors) |
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version, Gauge, Hash of the contents from the last successful API fetch
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