Management Server

    Envoy debug logs the fact that it is not able to establish a connection with the management server every time it attempts a connection.

    connected_state statistic provides a signal for monitoring this behavior.

    Management Server has a statistics tree rooted at control_plane. with the following statistics:

    Envoy discovers its various dynamic resources via discovery services referred to as xDS. Resources are requested via , by specifying a filesystem path to watch, initiating gRPC streams or polling a REST-JSON URL.

    The following statistics are generated for all subscriptions.

    Name

    Type

    Description

    config_reload

    Counter

    Total API fetches that resulted in a config reload due to a different config

    init_fetch_timeout

    Counter

    Total initial fetch timeouts

    update_attempt

    Counter

    Total API fetches attempted

    Counter

    Total API fetches completed successfully

    update_failure

    Counter

    Total API fetches that failed because of network errors

    update_rejected

    Counter

    Total API fetches that failed because of schema/validation errors

    version

    Gauge

    Hash of the contents from the last successful API fetch

    control_plane.connected_state

    Gauge

    A boolean (1 for connected and 0 for disconnected) that indicates the current connection state with management server