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Knative Eventing metrics

Cluster administrators can view the following metrics for Knative Eventing components.

By aggregating the metrics from HTTP code, events can be separated into two categories; successful events (2xx) and failed events (5xx).

Broker ingress metrics

You can use the following metrics to debug the broker ingress, see how it is performing, and see which events are being dispatched by the ingress component.

Metric name Description Type Tags Unit

event_count

Number of events received by a broker.

Counter

broker_name, event_type, namespace_name, response_code, response_code_class, unique_name

Integer (no units)

event_dispatch_latencies

The time taken to dispatch an event to a channel.

Histogram

broker_name, event_type, namespace_name, response_code, response_code_class, unique_name

Milliseconds

Broker filter metrics

You can use the following metrics to debug broker filters, see how they are performing, and see which events are being dispatched by the filters. You can also measure the latency of the filtering action on an event.

Metric name Description Type Tags Unit

event_count

Number of events received by a broker.

Counter

broker_name, container_name, filter_type, namespace_name, response_code, response_code_class, trigger_name, unique_name

Integer (no units)

event_dispatch_latencies

The time taken to dispatch an event to a channel.

Histogram

broker_name, container_name, filter_type, namespace_name, response_code, response_code_class, trigger_name, unique_name

Milliseconds

event_processing_latencies

The time it takes to process an event before it is dispatched to a trigger subscriber.

Histogram

broker_name, container_name, filter_type, namespace_name, trigger_name, unique_name

Milliseconds

InMemoryChannel dispatcher metrics

You can use the following metrics to debug InMemoryChannel channels, see how they are performing, and see which events are being dispatched by the channels.

Metric name Description Type Tags Unit

event_count

Number of events dispatched by InMemoryChannel channels.

Counter

broker_name, container_name, filter_type, namespace_name, response_code, response_code_class, trigger_name, unique_name

Integer (no units)

event_dispatch_latencies

The time taken to dispatch an event from an InMemoryChannel channel.

Histogram

broker_name, container_name, filter_type, namespace_name, response_code, response_code_class, trigger_name, unique_name

Milliseconds

Event source metrics

You can use the following metrics to verify that events have been delivered from the event source to the connected event sink.

Metric name Description Type Tags Unit

event_count

Number of events sent by the event source.

Counter

broker_name, container_name, filter_type, namespace_name, response_code, response_code_class, trigger_name, unique_name

Integer (no units)

retry_event_count

Number of retried events sent by the event source after initially failing to be delivered.

Counter

event_source, event_type, name, namespace_name, resource_group, response_code, response_code_class, response_error, response_timeout

Integer (no units)