Monitor Pulsar Functions

This document describes how to monitor Pulsar functions with Prometheus.

Monitoring with Prometheus

Prometheus is a monitoring and alerting system. It handles the multi-dimensional data. When you deploy Function Mesh in a Kubernetes cluster, the monitoring is setup automatically.

Pulsar Function metrics

All the Pulsar Functions metrics are labelled with the following labels:

• cluster: cluster=${pulsar_cluster}. ${pulsar_cluster} is the cluster name that you have configured in the broker.conf file.
• namespace: namespace=${pulsar_namespace}. ${pulsar_namespace} is the namespace name.

Name	Type	Description
pulsar_function_processed_successfully_total	Counter	The total number of messages processed successfully.
pulsar_function_processed_successfully_total_1min	Counter	The total number of messages processed successfully in the last 1 minute.
pulsar_function_system_exceptions_total	Counter	The total number of system exceptions.
pulsar_function_system_exceptions_total_1min	Counter	The total number of system exceptions in the last 1 minute.
pulsar_function_user_exceptions_total	Counter	The total number of user exceptions.
pulsar_function_user_exceptions_total_1min	Counter	The total number of user exceptions in the last 1 minute.
pulsar_function_process_latency_ms	Summary	The process latency in milliseconds.
pulsar_function_process_latency_ms_1min	Summary	The process latency in milliseconds in the last 1 minute.
pulsar_function_last_invocation	Gauge	The timestamp of the last invocation of the function.
pulsar_function_received_total	Counter	The total number of messages received from source.
pulsar_function_received_total_1min	Counter	The total number of messages received from source in the last 1 minute.
pulsarfunction_user_metric	Summary	The user-defined metrics.