Monitoring Apache Pulsar’s Health with Pulsar Heartbeat

Apache Pulsar Heartbeat is an open-source tool designed to monitor the health and performance of Apache Pulsar clusters in real time. It addresses limitations of Prometheus metrics by generating synthetic workloads continuously across various protocols, providing insights into end-to-end system availability and latency. Key features include pub-sub tests, WebSocket availability checks, broker health monitoring, admin REST API testing, Kubernetes integration for discovering replicas, geo-replication testing, and alert generation through OpsGenie and PagerDuty integrations. Pulsar Heartbeat is available as a standalone tool or integrated into Luna Streaming and Astra Streaming services.