Doc: Add Prysm documentation

docs/architecture/prysm.md

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+---
+title: Prysm 
+---
+
+# Prysm 
+
+Prysm is a comprehensive observability CLI tool developed by CobaltCore for
+monitoring [Ceph](./ceph.md) storage clusters and RADOS Gateway (RGW)
+deployments. Prysm provides a multi-layered architecture designed to deliver
+real-time monitoring, data collection, and analysis across Ceph environments.
+
+Prysm employs a four-tier architecture consisting of Consumers, NATS
+messaging, Remote Producers, and Nearby Producers. This design enables flexible
+data collection from diverse sources within Ceph infrastructure. Remote
+Producers gather metrics via APIs from outside the monitored environment,
+collecting data such as RGW bucket notifications, quota usage, and RadosGW
+usage statistics. Nearby Producers operate within the same network as Ceph
+clusters, providing direct access to logs, metrics, and hardware sensors for
+lower latency and higher fidelity monitoring of disk health, kernel metrics,
+and resource usage.
+
+NATS serves as the messaging backbone, routing data between producers and
+consumers with low latency and reliable delivery. Consumers process this data
+to generate alerts, perform analytics, display real-time dashboards, and ensure
+compliance through log analysis.
+
+Prysm supports multiple output formats including console, NATS, and Prometheus,
+making it adaptable to existing monitoring infrastructure. It can function
+standalone for specific tasks such as providing Prometheus metrics endpoints or
+checking disk health through SMART attributes.
+
+Prysm addresses the operational complexity of managing large-scale Ceph
+deployments by providing unified observability across storage clusters, gateway
+services, and underlying hardware components.
+
+## See Also
+[The Prysm Repository](https://github.com/cobaltcore-dev/prysm)