Prometheus is an open-source system monitoring and alerting toolkit that is originally built at SoundCloud. The Prometheus project comprehends multiple interlocking components entailing: Prometheus Server: This serves as the system’s brain by gathering various metrics and store them in a time-series database. Prometheus majorly scrapes metrics from applications and services (like Docker containers) at designated intervals utilizing the Prometheus client libraries whereas other systems monitoring tools wait to receive information. Prometheus Client Libraries: These libraries help users integrate their services by sending metrics and data in a format that can be understood by Prometheus. Prometheus Alertmanager: This sends alerts and notifications to designated users when the tool senses anomalies, glitches, and performance issues. Prometheus Visualisation Tools: It is used to display metrics and data in a human-readable format. Apart from this, various Prometheus users integrate the tool with Grafana which is an open-source web application for analytics and data visualization. Features: • It has no reliance on distributed storage; single server nodes are autonomous • Time series collection happens via a pull model over HTTP • Pushing time series is supported via an intermediary gateway • Targets are discovered via service discovery or static configuration • Availability of multiple modes of graphing and dashboarding support