Prometheus exposition format
The Prometheus exposition format is a text-based standard for representing metrics, labels, values, and metadata for collection by monitoring systems.
Cloud Observability in Action
The Prometheus exposition format is a text-based format for representing metrics and their labels for collection by monitoring systems.
- How it is used
- Uses a standardized wire representation for exposing metrics that agents can scrape for dashboards, alerts, and operational assessment.
- How deep it goes
- Explains representation and scrape flow, but stops short of a complete exposition grammar or detailed label-handling rules.
- Examples
- Shows front-end service output and Kubernetes API-server metrics, including counters, histograms, help text, types, and labels.
- What you can do after
- Operate/configure metric collection by inspecting /metrics endpoints, querying Kubernetes raw metrics, and selecting useful signals for retention.
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Learn Docker in a Month of Lunches, Second Edition
Prometheus format is a text-based exposition format in which named metrics are represented with values, help text, and data types.
- How it is used
- Supports exposing Docker and container metrics for Prometheus-based monitoring.
- How deep it goes
- Defines the text structure and collection workflow but stops short of specifying the complete format grammar.
- Examples
- Uses Docker’s port 9323 endpoint, the metrics-addr setting, and sample metrics exposed through the HTTP API.
- What you can do after
- Operate Docker metrics export and verify the resulting endpoint before connecting Prometheus.
Read how Learn Docker in a Month of Lunches, Second Edition explains Prometheus exposition format →
Related concepts
- Dockerproduced by · Docker is a platform and ecosystem for building, distributing, and running applications in containers.
- OpenMetricsalternative to · OpenMetrics is an open standard defining a text-based format for exposing metrics and associated metadata such as exemplars.
- Kubernetesused by · Kubernetes is an open-source platform for orchestrating and automating the deployment, scaling, and management of containerized workloads across computing clusters.
- Prometheusproduced by · Prometheus is an open-source monitoring and alerting system that collects, stores, and queries time-series metrics.
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