Prometheus
Prometheus pulls metrics over HTTP, stores them in a time series database and offers the PromQL query language and alert rules. Grafana draws the dashboards. On AWS the equivalent is CloudWatch.
Key concepts #
- Exporter: exposes the metrics of a system.
- PromQL: the query language.
- Alertmanager: routes alerts.
Learn it #
See Istio in a local Kubernetes cluster and the Terraform Helm provider.
Install it and write your first queries with Install Prometheus with Docker.
More tutorials that use Prometheus
Related tutorials
- Docker & Rancher Desktop Tutorials
Install Prometheus with Docker: Scrape Metrics and Write PromQL Queries
Run Prometheus in a container, scrape a Node Exporter and your own targets, learn the basic PromQL queries and create an alert rule you can test locally.
Observability
Grafana
Grafana is an open source platform to build dashboards and alerts from metrics, logs and traces stored in many data sources.
- Terraform & OpenTofu Tutorials
Regex in Terraform, Ansible and Prometheus: Functions, Filters and Matchers
Use regular expressions in Terraform regex(), regexall() and replace(), in variable validation, in Ansible regex_search and lineinfile, and in Prometheus label matchers.