Introduction to Prometheus

Training Overview
Introduction
Prerequisites
Prometheus: An Overview
What is Prometheus?
What is Prometheus not?
System Architecture
Key Features and Selling Points
Data Model
Metrics Transfer Format
Query Language
Integrated Alerting
Service Discovery Integration
Simple Operation
Efficient Implementation
Knowledge Check
Installing and Setting Up Prometheus
Downloading Prometheus
Configuring Prometheus
Starting Prometheus
Viewing Monitored Targets
Using the Expression Browser
Knowledge Check
Review and Outlook
Summary
Further Steps

Starting Prometheus

Start Prometheus with your newly created configuration file:

./prometheus

By default, Prometheus stores its database in the ./data directory (this can be configured using the flag --storage.tsdb.path) and reads its configuration from the file prometheus.yml (flag --config.file).

NOTE: Any settings provided via the configuration file are reloadable during runtime (by sending a HUP signal or by triggering a reload via the HTTP API), while any changes to flag-based settings require a full server restart to take effect.

Prometheus should start up and show a status page about itself at http://<machine-ip>:9090/. Give it a couple of seconds to collect data about itself from its own HTTP metrics endpoint.

You can also verify that Prometheus is serving metrics about itself by navigating to its metrics endpoint: http://<machine-ip>:9090/metrics