install-prometheus-using-docker.md

Install Prometheus Using Docker

Category: DevOps

Prometheus is an open-source systems monitoring and alerting toolkit which is used to provide insights into application and operating system performance.

Prometheus collects and stores its metrics as time series data. Metrics information is stored with the timestamp at which it was recorded, alongside optional key-value pairs called labels. Data can be exported using "Exporters" for ingestion into other systems such as Grafana for observability.

Run Prometheus in a Docker container

Pull the latest Prometheus container from Docker Hub:

docker pull prom/prometheus

Create a config file called prometheus.yml for bootstrapping Prometheus:

global:
  scrape_interval:     15s
  evaluation_interval: 15s

alerting:
  alertmanagers:
    - static_configs:
        - targets:
          # - alertmanager:9093

rule_files:
  # - "first.rules"
  # - "second.rules"

scrape_configs:
  - job_name: prometheus
    static_configs:
      - targets: ['localhost:9090']

      
- job_name: "wmi-exporter"
    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.

    static_configs:
      # target is the IP address of the source system which is exporting metrics
      - targets: ['192.168.68.69:9182'] 

The above is a sample. Customise based on your requirements.

Start the Prometheus container using the config file:

docker run -d --name=prometheus -p 9090:9090 -v /path/to/prometheus.yml:/etc/prometheus/prometheus.yml prom/prometheus --config.file=/etc/prometheus/prometheus.yml

Confirm Prometheus is running by browsing to http://localhost:9090/targets/

See Prometheus Overview for more details.