Prometheus & Grafana

Prerequisites

1. The ElastiFlow Unified Collector is running and the metrics endpoint is reachable. (Reachable @ http://0.0.0.0:8080/metrics)
2. Prometheus is installed & running and can reach the NetObserv Flow Metrics endpoint. (Prometheus default @ http://0.0.0.0:9090)
3. Grafana is installed & running and can reach Prometheus. (Grafana default @ http://0.0.0.0:3000)

ElastiFlow Metrics Endpoint

• Verify the ElastiFlow Unified Collector & Metrics Endpoint have successfully started (logs in /var/log/elastiflow/flowcoll/flowcoll.log):

2022-10-21T08:31:23.078-0700  info  pipeline/appserver.go:44  metrics exposed at http://0.0.0.0:8080/metrics

If another service is already using port 8080, you can change the port on which the collector listens by setting EF_API_PORT.

Grafana Installation Guide

• OS specific Grafana installation guides: https://grafana.com/docs/grafana/latest/setup-grafana/installation/
• Debian/Ubuntu installation guide: https://grafana.com/docs/grafana/latest/setup-grafana/installation/debian/
• RPM-based installation guide: https://grafana.com/docs/grafana/latest/setup-grafana/installation/rpm/

Prometheus Installation Guide

• Main Installation guides: https://prometheus.io/docs/prometheus/latest/installation/
• Precompiled binaries: https://prometheus.io/download/

Prometheus Configuration

1. Once Prometheus is installed edit prometheus.yml and add a job pointing to the ElastiFlow Unified Collector as in the following example:

Example default Prometheus configuration:

# my global config
global:
  scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).

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

# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any time series scraped from this config.
  - job_name: "prometheus"

    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.

    static_configs:
      - targets: ["localhost:9090"]

An ElastiFlow-specific Job:

    job_name: elastiflow-metrics-1
    scrape_interval: 15s
    metrics_path: /metrics

    scheme: http
    static_configs:
      - targets: ['192.168.3.18:8080']

Connect Grafana To Prometheus

1. Once Grafana is up and running; from the "Welcome To Grafana" page click the cogwheel in the bottom left corner, then click "Data Sources", and finally click "Add Data Source":
2. Select Prometheus
3. Name this Prometheus Datasource, type your Prometheus endpoint IP address and port in the "URL" field, and configure the authentication and "scrape interval" you have set up:

1. Click "Save & Test"

Import The ElastiFlow Metrics Dashboard

The ElastiFlow Metrics Dashboard can be found by searching Grafana Labs Dashboards: https://grafana.com/grafana/dashboards/

Direct Link: https://grafana.com/grafana/dashboards/17306-elastiflow-metrics/

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1. Import the Dashboard by entering the dashboard ID (17306) found after searching ElastiFlow Metrics in the Grafana Labs Dashboards search by going to Dashboards -> Import and clicking "Load":

1. Accept the default or give the dashboard a name and place it in the folder you'd like it to reside in. After this point to the Prometheus Datasource you previously connected above click "Import" and you are done.

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