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Monitoring

Operator supports monitoring using Prometheus by providing a /metrics endpoint that Prometheus can scrape to gather various metrics.

Prerequisites

  1. 1.
    Operator application running and accessible.
  2. 2.
    Prometheus server installed and running.
  3. 3.
    Basic knowledge of how to configure Prometheus targets.
  4. 4.
    Grafana Dashboard for v3-operator installed

Setup Operator for Monitoring

Operator provides the flexibility to define the host and port for the metrics endpoint via environment variables:
  • ENABLE_METRICS: This defines whether the metrics endpoint should be enabled or not. By default, it is set to false.
  • METRICS_HOST: This defines the hostname or IP on which the metrics endpoint will be available.
  • METRICS_PORT: This defines the port on which the metrics endpoint will be available.
Ensure that these environment variables are set as per your requirements.
For example:
export ENABLE_METRICS=true
export METRICS_HOST=0.0.0.0
export METRICS_PORT=9100
You can also specify them by providing --enable-metrics, --metrics-port and --metrics-host flags to the start command.
Now, Operators's metrics will be available at http://[METRICS_HOST]:[METRICS_PORT]/metrics.

Configure Prometheus

To monitor Operator, you will need to configure Prometheus to scrape metrics from the exposed /metrics endpoint.
Add the following job configuration in your Prometheus configuration file (prometheus.yml):
scrape_configs:
- job_name: 'operator'
scrape_interval: 30s
static_configs:
- targets: [ '<METRICS_HOST>:<METRICS_PORT>' ]
Replace <METRICS_HOST> and <METRICS_PORT> with the values you've set in Operator.
This configuration tells Prometheus to scrape metrics from Operator every 30 seconds.