krakend

docker-compose.yml

services:
  krakend:
    image: "devopsfaith/krakend:2.6.2"
    restart: unless-stopped
    container_name: krakend
    ports:
      - "8080:8080"
    volumes:
      - "./krakend.json:/etc/krakend/krakend.json:ro"

  prometheus:
    image: prom/prometheus:latest
    ports:
      - "9090:9090"
    volumes:
      - "./prometheus.yml:/etc/prometheus/prometheus.yml"

  grafana:
    image: grafana/grafana:latest
    ports:
      - "3000:3000"
    environment:
      GF_SECURITY_ADMIN_USER: krakend
      GF_SECURITY_ADMIN_PASSWORD: krakend
      GF_AUT_ANONYMOUS_ENABLED: "true"
    # volumes:
    #   - "./conf/provisioning/datasources:/etc/grafana/provisioning/datasources"
    #   - "./conf/provisioning/dashboards:/etc/grafana/provisioning/dashboards"
    #   - "./conf/data/dashboards:/var/lib/grafana/dashboards"

# https://grafana.com/orgs/krakendio/dashboards

krakend.json

{
    "version": 3,
    "endpoints": [
        {
            "endpoint": "/v1/foo-bar/{anything}",
            "method": "GET",
            "input_query_strings": [
                "items"
            ],
            "input_headers": [],
            "extra_config": {
                "qos/ratelimit/router": {
                    "max_rate": 1,
                    "capacity": 1
                }
            },
            "backend": [
                {
                    "url_pattern": "/anything/{anything}",
                    "method": "GET",
                    "host": [
                        "https://httpbin.org"
                    ]
                }
            ]
        }
    ],
    "extra_config": {
        "telemetry/opentelemetry": {
            "service_name": "krakend_prometheus_service",
            "metric_reporting_period": 1,
            "exporters": {
                "prometheus": [
                    {
                        "name": "local_prometheus",
                        "port": 9090,
                        "process_metrics": true,
                        "go_metrics": true
                    }
                ]
            }
        }
    }
}

prometheus.yml

global:
  scrape_interval: 60s

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

scrape_configs:
  - job_name: krakend_otel
    scrape_interval: 60s
    metrics_path: '/metrics'
    static_configs:
      - targets:
        - 'krakend:9091'
        labels:
          app: kotel_example