Web service for discovery of computer instances in Yandex.Сloud

Environment variables:

• YC_COMPUTE_SD_FOLDER_ID - Folder ID
• YC_COMPUTE_SD_SERVICE_ACCOUNT_ID - Service account ID with compute.viewer role
• YC_COMPUTE_SD_KEY_ID - Key ID in service account
• YC_COMPUTE_SD_PRIVATE_KEY - Private part of key

Add following labels to yandex.cloud instances:

• prometheus_*_port=*: e.g. prometheus_node_exporter_port=9100
• prometheus_job=*: e.g. prometheus_job=my_awesome_service

Without at least one prometheus_*_port label and prometheus_job label targets will be not discovered by service

Example response (GET /api/v1/discover) with following labels on yc instance:

• prometheus_node_exporter_port=9100
• prometheus_awesome_service_exporter_port=8080
• prometheus_job=awesome-service

[
  {
    "targets": [
      "127.0.0.1:9100",
      "127.0.0.1:8080"
    ],
    "labels": {
      "yc_id": "1234567890",
      "yc_folder_id": "1234567890",
      "yc_zone_id": "ru-central1-a",
      "yc_fqdn": "awesome-service-app-1.ru-central1.internal",
      "hostname": "awesome-service-app-1",
      "job": "awesome-service"
    }
  }
]