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[Prometheus] Relabelling – Custom “__name__” to your mind

Posted on December 15, 2021 By nim No Comments on [Prometheus] Relabelling – Custom “__name__” to your mind

Case chúng ta là ntn. Tôi nhận metrics từ 1 Recording Rules và source_labels:[__name__] như ảnh.

Tôi muốn chuyển nó từ federate:istio_request_duration_milliseconds_bucket:rate1m
thành như sau: istio_request_duration_milliseconds_bucket

Câu hỏi làm sao bạn để ý dòng regex: ‘federate:(.*):rate1m’ trong đoạn code bên dưới.

    # remote cluster
    - job_name: 'federate'
      scrape_interval: 10s
      honor_labels: true
      metrics_path: '/federate'
      params:
        'match[]':
          - '{__name__=~"federate:(.*)"}'
      static_configs:
      - targets:
        - '192.168.101.51:32166'
        labels:
          cluster: 'cluster2'
      metric_relabel_configs:
      - source_labels: [__name__]
        regex: 'federate:(.*):rate1m'
        target_label: __name__
        action: replace
Nó lấy giá trị ở (.*) rồi replace (thay thế) value của key __name__
Mình sẽ query istio_request_duration_milliseconds_bucket

Nếu bạn ko metric_relabel_configs thì bạn phải query như sau:
federate:istio_request_duration_milliseconds_bucket:rate1m

Prometheus, Uncategorized

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