CODEWITHSUNDEEP
prometheus
LEo
LEo

Reputation: 462

how to keep some special metrics for prometheus?

I use the following config for Prometheus, and found no go_info and go_gc_duration_seconds metrics:

config1

global:
  scrape_interval:     60s
  evaluation_interval: 15s

scrape_configs:
  - job_name: 'prometheus'
    scrape_interval: 3s

    metric_relabel_configs:
    - action: keep
      source_labels:
      - __name__
      regex: go_info

    - action: keep
      source_labels:
      - __name__
      regex: go_gc_duration_seconds

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

when using the following config, I can found go_info and go_gc_duration_seconds metrics:

config2

global:
  scrape_interval:     60s
  evaluation_interval: 15s

scrape_configs:
  - job_name: 'ssli-prometheus'
    scrape_interval: 3s

    metric_relabel_configs:
    - action: keep
      source_labels:
      - __name__
      regex: go_info|go_gc_duration_seconds

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

if I want to keep a lot of metrics, I must add these metrics to regex fields, like this:

    metric_relabel_configs:
    - action: keep
      source_labels:
      - __name__
      regex: metrcis1|metrcis2|metrcis3|metrcis4......|metrcisN

I worried regex is too long, so can I config multiple keep action to keep these metrics? like this：

    metric_relabel_configs:
    - action: keep
      source_labels:
      - __name__
      regex: metrics1
    - action: keep
      source_labels:
      - __name__
      regex: metrics2
    - action: keep
      source_labels:
      - __name__
      regex: metrics3
      ...
    - action: keep
      source_labels:
      - __name__
      regex: metricsN

Upvotes: 1

Views: 1805

Answers (1)

Kamol Hasan
Kamol Hasan

Reputation: 13456

Prometheus supports RE2 syntax.

You can simplify your config by using regex. The following expression selects all metrics that have a name starting with metrics(ie. metrics1,metrics2,....,metricsN).

    - action: keep
      source_labels:
      - __name__
      regex: "metrics.*"

Upvotes: 1

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