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jiangwei's questions

Martin Hope
jiangwei
Asked: 2020-07-17 11:24:36 +0800 CST
  • 4

While reading Prometheus Configuration documentation and some sample scrape configurations, I found some kubernetes_sd_configs with role service & role endpoints & role pod

- job_name: kube-state-metrics
  kubernetes_sd_configs:
  - role: endpoints
  relabel_configs:
  - action: labelmap
    regex: __meta_kubernetes_service_label_(.+)
  - action: keep
    regex: prometheus;kube-state-metrics
    source_labels:
    - __meta_kubernetes_namespace
    - __meta_kubernetes_pod_label_component

- honor_labels: true
  job_name: prometheus-pushgateway
  kubernetes_sd_configs:
  - role: service
  relabel_configs:
  - action: keep
    regex: pushgateway
    source_labels:
    - __meta_kubernetes_service_annotation_prometheus_io_probe

- job_name: node-exporter
  kubernetes_sd_configs:
  - role: pod
  relabel_configs:
  - action: labelmap
    regex: __meta_kubernetes_pod_label_(.+)
  - action: replace
    regex: ([^:]+)(?::\d+)?;(\d+)
    replacement: $1:$2
    source_labels:
    - __address__
    - __meta_kubernetes_pod_container_port_number
    target_label: __address__

Looks like all these roles can scrape the metrics from instances,

When shall we use endpoints & when shall we use pod?

EDIT: my real question is, which role (endpoints or pod) shall I use if they both discover the scraping target?

what do you prefer? any examples?

prometheus kubernetes