mirror of
https://github.com/prometheus/prometheus.git
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0b1790ee44
This change updates port relabeling for pod and service discovery so the
relabeling regex matches addresses with or without declared ports. As
well, this change uses a consistent style in the replacement pattern
for the two expressions.
Previously, for both services or pods that did not have declared ports, the
relabel config regex would fail to match:
__meta_kubernetes_service_annotation_prometheus_io_port
regex: (.+)(?::\d+);(\d+)
__meta_kubernetes_pod_annotation_prometheus_io_port
regex: (.+):(?:\d+);(\d+)
Both regexes expected a <host>:<port> pattern.
The new regex matches addresses with or without declared ports by making
the :<port> pattern optional.
__meta_kubernetes_service_annotation_prometheus_io_port
__meta_kubernetes_pod_annotation_prometheus_io_port
regex: (.+)(?::\d+)?;(\d+)
187 lines
7.1 KiB
YAML
187 lines
7.1 KiB
YAML
# A scrape configuration for running Prometheus on a Kubernetes cluster.
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# This uses separate scrape configs for cluster components (i.e. API server, node)
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# and services to allow each to use different authentication configs.
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#
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# Kubernetes labels will be added as Prometheus labels on metrics via the
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# `labelmap` relabeling action.
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# Scrape config for API servers.
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#
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# Kubernetes exposes API servers as endpoints to the default/kubernetes
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# service so this uses `endpoints` role and uses relabelling to only keep
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# the endpoints associated with the default/kubernetes service using the
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# default named port `https`. This works for single API server deployments as
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# well as HA API server deployments.
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scrape_configs:
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- job_name: 'kubernetes-apiservers'
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kubernetes_sd_configs:
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- role: endpoints
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# Default to scraping over https. If required, just disable this or change to
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# `http`.
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scheme: https
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# This TLS & bearer token file config is used to connect to the actual scrape
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# endpoints for cluster components. This is separate to discovery auth
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# configuration because discovery & scraping are two separate concerns in
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# Prometheus. The discovery auth config is automatic if Prometheus runs inside
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# the cluster. Otherwise, more config options have to be provided within the
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# <kubernetes_sd_config>.
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tls_config:
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ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
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# If your node certificates are self-signed or use a different CA to the
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# master CA, then disable certificate verification below. Note that
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# certificate verification is an integral part of a secure infrastructure
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# so this should only be disabled in a controlled environment. You can
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# disable certificate verification by uncommenting the line below.
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#
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# insecure_skip_verify: true
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bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
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# Keep only the default/kubernetes service endpoints for the https port. This
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# will add targets for each API server which Kubernetes adds an endpoint to
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# the default/kubernetes service.
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relabel_configs:
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- source_labels: [__meta_kubernetes_namespace, __meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]
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action: keep
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regex: default;kubernetes;https
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- job_name: 'kubernetes-nodes'
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# Default to scraping over https. If required, just disable this or change to
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# `http`.
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scheme: https
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# This TLS & bearer token file config is used to connect to the actual scrape
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# endpoints for cluster components. This is separate to discovery auth
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# configuration because discovery & scraping are two separate concerns in
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# Prometheus. The discovery auth config is automatic if Prometheus runs inside
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# the cluster. Otherwise, more config options have to be provided within the
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# <kubernetes_sd_config>.
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tls_config:
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ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
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# If your node certificates are self-signed or use a different CA to the
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# master CA, then disable certificate verification below. Note that
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# certificate verification is an integral part of a secure infrastructure
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# so this should only be disabled in a controlled environment. You can
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# disable certificate verification by uncommenting the line below.
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#
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# insecure_skip_verify: true
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bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
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kubernetes_sd_configs:
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- role: node
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relabel_configs:
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- action: labelmap
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regex: __meta_kubernetes_node_label_(.+)
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# Scrape config for service endpoints.
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#
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# The relabeling allows the actual service scrape endpoint to be configured
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# via the following annotations:
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#
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# * `prometheus.io/scrape`: Only scrape services that have a value of `true`
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# * `prometheus.io/scheme`: If the metrics endpoint is secured then you will need
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# to set this to `https` & most likely set the `tls_config` of the scrape config.
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# * `prometheus.io/path`: If the metrics path is not `/metrics` override this.
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# * `prometheus.io/port`: If the metrics are exposed on a different port to the
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# service then set this appropriately.
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- job_name: 'kubernetes-service-endpoints'
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kubernetes_sd_configs:
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- role: endpoints
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relabel_configs:
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- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scrape]
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action: keep
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regex: true
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- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scheme]
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action: replace
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target_label: __scheme__
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regex: (https?)
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- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_path]
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action: replace
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target_label: __metrics_path__
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regex: (.+)
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- source_labels: [__address__, __meta_kubernetes_service_annotation_prometheus_io_port]
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action: replace
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target_label: __address__
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regex: (.+)(?::\d+)?;(\d+)
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replacement: $1:$2
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- action: labelmap
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regex: __meta_kubernetes_service_label_(.+)
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- source_labels: [__meta_kubernetes_namespace]
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action: replace
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target_label: kubernetes_namespace
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- source_labels: [__meta_kubernetes_service_name]
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action: replace
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target_label: kubernetes_name
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# Example scrape config for probing services via the Blackbox Exporter.
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#
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# The relabeling allows the actual service scrape endpoint to be configured
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# via the following annotations:
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#
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# * `prometheus.io/probe`: Only probe services that have a value of `true`
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- job_name: 'kubernetes-services'
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metrics_path: /probe
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params:
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module: [http_2xx]
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kubernetes_sd_configs:
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- role: service
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relabel_configs:
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- source_labels: [__meta_kubernetes_service_annotation_prometheus_io_probe]
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action: keep
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regex: true
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- source_labels: [__address__]
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target_label: __param_target
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- target_label: __address__
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replacement: blackbox
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- source_labels: [__param_target]
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target_label: instance
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- action: labelmap
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regex: __meta_kubernetes_service_label_(.+)
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- source_labels: [__meta_kubernetes_namespace]
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target_label: kubernetes_namespace
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- source_labels: [__meta_kubernetes_service_name]
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target_label: kubernetes_name
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# Example scrape config for pods
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#
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# The relabeling allows the actual pod scrape endpoint to be configured via the
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# following annotations:
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#
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# * `prometheus.io/scrape`: Only scrape pods that have a value of `true`
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# * `prometheus.io/path`: If the metrics path is not `/metrics` override this.
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# * `prometheus.io/port`: Scrape the pod on the indicated port instead of the default of `9102`.
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- job_name: 'kubernetes-pods'
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kubernetes_sd_configs:
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- role: pod
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relabel_configs:
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- source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_scrape]
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action: keep
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regex: true
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- source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_path]
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action: replace
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target_label: __metrics_path__
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regex: (.+)
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- source_labels: [__address__, __meta_kubernetes_pod_annotation_prometheus_io_port]
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action: replace
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regex: (.+)(?::\d+)?;(\d+)
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replacement: $1:$2
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target_label: __address__
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- action: labelmap
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regex: __meta_kubernetes_pod_label_(.+)
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- source_labels: [__meta_kubernetes_namespace]
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action: replace
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target_label: kubernetes_namespace
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- source_labels: [__meta_kubernetes_pod_name]
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action: replace
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target_label: kubernetes_pod_name
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