141 lines
3.6 KiB
Smarty
141 lines
3.6 KiB
Smarty
{{- define "feature.clusterMetrics.kubeDNS.alloy" }}
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{{- if or .Values.kubeDNS.enabled (and .Values.controlPlane.enabled (not (eq .Values.kubeDNS.enabled false))) }}
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{{- $metricAllowList := .Values.kubeDNS.metricsTuning.includeMetrics }}
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{{- $metricDenyList := .Values.kubeDNS.metricsTuning.excludeMetrics }}
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// KubeDNS
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discovery.kubernetes "kube_dns" {
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role = "endpoints"
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namespaces {
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names = ["kube-system"]
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}
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selectors {
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role = "endpoints"
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label = "k8s-app=kube-dns"
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}
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}
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discovery.relabel "kube_dns" {
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targets = discovery.kubernetes.kube_dns.targets
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// keep only the specified metrics port name, and pods that are Running and ready
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rule {
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source_labels = [
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"__meta_kubernetes_pod_container_port_name",
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"__meta_kubernetes_pod_phase",
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"__meta_kubernetes_pod_ready",
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]
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separator = "@"
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regex = "metrics@Running@true"
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action = "keep"
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}
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// drop any init containers
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rule {
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source_labels = ["__meta_kubernetes_pod_container_init"]
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regex = "true"
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action = "drop"
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}
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// set the namespace label
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rule {
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source_labels = ["__meta_kubernetes_namespace"]
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target_label = "namespace"
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}
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// set the pod label
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rule {
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source_labels = ["__meta_kubernetes_pod_name"]
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target_label = "pod"
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}
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// set the container label
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rule {
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source_labels = ["__meta_kubernetes_pod_container_name"]
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target_label = "container"
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}
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// set a workload label
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rule {
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source_labels = [
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"__meta_kubernetes_pod_controller_kind",
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"__meta_kubernetes_pod_controller_name",
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]
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separator = "/"
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target_label = "workload"
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}
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// remove the hash from the ReplicaSet
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rule {
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source_labels = ["workload"]
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regex = "(ReplicaSet/.+)-.+"
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target_label = "workload"
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}
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// set the app name if specified as metadata labels "app:" or "app.kubernetes.io/name:" or "k8s-app:"
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rule {
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action = "replace"
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source_labels = [
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"__meta_kubernetes_pod_label_app_kubernetes_io_name",
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"__meta_kubernetes_pod_label_k8s_app",
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"__meta_kubernetes_pod_label_app",
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]
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separator = ";"
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regex = "^(?:;*)?([^;]+).*$"
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replacement = "$1"
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target_label = "app"
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}
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// set the service label
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rule {
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source_labels = ["__meta_kubernetes_service_name"]
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target_label = "service"
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}
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// set a source label
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rule {
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action = "replace"
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replacement = "kubernetes"
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target_label = "source"
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}
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{{- if .Values.kubeDNS.extraDiscoveryRules }}
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{{ .Values.kubeDNS.extraDiscoveryRules | indent 2 }}
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{{- end }}
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}
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prometheus.scrape "kube_dns" {
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targets = discovery.relabel.kube_dns.output
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job_name = {{ .Values.kubeDNS.jobLabel | quote }}
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scheme = "http"
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scrape_interval = {{ .Values.kubeDNS.scrapeInterval | default .Values.global.scrapeInterval | quote }}
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clustering {
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enabled = true
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}
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{{- if or $metricAllowList $metricDenyList .Values.kubeDNS.extraMetricProcessingRules }}
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forward_to = [prometheus.relabel.kube_dns.receiver]
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}
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prometheus.relabel "kube_dns" {
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max_cache_size = {{ .Values.kubeDNS.maxCacheSize | default .Values.global.maxCacheSize | int }}
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{{- if $metricAllowList }}
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rule {
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source_labels = ["__name__"]
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regex = "up|scrape_samples_scraped|{{ $metricAllowList | join "|" }}"
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action = "keep"
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}
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{{- end }}
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{{- if $metricDenyList }}
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rule {
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source_labels = ["__name__"]
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regex = {{ $metricDenyList | join "|" | quote }}
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action = "drop"
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}
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{{- end }}
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{{- if .Values.kubeDNS.extraMetricProcessingRules }}
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{{ .Values.kubeDNS.extraMetricProcessingRules | indent 2 }}
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{{- end }}
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{{- end }}
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forward_to = argument.metrics_destinations.value
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}
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{{- end }}
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{{- end }}
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