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[stable/kube-state-metrics] allow configuring collectors (#2124)
kube-state-metrics has a collector for each kind of Kubernetes resource it collects metrics from. Each of those collectors directly influences the RBAC requirements for the Pods. Additionally due to the nature of how kube-state-metrics is versioned and released it is not easy to determine which collectors are using "alpha" APIs, which are not necessarily enabled in a cluster, but kube-state-metrics by default has all collectors enabled.
This commit is contained in:
Frederic Branczyk
committed by
Reinhard Nägele
Reinhard Nägele
parent
939e573a10
commit
92fd7ac0e1
@@ -12,12 +12,26 @@ $ helm install stable/kube-state-metrics
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## Configuration
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| Parameter | Description | Default |
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|---------------------------|---------------------------------------------------------|---------------------------------------------|
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| `image.repository` | The image repository to pull from | gcr.io/google_containers/kube-state-metrics |
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| `image.tag` | The image tag to pull from | v1.0.1 |
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| `image.pullPolicy` | Image pull policy | IfNotPresent |
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| `service.port` | The port of the container | 8080 |
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| `prometheusScrape` | Whether or not enable prom scrape | True |
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| `rbac.create` | If true, create & use RBAC resources | False |
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| `rbac.serviceAccountName` | ServiceAccount to be used (ignored if rbac.create=true) | default |
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| Parameter | Description | Default |
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|-------------------------------------|---------------------------------------------------------|---------------------------------------------|
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| `image.repository` | The image repository to pull from | gcr.io/google_containers/kube-state-metrics |
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| `image.tag` | The image tag to pull from | v1.0.1 |
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| `image.pullPolicy` | Image pull policy | IfNotPresent |
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| `service.port` | The port of the container | 8080 |
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| `prometheusScrape` | Whether or not enable prom scrape | True |
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| `rbac.create` | If true, create & use RBAC resources | False |
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| `rbac.serviceAccountName` | ServiceAccount to be used (ignored if rbac.create=true) | default |
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| `resources` | kube-state-metrics resource requests and limits | {} |
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| `collectors.daemonsets` | Enable the daemonsets collector. | true |
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| `collectors.deployments` | Enable the deployments collector. | true |
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| `collectors.limitranges` | Enable the limitranges collector. | true |
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| `collectors.nodes` | Enable the nodes collector. | true |
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| `collectors.pods` | Enable the pods collector. | true |
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| `collectors.replicasets` | Enable the replicasets collector. | true |
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| `collectors.replicationcontrollers` | Enable the replicationcontrollers collector. | true |
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| `collectors.resourcequotas` | Enable the resourcequotas collector. | true |
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| `collectors.services` | Enable the services collector. | true |
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| `collectors.jobs` | Enable the jobs collector. | true |
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| `collectors.cronjobs` | Enable the cronjobs collector. | true |
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| `collectors.statefulsets` | Enable the statefulsets collector. | true |
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| `collectors.persistentvolumeclaims` | Enable the persistentvolumeclaims collector. | true |
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@@ -1,5 +1,6 @@
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kube-state-metrics is a simple service that listens to the Kubernetes API server and generates metrics about the state of the objects.
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The exposed metrics can be found here: https://github.com/kubernetes/kube-state-metrics/#node-metrics.
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The exposed metrics can be found here:
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https://github.com/kubernetes/kube-state-metrics/tree/master/Documentation#documentation.
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The metrics are exported on the HTTP endpoint /metrics on the listening port.
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In your case, {{ template "kube-state-metrics.fullname" . }}.{{ .Release.Namespace }}.svc.cluster.local:{{ .Values.service.port }}/metrics
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@@ -9,29 +9,82 @@ metadata:
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release: {{ .Release.Name }}
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name: {{ template "kube-state-metrics.fullname" . }}
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rules:
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- apiGroups: [""]
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resources:
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- nodes
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- pods
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- services
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- resourcequotas
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- replicationcontrollers
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- limitranges
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- persistentvolumeclaims
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verbs: ["list", "watch"]
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{{ if .Values.collectors.daemonsets }}
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- apiGroups: ["extensions"]
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resources:
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- daemonsets
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verbs: ["list", "watch"]
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{{ end -}}
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{{ if .Values.collectors.deployments }}
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- apiGroups: ["extensions"]
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resources:
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- deployments
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verbs: ["list", "watch"]
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{{ end -}}
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{{ if .Values.collectors.limitranges }}
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- apiGroups: [""]
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resources:
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- limitranges
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verbs: ["list", "watch"]
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{{ end -}}
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{{ if .Values.collectors.nodes }}
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- apiGroups: [""]
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resources:
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- nodes
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verbs: ["list", "watch"]
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{{ end -}}
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{{ if .Values.collectors.pods }}
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- apiGroups: [""]
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resources:
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- pods
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verbs: ["list", "watch"]
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{{ end -}}
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{{ if .Values.collectors.replicasets }}
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- apiGroups: ["extensions"]
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resources:
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- replicasets
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verbs: ["list", "watch"]
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{{ end -}}
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{{ if .Values.collectors.replicationcontrollers }}
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- apiGroups: [""]
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resources:
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- replicationcontrollers
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verbs: ["list", "watch"]
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{{ end -}}
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{{ if .Values.collectors.resourcequotas }}
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- apiGroups: [""]
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resources:
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- resourcequotas
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verbs: ["list", "watch"]
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{{ end -}}
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{{ if .Values.collectors.services }}
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- apiGroups: [""]
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resources:
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- services
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verbs: ["list", "watch"]
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{{ end -}}
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{{ if .Values.collectors.jobs }}
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- apiGroups: ["batch"]
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resources:
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- jobs
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verbs: ["list", "watch"]
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{{ end -}}
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{{ if .Values.collectors.cronjobs }}
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- apiGroups: ["batch"]
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resources:
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- cronjobs
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verbs: ["list", "watch"]
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{{ end -}}
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{{ if .Values.collectors.statefulsets }}
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- apiGroups: ["apps"]
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resources:
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- statefulsets
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verbs: ["list", "watch"]
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- apiGroups: ["batch"]
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{{ end -}}
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{{ if .Values.collectors.persistentvolumeclaims }}
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- apiGroups: [""]
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resources:
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- cronjobs
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- jobs
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- persistentvolumeclaims
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verbs: ["list", "watch"]
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{{ end }}
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{{- end -}}
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@@ -13,7 +13,7 @@ roleRef:
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kind: ClusterRole
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name: {{ template "kube-state-metrics.fullname" . }}
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subjects:
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- kind: ServiceAccount
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name: {{ template "kube-state-metrics.fullname" . }}
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namespace: {{ .Release.Namespace }}
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- kind: ServiceAccount
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name: {{ template "kube-state-metrics.fullname" . }}
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namespace: {{ .Release.Namespace }}
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{{- end -}}
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@@ -18,6 +18,46 @@ spec:
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serviceAccountName: {{ if .Values.rbac.create }}{{ template "kube-state-metrics.fullname" . }}{{ else }}"{{ .Values.rbac.serviceAccountName }}"{{ end }}
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containers:
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- name: {{ .Chart.Name }}
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args:
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{{ if .Values.collectors.daemonsets }}
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- --collectors=daemonsets
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{{ end }}
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{{ if .Values.collectors.deployments }}
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- --collectors=deployments
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{{ end }}
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{{ if .Values.collectors.limitranges }}
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- --collectors=limitranges
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{{ end }}
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{{ if .Values.collectors.nodes }}
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- --collectors=nodes
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{{ end }}
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{{ if .Values.collectors.pods }}
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- --collectors=pods
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{{ end }}
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{{ if .Values.collectors.replicasets }}
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- --collectors=replicasets
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{{ end }}
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{{ if .Values.collectors.replicationcontrollers }}
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- --collectors=replicationcontrollers
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{{ end }}
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{{ if .Values.collectors.resourcequotas }}
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- --collectors=resourcequotas
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{{ end }}
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{{ if .Values.collectors.services }}
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- --collectors=services
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{{ end }}
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{{ if .Values.collectors.jobs }}
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- --collectors=jobs
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{{ end }}
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{{ if .Values.collectors.cronjobs }}
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- --collectors=cronjobs
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{{ end }}
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{{ if .Values.collectors.statefulsets }}
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- --collectors=statefulsets
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{{ end }}
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{{ if .Values.collectors.persistentvolumeclaims }}
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- --collectors=persistentvolumeclaims
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{{ end }}
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imagePullPolicy: {{ .Values.image.pullPolicy }}
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image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
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ports:
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@@ -15,3 +15,20 @@ rbac:
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create: false
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# Ignored if rbac.create is true
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serviceAccountName: default
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# Available collectors for kube-state-metrics. By default all available
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# collectors are enabled.
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collectors:
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daemonsets: true
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deployments: true
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limitranges: true
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nodes: true
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pods: true
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replicasets: true
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replicationcontrollers: true
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resourcequotas: true
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services: true
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jobs: true
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cronjobs: true
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statefulsets: true
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persistentvolumeclaims: true
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