kube-prometheus: Making kubelets, kubescheduler, kube controller and kube state exporters optional (#1525)

* Helm: Improving readme instructions for testing helm chart locally

Adding note about where to run commands from and also breaking up large bash commands into multiple lines for simple copy paste.

* kube-prometheus: Making kubelets, kubescheduler, kube controller and kube state exporters optional

When running prometheus operator on hosted kuberenetes like GCE, few of the exporters are optional, so adding ability to conditional installations.

Fixes #1001, #355, #845

* Update Chart.yaml

* Update Chart.yaml

helm/README.md

@@ -20,9 +20,12 @@ helm install coreos/kube-prometheus --name kube-prometheus --namespace monitorin
 
 
 ```
+# From top directory i.e. prometheus-operator
 helm install helm/prometheus-operator --name prometheus-operator --namespace monitoring
 mkdir -p helm/kube-prometheus/charts
-helm package -d helm/kube-prometheus/charts helm/alertmanager helm/grafana helm/prometheus  helm/exporter-kube-dns helm/exporter-kube-scheduler helm/exporter-kubelets helm/exporter-node helm/exporter-kube-controller-manager helm/exporter-kube-etcd helm/exporter-kube-state helm/exporter-coredns helm/exporter-kubernetes
+helm package -d helm/kube-prometheus/charts helm/alertmanager helm/grafana helm/prometheus  helm/exporter-kube-dns \
+helm/exporter-kube-scheduler helm/exporter-kubelets helm/exporter-node helm/exporter-kube-controller-manager \
+helm/exporter-kube-etcd helm/exporter-kube-state helm/exporter-coredns helm/exporter-kubernetes
 helm install helm/kube-prometheus --name kube-prometheus --namespace monitoring
 
 ```

helm/kube-prometheus/Chart.yaml

@@ -7,4 +7,4 @@ maintainers:
 name: kube-prometheus
 sources:
   - https://github.com/coreos/prometheus-operator
-version: 0.0.84
+version: 0.0.85

helm/kube-prometheus/requirements.yaml

@@ -20,6 +20,7 @@ dependencies:
     version: 0.1.9
     #e2e-repository: file://../exporter-kube-controller-manager
     repository: https://s3-eu-west-1.amazonaws.com/coreos-charts/stable/
+    condition: deployKubeControllerManager
 
   - name: exporter-kube-dns
     version: 0.1.7
@@ -37,16 +38,19 @@ dependencies:
     version: 0.1.8
     #e2e-repository: file://../exporter-kube-scheduler
     repository: https://s3-eu-west-1.amazonaws.com/coreos-charts/stable/
+    condition: deployKubeScheduler
 
   - name: exporter-kube-state
     version: 0.2.3
     #e2e-repository: file://../exporter-kube-state
     repository: https://s3-eu-west-1.amazonaws.com/coreos-charts/stable/
+    condition: deployKubeState
 
   - name: exporter-kubelets
     version: 0.2.10
     #e2e-repository: file://../exporter-kubelets
     repository: https://s3-eu-west-1.amazonaws.com/coreos-charts/stable/
+    condition: deployKubelets
 
   - name: exporter-kubernetes
     version: 0.1.9

helm/kube-prometheus/values.yaml

@@ -4,6 +4,18 @@ deployExporterNode: True
 # Grafana
 deployGrafana: True
 
+# Kubelets
+deployKubelets: True
+
+# Kube-scheduler
+deployKubeScheduler: True
+
+# Controller Manager
+deployKubeControllerManager: True
+
+# Kube state
+deployKubeState: True
+
 ## If true, create & use RBAC resources resp. Pod Security Policies
 ##
 global: