kube-prometheus: extract ServiceMonitors into single files

Starting with Kubernetes 1.6 `kubectl apply` works for TPRs so we can
start using it, therefore using multiple files is no issue.

hack/cluster-monitoring/deploy

@@ -26,20 +26,6 @@ echo "done!"
 kctl apply -f manifests/exporters
 kctl apply -f manifests/grafana/grafana-credentials.yaml
 kctl apply -f manifests/grafana
-
+kctl apply -f manifests/prometheus/
-kctl apply -f manifests/prometheus/prometheus-k8s-rules.yaml
+kctl apply -f manifests/alertmanager/
-kctl apply -f manifests/prometheus/prometheus-k8s-service.yaml
-kctl apply -f manifests/prometheus/prometheus-cluster-role-binding.yaml
-kctl apply -f manifests/prometheus/prometheus-cluster-role.yaml
-kctl apply -f manifests/prometheus/prometheus-k8s-service-account.yaml
-
-kctl apply -f manifests/alertmanager/alertmanager-config.yaml
-kctl apply -f manifests/alertmanager/alertmanager-service.yaml
-
-# `kubectl apply` is currently not working for third party resources so we are
-# using `kubectl create` here for the time being.
-# (https://github.com/kubernetes/kubernetes/issues/29542)
-kctl create -f manifests/prometheus/prometheus-k8s-servicemonitors.yaml
-kctl create -f manifests/prometheus/prometheus-k8s.yaml
-kctl create -f manifests/alertmanager/alertmanager.yaml
 

manifests/prometheus/prometheus-k8s-service-monitor-alertmanager.yaml

@@ -0,0 +1,12 @@
+apiVersion: monitoring.coreos.com/v1alpha1
+kind: ServiceMonitor
+metadata:
+  labels:
+    alertmanager: main
+  name: alertmanager
+spec:
+  endpoints:
+  - port: web
+  selector:
+    matchExpressions:
+    - {key: alertmanager, operator: In, values: [main]}

manifests/prometheus/prometheus-k8s-service-monitor-apiserver.yaml

@@ -0,0 +1,23 @@
+apiVersion: monitoring.coreos.com/v1alpha1
+kind: ServiceMonitor
+metadata:
+  name: kube-apiserver
+  labels:
+    k8s-apps: https
+spec:
+  jobLabel: provider
+  selector:
+    matchLabels:
+      component: apiserver
+      provider: kubernetes
+  namespaceSelector:
+    matchNames:
+    - default
+  endpoints:
+  - port: https
+    interval: 15s
+    scheme: https
+    tlsConfig:
+      caFile: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
+      serverName: kubernetes
+    bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token

manifests/prometheus/prometheus-k8s-service-monitor-k8s-apps-http.yaml

@@ -0,0 +1,23 @@
+apiVersion: monitoring.coreos.com/v1alpha1
+kind: ServiceMonitor
+metadata:
+  name: k8s-apps-http
+  namespace: monitoring
+  labels:
+    k8s-apps: http
+spec:
+  jobLabel: k8s-app
+  selector:
+    matchExpressions:
+    - {key: k8s-app, operator: Exists}
+    - {key: k8s-app, operator: NotIn, values: [kubelet]}
+  namespaceSelector:
+    matchNames:
+    - kube-system
+  endpoints:
+  - port: http-metrics
+    interval: 15s
+  - port: http-metrics-dnsmasq
+    interval: 15s
+  - port: http-metrics-skydns
+    interval: 15s

manifests/prometheus/prometheus-k8s-service-monitor-kube-state-metrics.yaml

@@ -0,0 +1,19 @@
+apiVersion: monitoring.coreos.com/v1alpha1
+kind: ServiceMonitor
+metadata:
+  name: kube-state-metrics
+  namespace: monitoring
+  labels:
+    k8s-apps: http
+spec:
+  jobLabel: k8s-app
+  selector:
+    matchLabels:
+      k8s-app: kube-state-metrics
+  namespaceSelector:
+    matchNames:
+    - monitoring
+  endpoints:
+  - port: http-metrics
+    interval: 15s
+    honorLabels: true

manifests/prometheus/prometheus-k8s-service-monitor-kubelet.yaml

@@ -0,0 +1,17 @@
+apiVersion: monitoring.coreos.com/v1alpha1
+kind: ServiceMonitor
+metadata:
+  name: kubelet
+  labels:
+    k8s-apps: http
+spec:
+  jobLabel: k8s-app
+  selector:
+    matchLabels:
+      k8s-app: kubelet
+  namespaceSelector:
+    matchNames:
+    - kube-system
+  endpoints:
+  - port: http-metrics
+    interval: 15s

manifests/prometheus/prometheus-k8s-service-monitor-node-exporter.yaml

@@ -0,0 +1,18 @@
+apiVersion: monitoring.coreos.com/v1alpha1
+kind: ServiceMonitor
+metadata:
+  name: node-exporter
+  namespace: monitoring
+  labels:
+    k8s-apps: http
+spec:
+  jobLabel: k8s-app
+  selector:
+    matchLabels:
+      k8s-app: node-exporter
+  namespaceSelector:
+    matchNames:
+    - monitoring
+  endpoints:
+  - port: http-metrics
+    interval: 15s

manifests/prometheus/prometheus-k8s-service-monitor-prometheus.yaml

@@ -0,0 +1,12 @@
+apiVersion: monitoring.coreos.com/v1alpha1
+kind: ServiceMonitor
+metadata:
+  name: prometheus
+  labels:
+    prometheus: k8s
+spec:
+  endpoints:
+  - port: web
+  selector:
+    matchExpressions:
+    - {key: prometheus, operator: In, values: [k8s]}

manifests/prometheus/prometheus-k8s-servicemonitors.yaml

@@ -1,72 +0,0 @@
-apiVersion: monitoring.coreos.com/v1alpha1
-kind: ServiceMonitor
-metadata:
-  name: kube-apiserver
-  labels:
-    k8s-apps: https
-spec:
-  jobLabel: provider
-  selector:
-    matchLabels:
-      component: apiserver
-      provider: kubernetes
-  namespaceSelector:
-    matchNames:
-    - default
-  endpoints:
-  - port: https
-    interval: 15s
-    scheme: https
-    tlsConfig:
-      caFile: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
-      serverName: kubernetes
-    bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
----
-apiVersion: monitoring.coreos.com/v1alpha1
-kind: ServiceMonitor
-metadata:
-  name: k8s-apps-http
-  labels:
-    k8s-apps: http
-spec:
-  jobLabel: k8s-app
-  selector:
-    matchExpressions:
-    - {key: k8s-app, operator: Exists}
-  namespaceSelector:
-    matchNames:
-    - kube-system
-    - monitoring
-  endpoints:
-  - port: http-metrics
-    interval: 15s
-  - port: http-metrics-dnsmasq
-    interval: 15s
-  - port: http-metrics-skydns
-    interval: 15s
----
-apiVersion: monitoring.coreos.com/v1alpha1
-kind: ServiceMonitor
-metadata:
-  name: prometheus
-  labels:
-    prometheus: k8s
-spec:
-  endpoints:
-  - port: web
-  selector:
-    matchExpressions:
-    - {key: prometheus, operator: In, values: [k8s]}
----
-apiVersion: monitoring.coreos.com/v1alpha1
-kind: ServiceMonitor
-metadata:
-  labels:
-    alertmanager: main
-  name: alertmanager
-spec:
-  endpoints:
-  - port: web
-  selector:
-    matchExpressions:
-    - {key: alertmanager, operator: In, values: [main]}