manifests: remove prometheus.io/scrape annotations

These annotations made sense in pre v1.3.0 Prometheus releases, however,
with >=v1.3.0 and the Prometheus Operator these annotations are more
confusing then helpful.

README.md

@@ -43,10 +43,6 @@ To tear it all down again, run:
 hack/cluster-monitoring/teardown
 ```
 
-> All services in the manifest still contain the `prometheus.io/scrape = true`
-> annotations. It is not used by the Prometheus Operator. They remain for
-> pre Prometheus v1.3.0 deployments as in [this example configuration](https://github.com/prometheus/prometheus/blob/6703404cb431f57ca4c5097bc2762438d3c1968e/documentation/examples/prometheus-kubernetes.yml).
-
 ## Monitoring custom services
 
 The example manifests in [/manifests/examples/example-app](/manifests/examples/example-app)
@@ -133,4 +129,4 @@ default       kubernetes                                     172.17.4.101:443
 kube-system   kube-controller-manager-prometheus-discovery   10.2.30.2:10252    1h
 kube-system   kube-scheduler-prometheus-discovery            10.2.30.4:10251    1h
 monitoring    etcd-k8s                                       172.17.4.51:2379   1h
-```
+```
\ No newline at end of file

manifests/etcd/etcd-bootkube-gce.yaml

@@ -5,8 +5,6 @@ metadata:
   labels:
     app: etcd
     etcd: k8s
-  annotations:
-    prometheus.io/scrape: 'true'
 spec:
   type: ClusterIP
   clusterIP: None
@@ -29,4 +27,4 @@ subsets:
   ports:
   - name: api
     port: 2379
-    protocol: TCP
+    protocol: TCP
\ No newline at end of file

manifests/etcd/etcd-bootkube-vagrant-multi.yaml

@@ -5,8 +5,6 @@ metadata:
   labels:
     app: etcd
     etcd: k8s
-  annotations:
-    prometheus.io/scrape: 'true'
 spec:
   type: ClusterIP
   clusterIP: None
@@ -29,4 +27,4 @@ subsets:
   ports:
   - name: api
     port: 2379
-    protocol: TCP
+    protocol: TCP
\ No newline at end of file

manifests/examples/example-app/example-app.yaml

@@ -4,8 +4,6 @@ metadata:
   name: example-app
   labels:
     tier: frontend
-  annotations:
-    prometheus.io/scrape: 'true'
 spec: 
   selector: 
     app: example-app 

manifests/exporters/kube-state-metrics-svc.yaml

 apiVersion: v1
 kind: Service
 metadata:
-  annotations:
-    prometheus.io/scrape: 'true'
   labels:
     app: kube-state-metrics
   name: kube-state-metrics

manifests/exporters/node-exporter-svc.yaml

@@ -3,8 +3,6 @@ kind: Service
 metadata:
   labels:
     app: node-exporter
-  annotations:
-    prometheus.io/scrape: 'true'
   name: node-exporter
 spec:
   type: ClusterIP

manifests/grafana/grafana-svc.yaml

@@ -4,8 +4,6 @@ metadata:
   name: grafana
   labels:
     app: grafana
-  annotations:
-    prometheus.io/scrape: 'true'
 spec:
   type: NodePort
   ports:
@@ -14,4 +12,4 @@ spec:
     protocol: TCP
     nodePort: 30902
   selector:
-    app: grafana
+    app: grafana
\ No newline at end of file

manifests/k8s/kube-controller-manager-bootkube-vagrant-multi.yaml

@@ -4,8 +4,6 @@ metadata:
   name: kube-controller-manager-prometheus-discovery
   labels:
     k8s-app: kube-controller-manager
-  annotations:
-    prometheus.io/scrape: 'true'
 spec:
   selector:
     k8s-app: kube-controller-manager

manifests/k8s/kube-scheduler-bootkube-vagrant-multi.yaml

@@ -4,8 +4,6 @@ metadata:
   name: kube-scheduler-prometheus-discovery
   labels:
     k8s-app: kube-scheduler
-  annotations:
-    prometheus.io/scrape: 'true'
 spec:
   selector:
     k8s-app: kube-scheduler