Add script for custom Prometheus configuration. Update README.

README.md

@@ -70,3 +70,8 @@ To remove everything, just execute the `./teardown` script.
   * **update grafana dashboards:** add or change the existing dashboards in `assets/grafana/` and execute `scripts/generate-dashboards-configmap.sh`. Then apply the changes using `kubectl apply -f manifests/grafana/grafana-dashboards.cm.yaml`.
 
 **Note:** all the Grafana dashboards should have names ending in `-dashboard.json`.
+
+## Custom Prometheus configuration
+
+  The official documentation for Prometheus Operator custom configuration can be found here: [custom-configuration.md](https://github.com/coreos/prometheus-operator/blob/master/Documentation/custom-configuration.md)
+  If you wish, you can update the Prometheus configuration using the `./tools/custom-configuration/update_config` script.

deploy

@@ -3,8 +3,8 @@
 #########################################################################################
 #components default version
 #########################################################################################
-GRAFANA_DEFAULT_VERSION=4.6.0-beta2
-PROMETHEUS_DEFAULT_VERSION=v2.0.0-rc.1
+GRAFANA_DEFAULT_VERSION=4.6.0-beta3
+PROMETHEUS_DEFAULT_VERSION=v2.0.0-rc.2
 PROMETHEUS_OPERATOR_DEFAULT_VERSION=v0.14.0
 ALERTMANAGER_DEFAULT_VERSION=v0.9.1
 NODE_EXPORTER_DEFAULT_VERSION=v0.15.0

tools/custom-configuration/prometheus-k8s-secret/configmaps.json

@@ -0,0 +1 @@
+{"items":[{"key":"monitoring/prometheus-k8s-rules","checksum":"a228d0b1ffcaee89767e0763cb589c5341fbb504d75e5e005a16a053b44a7460"}]}