anchor.diff:  
        kubectl get pods --namespace=kube-system
   
  -It shows an output as:
  +It shows output as:
   
   ```
   NAME                                                                  READY     STATUS    RESTARTS   AGE
  
positive.code: 
  http://prometheus.io/[Prometheus] is an open-source systems monitoring and alerting toolkit. Prometheus collects metrics from monitored targets by scraping metrics from HTTP endpoints on these targets.
  
  Different targets to scrape are defined in the Prometheus configuration file. Targets may be statically configured via the `static_configs` parameter in the configuration fle or dynamically discovered using one of the supported service-discovery mechanisms (Consul, DNS, Etcd, etc.).
  
  Prometheus gathers these metrics from https://github.com/kubernetes/kube-state-metrics[kube-state-metrics]. A wide variety of metrics are available and documented at https://github.com/kubernetes/kube-state-metrics/tree/master/Documentation.
  
  === Installation
  
  
negative.code: 
  Node exporter is defined as a DaemonSet, and so there is a single instance running on each node of the cluster.
  
  Once you save the etcd information then you can deploy the ConfigMap:
  
      kubectl create -f prometheus/templates/prometheus-configmap.yaml
  
  Next, deploy Prometheus into your cluster:
  
      kubectl create -f prometheus/templates/prometheus-deployment.yaml
  
  