Question - How to monitor the Kubernetes cluster? 
          
        
        Answer - 
        
Prometheus is used for Kubernetes monitoring. The Prometheus ecosystem consists of multiple components.
- Mainly Prometheus server which scrapes and stores time-series data.
 - Client libraries for instrumenting application code.
 - Push gateway for supporting short-lived jobs.
 - Special-purpose exporters for services like StatsD, HAProxy, Graphite, etc.
 - An alert manager to handle alerts on various support tools.