metric-server README file is added (#27)

README file is added

charts/metric-server/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: karbon-metric-server
 home: https://github.com/nutanix/helm
 description: A Metric Server Helm chart for Nutanix Karbon
-version: 0.1.1
+version: 0.1.2
 appVersion: 0.3.7
 kubeVersion: ">= 1.13.0"
 maintainers:

charts/metric-server/README.md

@@ -0,0 +1,60 @@
+# Karbon metric server Helm chart
+
+This is the helm chart tailored for Nutanix Karbon
+
+# Kubernetes Metrics Server
+
+Metrics Server is a scalable, efficient source of container resource metrics for Kubernetes
+built-in autoscaling pipelines.
+
+Metrics Server collects resource metrics from Kubelets and exposes them in Kubernetes apiserver through [Metrics API] 
+for use by [Horizontal Pod Autoscaler] and [Vertical Pod Autoscaler]. Metrics API can also be accessed by `kubectl top`,
+making it easier to debug autoscaling pipelines.
+
+Metrics Server is not meant for non-autoscaling purposes. For example, don't use it to forward metrics to monitoring solutions, or as a source of monitoring solution metrics.
+
+Metrics Server offers:
+- A single deployment that works on most clusters
+- Scalable support up to 5,000 node clusters
+- Resource efficiency: Metrics Server uses 1m core of CPU and 3 MB of memory per node
+
+For the detail info, please visit below official git repo
+https://github.com/kubernetes-sigs/metrics-server
+
+## Prerequisites
+
+- Kubernetes 1.13 or later
+- Created base on metrics server 0.3.7 version
+- Metrics API group/version(metrics.k8s.io/v1beta1)
+- Karbon 2.1.x or later
+
+## Installing the Chart
+
+To install the chart with the name `metric-server`:
+
+```console
+helm repo add nutanix https://nutanix.github.io/helm/
+
+helm install --name metric-server nutanix/metric-server
+```
+
+## Uninstalling the Chart
+
+To uninstall/delete the `metric-server` deployment:
+
+```console
+$ helm delete metric-server
+```
+
+## Modified Configuration for Karbon deployment
+
+```console
+    deployment.yaml
+        ...
+        args:
+          - --cert-dir=/tmp
+          - --secure-port=4443
+          - --kubelet-insecure-tls
+          - --kubelet-preferred-address-types=InternalIP
+        ...
+``