Update k8s201.md

docs/user-guide/walkthrough/k8s201.md

@@ -37,7 +37,7 @@ For example, here is the nginx Pod definition with labels ([pod-nginx-with-label
 Create the labeled Pod ([pod-nginx-with-label.yaml](/docs/user-guide/walkthrough/pod-nginx-with-label.yaml)):
 
 ```shell
-kubectl create -f docs/user-guide/walkthrough/pod-nginx-with-label.yaml
+kubectl create -f https://k8s.io/docs/user-guide/walkthrough/pod-nginx-with-label.yaml
 ```
 
 List all Pods with the label `app=nginx`:
@@ -46,6 +46,12 @@ List all Pods with the label `app=nginx`:
 kubectl get pods -l app=nginx
 ```
 
+Delete the Pod by label:
+
+```shell
+kubectl delete pod -l app=nginx
+```
+
 For more information, see [Labels](/docs/concepts/overview/working-with-objects/labels/).
 They are a core concept used by two additional Kubernetes building blocks: Deployments and Services.
 
@@ -67,10 +73,8 @@ Here is a Deployment that instantiates two nginx Pods:
 
 Create an nginx Deployment:
 
-Download the `deployment.yaml` above by clicking on the file name and copy to your local directory.
-
 ```shell
-kubectl create -f ./deployment.yaml
+kubectl create -f https://k8s.io/docs/user-guide/walkthrough/deployment.yaml
 ```
 
 List all Deployments:
@@ -90,10 +94,8 @@ contains the desired changes:
 
 {% include code.html language="yaml" file="deployment-update.yaml" ghlink="/docs/user-guide/walkthrough/deployment-update.yaml" %}
 
-Download ./deployment-update.yaml and copy to your local directory.
-
 ```shell
-kubectl apply -f ./deployment-update.yaml
+kubectl apply -f https://k8s.io/docs/user-guide/walkthrough//deployment-update.yaml
 ```
 
 Watch the Deployment create Pods with new names and delete the old Pods:
@@ -125,7 +127,7 @@ For example, here is a service that balances across the Pods created in the prev
 Create an nginx service ([service.yaml](/docs/user-guide/walkthrough/service.yaml)):
 
 ```shell
-kubectl create -f docs/user-guide/walkthrough/service.yaml
+kubectl create -f https://k8s.io/docs/user-guide/walkthrough/service.yaml
 ```
 
 List all services:
@@ -150,6 +152,14 @@ $ kubectl delete pod busybox # Clean up the pod we created with "kubectl run"
 {% endraw %}
 ```
 
+The service definition [exposed the Nginx Service](/docs/tasks/inject-data-application/downward-api-volume-expose-pod-information/) as port 8000 (`$SERVCE_PORT`). We can also access the service from a host running Kubernetes using that port:
+
+```shell
+wget -qO- http://$SERVICE_IP:$SERVICE_PORT # Run on a Kubernetes host
+```
+
+(This works on AWS with Weave.)
+
 To delete the service by name:
 
 ```shell