Adapt public IP gathering and other

docs/10-configuring-kubectl.md

@@ -8,29 +8,25 @@ In this lab you will generate a kubeconfig file for the `kubectl` command line u
 
 Each kubeconfig requires a Kubernetes API Server to connect to. To support high availability the IP address assigned to the external load balancer fronting the Kubernetes API Servers will be used.
 
-Generate a kubeconfig file suitable for authenticating as the `admin` user:
+Generate a kubeconfig file suitable for authenticating as the `admin` user (replace MY_PUBLIC_IP_ADDRESS with your public IP address on the `gateway-01` VM):
 
 ```bash
-{
-  KUBERNETES_PUBLIC_ADDRESS=$(gcloud compute addresses describe kubernetes-the-hard-way \
-    --region $(gcloud config get-value compute/region) \
-    --format 'value(address)')
+KUBERNETES_PUBLIC_ADDRESS=MY_PUBLIC_IP_ADDRESS
 
-  kubectl config set-cluster kubernetes-the-hard-way \
+kubectl config set-cluster kubernetes-the-hard-way \
   --certificate-authority=ca.pem \
   --embed-certs=true \
   --server=https://${KUBERNETES_PUBLIC_ADDRESS}:6443
 
-  kubectl config set-credentials admin \
+kubectl config set-credentials admin \
   --client-certificate=admin.pem \
   --client-key=admin-key.pem
 
-  kubectl config set-context kubernetes-the-hard-way \
+kubectl config set-context kubernetes-the-hard-way \
   --cluster=kubernetes-the-hard-way \
   --user=admin
 
-  kubectl config use-context kubernetes-the-hard-way
-}
+kubectl config use-context kubernetes-the-hard-way
 ```
 
 ## Verification
@@ -41,7 +37,7 @@ Check the health of the remote Kubernetes cluster:
 kubectl get componentstatuses
 ```
 
-> output
+> Output:
 
 ```bash
 NAME                 STATUS    MESSAGE             ERROR
@@ -58,7 +54,7 @@ List the nodes in the remote Kubernetes cluster:
 kubectl get nodes
 ```
 
-> output
+> Output:
 
 ```bash
 NAME       STATUS   ROLES    AGE    VERSION