anchor.diff:  
   Kops needs a "`state store`" to store configuration information of the cluster.  For example, how many nodes in the cluster, the instance type of each node, and the Kubernetes version. The state is stored during the initial cluster creation. Any subsequent changes to the cluster are also persisted to this store. As of now, Amazon S3 is the only supported storage mechanism. Create an S3 bucket and pass that to the kops CLI during cluster creation.
   
  -NOTE: The bucket name must be unique otherwise you will encounter an error on deployment. For demonstration purposes only, we will use an example bucket name of `example-state-store`.
  +NOTE: The bucket name must be unique otherwise you will encounter an error on deployment. We will use an example bucket name of `example-state-store-` and add a randomly generated string to the end.
   
       # create variables for bucket, state store and cluster names
  -    export S3_BUCKET=example-state-store
  +    export S3_BUCKET=example-state-store-$(cat /dev/random | LC_CTYPE=C tr -dc "[:alpha:]" | tr '[:upper:]' '[:lower:]' | head -c 32)
       export KOPS_STATE_STORE=s3://${S3_BUCKET}
   
       # use aws cli to create bucket
  
positive.code:   kube-system   kube-apiserver-ip-172-20-62-108.ec2.internal            1/1       Running   6          16m
    kube-system   kube-apiserver-ip-172-20-79-64.ec2.internal             1/1       Running   2          12m
  
  The output shows three pods, one each for API server, corresponding to the three master nodes. This output is from a cluster with three master nodes. The output may be different if your cluster was created with different number of masters. 
  
  Search for the `--runtime-config` option as shown:
  
  
negative.code:   Client Version: version.Info{Major:"1", Minor:"8", GitVersion:"v1.8.1", GitCommit:"f38e43b221d08850172a9a4ea785a86a3ffa3b3a", GitTreeState:"clean", BuildDate:"2017-10-12T00:45:05Z", GoVersion:"go1.9.1", Compiler:"gc", Platform:"darwin/amd64"}
    Server Version: version.Info{Major:"1", Minor:"7", GitVersion:"v1.7.4", GitCommit:"793658f2d7ca7f064d2bdf606519f9fe1229c381", GitTreeState:"clean", BuildDate:"2017-08-17T08:30:51Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}
  
  It shows that Kubectl CLI version is 1.8.1 and the server version is 1.7.4.
  
  ==== Multi-master, multi-node, multi-az DNS-based cluster
  
  