<p>I have deployed our kubernetes cluster in AWS using the kube-up scripts and ec2 instances. Can someone help me in figuring out how to upgrade this cluster to 1.5.8 or to the latest kubernetes release.</p>

<p>The way I gained confidence about the kind of upgrade you are describing is by setting up a Vagrant cluster of 1.5 api and nodes against the etcd:2 servers that were used at the time of 1.5, and then practice upgrading them to understand the moving parts and ways it can go foul.</p>

<p>Your use of <code>kube-up</code> is about the most manual(?) mechanism I know of, so you're starting from a mild disadvantage and thus need all the practice you can get.</p>
