title: How to update configuration of a Cassandra cluster
body: <p>I have a 3 node Cassandra cluster and I want to make some adjustments to the cassandra.yaml</p>
  
  <p>My question is, how should I perform this? One node at a time or is there a way to make it happen without shutting down nodes?</p>
  
  <p>Btw, I am using Cassandra 2.2 and this is a production cluster.</p>