Creating a new cluster or adding a node to a cluster is called provisioning. You need to:
Create a new node by installing a new Couchbase Server.
Configure disk path for the node.
Optionally configure memory quota for each node within the cluster. Any nodes you add to a cluster will inherit the configured memory quota. The default memory quota for the first node in a cluster is 60% of the physical RAM.
Add the node to your existing cluster.
Whether you are adding a node to an existing cluster or starting a new cluster, the node's disk path must be configured. Your next steps depends on whether you create a new cluster or you want to add a node to an existing cluster. If you create a new cluster you will need to secure it by providing an administrative username and password. If you add a node to an existing cluster you will need the URI and credentials to use the REST API with that cluster.