Create Cluster Prerequisites Include

Make sure that all the :ref:ports <cqlsh-networking> are open.

Obtain the IP addresses of all nodes that have been created for the cluster.

Choose one of the nodes to be a seed node. You'll need to provide the IP of that node using the seeds parameter in the scylla.yaml configuration file on each node.

Select a unique name as cluster_name for the cluster (identical for all the nodes in the cluster).

Choose which :ref:snitch <faq-snitch-strategy> to use (identical for all the nodes in the cluster). For a production system, it is recommended to use a DC-aware snitch, which can support the NetworkTopologyStrategy :ref:replication strategy <create-keyspace-statement> for your keyspaces.