Replacing a running node
Two methods for replacing a node with a new node, such as when updating to newer hardware or performing proactive maintenance.
Steps to replace a node with a new node, such as when updating to newer hardware or performing proactive maintenance.
Warning: Only add new nodes to the cluster. A new
node is a system that DataStax Enterprise has never started. The node must have
absolutely NO PREVIOUS DATA in the data directory, saved_caches, commitlog, and
hints. Adding nodes previously used for testing or that have been removed from
another cluster, merges the older data into the cluster and may cause data loss
or corruption.
You can replace a running node in two ways: