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 in which the DataStax Distribution of Apache Cassandra™ (DDAC) 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: