Replacing a running node

Steps to replace a node with a new node, such as when updating to newer hardware or performing proactive maintenance.

Only add new nodes to the cluster. A new node is a system in which DataStax Enterprise (DSE) 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:

Adding a node and then decommissioning the old node

Two methods for replacing a node with a new node, such as when updating to newer hardware or performing proactive maintenance.

Replacing a running node

Replace a node that is currently running without streaming the data twice.

Was this helpful?

Give Feedback

How can we improve the documentation?

© 2024 DataStax | Privacy policy | Terms of use

Apache, Apache Cassandra, Cassandra, Apache Tomcat, Tomcat, Apache Lucene, Apache Solr, Apache Hadoop, Hadoop, Apache Pulsar, Pulsar, Apache Spark, Spark, Apache TinkerPop, TinkerPop, Apache Kafka and Kafka are either registered trademarks or trademarks of the Apache Software Foundation or its subsidiaries in Canada, the United States and/or other countries. Kubernetes is the registered trademark of the Linux Foundation.

General Inquiries: +1 (650) 389-6000, info@datastax.com