nodetool drain

Drains the node.


nodetool <options> drain

Tarball and Installer No-Services path:

Connection options
Short Long Description



Hostname or IP address.



Port number.



Password file path.






Remote JMX agent username.


Separates an option from an argument that could be mistaken for an option.


Flushes all memtables from the node to SSTables on disk. DataStax Enterprise (DSE) stops listening for connections from the client and other nodes. You need to restart DSE after running nodetool drain. You typically use this command before upgrading a node to a new version of DSE. To simply flush memtables to disk, use nodetool flush.

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