nodetool drain

Drains the node.

Drains the node.


nodetool <options> drain
Tarball and Installer No-Services path:
Table 1. Options
Short Long Description
-h --host Hostname or IP address.
-p --port Port number.
-pwf --password-file Password file path.
-pw --password Password.
-u --username Remote JMX agent username.


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.