nodetool drain

Drains the node.

Drains the node.

Synopsis

nodetool <options> drain
Tarball and Installer No-Services path:
installation_location/resources/cassandra/bin
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.
-- Separates an option from an argument that could be mistaken for a option.

Description

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.