nodetool removenode

Provides the status of current node removal, forces completion of pending removal, or removes the identified node.

Provides the status of current node removal, forces completion of pending removal, or removes the identified node.

Warning: This command triggers cluster streaming. In large environments, the additional streaming activity causes more pending gossip tasks in the output of nodetool tpstats. Nodes can start to appear offline and may need to be restarted to clear up the back log of pending gossip tasks.

Synopsis

nodetool <options> removenode -- <status> | <force> | <ID>
Cassandra tarball installations: 
installation_location/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.
status Status of current node removal.
force Forces completion of the pending removal.
ID Host ID, in UUID format.
-- Separates an option from an argument that could be mistaken for a option.

Description

This command removes a node, shows the status of a removal operation, or forces the completion of a pending removal. When the node is down and nodetool decommission cannot be used, use nodetool removenode. Run this command only on nodes that are down. If the cluster does not use vnodes, before running the nodetool removenode command, adjust the tokens.

Examples

Determine the UUID of the node to remove by running nodetool status. Use the UUID of the node that is down to remove the node.

nodetool status
Datacenter: DC1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address        Load       Tokens  Owns (effective)  Host ID                               Rack
UN  192.168.2.101  112.82 KB  256     31.7%             420129fc-0d84-42b0-be41-ef7dd3a8ad06  RAC1
DN  192.168.2.103  91.11 KB   256     33.9%             d0844a21-3698-4883-ab66-9e2fd5150edd  RAC1
UN  192.168.2.102  124.42 KB  256     32.6%             8d5ed9f4-7764-4dbd-bad8-43fddce94b7c  RAC1
odetool removenode d0844a21-3698-4883-ab66-9e2fd5150edd
View the status of the operation to remove the node:
nodetool removenode status
RemovalStatus: No token removals in process.

Confirm that the node has been removed.

nodetool status
Datacenter: DC1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address        Load       Tokens  Owns (effective)  Host ID                               Rack
UN  192.168.2.101  112.82 KB  256     37.7%             420129fc-0d84-42b0-be41-ef7dd3a8ad06  RAC1
UN  192.168.2.102  124.42 KB  256     38.3%             8d5ed9f4-7764-4dbd-bad8-43fddce94b7c  RAC1