nodetool assassinate

Forcefully removes a dead node without re-replicating any data. It is a last resort tool if you cannot successfully use nodetool removenode.

Forcefully removes a dead node without re-replicating any data. It is a last resort tool if you cannot successfully use nodetool removenode.

Synopsis

nodetool [options] assassinate <ip_address>
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.
ip_address IP address of the endpoint to assassinate.
-- Separates an option from an argument that could be mistaken for a option.
Note:
  • For tarball installations, execute the command from the install_location/bin directory.
  • If a username and password for RMI authentication are set explicitly in the cassandra-env.sh file for the host, then you must specify credentials.
  • nodetool assassinate operates on a single node in the cluster if -h is not used to identify one or more other nodes. If the node from which you issue the command is the intended target, you do not need the -h option to identify the target; otherwise, for remote invocation, identify the target node, or nodes, using -h.

Description

The nodetool assassinate command is a tool of last resort. Only use this tool to remove a node from a cluster when removenode is not successful.

Examples

nodetool -u cassandra -pw cassandra assassinate 192.168.100.2
The location of the cassandra-env.sh file depends on the type of installation:
Cassandra package installations /etc/cassandra/cassandra-env.sh
Cassandra tarball installations install_location/conf/cassandra-env.sh