About the nodetool utility
A command line interface for managing a cluster.
The nodetool utility is a command line interface for managing a cluster.
Command formats
nodetool [options] command [args]
| 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. |
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.
- The repair and rebuild commands can affect multiple nodes in the cluster.
- Most nodetool commands operate 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.
Example
nodetool -u cassandra -pw cassandra describering demo_keyspace
The location of the
cassandra-env.sh file depends on the type of installation:
| Package installations | /etc/cassandra/cassandra-env.sh |
| Tarball installations | install_location/conf/cassandra-env.sh |
Getting nodetool help
nodetool help- Provides a listing of nodetool commands.
nodetool help command name- Provides help on a specific command. For example:
nodetool help upgradesstables
For more information, see nodetool help