nodetool enablehintsfordc
Enable hints for a datacenter.
cassandra.yaml
- The cassandra.yaml file is located in the installation_location/conf directory.
cassandra-env.sh
- The cassandra-env.sh file is located in the installation_location/conf directory.
Enable hints for a datacenter.
Synopsis
install_location/bin/nodetool [options] enablehintsfordc [--] <datacenter>
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. |
datacenter | The datacenter to enable. | |
-- |
Separates an option from an argument that could be mistaken for a option. |
Note:
- 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 enablehintsfordc
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.- [--] can be used to separate command-line options from the list of arguments, when the list might be mistaken for options.
Description
The nodetool enablehintsfordc
command is used to turn on hints for a
datacenter. The cassandra.yaml file has a parameter, hinted_handoff_disabled_datacenters that will blacklist datacenters on startup. If
a datacenter can be enabled later with nodetool enablehintsfordc
.
Examples
$ nodetool -u username -pw password enablehintsfordc DC2