DSE Multi-Instance commands

Where is the cassandra.yaml file?

The location of the cassandra.yaml file depends on the type of installation:

Installation Type Location

Installation Type	Location
Package installations + Installer-Services installations	`/etc/dse/cassandra/cassandra.yaml`
Tarball installations + Installer-No Services installations	`<installation_location>/resources/cassandra/conf/cassandra.yaml`

Package installations + Installer-Services installations

/etc/dse/cassandra/cassandra.yaml

Tarball installations + Installer-No Services installations

<installation_location>/resources/cassandra/conf/cassandra.yaml

Commands to configure and use multiple DataStax Enterprise nodes on a single host machine.

DSE Multi-Instance commands are supported only on package installations.

sudo dse dse-nodeId subcommand [command_arguments]

sudo dsetool dse-nodeId command [command_arguments]

For example:

To run the dsetool ring command on a node named dse-node1 in a cluster on a DSE Multi-Instance host machine:
```
sudo dse dse-node1 dsetool ring
```
To run the dsetool ring command without DSE Multi-Instance:
```
sudo dsetool ring
```
dse nodeID [command_arguments]
dse add-node
dse list-nodes
dse remove-node

`dse add-node`

sudo dse add-node [command_arguments]

To show the command line help for any command:

sudo dse add-node --help

The following table describes the command arguments for the dse add-node command. When optional parameters are absent, the default value remains unchanged. With DSE Multi-Instance, the dse add-node command arguments define some properties that are otherwise set in the cassandra.yaml file.

Where is the cassandra.yaml file?

The location of the cassandra.yaml file depends on the type of installation:

Installation Type Location

Installation Type	Location
Package installations + Installer-Services installations	`/etc/dse/cassandra/cassandra.yaml`
Tarball installations + Installer-No Services installations	`<installation_location>/resources/cassandra/conf/cassandra.yaml`

Package installations + Installer-Services installations

/etc/dse/cassandra/cassandra.yaml

Tarball installations + Installer-No Services installations

<installation_location>/resources/cassandra/conf/cassandra.yaml

When an optional parameter is omitted, the default value is not changed.

`dse add-node` command arguments
Command arguments	Description
`nodeId`	Adds the specified node to an existing DataStax Enterprise cluster, where the specified `nodeID` is the node name. The specified node name is automatically prepended with `dse-` so that the resulting node ID is `dse-nodeId`. For example, if you specify `node1`, the resulting node name is `dse-node1`.
`[--cluster=clustername]`	The name of the DataStax Enterprise cluster that the node belongs to. Only non-whitespace values are supported.
`[--jmxport=jmx_port]`	The JMX port for the node.
`[--listen-address=IP_address]`	The IP address or hostname that Cassandra binds to when connecting to other nodes.
`[--rpc-address=IP_address]`	The IP address or hostname that Cassandra binds to for RPC requests.
`[--cpus=number]`	The number of Cassandra cores.
`[--max-heap-size=size]`	Set the Java heap size. The size must be specified in megabytes. If you omit `MB` the size is interpreted as megabytes. These commands are equivalent: [source,bash] ---- dse add-node -n node1 --max-heap-size=800 ---- [source,bash] ---- dse add-node -n node1 --max-heap-size=800MB ----
`[--data-directory=directory]`	The root directory for storing data on each node. Default: `/var/lib/dse-nodeId/data`
`[--hints-directory=directory]`	The hints directory for each node. Default: `/var/lib/dse-nodeId/hints`
`[--commit-directory=directory]`	The commit log directory for each node. Default: `/var/lib/dse-nodeId/commitlog`
`[--cdc-directory=directory]`	The CDC raw data directory for the node. Default: `/var/lib/NODEID/cdc_raw`
`[--saved-caches-directory=directory]`	The saved caches directory for each node. Default: `/var/lib/dse-nodeId/saved_caches`
`[--logs-directory=directory]`	The root directory for all of the logs for each node. Default: `/var/log/dse-nodeId`
`[--tomcat-logs=directory]`	The log directory for tomcat logs. Default: `logs-directory/tomcat` where `logs-directory` is defined with `--logs-directory`.
`[--hadoop-logs=directory]`	The log directory for Hadoop logs. Default: `logs-directory/hadoop`
`[--hive-logs=directory]`	The log directory for Hive logs. Default: `logs-directory/hive`
`[--pig-logs=directory]`	The log directory for Pig logs. Default: `logs-directory/pig`
`[--mahout-logs=directory]`	The log directory for Mahout logs. Default: `logs-directory/mahout`
`[--spark-worker-directory=directory]`	The data directory for Spark Worker for the node. Default: `/var/lib/dse-nodeId/spark/worker`
`[--spark-worker-cores=directory]`	The maximum number of cores used by Spark executors.
`[--spark-worker-memory=directory]`	The maximum amount of memory used by Spark executors. Specify unit of measure with k (kilobytes), m (megabytes), g (gigabytes).
`[--spark-local-directory=directory]`	The local directory for Spark Worker for each node. Default: `/var/lib/dse-nodeId/spark/rdd`
`[--spark-log-directory=directory]`	The log directory for Spark Worker for the node. Default: `/var/log/dse-nodeId/spark/worker`
`[--unix-username=name]`	The UNIX user that owns the node configuration. Default: `cassandra`.
`[--unix-group=group]`	The UNIX group that owns the node configuration. Default: `cassandra`.
`[--tomcat-logs=directory]`	The log directory for Tomcat server logs. Default: `logs-directory/tomcat`
`[--rack=rack_placement --dc=datacenter_placement]`	`rack_placement` is the rack placement for the node. `datacenter_placement` is the datacenter placement for the node.
`[--seeds=IP_address1,IP_address2,…]`	A comma-separated list of IP addresses of the nodes to be used as seed nodes.
`[--search]`	Enable DSE Search on the new node.
`[--analytics]`	Enable DSE Analytics (Spark) on the new node.
`[--graph]`	Enable DSE Graph on the new node.
`[--cfs]`	Enable CFS without Spark on the new node.
`[--num-tokens=num]`	The number of tokens on the new node. Specify a number.
`[--dsefs]`	Enable DSEFS on the new node.
`--help`	Send command descriptions to standard output.

`dse list-nodes`

sudo dse list-nodes

This command takes no arguments and lists the nodes that are configured for the DSE Multi-Instance host machine.

Since the default DataStax Enterprise node is called dse, the dse list-nodes command always returns at least the dse node, even if nodes were not added with the dse add-node command.

`dse remove-node`

Synopsis

sudo dse remove-node nodeId [--yes]

To show the command line help for any command:

sudo dse remove-node --help

The following table describes the command arguments for the dse remove-node command.

Command arguments Description

Command arguments	Description
`nodeId`	Required. Removes the specified node to an existing DataStax Enterprise cluster, where the specified `nodeID` is the node name. Because the node name is always prepended with `dse-` the command works if you specify `dse-nodeID` or just `nodeID`.
`[--yes]`	Confirm node deletion. Files are deleted and are not recoverable. If you do not specify `--yes` on the command line, you are prompted to confirm node deletion.
`--help`	Send command descriptions to standard output.

nodeId

Required. Removes the specified node to an existing DataStax Enterprise cluster, where the specified nodeID is the node name. Because the node name is always prepended with dse- the command works if you specify dse-nodeID or just nodeID.

[--yes]

Confirm node deletion. Files are deleted and are not recoverable. If you do not specify --yes on the command line, you are prompted to confirm node deletion.

--help

Send command descriptions to standard output.

DSE Multi-Instance commands

`dse add-node`

`dse list-nodes`

`dse remove-node`

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