Docker Cassandra Nodetool

Base docker image to run the Cassandra Nodetool utility. It uses phusion's base docker image.

Aside from the original functionality, this image has the ability to run on Rancher.

Building the image

Clone the repository

    git clone https://github.com/pitrho/docker-cassandra-nodetool.git
    cd docker-cassandra-nodetool
    ./build.sh

De default tag for the new image is pitrho/cassadra-nodetool. If you want to specify a different tag, pass the -t flag along with the tag name:

./build.sh -t new/tag

Be default, the image installs version 2.2.3. If you want to install a different version, pass the -v flag along with the version name:

./build.sh -v 3.0.0

Environment Variables

The following environment variables can be used to adjust which nodetool command to run and which options to pass.

CASSANDRA_HOSTS

This variable is for specifying the set of nodes (comma-separated) for which to run the nodetool command against.

CASSANDRA_RANCHER_SERVICES

If running on Rancher, you can specify a comma-separated list of services that correspond to the Cassandra nodes. Then, that list is used to populate the CASSANDRA_HOSTS varaible above.

###CASSANDRA_JMX_PORT This variable is used for specify the JMX port to connect to Cassandra. It defaults to 7199.

###CASSANDRA_JMX_USERNAME This variable is used to specify the JMX user to connect to Cassandra. It defaults to cassandra.

###CASSANDRA_JMX_PASSWORD This variable is used to specify the JMX password to connect to Cassandra. It defaults to cassandra.

###CASSANDRA_USE_JMX_SSL This variable is used to specify that the nodetool must use SSL when connecting to JMX. It defaults to false.

###CASSANDRA_KEYSTORE_PATH If CASSANDRA_USE_JMX_SSL is set to true, then this variable is used to specify the keystore to use when connecting to JMX.

###CASSANDRA_KEYSTORE_PASSWORD If CASSANDRA_USE_JMX_SSL is set to true, then this variable is used to specify the keystore password to use when connecting to JMX.

###CASSANDRA_TRUSTSTORE_PATH If CASSANDRA_USE_JMX_SSL is set to true, then this variable is used to specify the truststore to use when connecting to JMX.

###CASSANDRA_TRUSTSTORE_PASSWORD If CASSANDRA_USE_JMX_SSL is set to true, then this variable is used to specify the truststore password to use when connecting to JMX.

###CRON_SCHEDULE This variable is used to specify the cron schedule to run the nodetool command (i.e 0 6 0 0 0 could be used to run the command everyday at 6 AM)

###NODETOOL_COMMAND This variable is used to specify the command to run through nodetool (ie. repair)

###NODETOOL_COMMAND_OPTIONS This variable is used to specify any options to pass to the command above.

License

See the license file.

Contributors

• Alejadnro Mesa