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I have a Datastax Enterprise cluster in production with the following configuration:

3 Hadoop Nodes 2 Cassandra Nodes 2 Solr Nodes

  • There are few tables in Cassandra with few million lines.
  • Every night I process few million registers using PIG.
  • All the search done in our website uses SOLR.

Basically we are 100% based on DSE.

This structure is based on Amazon Ec2, and all the instances are: M3.Xlarge 80 GB SSD 15 GB RAM 13 (4 core x 3.25 unit)

I want to add an extra 1TB Hard Disk for each node and use it in the cluster. How can I do that? Which config files do I need to change when I attach a new hard disk?

BrianC
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Bruno César
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1 Answers1

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After attaching the new hard drive storage to the EC2 instance, edit the cassandra.yaml file and add the new storage location to the data_file_directories configuration option. (Cassandra supports multiple entries for data storage, and will spread the data out.)

The config file will depend on your installation method, either /etc/dse/cassandra/cassandra.yaml or {install_location}/resources/cassandra/conf/cassandra.yaml.

After making the config file change, DSE will need to be restarted on each node (could do a rolling restart).

Reference: https://stackoverflow.com/a/23121664/9965

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BrianC
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