Ronald Bradford
MySQL Expert

MySQL Expert Ronald Bradford shares valuable input in MySQL Performance Tuning, MySQL Scalability and general MySQL Help from his two decades of working with MySQL, Oracle, Ingres and development technologies.

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Configuring a Cassandra Cluster

Continuing on from Getting started with Cassandra I’m now trying to configure two servers as a cluster. The Getting Started Step 3 was not clear the first time I read it (after writing this is makes sense), so a Google search yielded the second link as Building a Small Cassandra Cluster for Testing and Development. I love finding reference material from people I know, Padraig being a significant contributor to Drizzle.

Here is what I did to create a running Cassandra Cluster.

  • Stop individual Cassandra instances
  • Re-created data and log directories (I did this just to ensure a clean slate)
  • I added to my local hosts file two aliases for my servers (cass01 and cass02). This helped in the following step.
  • Three changes are needed to the default conf/storage-conf.xml file on my first server.
    • Change <ListenAddress> from localhost to cass01
    • Change <ThristAddress> from localhost to cass01
    • Change <Seed> from 127.0.0.1 to cass01
  • On my second server I changed the <ListenAddress> and <ThriftAddress> accordingly to cass02 and made <Seed> cass01
  • Started Cassandra servers and tested successfully using the set …/get Keyspace1.Standard1['jsmith'] example. I was able to connect to both hosts via cassandra-cli and see the results created on just one node. I was able to create data on the second node and view on the first node.

A new command is available to describe your cluster.

$ bin/nodeprobe -host cass01 ring
Address       Status     Load          Range                                      Ring
                                       148029780173059661585165369000220362256
192.168.100.4 Up         0 bytes       59303445267720348277007645348152900920     |<--|
192.168.100.5 Up         0 bytes       148029780173059661585165369000220362256    |-->|

Now with my first introduction successful, time to start using and seeing the true power of using Cassandra.

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This entry was posted on Wednesday, February 24th, 2010 at 11:22 pm and is filed under Cassandra, Data Stores, Professional. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

3 Responses to “Configuring a Cassandra Cluster”

  1. A Cassandra twitter clone | MySQL Expert | MySQL Performance | MySQL Scalability says:
    February 25, 2010 at 12:59 am

    [...] MySQL Expert Ronald Bradford shares valuable input in MySQL Performance Tuning, MySQL Scalability and general MySQL Help from his two decades of working with MySQL, Oracle, Ingres and development technologies. « Configuring a Cassandra Cluster [...]

  2. Getting started with Cassandra | MySQL Expert | MySQL Performance | MySQL Scalability says:
    February 26, 2010 at 4:35 pm

    [...] Configuring a Cassandra Cluster [...]

  3. Mark Jones says:
    March 19, 2010 at 8:53 am

    I think you meant <ThriftAddress>

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