DataStax's Amazon Machine Image is the quickest way to get a DataStax Community or DataStax Enterprise cluster up and running on EC2.
cassandralauncher as found and documented here:
This will ensure all options are processed correctly and easily.
Basic AMI Switches:
--clustername <name> The name of the Cassandra cluster REQUIRED --totalnodes <#> Cluster size REQUIRED --version [ community | enterprise ] Installs either DataStax Enterprise or DataStax Community Edition REQUIRED --rpcbinding Binds the rpc_address to the private IP address of the instance Default: false, uses 0.0.0.0
DataStax Enterprise Specific:
--username <user> The username provided during DSE registration --password is REQUIRED in order to use this option REQUIRED for a DSE installation --password <pass> The password provided during DSE registration --username is REQUIRED in order to use this option REQUIRED for a DSE installation --analyticsnodes <#> Number of analytics nodes that run with Spark Note: Uses Hadoop in versions earlier than DSE 4.5 Default: 0 --searchnodes <#> Number of search nodes that run with Solr Default: 0 --hadoop Force Hadoop over Spark on analytics nodes Default: false, uses Spark on 4.5+
--release <release_version> Allows for the installation of a previous DSE version Example: 1.0.2 Default: Ignored --cfsreplicationfactor <#> The CFS replication factor Note: --cfsreplicationfactor must be <= --analyticsnodes Default: 1 --opscenter no Disables the installation of OpsCenter on the cluster Default: yes --reflector <url> Allows you to use your own reflector Default: http://reflector2.datastax.com/reflector2.php
Visit http://www.datastax.com/ami for full installation instructions.
To stop the service, simply run
sudo service <cassandra | dse> stop
To start the service again, simply run
sudo service <cassandra | dse> start
See FILES.txt for a description of how the scripts here configure the AMI.
- Backup all the data on all your nodes using the snapshot utility. This provides you with the easiest way to revert any unwanted changes or incompatibilities that may arise. See the DataStax documentation for more information.
- On each of your Cassandra nodes, run
sudo apt-get install [ cassandra | apache-cassandra1 | dse-full ], depending on which version you were currently on and want to upgrade to.
cassandraupgrades to the latest in 0.8.x release.
apache-cassandraupgrades to the latest in the 1.0.x release.
dse-fullupgrades to the latest DataStax Enterprise release.
- If you are trying to upgrade across major versions, make sure to read NEWS.txt on the newer packages and consult DataStax documentation for full details for upgrading packaged releases. Typically a new repository must be added followed by a
sudo apt-get update.
- Account for New and Changed Parameters in cassandra.yaml. If the default Cassandra configuration file has changed, you will find backups of it in the conf directory. You can use that to compare the two configurations and make appropriate changes.
- Make sure any client drivers – such as Hector or Pycassa clients – are compatible with your current version.
- Run nodetool drain to flush the commit log and then restart each Cassandra node, one at a time, monitoring the log files for any issues.
- After upgrading and restarting all Cassandra nodes, restart client applications.
- [Upgrading from 0.8 to 1.0] After upgrading, run nodetool scrub against each node before running repair, moving nodes, or adding new ones.
Feel free to fork off this project and offer any suggestions that you find along the way.
Also, if you're interested in the whole process: read up on the saving process here: http://www.datastax.com/dev/blog/personalizing-your-own-brisk-ami