This is the documentation for CDH 5.1.x. Documentation for other versions is available at Cloudera Documentation.

Defining a Whirr Cluster

Note:

For information on finding your cloud credentials, see the Whirr FAQ.

After generating an SSH key pair, the only task left to do before using Whirr is to define a cluster by creating a properties file. You can name the properties file whatever you like. The example properties file used in these instructions is named hadoop.properties. Save the properties file in your home directory. After defining a cluster in the properties file, you will be ready to launch a cluster and run MapReduce jobs.

Important:

The properties shown below are sufficient to get a bare-bones cluster up and running, but you will probably need to do more configuration to do real-life tasks, especially if you are using HBase and ZooKeeper. You can find more comprehensive template files in the recipes directory, for example recipes/hbase-cdh.properties.

MRv1 Cluster

The following file defines a cluster with a single machine for the NameNode and JobTracker, and another machine for a DataNode and TaskTracker.

whirr.cluster-name=myhadoopcluster
whirr.instance-templates=1 hadoop-jobtracker+hadoop-namenode,1 hadoop-datanode+hadoop-tasktracker
whirr.provider=aws-ec2
whirr.identity=<cloud-provider-identity>
whirr.credential=<cloud-provider-credential>
whirr.private-key-file=${sys:user.home}/.ssh/id_rsa
whirr.public-key-file=${sys:user.home}/.ssh/id_rsa.pub
whirr.env.repo=cdh5
whirr.hadoop-install-function=install_cdh_hadoop
whirr.hadoop-configure-function=configure_cdh_hadoop
whirr.hardware-id=m1.large
whirr.image-id=us-east-1/ami-ccb35ea5
whirr.location-id=us-east-1

YARN Cluster

The following configuration provides the essentials for a YARN cluster. Change the number of instances for hadoop-datanode+yarn-nodemanager from 2 to a larger number if you need to.

whirr.cluster-name=myhadoopcluster
whirr.instance-templates=1 hadoop-namenode+yarn-resourcemanager+mapreduce-historyserver,2 hadoop-datanode+yarn-nodemanager
whirr.provider=aws-ec2
whirr.identity=<cloud-provider-identity>
whirr.credential=<cloud-provider-credential>
whirr.private-key-file=${sys:user.home}/.ssh/id_rsa
whirr.public-key-file=${sys:user.home}/.ssh/id_rsa.pub
whirr.env.mapreduce_version=2
whirr.env.repo=cdh5
whirr.hadoop.install-function=install_cdh_hadoop
whirr.hadoop.configure-function=configure_cdh_hadoop
whirr.mr_jobhistory.start-function=start_cdh_mr_jobhistory
whirr.yarn.configure-function=configure_cdh_yarn
whirr.yarn.start-function=start_cdh_yarn
whirr.hardware-id=m1.large
whirr.image-id=us-east-1/ami-ccb35ea5
whirr.location-id=us-east-1

Page generated September 3, 2015.