Install prepacked CDH4 » History » Revision 2
Revision 1 (Henning Blohm, 20.09.2012 14:23) → Revision 2/20 (Henning Blohm, 20.09.2012 14:36)
h2. Install CDH4 from a preconfigured repository This site provides a pre-configured one-ckeck out user space installation of Cloudera's CDH4 Hadoop and HBase distributions. This page explains how to install it on your machine - which is really, really simple compared to normally suggested Hadoop installation procedures. *Note #1:* This will only work on Linux or Mac OS *Note #2:* The repository also contains an Eclipse project file and has Eclipse launchers for most functions required. In short there are two steps: # Clone the repository # Adapt your local environment h3. Clone the repository The pre-configured distribution is stored in the repository "z2-samples-cdh4-base":http://redmine.z2-environment.net/projects/z2-samples/repository/z2-samples-cdh4-base. We assume you install everything (including an Eclipse workspace - if you run the samples) in *install*. <pre><code> cd install git clone -b http://git.z2-environment.net/z2-samples.cdh4-base </code></pre> h3. Adapt your environment Before you can run anything really there are two customizations needed: h4. Set important environment variables There is a shell script "env.sh":http://redmine.z2-environment.net/projects/z2-samples/repository/z2-samples-cdh4-base/revisions/master/entry/env.sh that you should open and change as described. At the time of this writing it is required that you define your JAVA_HOME (please do, even if set elsewhere already) and the NOSQL_HOME, which is the absolute path to the folder that has the *env.sh* file. This script is called from many places. h4. Enable password-less SSH Currently this is still required to have the start / stop scripts running. This requirement may be dropped in the future. If you have not created a unique key for SSH or have no idea what that is, run <pre><code> ssh-keygen </code></pre> (just keep hitting enter). Next copy that key over to the machine you want to log on to without password, i.e. localhost in this case: <pre><code> ssh-copy-id <your user name>@localhost </code></pre> If this fails because your SSH works differently, or ssh will refuse to log on without password please "ask the internet". Sorry. All that matters is that in the end <pre><code> ssh <your user name>@localhost </code></pre> (substituting <your user name> with your actual user name of course) works without asking for a password.