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From Ahmed Ossama <ah...@aossama.com>
Subject Re: Hadoop 2.6.0 Multi Node Setup
Date Tue, 27 Jan 2015 18:58:33 GMT
Hi Telles,

No, the documentation isn't out of date. Normally hadoop configuration 
files are placed under /etc/hadoop/conf, it then referenced to when 
starting the cluster with --config $HADOOP_CONF_DIR, this is how hdfs 
and yarn know their configuration.

Second, it's not a good practice to run hadoop with root. What you want 
to do is something like this

    # useradd hdfs
    # useradd yarn
    # groupadd hadoop
    # usermod -a -Ghadoop hdfs
    # usermod -a -Ghadoop yarn
    # mkdir /hdfs/{nn,dn}
    # chown -R hdfs:hadoop /hdfs

Then start your hdfs daemon with hdfs user, and yarn daemon with yarn user.

On 01/27/2015 08:40 PM, Telles Nobrega wrote:
> Hi, I'm starting to deply Hadoop 2.6.0 multi node.
> My first question is:
> In the documenation page, it says that the configuration files are 
> under conf/ but I found them in etc/. Should I move them to conf or is 
> this just out of date information?
> My second question is regarding users permission, I tried installing 
> before but I was only able to start deamons running as root, is that 
> how it should be?
> For now these are all the question I have.
> Thanks

Ahmed Ossama

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