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From Bing Li <lbl...@gmail.com>
Subject Re: The Common Account for Hadoop
Date Mon, 06 Feb 2012 11:23:18 GMT
Hi, Alex,

Thanks so much for your help!

I noticed that I didn't put the RSA key to the account's home directory.

Best regards,
Bing

On Mon, Feb 6, 2012 at 6:19 PM, alo alt <wget.null@googlemail.com> wrote:

> check the rights of .ssh/authorized_keys on the hosts, have to be only
> read- and writable for the user (including directory)
> Be sure you copied the right key without line-breaks and fragments.  If
> you have a lot of boxes you could use BCFG2:
> http://docs.bcfg2.org/
>
> - Alex
>
>
>
> --
> Alexander Lorenz
> http://mapredit.blogspot.com
>
> On Feb 6, 2012, at 10:55 AM, Bing Li wrote:
>
> > Dear all,
> >
> > I am just starting to learn Hadoop. According to the book, Hadoop in
> > Action, a common account for each server (masters/slaves) must be
> created.
> >
> > Moreover, I need to create a public/private rsa key pair as follows.
> >
> >    ssh-keygen -t rsa
> >
> > Then, id_rsa and id_rsa.pub are put under $HOME/.ssh.
> >
> > After that, the public key is distributed to other nodes and saved in
> > @HOME/.ssh/authorized_keys.
> >
> > According to the book (Page 27), I can login in a remote target with the
> > following command.
> >
> >    ssh target (I typed IP address here)
> >
> > However, according to the book, no password is required to sign in the
> > target. On my machine, it is required to type password each time.
> >
> > Any affects for my future to configure Hadoop? What's wrong with my work?
> >
> > Thanks so much!
> > Bing
>
>

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