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From "Kartashov, Andy" <Andy.Kartas...@mpac.ca>
Subject RE: ERROR:: SSH failour for distributed node hadoop cluster
Date Thu, 25 Oct 2012 16:37:36 GMT
Yogesh,

One need to understand how passwordless ssh work.

Say there is a user “yosh”
He types ssh localhost and is prompted for a password. This is how to resolve this.

1.
Type : ssh-keygen -t rsa

-t stand for type and rsa (encryption)  - another type will be dsa.

Well, after you run above command,  a pair of private and public keys is generated and stored
in your /home/yosh/.ssh folder.

“cd” in there and you will see two files. Id_rsa (private key) and id_rsa_pub (public
key).

If you create a file called “authorized_keys” and place your public key in there you will
achieve psswdless access. How to do it?

2.
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

The above command reads your PubKey and appends to the file. After that try “ssh localhost”
again. Voila! No more password request.

Now, imagine you are ssh-ing into this very same machine from another computer where u  log-in
as yosh. “ssh < ip>”.  The machine will similarly let you in without password.

p.s. If you do not know ip address of that machine, find out by simply typing “hostname
–i”.

Happy hadoop’ing.

AK47


From: yogesh dhari [mailto:yogeshdhari@live.com]
Sent: Thursday, October 25, 2012 12:12 PM
To: hadoop helpforoum
Subject: RE: ERROR:: SSH failour for distributed node hadoop cluster


Hi Andy,

I am still at that point, not able to solve it yet

Please help, Same issue with all settings and commands I have raise by Subject
ERROR: : Hadoop Installation in distributed mode.‏
to the mailing llist.


Thanks & Regards
Yogesh Kumar

________________________________
From: Andy.Kartashov@mpac.ca
To: user@hadoop.apache.org
Subject: RE: ERROR:: SSH failour for distributed node hadoop cluster
Date: Thu, 25 Oct 2012 16:01:56 +0000
Yogesh,

Have you figured it out?  I had the same issue (needed passwordless ssh) and managed. Let
me know if you are still stuck.

AK47

From: yogesh.kumar13@wipro.com [mailto:yogesh.kumar13@wipro.com]
Sent: Thursday, October 25, 2012 4:28 AM
To: user@hadoop.apache.org
Subject: ERROR:: SSH failour for distributed node hadoop cluster
Importance: High

Hi all,

I am trying to run the command

ssh Master

it runs and shows after entering password.
Password: abc
Last login: Thu Oct 25 13:51:06 2012 from master

But ssh for Slave through error.



ssh Slave

it asks for password ans denie

Password: abc
Password: abc
Password: abc
Permission denied (publickey,keyboard-interactive).

Please suggest.
Thanks & regards
Yogesh Kumar
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