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From "Jones, Nick" <nick.jo...@amd.com>
Subject Re: hadoop ssh
Date Sat, 08 May 2010 11:15:53 GMT
Hi Dennis,
Hadoop doesn't actually depend on ssh for operation. Having the pre-shared keys in place just
helps when using the startup/shutdown scripts (or other system maintenance).

I'm not sure about the firewall. 

Sent by radiation.

----- Original Message -----
From: Dennis <arsenepark@yahoo.com.cn>
To: common-user@hadoop.apache.org <common-user@hadoop.apache.org>
Sent: Sat May 08 06:09:03 2010
Subject: hadoop ssh

Hi, all
1. Do the datanodes have to be able to ssh namenode without password?2. Does the default Debian
Lenny 5.0 has a default firewall which would interfere the ssh between namenode and datanode?


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