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. Nick Sent by radiation. ----- Original Message ----- From: Dennis <[email protected]> To: [email protected] <[email protected]> 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? Thanks.Dennis
