SSH Instead of RSH
 

My cluster was running rsh on Linux Redhat 7.3 up to CFX-5.7, Now I have to run Ansy CFX10, Which will be on Suse 9.3, how can I switch the rsh to ssh ?

Re: SSH Instead of RSH
 

It is not good idea, because ssh uses encryption which slow down cluster run. Furthermore rsh still present in SuSE9.3

Re: SSH Instead of RSH
 

Hi Mikhail,


Could you expand on this please? Where did you see such information?

However, if security is not an issue, RSH is the right choice.

S.W.

Re: SSH Instead of RSH
 

Use the following environemnt variable in all your nodes (bash syntax): export CFX5RSH=ssh

You'll should also want the ssh connections passwordless but this will require you extra steps. Otherwise it'll be annoying to type the password every time you launch a solver in each node.

Although not present by default in the 9.3 installation you can use the rsh rpm from the SuSE 8.2 version (if you still find it somewhere).

Good luck, S. W.

Re: SSH Instead of RSH
 

"OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other network-level attacks. Additionally, OpenSSH provides a myriad of secure tunneling capabilities, as well as a variety of authentication methods." www.openssh.org

Re: SSH Instead of RSH
 

RSH client: ftp://ftp.suse.com/pub/suse/i386/9.3...7-556.i586.rpm RSH server: ftp://ftp.suse.com/pub/suse/i386/9.3...7-556.i586.rpm

RPM's should present in CD distribution