Intel® Parallel Studio XE 2019 Update 4 Installation Guide for Linux* OS
4
clusternode3
clusternode4
clusternode5
clusternode6
clusternode7
clusternode8
A line of text in the example above is considered a comment line if the first column contains the “#”
symbol. The first node in the list is the master node. The remaining nodes are the compute nodes. The
text clusternode1 and clusternode2, for example, represent the names of two of the nodes in a
contrived computing cluster.
Put the resulting machines.LINUX file to the previously created staging area, where the installation
files reside. Otherwise, you will have to provide the path to this file during the installation.
2.1.2 Establishing Secure Shell Connectivity
Secure shell connectivity is intended to provide secure, encrypted communication channels between
two or more cluster nodes over an insecure network. You can use the Expect* shell script file
sshconnectivity.exp provided in the installation package to establish secure shell connectivity on a
cluster system. The Expect script is a tool for automating interactive applications. To run
sshconnectivity.exp, you need to have the Expect run-time software installed on your Linux*
system. To make sure that it is properly installed, type: which expect
If you encounter the “Command not found.” error message, you can download the Expect software
package from: http://www.nist.gov/el/msid/expect.cfm
The syntax for the sshconnectivity.exp command is as follows:
./sshconnectivity.exp machines.LINUX
The expect shell script creates or updates the ~/.ssh directory on each node of the cluster beginning
with the master node which is the first name listed in the machines.LINUX file. This script will prompt
you for your password twice. Upon successful completion of the script, the following message fragment
appears:
...
*********************************************************************
Node count = 4
Secure shell connectivity was established on all nodes.
...
*********************************************************************
...
A log of the transactions for this script is recorded in /tmp/sshconnectivity.<login-name>.log
where <login-name> is a placeholder for your actual login.
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