#! /bin/bash

### ssh_allinone
### This script will try to install passwordless ssh among the frontend and nodes semiautomatically. 
### Note: this script may not be required if /home/common/nfs has been successfully exported by frontend and shared amomg the nodes using nfs.

# Instruction: 

# Log in frontend after it is rebooted at the end of centos6_frontend as user common.
# Run this script by issuing 'sh /home/common/nfs/ssh_allinone'.

# After running this script, do the following MANUAL procedure: ssh from the frontend into each node as common to execute the file ssh_wo_passwd_to_all_PCs_for_cluster in /home/common. Do this one by one for all nodes. 

#
# node1 | sh ~/ssh_wo_passwd_to_all_PCs_for_cluster
# node2 | sh ~/ssh_wo_passwd_to_all_PCs_for_cluster
# ...
### End of instruction.


###########
chmod +x /home/common/nfs/*
cd /home/common
sh /home/common/nfs/ssh_wo_passwd_to_all_PCs_for_cluster 

## copy all the relevant files to each node 
scp -r /home/common/nfs* 10.1.255.231:~/
scp -r /home/common/nfs* 10.1.255.232:~/
scp -r /home/common/nfs* 10.1.255.233:~/
scp -r /home/common/nfs* 10.1.255.234:~/
scp -r /home/common/nfs* 10.1.255.235:~/
scp -r /home/common/nfs* 10.1.255.236:~/
scp -r /home/common/nfs* 10.1.255.237:~/
# Now each nodes should find the files ssh_wo_passwd_to_all_PCs_for_cluster, ssh-agen, ssh-copy-cluster in /home/common/