192.168.101.52
192.168.101.53
192.168.101.54
192.168.101.55
192.168.101.56

#!/bin/bash# ssh-keygen every node
hosts="hosts"if [ -f hosts ]
thenecho "Start ssh free"
elseecho "Please add hosts file"exit 1
fiif [ $# != 2 ]
thenecho "USAGE:$0 user password!"exit 1
elseusername=$1pawdname=$2#login every node and ssh-keygenfor x in `cat hosts | sed "/^#.*/d"`do#echo ${x}if [ -f keygen ]thenexpect keygen ${username} ${x} ${pawdname}elseecho "ssh-keygen not exists"echo "Please check it"exit 1fidone
fi

#!/usr/bin/expect -fset timeout 2set name [lindex $argv 0]
set node [lindex $argv 1]
set pawd [lindex $argv 2]spawn ssh ${name}@${node}
expect {"*yes/no*" {send "yes\n";exp_continue}"*password:" {send "$pawd\r"}
}expect "*${name}@${node}*"
send "ssh-keygen -t rsa -P ''\r"
expect "*ssh/id_rsa):"
send "\r"
expect {"Overwrite (y/n)?" {send "y\n";exp_continue}"*${name}@${node}*" {send "exit\r"}
}
expect eof
exit

#!/bin/bash
TMP="tmps"
rm -rf ${TMP}
mkdir ${TMP}TMP=`cd ${TMP};pwd`
HOST="hosts"
USER=""
PAWD="111111"if [ $# == 1 ]
thenUSER=$1
elif [ $# == 2 ]
thenUSER=$1PAWD=$2
elseecho "USAGE:$0 username"echo "USAGE:$0 username password"exit 1
fiecho ${USER}" "${PAWD}#download id_rsa.pub from every node to the tmp dir
count=1
for x in `cat ${HOST}| sed "/^#.*/d"`
doexpect download ${USER} ${x} ${PAWD} "${TMP}/${count}"count=`expr $count + 1`
done#let all id_rsa.pub into authorized_keys
count=1
for x in `ls ${TMP}/*`
doif [ count == 1 ]thencat ${x} > /home/${USER}/.ssh/authorized_keyselsecat ${x} >> /home/${USER}/.ssh/authorized_keysficount=`expr $count + 1`
done#upload the authorized_keys to every node
for x in `cat ${HOST}| sed "/^#.*/d"`
doexpect upload ${USER} ${x} ${PAWD}
done#chmod 600 to authorized_keys
for x in `cat ${HOST}| sed "/^#.*/d"`
doexpect priority ${USER} ${x} ${PAWD}
done