SSH免密码登陆脚本

#!/bin/bash

# for self configure

wd=.__tmp__sfsfas

mkdir -p $wd

hosts=(172.172.177.23 172.172.17.24 172.172.177.25)

for i in "${hosts[@]}"

do

script=$(cat << \EOF

ssh-keygen -t rsa <<eof

eof

EOF

)

exe=‘bash << EOF

‘"$script"‘

EOF‘

echo =======$i=======

ssh -o StrictHostKeyChecking=no $i "$exe"

ssh-copy-id -i ~/.ssh/id_rsa.pub $i  #这句其实可省，不过加上后会少输入几次密码

scp $i:~/.ssh/id_rsa.pub $wd/id_rsa.pub_$i

done

cat $wd/id_rsa.pub_*  > $wd/authorized_keys

chmod 600 $wd/authorized_keys

for i in "${hosts[@]}"

do

scp $wd/authorized_keys $i:~/.ssh/

scp ~/.ssh/known_hosts    $i:~/.ssh/

done

rm -rf $wd

echo "OK,big con ustc!"