linux批量ssh免密

实现从192.168.0.1主机以用户/密码（ssh_user/ssh_pass)访问192.168.0.2~192.168.0.101， 共计100台linux主机ssh免密登录。

以ssh_user用户登录192.168.0.1，执行以下命令生成密钥。

 ssh-keygen -t rsa -P "" -f ~/.ssh/id_rsa

#!/usr/bin/sh
hosts=$1
for host in $(cat "${hosts}")
do
  sshpass -p 'ssh_pass' ssh-copy-id -o StrictHostKeyChecking=no -i ~/.ssh/id_dsa.pub ssh_user@$host  > /dev/null 2>&1 && echo
 "$host succeed." || echo "$host failed."
done
exit;

192.168.0.2
192.168.0.3
192.168.0.4
...(此处省略)
192.168.0.101

sh ssh_pass.sh hosts.txt

ssh ssh_user@192.168.0.2