批量拷贝公钥到指定的主机，实现免秘钥登录

一：copy公钥脚本

[root@ansible tmp]# cat copy-pubkey.sh 
#!/bin/bash
PassWord=$1

rpm -qa |grep sshpass 2>&1 > /dev/null
if [ $? -ne 0 ];then
    yum -y install sshpass
fi

if [ ! -f ~/.ssh/id_rsa ];then
    ssh-keygen -P "" -f ~/.ssh/id_rsa
fi

for ip in {192.128.232.13,192.128.232.15}
do
    echo "== copy $ip pub-key to $ip is starting =="
    sshpass -p${PassWord} ssh-copy-id -i /root/.ssh/id_rsa.pub root@$ip "-o StrictHostKeyChecking=no " &> /dev/null
    if [ $? -eq 0 ];then
        echo "host $ip is successed"
    fi
    echo "== copy pub-key to $ip is end =="
done

#执行脚本，后面要加位置参数为密码

[root@ansible tmp]# ./copy-pubkey.sh 123456

二：检查批量主机是否可以正常免秘钥操作

[root@ansible tmp]# cat check-sship.sh 
#!/bin/bash
CMD=$1
for ip in {192.128.232.13,192.128.232.15}
do
    echo "=== host $ip check ==="
    ssh $ip $CMD    
    if [ $? -eq 0 ];then
      echo "ssh login successed"
    fi
done

#执行脚本，后面需要加位置参数，是在远程主机上执行的操作

[root@ansible tmp]# ./check-sship.sh hostname

三：优化脚本，如果主机的password都不一样，就需要使用下面的脚本

[root@master03 ~]# cat ssh-copy.sh 
#!/bin/bash
rpm -qa |grep sshpass 2>&1 > /dev/null
if [ $? -ne 0 ];then
    yum -y install sshpass
fi

if [ ! -f ~/.ssh/id_rsa ];then
    ssh-keygen -P "" -f ~/.ssh/id_rsa
fi

for ip in {192.128.232.13,192.128.232.15}
do
    echo "== copy $ip pub-key to $ip is starting =="
    echo -n "Enter $ip password: "
    read PassWord
    sshpass -p${PassWord} ssh-copy-id -i /root/.ssh/id_rsa.pub root@$ip "-o StrictHostKeyChecking=no " &> /dev/null
    if [ $? -eq 0 ];then
        echo "host $ip is successed"
    fi
    echo "== copy pub-key to $ip is end =="
done

1.执行操作，拷贝公钥到定义的远程主机，实现免秘钥

[root@master03 ~]# chmod +x ssh-copy.sh 

[root@master03 ~]# ./ssh-copy.sh 
== copy 192.128.232.13 pub-key to 192.128.232.13 is starting ==
Enter 192.128.232.13 password: 123456    # 这里就要输入13主机的password
host 192.128.232.13 is successed
== copy pub-key to 192.128.232.13 is end ==
== copy 192.128.232.15 pub-key to 192.128.232.15 is starting ==
Enter 192.128.232.15 password: 123456   # 这里就要输入15主机的password
host 192.128.232.15 is successed
== copy pub-key to 192.128.232.15 is end ==