ssh免密配置

#!/bin/bash

# 获取系统版本
get_osname() {
	os_name=`cat /etc/os-release|grep "^ID="|awk -F= '{print $2}'`
        if [ "$os_name" == "ubuntu" ];then
		return 0
	elif [ "$os_name" == '"centos"' ];then
		return 1
   	fi
}

check_out() {
        if [ $? -eq 0 ];then
                echo "expect install complete"
        else
                echo "expect install falied"
                exit -1
        fi
}
# 检查expect   
EXPECT_CMD=`which expect 2>/dev/null`
if [ $? -ne 0 ]
  then
      echo "expect installing..."
      if get_osname;then
          apt -y install expect 2>&1 > /dev/null
          check_out
      else
          yum -y install expect 2>&1 > /dev/null
	  check_out
      fi
fi

# 检查.ssh
SSHKEY_RSA=/root/.ssh/id_rsa
[ ! -f ${SSHKEY_RSA} ] && ssh-keygen -t rsa -f ${SSHKEY_RSA} -P ""
PASSWD="password"

function sshcopyid
{
    expect -c "
        set timeout -1;
        spawn ssh-copy-id $1;
        expect {
            \"yes/no\" { send \"yes\r\" ;exp_continue; }
            \"password:\" { send \"$PASSWD\r\";exp_continue; }
        };
    "
}

for host in $@
do
    sshcopyid $host

done