ssh多机互信

#!/bin/bash

os_user= 
os_password= 
hosts=' '#多个ip用空格分隔

id $os_user >/dev/null || exit 1

#获取用户家目录
user_home=$(grep -w $os_user /etc/passwd |cut -d : -f 6)

# 生成ssh从stdin读取免密的脚本
cat > /tmp/pass << EOF
#!/bin/bash
[[ $1 =~ password: ]] && cat || SSH_ASKPASS="$0" DISPLAY=nothing:0 exec setsid "$@"
EOF
chmod a+x /tmp/pass

# 生成密钥文件
su - $os_user -c "echo $USER; mkdir -p -m 700 .ssh; [ -f .ssh/id_rsa ] && echo '已存在私钥文件 .ssh/id_rsa' || { ssh-keygen -t rsa -f .ssh/id_rsa -P '' >/dev/null && echo '生成私钥文件 .ssh/id_rsa' ||  echo '生成私钥文件失败' ;}"


# 获取密钥内容
id_rsa=$(cat $user_home/.ssh/id_rsa)
id_rsa_pub=$(cat $user_home/.ssh/id_rsa.pub)



for host in $hosts;
do
	echo "$host: "

    echo "$os_password" | /tmp/pass ssh -o StrictHostKeyChecking=no $os_user@$host "mkdir -p .ssh; chmod 700 .ssh;
    echo '$id_rsa' > .ssh/id_rsa && chmod 600 .ssh/id_rsa
    echo '$id_rsa_pub' > .ssh/id_rsa.pub && chmod 644 .ssh/id_rsa.pub
    echo '$id_rsa_pub' > .ssh/authorized_keys && chmod 600 .ssh/authorized_keys
    "
    su - $os_user -c "ssh -o StrictHostKeyChecking=no $os_user@$host 'hostname|| exit 1' " && echo '成功' || echo '失败'

done