关于大数据启动hdfs服务时遇到的问题！

启动时遇到的奇怪问题：

[root@node01 hadoop-2.7.5]# sbin/start-dfs.sh
Starting namenodes on [node01]
node01: starting namenode, logging to /usr/bigdata/hadoop-2.7.5/logs/hadoop-root-namenode-node01.out
The authenticity of host 'node03 (192.168.48.103)' can't be established.
ECDSA key fingerprint is SHA256:ROlwHQzwe6yY9tcq2bC4/bjd/uKFIvG6SnIAkHGHxcQ.
ECDSA key fingerprint is MD5:3e:af:76:59:03:1a:c3:d8:92:cd:f3:7f:26:43:06:cf.
Are you sure you want to continue connecting (yes/no)? root@node02's password: node01: starting datanode, logging to /usr/bigdata/hadoop-2.7.5/logs/hadoop-root-datanode-node01.out
node03: Warning: Permanently added 'node03,192.168.48.103' (ECDSA) to the list of known hosts.

不让我选择yes还是no，也不让我输入密码，直接就自己跳过了，求怎么解决

这是因为第一次连接node03时需要确认其主机名称的身份。请手动输入yes并回车，然后就不需要输入密码了