当我跑完 bin/hdfs namenode -format ，我想跑 sudo sbin/start-dfs.sh ，但它抛出了一个错误 root account is not found . Starting namenodes on [localhost] ERROR: Refusing to run as root: root   account is not found. Aborting. Starting datanodes ERROR: Refusing to run as root: root   account is not found. Aborting. Starting secondary namenodes [bogon] 上一次登录：日 9月 23 14:57:26 CST 2018pts/0 上 bogon: ssh: connect to host bogon port 22: Connection timed out