我试图在gcp上运行hadoop。当我输入命令时 start-dfs.ssh && start-yarn 我得到以下。。。。。。。

localhost: chuckpryorjr@localhost: Permission denied (publickey).
localhost: chuckpryorjr@localhost: Permission denied (publickey).
Starting secondary namenodes [0.0.0.0]
0.0.0.0: chuckpryorjr@0.0.0.0: Permission denied (publickey).
starting yarn daemons
starting resourcemanager, logging to /usr/local/hadoop-ecosystem/hadoop-2.9.2/logs/yarn-chuckpryorj
r-resourcemanager-hadoopmasters.out
localhost: chuckpryorjr@localhost: Permission denied (publickey).

我不明白。以前，他们总是提示我输入密码（我从来没有想过要输入密码），现在，他们干脆拒绝了我。怎么能让这个无密码？也是我第一次在gcp上安装hadoop并运行它时，它运行得很好。有时我能完成我的工作…有时我做不到。