为所有节点配置ssh,允许不询问密码就可以执行命令。
Configure SSH for all your nodes to allow it to execute commands without being asked for a password.
这样做的目的是能够不需询问密码就可以执行ssh - n host whoami这样的命令。
The aim is to get something like SSH -n host whoami to work without being asked for a password.
比如,他们甚至不要求邮件验证,除了用户名和密码外,也不询问任何用户信息。
For example, they did not even require E-mail validation to register, nor did they ask for any information beyond user name and password.
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