hadoop 运行不正常

Question

我是 hadoop 的新手，我通过以下步骤运行它:

ssh-keygen
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
ssh localhost
./start-all.sh

但我得到以下错误:

WARNING: Attempting to start all Apache Hadoop daemons as ... in 10 seconds.
WARNING: This is not a recommended production deployment configuration.
WARNING: Use CTRL-C to abort.
Starting namenodes on [localhost]
localhost: Permission denied (publickey,password).
Starting datanodes
localhost: Permission denied (publickey,password).
Starting secondary namenodes [karbasi]
karbasi: Permission denied (publickey,password).
Starting resourcemanager
Starting nodemanagers
localhost: Permission denied (publickey,password).

请帮助我解决我的问题。

Answer 1

Permission denied issue at Hadoop Installation

在上面的链接中，您可以找到问题的原因。

如果 ssh key 生成过程中出现任何错误，或者 hadoop 安装不是由同一用户提取并由同一用户启动，则会出现此问题。