执行时出现获取权限被拒绝错误/start-dfs.sh用于单节点hadoop集群，尝试在CentOS上运行

Question

[dsawale@localhost sbin]$ ./start-dfs.sh 
Starting namenodes on [localhost]
localhost: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
Starting datanodes
localhost: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
Starting secondary namenodes [localhost.localdomain]
localhost.localdomain: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
2020-03-05 13:17:11,502 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

Answer 1

此错误通常归因于您没有创建和分发无密码SSH密钥。

您还需要从/etc/hosts 中删除localhost.localdomain