[hadoop@bruce02 hadoop]$ start-dfs.sh
Starting namenodes on [bruce02.mydomain]
bruce02.mydomain: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
Starting datanodes
localhost: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
Starting secondary namenodes [bruce02.mydomain]
bruce02.mydomain: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
2018-04-21 14:01:37,865 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
默認情況下是開啓ssh公鑰認證的,需要進行公鑰認證。
僞分佈式公鑰認證操作如下:
分佈式公鑰認證操作如下:
規劃:bruce01、bruce02可以無密鑰登錄三臺主機
bruce01-->bruce01
-->bruce02
-->bruce03
bruce02-->bruce01
-->bruce02
-->bruce03
1、在bruce01上生成一公私鑰對
# su - bruce
$ ssh-keygen -t rsa (一直回車,rsa爲指定的加密算法)
(執行後,在/home/bruce/.ssh/下生成一對文件:id_rsa、id_rsa.pub)
2、把公鑰發給bruce01、bruce02、bruce03,會在.ssh/內生成authorized_keys文件
$ ssh-copy-id bruce01.mydomain (需要輸入‘yes’和目標節點的密碼)
$ ssh-copy-id bruce02.mydomain
$ ssh-copy-id bruce03.mydomain
(公鑰發給了對方,就可以不用輸入密碼,直接使用私鑰登錄到對方的主機)
$ ssh [email protected] (登錄測試)