                        课程
                    
                        /云计算&大数据
                        
                            /大数据
                        
                        /认识Hadoop--基础篇

为什么只有三个运行程序

root@andy:/opt/hadoop-1.2.1/bin# start-all.sh
Warning: $HADOOP_HOME is deprecated.

starting namenode, logging to /opt/hadoop-1.2.1/libexec/../logs/hadoop-root-namenode-andy.out
localhost: Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts.
localhost: Permission denied (publickey).
localhost: Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts.
localhost: Permission denied (publickey).
starting jobtracker, logging to /opt/hadoop-1.2.1/libexec/../logs/hadoop-root-jobtracker-andy.out
localhost: Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts.
localhost: Permission denied (publickey).
root@andy:/opt/hadoop-1.2.1/bin# jps
1276 JobTracker
1122 NameNode
1423 Jps
root@andy:/opt/hadoop-1.2.1/bin#

慕大侠

2016-04-25

源自：认识Hadoop--基础篇 2-3

关注问题我要回答

3519

操作

收起

3 回答

无名的凉风吹草地回答被采纳 +3 积分
2016-04-25

localhost没有登录成功，应该是要安装ssh-server。

sudo apt-get install openssh-server
ssh localhost #登录，会要你输入密码
exit #退出当前登录
cd ~/.ssh/ #如果没有此目录，要先ssh localhost
ssh-keygen -t rsa #生成一个密钥
cat ./id_rsa.pub >> ./authorized_keys #密钥放入授权中
做完以上步骤之后再ssh localhost，此时不用输入密码了

如果都不行，请去hadoop/logs下看日志。