hadoop3.0 Connection refused

[lost_guy_in_scut]

hadoop3.0 Connection refused会是哪里出问题，本地ssh登录无问题

hadoop@ubuntu:~/hadoop-3$ sudo ./sbin/start-dfs.sh
WARNING: HADOOP_SECURE_DN_USER has been replaced by HDFS_DATANODE_SECURE_USER. Using value of HADOOP_SECURE_DN_USER.
Starting namenodes on [localhost]
pdsh@ubuntu: localhost: connect: Connection refused
Starting datanodes
pdsh@ubuntu: localhost: connect: Connection refused
Starting secondary namenodes [ubuntu]
pdsh@ubuntu: ubuntu: connect: Connection refused

[lost_guy_in_scut]

hosts 配置 hadoop@ubuntu:~/hadoop-3$ cat /etc/hosts 127.0.0.1 localhost 127.0.0.1 ubuntu # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters

[lost_guy_in_scut]

hadoop@ubuntu:~/hadoop-3$ ssh localhost Welcome to Ubuntu 14.04.4 LTS (GNU/Linux 4.2.0-27-generic x86_64) * Documentation: https://help.ubuntu.com/ Last login: Thu Oct 12 18:38:23 2017 from localhost hadoop@ubuntu:~$

[lost_guy_in_scut]

http://mowblog.com/start-dfs-sh%E6%8F%90%E7%A4%BArcmd-socket-permission-denied/