ubuntu上的Hadoop ssh安裝錯誤-連接被拒絕

Question

嗨，我正在嘗試SSH到本地主機，但顯示連接拒絕錯誤

$ sudo addgroup hadoop
$ sudo adduser --ingroup hadoop hduser
user@ubuntu:~$ su - hduser
hduser@ubuntu:~$ ssh-keygen -t rsa -P ""
Generating public/private rsa key pair.
Enter file in which to save the key (/home/hduser/.ssh/id_rsa):
Created directory '/home/hduser/.ssh'.
Your identification has been saved in /home/hduser/.ssh/id_rsa.
Your public key has been saved in /home/hduser/.ssh/id_rsa.pub.
The key fingerprint is:
9b:82:ea:58:b4:e0:35:d7:ff:19:66:a6:ef:ae:0e:d2 hduser@ubuntu
The key's randomart image is:
[...snipp...]
hduser@ubuntu:~$ cat $HOME/.ssh/id_rsa.pub >> $HOME/.ssh/authorized_keys
hduser@ubuntu:~$ ssh localhost
ssh:connect to host localhost port 22: Connection refused

最后一行顯示錯誤，我不知道我在做什么錯。 我正在使用VMware，並使用它運行ubuntu。

Answer 1

****解決了****

我所要做的就是安裝openssh服務器，它可以正常工作