無法啓動Namenode，Secondary Namenode和Datanode

Question

我已經安裝Hadoop-2.7.3 on VirtualBox。

當我在終端鍵入命令./start-all.sh，所述Namenode，Secondary Namenode & Datanode沒有開始。以下是錯誤截圖。請爲這個問題提出一些解決方案。

錯誤我在我的終端窗口上。

sreenu@MyPC:~/hdfs/sbin$ ./start-all.sh 

This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh 
17/07/24 16:38:12 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 

Starting namenodes on [localhost] 
localhost: ssh: connect to host localhost port 22: Connection refused 
localhost: ssh: connect to host localhost port 22: Connection refused 

Starting secondary namenodes [0.0.0.0] 
0.0.0.0: ssh: connect to host 0.0.0.0 port 22: Connection refused 

17/07/24 16:38:19 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable 

starting yarn daemons 
resourcemanager running as process 2899. Stop it first. 

localhost: ssh: connect to host localhost port 22: Connection refused 

sreenu@MyPC:~/hdfs/sbin$ jps 
3536 Jps 
2899 ResourceManager 
3175 JobHistoryServer 

sreenu@MyPC:~/hdfs/sbin$ 

Error I'm seeing on terminal window.

Answer 1

這個問題是通過卸載並重新安裝的OpenSSH服務器和OpenSSH客戶端在我的機器上解決。

命令：

sudo易於得到刪除的OpenSSH服務器OpenSSH的客戶端

sudo易於得到安裝openssh-server的openssh-客戶

關閉終端，重新啓動VirtualBox並嘗試再次啓動所有守護進程。