不成功的連接到羣集的從屬節點上服務的集羣

Question

執行開始的下屬節點通過以下命令的方式：

hadoop@one:/export/hadoop-1.0.1/bin$. ./start-all.sh 

不是我第一次收到結果

starting namenode, logging to /export/hadoop-1.0.1/libexec/../logs/hadoop--namenode-one.out 
192.168.1.10: starting datanode, logging to /export/hadoop-1.0.1/libexec/../logs/hadoop-hadoop-datanode-myhost2.out 
192.168.1.11: ssh: connect to host 192.168.1.11 port 22: Connection timed out 
192.168.1.5: starting secondarynamenode, logging to /export/hadoop-1.0.1/libexec/../logs/hadoop-hadoop-secondarynamenode-one.out 
starting jobtracker, logging to /export/hadoop-1.0.1/libexec/../logs/hadoop--jobtracker-one.out 
192.168.1.10: starting tasktracker, logging to /export/hadoop-1.0.1/libexec/../logs/hadoop-hadoop-myhost2.out 
192.168.1.11: ssh: connect to host 192.168.1.11 port 22: Connection timed out 

如何解決以下錯誤：

ssh: connect to host port 22: Connection timed out 

hadoop@one: /export/hadoop-1.0.1/bin$ ssh -vvv 192.168.1.10 
Sun_SSH_1.5, SSH protocols 1.5/2.0, OpenSSL 0x1000004f 
debug1: Reading configuration data /etc/ssh/ssh_config 
debug1: Rhosts Authentication disabled, originating port will not be trusted. 
debug1: ssh_connect: needpriv 0 
debug1: Connecting to 192.168.1.10 [192.168.1.10] port 22 
debug1: connect to address 192.168.1.10 port 22: Connection timed out 
ssh: connect to host 192.168.1.10 port 22: Connection timed out 

怎樣做才能糾正錯誤？

Answer 1

你的機器上運行着sshd守護程序嗎？您的操作系統可能帶有ssh，但爲了啓動sshd守護程序，您需要完全安裝ssh。完成我的意思是：

ssh：我們用來連接遠程計算機的命令 - 客戶端。

sshd：在服務器上運行並允許客戶端連接到此服務器的守護進程。

此外，請確保端口22沒有問題。如果您仍然遇到一些問題，請嘗試使用-v開關ssh以獲取完整跟蹤。

ssh -v myhost2 

你可以去here瞭解ssh的詳細解釋。