Question

通过以下命令在集群的从属节点上执行服务启动：

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

不是我第一次收到结果

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

如何解决以下错误：

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

如何纠正错误？

Answer 1

您的计算机上是否运行了sshd守护程序？您的操作系统可能带有ssh，但是为了启动sshd守护程序，您需要完全安装ssh。完成后我的意思是：

ssh：我们用来连接远程机器的命令 - 客户端。

sshd：在服务器上运行并允许客户端访问的守护程序   连接到此服务器。

此外，请确保端口22没有问题。如果您仍然遇到问题，请尝试使用-v开关进行ssh以获取完整的跟踪。

ssh -v myhost2

您可以here查看ssh的详细说明。

ssh与集群下级节点的连接失败

1 个答案: