Because the Hadoop master node communicates with slave nodes using SSH, you should set up an authenticated no-passphrase SSH connection between the master and slaves.
因为hadoop主节点使用SSH与从节点通信，所以应该在主节点和从节点之间建立经过身份验证的无密码的SSH连接。
It is assumed that the Hadoop slave node has been configured a priori in such a manner that it registers with the Hadoop master node.
这里假设Hadoop从节点已经在之前配置完成，也就是它已经注册到Hadoop主节点中。
Figure 14 shows the Hadoop Master instance and the two Hadoop Data node (slave) instances.
图14显示了Hadoop Master实例与两个Hadoop Data节点(从)实例。
应用推荐