在本机上装的CentOS 5.5 虚拟机, 软件准备:jdk 1.6 U26 hadoop:hadoop-0.20.203.tar.gz ssh检查配置 [root@localhost ~]# ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): Created directory '/root/.ssh'. Enter…