环境说明 假设我们有三台机器分别为bigdata111,bigdata112,bigdata113,三台机器均为centos 7系统. 配置SSH免密登录 (1)利用Xshell的发送键输入到所有会话功能,在三台机器生成秘钥 [root@bigdata111 hadoop-2.8.4]# ssh-keygen Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa…
默认安装ssh是有的.只是hosts访问问题. 1.在hosts.deny文件尾添加sshd:ALL意思是拒绝所有访问请求 [root@localhost ~]# vi /etc/hosts.deny 修改后看起来如下: ## hosts.deny This file describes the names of the hosts which are# *not* allowed to use the local INET services, as dec…