COS助力HADOOP轻松实现数据存储

3.1.3 在master服务器上执行 vim /etc/hosts 辑配置文件内容如下 192.x.x.x master 192.x.x.x dn-1 192.x.x.x dn-2 192.x.x.x dn -3 备注：记得设置每台服务器的主机名 3.1.4 在master 上使用ping 命令分别ping master dn-1 dn-2 dn-3  ping master ping dn-1  3.1.5 hadoop:hadoop ./* 3.8.5 编辑 vim /bdapps/hadoop/etc/hadoop/vim slaves 告知hadoop集群从节点是哪些服务器  dn-1 dn-2 dn hadoop-hadoop-datanode-dn-2.out dn-1: starting datanode, logging to /bdapps/hadoop/logs/hadoop-hadoop-datanode-dn-1.out dn yarn-hadoop-resourcemanager-hadoop-master.out dn-1: starting nodemanager, logging to /bdapps/hadoop/logs/yarn-hadoop-nodemanager-dn-1.out dn