安装Java JDK
配置Java环境变量 vi /etc/profile
修改主机名 vi /etc/sysconfig/network
主机名快速生效 hostname centos002
centos001添加centos002映射 vi /etc/hosts
centos001 hosts配置文件覆盖centos002 hosts配置文件 scp /etc/hosts centos002:/etc/
centos002 ssh免密码登录 ssh-copy-id centos002
拷贝hadoop-2.6.5至centos002 scp -r hadoop-2.6.5/ centos002:/root/bigdata
centos002添加hadoop环境变量 vi /etc/profile
末行添加 export PATH=$PATH:$JAVA_HOME/bin:$HADOOP_HOME/bin:$HADOOP_HOME/sbin
刷新环境变量 source /etc/profile
启动hdfs扩容 hadoop-daemon.sh start datanode
查看java安装目录 which java
启动yarn扩容 yarn-daemon.sh start nodemanager
主机slaves配置文件添加从机
关闭集群hdfs sbin/stop-dfs.sh
关闭集群yarn sbin/stop-yarn.sh
启动集群hdfs sbin/start-dfs.sh
启动集群yarn sbin/start-yarn.sh