基于CentOS56安装Hadoop

1.解压软件包 tar zxf hadoop-0.21.0.tar.gz 2.将软件移到/opt/目录下 mv /root/software/hadoop-0.21.0 hadoop 3.修改用户 chown -R root:root hadoop/ 4.设置环境变量(30,31,32三台机子上都要做) vi /etc/profile 或 vi ~/.bashrc HADOOP_HOME=/opt/hadoop PATH=$HADOOP_HOME/bin:$PATH export HADOOP_HOME PATH 5.设置参数 vi hadoop-env.sh export JAVA_HOME=/usr/java/jdk1.6.0_27 vi core-site.xml fs.default.namehdfs://192.168.1.30:9000vi hdfs-site.xml dfs.replication2vi mapred-site.xml mapred.job.tracker192.168.1.30:9001vi masters 192.168.1.30 vi slaves 192.168.1.31 192.168.1.32 6.分发hadoop软件 scp -r /opt/hadoop 192.168.1.31:/opt/hadoop scp -r /opt/hadoop 192.168.1.32:/opt/hadoop 7.格式化文件系统 hadoop namenode -format 8.启动与关闭集群 ./opt/hadoop/bin/start-all.sh ./opt/hadoop/bin/stop-all.sh 9.查看Master和slave进程状态 /usr/java/jdk1.6.0_27/bin/jps