Hadoop1.0.1安装部署（二）
PS:/etc/hosts:
127.0.1.1 ubuntu-hadoop01
192.168.56.102ubuntu-hadoop02
192.168.56.103ubuntu-hadoop03
/etc/hostname:
ubuntu-hadoop01
3、安装并运行Hadoop
conf/hadoop-env.sh:
export JAVA_HOME=/usr/lib/jvm/jdk1.6.0_45
conf/core-site.xml:
fs.default.name
hdfs://ubuntu-hadoop01:9000
hadoop.tmp.dir
/home/grid/hadoop/tmp
conf/hdfs-site.xml:
dfs.replication
1
conf/mapred-site.xml:
mapred.job.tracker
ubuntu-hadoop01:9001
conf/masters:
ubuntu-hadoop01
conf/slaves:
ubuntu-hadoop02
ubuntu-hadoop03
格式化Hadoop的文件系统HDFS：
输入命令：bin/hadoop namenode -format
启动Hadoop：
输入命令，启动所有进程：bin/start-all.sh
验证Hadoop安装是否成功：
http://localhost:50030(MapReduce的Web页面)
http://localhost:50070(HDFS的Web页面)
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