安装Hadoop

1.先解压hadoop.jar包

[root@bigdata ~]# tar zxf hadoop-2.6.0.tar.gz

1.1解压jkd

tar zxf jdk-7u79-linux-x64.gz

1.2 vi ~/.bash_profile

添加如下参数：

export PATH

export JAVA_HOME=$HOME/jdk1.7.0_79

export PATH=$JAVA_HOME/bin:$PATH

export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

2.cd hadoop-2.6.0/etc/hadoop/

3.配置如下文件

(1) vim hadoop-env.sh

最后一行添加： export JAVA_HOME=/root/jdk1.7.0_79

(2) vim yarn-env.sh

最后一行添加： export JAVA_HOME=/root/jdk1.7.0_79

(3) vim core-site.xml

fs.default.name

hdfs://bigdata:9000

io.file.buffer.size

131072

hadoop.tmp.dir

file:/root/hadoop/tmp

Abase for other temporary directories

hadoop.proxyuser.hduser.hosts

*

hadoop.proxyuser.hduser.groups

*

(4) vim hdfs-site.xml

dfs.namenode.secondary.http-address

bigdata:9001

dfs.namenode.name.dir

file:/root/hadoop/name

dfs.namenode.data.dir

file:/root/hadoop/data

dfs.replication

1

dfs.webhdfs.enabled

true

cp mapred-site.xml.template mapred-site.xml

(5) vim mapred-site.xml

mapreduce.framework.name

yarn

mapreduce.jobhistory.address

bigdata:10020

mapreduce.jobhistory.webapp.address

bigdata:19888

(6) vim yarn-site.xml

yarn.nodemanager.aux-services

mapreduce_shuffle

yarn.nodemanager.aux-services.mapreduce.shuffle.class

org.apache.hadoop.mapred.ShuffleHandler

yarn.resourcemanager.address

bigdata:8032

yarn.resourcemanager.scheduler.address

bigdata:8030

yarn.resourcemanager.resource-tracker.address

bigdata:8031

yarn.resourcemanager.admin.address

bigdata:8033

yarn.resourcemanager.webapp.address

bigdata:8088

4.配置slaves

cat slaves

5. 创建目录

[root@bigdata ~]$ mkdir hadoop

[root@bigdata ~]$ cd hadoop

[root@bigdata hadoop]$ mkdir tmp

[root@bigdata hadoop]$ mkdir name

[root@bigdata hadoop]$ mkdir data

6. 复制到其它2个节点

[root@bigdata ~]$ scp -r ./hadoop-2.6.0 bigdata2:/root/

[root@bigdata ~]$ scp -r ./hadoop-2.6.0 bigdata3:/root/

7. 格式化namenode

[root@bigdata hadoop-2.6.0]$ ./bin/hdfs namenode -format

8.启动hadoop

启动hdfs：

[root@bigdata hadoop-2.6.0]# ./sbin/start-dfs.sh

关闭hdfs：

[root@bigdata hadoop-2.6.0]# ./sbin/stop-dfs.sh

启动yarn：

[root@bigdata hadoop-2.6.0]# ./sbin/start-yarn.sh

关闭yarn：

[root@bigdata hadoop-2.6.0]# ./sbin/stop-yarn.sh

查看：

http://bigdata:50070

http://bigdata:8088