安装hadoop

1:安装包

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http://hadoop.apache.org/releases.html

http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

hadoop-2.6.4 （binary）

jdk-8u102-linux-x64.tar.gz

2：节点信息

centos7 * 3

master 10.10.0.115

slave1 10.10.0.116

slave2 10.10.0.117

3:安装过程

3.1 节下初始化（略）

主机名防火墙 selinux 等

3.2 节点互信

[root@master ~]#ssh-keygen

[root@master ~]#cat /root/.ssh/id_rsa.pub > /root/.ssh/authorized_keys

[root@master ~]#scp -r /root/.ssh slave1:/root/

[root@master ~]#scp -r /root/.ssh slave2:/root/

3.3 在所有节点安装jdk

[root@master ~]#tar -zxvf jdk-8u102-linux-x64.tar.gz

[root@master ~]#mkdir /usr/soft

[root@master ~]#mv jdk1.8.0_102 /usr/soft/

[root@master ~]#vim /etc/profile

...

   export JAVA_HOME=/usr/soft/jdk1.8.0_102
   export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
   export PATH=$PATH:$JAVA_HOME/bin

[root@master ~]#source /etc/profile

[root@master ~]#java -version
java version "1.8.0_102"
Java(TM) SE Runtime Environment (build 1.8.0_102-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.102-b14, mixed mode)

其它节点同样操作

3.4 安装hadoop

先在master上安装配置，然后scp到其它节点即可

[root@master ~]#tar -zxvf hadoop-2.6.4.tar.gz

[root@master ~]#mv hadoop-2.6.4 /usr/soft/

[root@master ~]#cd /usr/soft/hadoop-2.6.4/

[root@master ~]#mkdir hdfs

[root@master ~]#mkdir hdfs/data

[root@master ~]#mkdir hdfs/name

[root@master ~]#mkdir tmp

[root@master ~]# cat /usr/soft/hadoop-2.6.4/etc/hadoop/core-site.xml

        fs.defaultFS
        hdfs://10.10.0.115:9000


        hadoop.tmp.dir
        file:/usr/soft/hadoop-2.6.4/tmp


        io.file.buffer.size
        131702

[root@master ~]# cat /usr/soft/hadoop-2.6.4/etc/hadoop/hdfs-site.xml

        dfs.namenode.name.dir
        file:/usr/soft/hadoop-2.6.4/hdfs/name


        dfs.datanode.data.dir
        file:/usr/soft/hadoop-2.6.4/hdfs/data


        dfs.replication
        2


        dfs.namenode.secondary.http-address
        10.10.0.115:9001


    dfs.webhdfs.enabled
    true

[root@master ~]#cp /usr/soft/hadoop-2.6.4/etc/hadoop/mapred-site.xml.template /usr/soft/hadoop-2.6.4/etc/hadoop/mapred-site.xml

[root@master ~]# cat /usr/soft/hadoop-2.6.4/etc/hadoop/mapred-site.xml

        mapreduce.framework.name
        yarn


        mapreduce.jobhistory.address
        10.10.0.115:10020


        mapreduce.jobhistory.webapp.address
        10.10.0.115:19888


        yarn.nodemanager.aux-services
        mapreduce_shuffle


        yarn.nodemanager.auxservices.mapreduce.shuffle.class
        org.apache.hadoop.mapred.ShuffleHandler


        yarn.resourcemanager.address
        10.10.0.115:8032


        yarn.resourcemanager.scheduler.address
        10.10.0.115:8030


        yarn.resourcemanager.resource-tracker.address
        10.10.0.115:8031


        yarn.resourcemanager.admin.address
        10.10.0.115:8033


        yarn.resourcemanager.webapp.address
        10.10.0.115:8088


        yarn.nodemanager.resource.memory-mb
        768