Hadoop集群化搭建（四）Hadoop-2.6.0安装

软件环境
操作系统	CentOS 6.4 64bit (Basic Server + 桌面环境)
虚拟机	VMware Workstation 12.0
JDK	1.7

1 安装Hadoop-2.6.0

1.1 下载

wget http://mirrors.hust.edu.cn/apache/hadoop/common/hadoop-2.6.0/hadoop-2.6.0.tar.gz

1.2 解压并安装

mkdir local
mkdir local/opt
tar -zxf hadoop-2.6.0.tar.gz -C ~/local/opt

1.3 配置环境变量

vim ~/.bashrc

末尾追加：

export HADOOP_PREFIX=$HOME/local/opt/hadoop-2.6.0
export HADOOP_COMMON_HOME=$HADOOP_PREFIX
export HADOOP_HDFS_HOME=$HADOOP_PREFIX
export HADOOP_MAPRED_HOME=$HADOOP_PREFIX
export HADOOP_YARN_HOME=$HADOOP_PREFIX
export HADOOP_CONF_DIR=$HADOOP_PREFIX/etc/hadoop
export PATH=$PATH:$HADOOP_PREFIX/bin:$HADOOP_PREFIX/sbin

2 文件配置（共6个)

2.1 hadoop-env.sh

export JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.101.x86_64

2.2 core-site.xml

<configuration>
<property>
    <name>fs.defaultFSname>
    <value>hdfs://mastervalue>
property>
<property>
    <name>hadoop.tmp.dirname>
    <value>/home/hadoop/local/var/hadoop/tmp/hadoop-${user.name}value>
property>
configuration>

2.3 hdfs-site.xml

<configuration>
<property>
    <name>dfs.datanode.data.dirname>
    <value>file:///home/hadoop/local/var/hadoop/hdfs/datanodevalue> 
property>
<property>
    <name>dfs.namenode.name.dirname>
    <value>file:///home/hadoop/local/var/hadoop/hdfs/namenodevalue> 
property>
<property>
    <name>dfs.namenode.checkpoint.dirname>
    <value>file:///home/hadoop/local/var/hadoop/hdfs/namesecondryvalue>
property>
<property>
    <name>dfs.replicationname>
    <value>2value>
property>
configuration>

2.4 yarn-site.xml

<configuration>
<property>
    <name>yarn.nodemanager.aux-servicesname>
    <value>mapreduce.shufflevalue>
property>
<property>
    <name>yarn.resourcemanager.hostnamename>
    <value>mastervalue>
property>
configuration>

2.5 mapred-site.xml

<configuration>
<property>
    <name>mapreduce.framework.namename>
    <value>yarnvalue>
property>
<property>
    <name>mapreduce.jobtracker.staging.root.dirname>
    <value>/uservalue>
property>
configuration>

2.6 slaves

master
slave1
slave2

3 64位Native Library替换

3.1 下载64位Native Library

wget http://dl.bintray.com/sequenceiq/sequenceiq-bin/hadoop-native-64-2.6.0.tar

3.2 解压Native Library，并覆盖hadoop-2.6.0/lib/native中文件

4 启动Hadoop

4.1 格式化HDFS

hdfs namenode -format

4.2 启动Hadoop集群

拷贝local文件到slave1和slave2并各自进行.bashrc配置

start-dfs.sh
start-yarn.sh

4.3 验证

jps

如果一切顺利，将可以看到：
master:
xxxx NameNode
xxxx DataNode
xxxx SecondaryNameNode
xxxx Jps
slave1:
xxxx DataNode
xxxx Jps
slave2:
xxxx DataNode
xxxx Jps