VM9+Debian6+hadoop0.23.9如何實現單點安裝

這篇文章主要介紹VM9+Debian6+hadoop0.23.9如何實現單點安裝，文中介紹的非常詳細，具有一定的參考價值，感興趣的小伙伴們一定要看完！

一、環境準備

1.1 Debian 6，安裝時根據提示安裝SSH；（如果是window中模擬，可先安裝VMware，本人選擇的是VMware workstation 9）

1.2 jdk1.7，hadoop0.23.9：下載位置http://mirror.esocc.com/apache/hadoop/common/hadoop-0.23.9/hadoop-0.23.9.tar.gz

二、安裝過程

2.1 為Debian安裝sudo

root@debian:apt-get install sudo

2.2 安裝jdk1.7

先通過SSH客戶端將jdk-7u45-linux-i586.tar.gz傳到/root/路徑下，然后執行下面命令

root@debian~:tar -zxvf jdk-7u45-linux-i586.tar.gz -C /usr/java/

2.3 hadoop下載&安裝

root@debian~:wget http://mirror.esocc.com/apache/hadoop/common/hadoop-0.23.9/hadoop-0.23.9.tar.gz
root@debian~:tar zxvf hadoop-0.23.9.tar.gz -C /opt/
root@debian~:cd /opt/
root@debian:/opt/# ln -s hadoop-0.23.9/ hadoop

      ----------這里做了個hadoop0.23.9的映射，相當于windows下面的.link

2.4 添加hadoop用戶權限

root@debian~:groupadd hadoop
root@debian~:useradd -g hadoop hadoop
root@debian~:passwd hadoop
root@debian~:vi /etc/sudoers

sudoers中添加hadoop用戶權限
root ALL=(ALL) ALL下方添加

hadoop ALL=(ALL:ALL) ALL

2.5 配置SSH登錄

root@debian:su – hadoop
root@debian:ssh-keygen -t rsa -P "自己的密碼" 可以是無密碼
root@debian:cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
root@debian:chmod 600 ~/.ssh/authorized_keys

測試登錄

root@debian:ssh localhost

  如果想設置空密碼登錄，還是提示輸入密碼的話，確認本機sshd的配置文件(需要root權限)
  root @debian :vi /etc/ssh/sshd_config
  找到以下內容，并去掉注釋符”#“
     RSAAuthentication yes
     PubkeyAuthentication yes
     AuthorizedKeysFile     .ssh/authorized_keys
  然后重啟sshd，不想設置空密碼登錄的不用重啟
  root @debian :servicesshd restart

2.6 配置hadoop用戶

root@debian:chown -R hadoop:hadoop /opt/hadoop
root@debian:chown -R hadoop:hadoop /opt/hadoop-0.23.9
root@debian:su – hadoop
hadoop@debian6-01:~#:vi .bashrc

添加以下部分
export JAVA_HOME=/usr/java//usr/java/jdk1.7.0_45
export JRE_HOME=${JAVA_HOME}/jre
export HADOOP_HOME=/opt/hadoop
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$HADOOP_HOME/bin:$PATH
export HADOOP_COMMON_HOME=$HADOOP_HOME
export HADOOP_HDFS_HOME=$HADOOP_HOME
export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop
export YARN_CONF_DIR=$HADOOP_HOME/etc/hadoop

root@debian:cd /opt/hadoop/etc/hadoop/
root@debian6-01:/opt/hadoop/etc/hadoop# vi yarn-env.sh

追加以下
export HADOOP_FREFIX=/opt/hadoop
export HADOOP_COMMON_HOME=${HADOOP_FREFIX}
export HADOOP_HDFS_HOME=${HADOOP_FREFIX}
export PATH=$PATH:$HADOOP_FREFIX/bin
export PATH=$PATH:$HADOOP_FREFIX/sbin
export HADOOP_MAPRED_HOME=${HADOOP_FREFIX}
export YARN_HOME=${HADOOP_FREFIX}
export HADOOP_CONF_HOME=${HADOOP_FREFIX}/etc/hadoop
export YARN_CONF_DIR=${HADOOP_FREFIX}/etc/hadoop

root@debian6-01:/opt/hadoop/etc/hadoop# vi core-site.xml

<configuration>
 <property>
  <name>fs.defaultFS</name>
  <value>hdfs://localhost:12200</value>
 </property>
 <property>
  <name>hadoop.tmp.dir</name>
  <value>/opt/hadoop/hadoop-root</value>
 </property>
 <property>
  <name>fs.arionfs.impl</name>
  <value>org.apache.hadoop.fs.pvfs2.Pvfs2FileSystem</value>
  <description>The FileSystem for arionfs.</description>
 </property>
</configuration>

root@debian6-01:/opt/hadoop/etc/hadoop# vi hdfs-site.xml

<configuration>
 <property>
  <name>dfs.namenode.name.dir</name>
  <value>file:/opt/hadoop/data/dfs/name</value>
  <final>true</final>
 </property>
 <property>
  <name>dfs.namenode.data.dir</name>
  <value>file:/opt/hadoop/data/dfs/data</value>
  <final>true</final>
 </property>
 <property>
  <name>dfs.replication</name>
  <value>1</value>
 </property>
 <property>
  <name>dfs.permission</name>
  <value>false</value>
 </property>
</configuration>

root@debian6-01:/opt/hadoop/etc/hadoop#cp mapred-site.xml.templatemapred-site.xml
root@debian6-01:/opt/hadoop/etc/hadoop# vi mapred-site.xml

<configuration>
    <property>
        <name>mapreduce.framework.name</name>
        <value>yarn</value>
    </property>
    <property>
        <name>mapreduce.job.tracker</name>
        <value>hdfs://localhost:9001</value>
        <final>true</final>
    </property>
    <property>
        <name>mapreduce.map.memory.mb</name>
        <value>1536</value>
    </property>
    <property>
        <name>mapreduce.map.java.opts</name>
        <value>-Xmx1024M</value>
    </property>
    <property>
        <name>mapreduce.reduce.memory.mb</name>
        <value>3072</value>
    </property>
    <property>
             <name>mapreduce.reduce.java.opts</name>
        <value>-Xmx2560M</value>
    </property>
    <property>
        <name>mapreduce.task.io.sort.mb</name>
        <value>512</value>
    </property>
    <property>
        <name>mapreduce.task.io.sort.factor</name>
        <value>100</value>
    </property>    
    <property>
        <name>mapreduce.reduce.shuffle.parallelcopies</name>
        <value>50</value>
    </property>
    <property>
        <name>mapreduce.system.dir</name>
        <value>file:/opt/hadoop/data/mapred/system</value>
    </property>
    <property>
        <name>mapreduce.local.dir</name>
        <value>file:/opt/hadoop/data/mapred/local</value>
        <final>true</final>
    </property>
</configuration>

root@debian6-01:/opt/hadoop/etc/hadoop# vi yarn-site.xml

<configuration>
<!-- Site specific YARN configuration properties -->
  <property>
    <name>yarn.nodemanager.aux-services</name>
    <value>mapreduce.shuffle</value>
  </property>
  <property>
    <name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name>
    <value>org.apache.hadoop.mapred.ShuffleHandler</value>
  </property>
  <property>
    <name>mapreduce.framework.name</name>
    <value>yarn</value>
  </property>
  <property>
    <name>user.name</name>
    <value>hadoop</value>
  </property>
  <property>
    <name>yarn.resourcemanager.address</name>
    <value>localhost:54311</value>
  </property>
  <property>
    <name>yarn.resourcemanager.scheduler.address</name>
    <value>localhost:54312</value>
  </property>
  <property>
    <name>yarn.resourcemanager.webapp.address</name>
    <value>localhost:54313</value>
  </property>
  <property>
    <name>yarn.resourcemanager.resource-tracker.address</name>
    <value>localhost:54314</value>
  </property>
  <property>
    <name>yarn.web-proxy.address</name>
    <value>localhost:54315</value>
  </property>
  <property>
    <name>mapred.job.tracker</name>
    <value>localhost</value>
       </property>
</configuration>

2.7 啟動并運行wordcount程序

設置JAVA_HOME

root@debian6-01:vi /opt/hadoop/libexec/hadoop-config.sh

# Attempt to set JAVA_HOME if it is not set
export JAVA_HOME=/usr/java/jdk1.7.0_45    -添加
if [[ -z $JAVA_HOME ]]; then  -------:wq!保存退出

格式化namenode

root@debian6-01:/opt/hadoop/lib# hadoop namenode -format

啟動

root@debian6-01:/opt/hadoop/sbin/start-dfs.sh
root@debian6-01:/opt/hadoop/sbin/start-yarn.sh

檢查

root@debian6-01:jps

6365 SecondaryNameNode
7196 ResourceManager
6066 NameNode
7613 Jps
6188 DataNode
7311 NodeManager

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