Hadoop-2.6.0-cdh5.7.0安裝詳解

下載Hadoop和JDK

• 下載Hadoop地址：

• 下載jdk：註冊甲骨文賬號下載，推薦1.7版本

安裝JDK

• 解壓jdk壓縮包

 tar -zxvf /home/hadoop/software/jdk-7u80-linux-x64.tar.gz -C /usr/java/ 

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• 配置jdk環境變數

hadoop:root:/usr/java:>vi /etc/profile # /etc/profile # System wide environment and startup programs, for login setup # Functions and aliases go in /etc/bashrc # It's NOT a good idea to change this file unless you know what you # are doing. It's much better to create a custom.sh shell script in # /etc/profile.d/ to make custom changes to your environment, as this # will prevent the need for merging in future updates. #add path export JAVA_HOME=/usr/java/jdk1.7.0_80 
export PATH=$JAVA_HOME/bin:$PATH #show path hadoop:root:/usr/java:>source /etc/profile
hadoop:root:/usr/java:>java -version
java version "1.7.0_80" Java(TM) SE Runtime Environment (build 1.7.0_80-b15)
Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode) 

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配置shh

hadoop:hadoop:/home/hadoop:>ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/hadoop/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /home/hadoop/.ssh/id_rsa.
Your public key has been saved in /home/hadoop/.ssh/id_rsa.pub.
The key fingerprint is:
ca:20:e2:68:64:46:e0:f2:62:63:b9:60:71:a5:75:4a hadoop@hadoop
The key's randomart image is: +--[ RSA 2048]----+
|.    E .         |
|o   = o          |
|.+ o .           |
|o.+              |
|+Xo .   S        |
|@oo. o .         |
|.+    o          |
|.                |
|                 |
+-----------------+
hadoop:hadoop:/home/hadoop:>
hadoop:hadoop:/home/hadoop:>cp .ssh/id_rsa.pub ~/.ssh/authorized_keys
hadoop:hadoop:/home/hadoop:>cd .ssh/
hadoop:hadoop:/home/hadoop/.ssh:>ll
total 12 -rw-r--r-- 1 hadoop hadoop 395 Jan 2 02:16 authorized_keys
-rw------- 1 hadoop hadoop 1675 Jan 2 02:16 id_rsa
-rw-r--r-- 1 hadoop hadoop 395 Jan 2 02:16 id_rsa.pub 

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安裝Hadoop

• 解壓Hadoop 
  hadoop:hadoop:/home/hadoop/app:>tar -zxvf /home/hadoop/software/hadoop-2.6.0-cdh5.7.0.tar.gz -C /home/hadoop/app/

• 配置環境

hadoop:hadoop:/home/hadoop:>vi .bash_profile # .bash_profile # Get the aliases and functions if [ -f ~/.bashrc ]; then . ~/.bashrc fi # User specific environment and startup programs export HADOOP_HOME=/home/hadoop/app/hadoop-2.6.0-cdh5.7.0 export PATH=$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$PATH hadoop:hadoop:/home/hadoop:>source .bash_profile 
hadoop:hadoop:/home/hadoop:>echo $HADOOP_HOME /home/hadoop/app/hadoop-2.6.0-cdh5.7.0 

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修改配置檔案

• hadoop-env.sh

export JAVA_HOME=/usr/java/jdk1.7.0_80 

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• core-site.xml

<configuration> <property> <name>fs.defaultFS</name> <value>hdfs://hadoop:8020</value> </property> <property> <name>hadoop.tmp.dir</name> <value>/home/hadoop/app/tmp</value> </property> </configuration> 

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• hdfs-site.xml

 <configuration> <property> <name>dfs.replication</name> <value>1</value> </property> </configuration> 

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• slaves

hadoop 

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• mapred-site.xml（正常情況下沒有這個檔案，可由 mapred-queues.xml.template 
  複製而來）

<configuration> <property> <name>mapreduce.framework.name</name> <value>yarn</value> </property> </configuration> 

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• yarn-site.xml

<configuration> <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property> </configuration> 

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格式化Hadoop

 hdfs namenode -format 

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啟動Hadoop

hadoop:hadoop:/home/hadoop/app/hadoop-2.6.0-cdh5.7.0/etc/hadoop:>start-all.sh 
This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh 18/01/02 02:49:33 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [hadoop]
hadoop: starting namenode, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/hadoop-hadoop-namenode-hadoop.out hadoop: starting datanode, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/hadoop-hadoop-datanode-hadoop.out Starting secondary namenodes [0.0.0.0] 0.0.0.0: starting secondarynamenode, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/hadoop-hadoop-secondarynamenode-hadoop.out 18/01/02 02:50:15 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
starting yarn daemons
starting resourcemanager, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/yarn-hadoop-resourcemanager-hadoop.out hadoop: starting nodemanager, logging to /home/hadoop/app/hadoop-2.6.0-cdh5.7.0/logs/yarn-hadoop-nodemanager-hadoop.out hadoop:hadoop:/home/hadoop/app/hadoop-2.6.0-cdh5.7.0/etc/hadoop:>jps 8345 NodeManager 8066 SecondaryNameNode 7820 NameNode 7914 DataNode 8249 ResourceManager 8613 Jps