【若泽大数据实战第十七天】Hadoop-2.6.0-cdh5.7.0安装详解

前言：

apache hadoop版本告一段落，现在安装新的cdh版本的hadoop

下载Hadoop和JDK

• 下载Hadoop地址：http://archive.cloudera.com/cdh5/cdh/5/hadoop-2.6.0-cdh5.7.0.tar.gz

• 下载jdk：注册甲骨文账号下载，推荐1.7版本

安装JDK

• 解压jdk压缩包

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

• 
  

• 配置jdk环境变量

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)

• 
  

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

安装Hadoop

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

• 配置环境

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

• 
  

修改配置文件

• hadoop-env.sh

export JAVA_HOME=/usr/java/jdk1.8.0_45

• core-site.xml

     
         fs.default.name
          hdfs://hadoop-01:9000
                        


     
          hadoop.tmp.dir
          /home/hadoop/app/tmp
                       

• hdfs-site.xml

        
             dfs.namenode.name.dir
               /home/hadoop/app/tmp/dfs/name
                        
        
               dfs.datanode.data.dir
                     /home/hadoop/app/tmp/dfs/data
                            
     
            dfs.namenode.secondary.http-address
                   hadoop-01:50090
                          
      
             dfs.namenode.secondary.https-address
                     hadoop-01:50091
                           
         
               dfs.replication
                      1
                            

• slaves

echo  "hadoop-01" > ./etc/hadoop/slaves

• mapred-site.xml（正常情况下没有这个文件，可由 mapred-site.xml.template 
  复制而来） cp mapred-site.xml.template   mapred-site.xml

<configuration>
        <property>
                <name>mapreduce.framework.namename>
                <value>yarnvalue>
        property>
configuration>

• yarn-site.xml

<configuration>
        <property>
                <name>yarn.nodemanager.aux-servicesname>
                <value>mapreduce_shufflevalue>
        property>

configuration>

格式化Hadoop

   hdfs namenode -format

启动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]
hadoop-01: 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-01: 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

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