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懒人记录 Hadoop2.7.1 集群搭建过程

[日期:2016-07-05] 来源:博客园-原创精华区   作者: [字体: ]

懒人记录 Hadoop2.7.1 集群搭建过程

2016-07-02 13:15:45

  • 总结
    • 除了配置hosts ,和免密码互连之外,先在一台机器上装好所有东西
    • 配置好之后,拷贝虚拟机,配置hosts和免密码互连
    • 之前在公司装的时候jdk用的32位,hadoop的native包不能正常加载,浪费好多时间自己编译,所以jdk务必64位
    • 配置免密码互连
    • 其它也没什么了,注意下文件的用户组,不一定是"hadoop",根据自己的情况设置
      • sudo chown -R hadoop /opt
      • sudo chgrp -R hadoop /opt
  • 准备文件 
    1. linuxmint17x64
    2. jdk1.8 x64    一定要64位,除非你想自己去编译hadoop的native包
    3. hadoop2.7.1
    4. VirtualBox
    5. MobaXterm  SSH工具 用putty也可以,随意
  • 虚拟机安装和配置

我们需要三台虚拟机,可以先装一台虚拟机,下载好hadoop,配置好JDK,设置好环境变量后拷贝虚拟机

    1. 安装第一台虚拟机
      1. 安装的步骤不说了,说一下注意点
        • 注意共享粘贴板
        • 多添加一块网卡,选择"HostOnly",这样我们应该就有两个网卡一个NAT,一个HostOnly.
        • 安装的时候会有一步下载语言包,这步直接Skip.
      2. 安装需要用到的软件和一些设置,其实这块才是最麻烦的
        • 查看一下你当前的组 groups
          • sudo chown -R hadoop /opt
          • sudo chgrp -R hadoop /opt
        • 安装openssh-server,linuxmint默认应该是没有装过的.   sudo apt-get install openssh-server
        • 关闭防火墙    sudo ufw disable
        • 查看防火墙状态  sudo ufw status   inactive
        • 安装vim, sudo apt-get install vim
        • 修改hostname(三台机器的hostname最好不一样,比如我是master-hadoop,slave1-hadoop,slave2-hadoop,为了好区分)
          • Debian系: vi /etc/hostname 
          • Redhat系: vi /etc/sysconfig/network
          • 重启
        • 安装JDK
          • 用 MobaXterm 连接到虚拟机(自己查看一下IP,第一台应该是192.168.56.101)
          • 创建lib目录用来存放一些会用到的组建,比如jdk
            • mkdir /opt/lib
          • 把下载的jdk上传到/opt/lib中(用MX直接可以拖放进去)
          • 解压jdk  tar -zxvf jdk-8u92-linux-x64.tar.gz
          • mv jdk1.8.0_92 jdk8   重命名一下文件夹名称 
          • 看一下现在的目录结构,注意下own和grp 都是hadoop(也可以不是hadoop,但是最好和hadoop相关的文件目录都属于一个组,防止权限不足等情况)
          • hadoop@hadoop-pc / $ cd /opt/
            hadoop@hadoop-pc /opt $ ll
            total 16
            drwxr-xr-x  4 hadoop hadoop 4096 Jul  2 00:33 ./
            drwxr-xr-x 23 root   root   4096 Jul  1 23:23 ../
            drwxr-xr-x  3 hadoop hadoop 4096 Nov 29  2015 firefox/
            drwxr-xr-x  3 hadoop hadoop 4096 Jul  2 01:04 lib/
            hadoop@hadoop-pc /opt $ cd lib/
            hadoop@hadoop-pc /opt/lib $ ll
            total 177156
            drwxr-xr-x 3 hadoop hadoop      4096 Jul  2 01:04 ./
            drwxr-xr-x 4 hadoop hadoop      4096 Jul  2 00:33 ../
            drwxr-xr-x 8 hadoop hadoop      4096 Apr  1 12:20 jdk8/
            -rw-rw-r-- 1 hadoop hadoop 181389058 Jul  2 01:00 jdk-8u92-linux-x64.tar.gz
            hadoop@hadoop-pc /opt/lib $ mkdir package
            hadoop@hadoop-pc /opt/lib $ mv jdk-8u92-linux-x64.tar.gz package/
            hadoop@hadoop-pc /opt/lib $ ll
            total 16
            drwxr-xr-x 4 hadoop hadoop 4096 Jul  2 01:08 ./
            drwxr-xr-x 4 hadoop hadoop 4096 Jul  2 00:33 ../
            drwxr-xr-x 8 hadoop hadoop 4096 Apr  1 12:20 jdk8/
            drwxrwxr-x 2 hadoop hadoop 4096 Jul  2 01:08 package/
            hadoop@hadoop-pc /opt/lib $ cd jdk8/
            hadoop@hadoop-pc /opt/lib/jdk8 $ ll
            total 25916
            drwxr-xr-x 8 hadoop hadoop     4096 Apr  1 12:20 ./
            drwxr-xr-x 4 hadoop hadoop     4096 Jul  2 01:08 ../
            drwxr-xr-x 2 hadoop hadoop     4096 Apr  1 12:17 bin/
            -r--r--r-- 1 hadoop hadoop     3244 Apr  1 12:17 COPYRIGHT
            drwxr-xr-x 4 hadoop hadoop     4096 Apr  1 12:17 db/
            drwxr-xr-x 3 hadoop hadoop     4096 Apr  1 12:17 include/
            -rwxr-xr-x 1 hadoop hadoop  5090294 Apr  1 11:33 javafx-src.zip*
            drwxr-xr-x 5 hadoop hadoop     4096 Apr  1 12:17 jre/
            drwxr-xr-x 5 hadoop hadoop     4096 Apr  1 12:17 lib/
            -r--r--r-- 1 hadoop hadoop       40 Apr  1 12:17 LICENSE
            drwxr-xr-x 4 hadoop hadoop     4096 Apr  1 12:17 man/
            -r--r--r-- 1 hadoop hadoop      159 Apr  1 12:17 README.html
            -rw-r--r-- 1 hadoop hadoop      525 Apr  1 12:17 release
            -rw-r--r-- 1 hadoop hadoop 21104834 Apr  1 12:17 src.zip
            -rwxr-xr-x 1 hadoop hadoop   110114 Apr  1 11:33 THIRDPARTYLICENSEREADME-JAVAFX.txt*
            -r--r--r-- 1 hadoop hadoop   177094 Apr  1 12:17 THIRDPARTYLICENSEREADME.txt
            hadoop@hadoop-pc /opt/lib/jdk8 $
            
          • 设置JAVA_HOME和环境变量
            # /etc/profile: system-wide .profile file for the Bourne shell (sh(1))
            # and Bourne compatible shells (bash(1), ksh(1), ash(1), ...).
            
            if [ "$PS1" ]; then
              if [ "$BASH" ] && [ "$BASH" != "/bin/sh" ]; then
                # The file bash.bashrc already sets the default PS1.
                # PS1='\h:\w\$ '
                if [ -f /etc/bash.bashrc ]; then
                  . /etc/bash.bashrc
                fi
              else
                if [ "`id -u`" -eq 0 ]; then
                  PS1='# '
                else
                  PS1='$ '
                fi
              fi
            fi
            
            # The default umask is now handled by pam_umask.
            # See pam_umask(8) and /etc/login.defs.
            
            if [ -d /etc/profile.d ]; then
              for i in /etc/profile.d/*.sh; do
                if [ -r $i ]; then
                  . $i
                fi
              done
              unset i
            fi
            #ADD HERE
            JAVA_HOME=/opt/lib/jdk8
            CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
            PATH=$JAVA_HOME/bin:$PATH
            export JAVA_HOME
            export CLASSPATH
            export PATH
            
          • 检查JAVA版本和环境变量
            hadoop@hadoop-pc / $ java -version
            java version "1.8.0_92"
            Java(TM) SE Runtime Environment (build 1.8.0_92-b14)
            Java HotSpot(TM) 64-Bit Server VM (build 25.92-b14, mixed mode)
            hadoop@hadoop-pc / $ echo $JAVA_HOME
            /opt/lib/jdk8
            hadoop@hadoop-pc / $ echo $CLASSPATH
            .:/opt/lib/jdk8/lib/dt.jar:/opt/lib/jdk8/lib/tools.jar
            hadoop@hadoop-pc / $ echo $PATH
            /opt/lib/jdk8/bin:/opt/lib/jdk8/bin:/opt/lib/jdk8/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games
            hadoop@hadoop-pc / $
            
        • 建立几个hadoop需要用的文件夹
          • tmp目录
            • mkdir /opt/hadoop-tmp
          • hdfs目录
            • mkdir /opt/hadoop-dfs
            • name 目录
              • mkdir /opt/hadoop-dfs/name
            • data目录
              • mkdir /opt/hadoop-dfs/data
        • 上传hadoop
          • 用MX把hadoop的压缩包上传到/opt,或者在/opt下 wget  http://mirrors.cnnic.cn/apache/hadoop/common/hadoop-2.7.1/hadoop-2.7.1.tar.gz
          • tar -zxvf hadoop-2.7.1.tar.gz
          • mv hadoop-2.7.1.tar.gz lib/package/ 把压缩包备份到package
          • mv hadoop-2.7.1 hadoop 重命名一下文件夹
        • 修改一下hadoop的配置文件
        • hadoop 的配置文件在/opt/hadoop/etc/hadoop下面
          1. core-site.xml
            • <configuration>
                      <property>
                              <name>fs.defaultFS</name>
                              <value>hdfs://master:9000</value>
                      </property>
                      <property>
                              <name>hadoop.tmp.dir</name>
                              <value>file:/opt/hadoop-tmp</value>
                              <description>Abasefor other temporary directories.</description>
                      </property>
              </configuration>
              
          2. hdfs-site.xml
            • <configuration>
                      <property>
                              <name>dfs.namenode.secondary.http-address</name>
                              <value>master:9001</value>
                      </property>
                      <property>
                              <name>dfs.namenode.name.dir</name>
                              <value>file:/opt/hadoop-dfs/name</value>
                      </property>
                      <property>
                              <name>dfs.datanode.data.dir</name>
                              <value>file:/opt/hadoop-dfs/data</value>
                      </property>
                      <property>
                              <name>dfs.replication</name>
                              <value>3</value>
                      </property>
                      <property>
                              <name>dfs.webhdfs.enabled</name>
                              <value>true</value>
                      </property>
              </configuration>
              
          3. mapred-site.xml 
            • cp mapred-site.xml.template  mapred-site.xml
            • <configuration>
                  <property>
                      <name>mapreduce.framework.name</name>
                      <value>yarn</value>
                  </property>
                  <property>
                      <name>mapreduce.jobhistory.address</name>
                      <value>master:10020</value>
                  </property>
                  <property>
                      <name>mapreduce.jobhistory.webapp.address</name>
                      <value>master:19888</value>
                  </property>
              </configuration>
              
          4. yarn-site.xml
            • <configuration>
                  <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>yarn.resourcemanager.address</name>
                      <value>master:8032</value>
                  </property>
                  <property>
                      <name>yarn.resourcemanager.scheduler.address</name>
                      <value>master:8030</value>
                  </property>
                  <property>
                      <name>yarn.resourcemanager.resource-tracker.address</name>
                      <value>master:8035</value>
                  </property>
                  <property>
                      <name>yarn.resourcemanager.admin.address</name>
                      <value>master:8033</value>
                  </property>
                  <property>
                      <name>yarn.resourcemanager.webapp.address</name>
                      <value>master:8088</value>
                  </property>
              </configuration>
              
          5. slaves
            • slave1
              slave2
          6. hadoop-env.sh
            • 修改JAVA_HOME
              export JAVA_HOME=/opt/lib/jdk8
              
          7. yarn-env.sh
            • 添加JAVA_HOME环境变量
              export JAVA_HOME=/opt/lib/jdk
              
  • 到此第一个虚拟机配置的差不多了,把这个虚拟机拷贝两份(注意是完全复制,并且需要重置mac地址),就有了三台虚拟机,分别为 master,slave1,slave2
    • 修改slave1和slave2的hostname为slave1-hadoop,slave2-hadoop
    • 修改三台机器的hosts
      • 192.168.56.101 master 
        192.168.56.102 slave1 
        192.168.56.103 slave2
    • ip不一定,需要自己看下虚机的ip
  • 配置master可以免密码登录其它两台机器和自己
    • 在master上操作
    • ssh-keygen -t rsa -P '' ,一切都选择默认操作,该输密码输密码
    • ssh-copy-id hadoop@master
    • ssh-copy-id hadoop@slave1
    • ssh-copy-id hadoop@slave2
    • 完成之后测试一下ssh slave1 正常情况下应该不用密码就直接连接到slave1上
      hadoop@master-hadoop ~ $ ssh-keygen -t rsa -P ''
      Generating public/private rsa key pair.
      Enter file in which to save the key (/home/hadoop/.ssh/id_rsa):
      Created directory '/home/hadoop/.ssh'.
      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:
      5c:c9:4c:0c:b6:28:eb:21:b9:6f:db:6e:3f:ee:0d:9a hadoop@master-hadoop
      The key's randomart image is:
      +--[ RSA 2048]----+
      |        oo.      |
      |       o =..     |
      |    . . . =      |
      |   . o . .       |
      |  o o   S        |
      |   + .           |
      |  . .   .        |
      |   ....o.o       |
      |   .o+E++..      |
      +-----------------+
      hadoop@master-hadoop ~ $ ssh-copy-id hadoop@slave1
      The authenticity of host 'slave1 (192.168.56.102)' can't be established.
      ECDSA key fingerprint is d8:fc:32:ed:a7:2c:e1:c7:d7:15:89:b9:f6:97:fb:c3.
      Are you sure you want to continue connecting (yes/no)? yes
      /usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
      /usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
      hadoop@slave1's password:
      
      Number of key(s) added: 1
      
      Now try logging into the machine, with:   "ssh 'hadoop@slave1'"
      and check to make sure that only the key(s) you wanted were added.
      
  • 格式化namenode
    • ./bin/hdfs namenode –format 
  • 启动hadoop验证一下
    • ./sbin/start-all.sh
    • 正常的日志应该是这样:
      hadoop@master-hadoop /opt/hadoop/sbin $ ./start-all.sh
      This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh
      Starting namenodes on [master]
      master: starting namenode, logging to /opt/hadoop/logs/hadoop-hadoop-namenode-master-hadoop.out
      slave1: starting datanode, logging to /opt/hadoop/logs/hadoop-hadoop-datanode-slave1-hadoop.out
      slave2: starting datanode, logging to /opt/hadoop/logs/hadoop-hadoop-datanode-slave2-hadoop.out
      Starting secondary namenodes [master]
      master: starting secondarynamenode, logging to /opt/hadoop/logs/hadoop-hadoop-secondarynamenode-master-hadoop.out
      starting yarn daemons
      starting resourcemanager, logging to /opt/hadoop/logs/yarn-hadoop-resourcemanager-master-hadoop.out
      slave1: starting nodemanager, logging to /opt/hadoop/logs/yarn-hadoop-nodemanager-slave1-hadoop.out
      slave2: starting nodemanager, logging to /opt/hadoop/logs/yarn-hadoop-nodemanager-slave2-hadoop.out
      
    • 看下三个节点的jps
      hadoop@master-hadoop /opt/hadoop/sbin $ jps
      5858 ResourceManager
      5706 SecondaryNameNode
      5514 NameNode
      6108 Jps
      
      
      hadoop@slave2-hadoop ~ $ jps
      3796 Jps
      3621 NodeManager
      3510 DataNode
      
      
      hadoop@slave1-hadoop ~ $ jps
      3786 Jps
      3646 NodeManager
      3535 DataNode
      
  • 一切正常,安装完毕

 

 





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