Hadoop-2.5.1集群安装配置笔记
Hadoop-2.5.1集群安装配置笔记1.环境
1.1.虚拟机
准备3台虚拟机，安装Centos 64-bit操作系统，采用最小安装。
（本来想多跑几台虚拟机，但本人笔记本电脑内存有限，最多只能同时跑3个虚拟机）
虚拟机一律配置静态IP地址，配置域名解析，各虚拟机时间同步。
192.168.17.100 nameNode
192.168.17.101 dataNode1
192.168.17.102 dataNode2
2.安装
2.1.安装前
2.1.1.安装wget和ssh
用于下载和ssh登录
view plaincopyhttps://code.csdn.net/assets/CODE_ico.pnghttps://code.csdn.net/assets/ico_fork.svg
[*] yum -y install wget
[*]
[*] yum -y install openssh*
2.1.2.安装JDK、配置环境变量
略...
2.1.3.配置ssh公钥密钥自动登录
在hadoop集群环境中，nameNode节点，需要能够ssh无密码登录访问dataNode节点
进入SSH目录：
view plaincopyhttps://code.csdn.net/assets/CODE_ico.pnghttps://code.csdn.net/assets/ico_fork.svg
[*] # cd .ssh
[*] #
生成公钥密钥对：
view plaincopyhttps://code.csdn.net/assets/CODE_ico.pnghttps://code.csdn.net/assets/ico_fork.svg
[*] # ssh-keygen -t rsa
[*] Generating public/private rsa key pair.
[*] Enter file in which to save the key (/root/.ssh/id_rsa):
[*] Enter passphrase (empty for no passphrase):
[*] Enter same passphrase again:
[*] Your identification has been saved in /root/.ssh/id_rsa.
[*] Your public key has been saved in /root/.ssh/id_rsa.pub.
[*] The key fingerprint is:
[*] 98:3c:31:5c:23:21:73:a0:a0:1f:c6:d3:c3:dc:58:32 root@gifer
[*] The key's randomart image is:
[*] +--[ RSA 2048]----+
[*] |. E.=.o |
[*] |.o = @ o . |
[*] |. * * = |
[*] | o o o = |
[*] |. = S |
[*] | . |
[*] | |
[*] | |
[*] | |
[*] +-----------------+
看到图形输出，表示密钥生成成功，目录下多出两个文件
私钥文件：id_raa
公钥文件：id_rsa.pub
将公钥文件id_rsa.pub内容放到authorized_keys文件中：
[*] cat id_rsa.pub >> authorized_keys
将公钥文件authorized_keys分发到各dataNode节点：
[*] scp authorized_keysroot@dataNode:/root/.ssh/
验证ssh无密码登录：
[*] # ssh root@dataNode1
[*] Last login: Sun Sep 21 11:38:05 2014 from 192.168.17.1
看到以上输出，表示配置成功！如果还提示需要输出密码访问，表示配置失败！
2.2.开始安装
下载最新版本hadoop-2.5.1
[*] wget http://mirrors.hust.edu.cn/apache/hadoop/common/hadoop-2.5.1/hadoop-2.5.1.tar.gz
解压
[*] tar -zxf hadoop-2.5.1.tar.gz
2.3.配置文件
进入配置文件目录：cd hadoop-2.5.1/etc/hadoop
2.3.1.core-site.xml
view plaincopyhttps://code.csdn.net/assets/CODE_ico.pnghttps://code.csdn.net/assets/ico_fork.svg
[*]
[*]
[*] hadoop.tmp.dir
[*] /home/hadoop/tmp
[*] Abase for other temporary directories.
[*]
[*]
[*] fs.defaultFS
[*] hdfs://nameNode:9000
[*]
[*]
[*] io.file.buffer.size
[*] 4096
[*]
[*]
2.3.2.hdfs-site.xml
view plaincopyhttps://code.csdn.net/assets/CODE_ico.pnghttps://code.csdn.net/assets/ico_fork.svg
[*]
[*]
[*] dfs.nameservices
[*] hadoop-cluster1
[*]
[*]
[*] dfs.namenode.secondary.http-address
[*] nameNode:50090
[*]
[*]
[*] dfs.namenode.name.dir
[*] file:///home/hadoop/dfs/name
[*]
[*]
[*] dfs.datanode.data.dir
[*] file:///home/hadoop/dfs/data
[*]
[*]
[*] dfs.replication
[*] 2
[*]
[*]
[*] dfs.webhdfs.enabled
[*] true
[*]
[*]
2.3.3.mapred-site.xml
[*]
[*]
[*] mapreduce.framework.name
[*] yarn
[*]
[*]
[*] mapreduce.jobtracker.http.address
[*] nameNode:50030
[*]
[*]
[*] mapreduce.jobhistory.address
[*] nameNode:10020
[*]
[*]
[*] mapreduce.jobhistory.webapp.address
[*] nameNode:19888
[*]
[*]
2.3.4.yarn-site.xml
view plaincopyhttps://code.csdn.net/assets/CODE_ico.pnghttps://code.csdn.net/assets/ico_fork.svg
[*]
[*]
[*]
[*]
[*] yarn.nodemanager.aux-services
[*] mapreduce_shuffle
[*]
[*]
[*] yarn.resourcemanager.address
[*] nameNode:8032
[*]
[*]
[*] yarn.resourcemanager.scheduler.address
[*] nameNode:8030
[*]
[*]
[*] yarn.resourcemanager.resource-tracker.address
[*] nameNode:8031
[*]
[*]
[*] yarn.resourcemanager.admin.address
[*] nameNode:8033
[*]
[*]
[*] yarn.resourcemanager.webapp.address
[*] nameNode:8088
[*]
[*]
2.3.5.slaves
[*] dataNode1
[*] dataNode2
2.3.6.修改JAVA_HOME
分别在文件hadoop-env.sh和yarn-env.sh中添加JAVA_HOME配置
vi hadoop-env.sh
[*] export JAVA_HOME=/usr/java/jdk1.7.0_65
vi yarn-env.sh
[*] export JAVA_HOME=/usr/java/jdk1.7.0_652.4.格式化文件系统
格式化文件系统：
[*] bin/hdfs namenode -format
2.5.启动、停止服务
现在可以启动服务了
2.5.1.启动
[*] # ./start-dfs.sh
[*] # ./start-yarn.sh
2.5.2.停止
[*] # ./stop-dfs.sh
[*] # ./stop-yarn.sh
3.验证
3.1.查看启动的进程
[*] # jps
[*] 7854 Jps
[*] 7594 ResourceManager
[*] 7357 NameNode
3.2.通过浏览器访问
http://192.168.17.100:50070/
http://img.blog.csdn.net/20140922213112359?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvZ3JlZW5zdXJmZXI=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
http://192.168.17.100:8088/
http://img.blog.csdn.net/20140922213309023?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvZ3JlZW5zdXJmZXI=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
页:
[1]