三个节点的Hadoop平台安装搭建教程_如何恢复360云
日期:2016-08-24 / 人气: / 来源:网络
之前介绍过在Ubuntu 12.04单机版环境中搭建hadoop详细教程,今天的教程介绍的是3个节点的Hadoop平台建设。
1. Hadoop节点规划
本次安装规划使用三个节点,每个节点都使用centos系统。
三个节点的hostname分别规划为:centoshadoop1、centoshadoop2、centoshadoop3(此处为本教程参数,可根据实际环境情况修改)
三个节点的ip地址分别规划为:192.168.65.57、192.168.65.58、192.168.65.59(此处为本教程参数,根据实际环境情况修改)
2. 平台搭建使用的软件
下载如下软件
操作系统安装包:Centos6.3_x64
Jdk安装包:jdk-6u37-linux-x64.bin
Hadoop安装包:hadoop-1.1.2.tar.gz
3. 安装centos操作系统(可见centos频道)
安装三个节点的操作系统,安装过程省略。
4. 配置centoshadoop1节点
4.1. 修改节点hostname
[root@localhost ~]# vi /etc/sysconfig/network
HOSTNAME=centoshadoop1
[root@localhost ~]# vi /etc/hosts
……
192.168.65.57 centoshadoop1
192.168.65.58centoshadoop2
192.168.65.59centoshadoop3
[root@localhost ~]#reboot
4.2. 关闭iptables防火墙
[root@centoshadoop1~]#service iptables stop
注意每次操作系统重启后都要操作
4.3. 建立无ssh密码登陆
生成签名文件
[root@centoshadoop1~]#cd /root
[root@centoshadoop1~]#ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa
[root@centoshadoop1~]#cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
[root@centoshadoop1~]#
测试本地SSH无密码登录
[root@centoshadoop1~]#sshcentoshadoop1
4.4. 安装jdk
上传jdk-6u37-linux-x64.bin到/root目录下
[root@centoshadoop1~]#chmod 777 jdk-6u37-linux-x64.bin
[root@centoshadoop1~]#./jdk-6u37-linux-x64.bin
[root@centoshadoop1~]#ll
查看生成jdk-6u37-linux-x64目录
4.5. 安装hadoop软件
上传hadoop-1.1.2.tar.gz到/root目录下
[root@centoshadoop1~]#tar -zvxf hadoop-1.1.2.tar.gz
[root@centoshadoop1~]#ll
查看生成hadoop-1.1.2目录
[root@centoshadoop1~]#vi /conf/core-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://192.168.65.57:9000</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/root/hadoop-1.1.2/tmp</value>
</property>
</configuration>
[root@centoshadoop1~]#vi hdfs-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
</configuration>
[root@centoshadoop1~]#vi mapred-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<property>
<name>mapred.job.tracker</name>
<value>192.168.65.57:9001</value>
</property>
</configuration>
4.6. 配置hadoop数据节点
[root@centoshadoop1~]#vi /root/hadoop-1.1.2/conf/masters
192.168.65.57 #secondaryNameNode
[root@centoshadoop1~]#vi /root/hadoop-1.1.2/conf/slaves
192.168.65.58 #datanode
192.168.65.59 #datanode
4.7. 添加环境变量
[root@centoshadoop1~]#cd /root
[root@centoshadoop1~]#vi /etc/profile
export JAVA_HOME=/root/jdk1.6.0_37
export JRE_HOME=/root/jdk1.6.0_37/jre
export HADOOP_HOME=/root/hadoop-1.1.2
export HADOOP_HOME_WARN_SUPPRESS=1
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$HADOOP_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$HADOOP_HOME/bin:$PATH
[root@centoshadoop1~]#vi ~/.bashrc
export JAVA_HOME=/root/jdk1.6.0_37
export JRE_HOME=/root/jdk1.6.0_37/jre
export HADOOP_HOME=/root/hadoop-1.1.2
export HADOOP_DEV_HOME=/root/hadoop-1.1.2
export HADOOP_COMMON_HOME=/root/hadoop-1.1.2
export HADOOP_HDFS_HOME=/root/hadoop-1.1.2
export HADOOP_CONF_DIR=/root/hadoop-1.1.2/conf
[root@centoshadoop1~]#vi /root/hadoop-1.1.2/conf/hadoop-env.sh
export JAVA_HOME=/root/jdk1.6.0_37
export HADOOP_HOME_WARN_SUPPRESS=1
export HADOOP_CLASSPATH=/root/hadoop-1.1.2:/root/hadoop-1.1.2/lib
5. 配置centoshadoop2节点
5.1. 修改节点hostname
[root@localhost ~]# vi /etc/sysconfig/network
HOSTNAME=centoshadoop2
[root@localhost ~]# vi /etc/hosts
……
192.168.65.57 centoshadoop1
192.168.65.58 centoshadoop2
192.168.65.59 centoshadoop3
[root@localhost ~]#reboot
5.2. 关闭iptables防火墙
[root@centoshadoop1~]#service iptables stop
注意每次操作系统重启后都要操作
5.3. 建立无ssh密码登陆
将centoshadoop1节点上/root/.ssh目录下的authorized_keys、known_hosts 、id_rsa.pub、id_rsa四个文件拷贝到本机的/root/.ssh目录下
5.4. 安装jdk
上传jdk-6u37-linux-x64.bin到/root目录下
[root@centoshadoop1~]#chmod 777 jdk-6u37-linux-x64.bin
[root@centoshadoop1~]#./jdk-6u37-linux-x64.bin
[root@centoshadoop1~]#ll
查看生成jdk-6u37-linux-x64目录
5.5. 安装hadoop软件
上传hadoop-1.1.2.tar.gz到/root目录下
[root@centoshadoop1~]#tar -zvxf hadoop-1.1.2.tar.gz
[root@centoshadoop1~]#ll
查看生成hadoop-1.1.2目录
[root@centoshadoop1~]#vi /conf/core-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://192.168.65.57:9000</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/root/hadoop-1.1.2/tmp</value>
</property>
</configuration>
[root@centoshadoop1~]#vi hdfs-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
</configuration>
[root@centoshadoop1~]#vi mapred-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<property>
<name>mapred.job.tracker</name>
<value>192.168.65.57:9001</value>
</property>
</configuration>
5.6. 添加环境变量
[root@centoshadoop1~]#cd /root
[root@centoshadoop1~]#vi /etc/profile
export JAVA_HOME=/root/jdk1.6.0_37
export JRE_HOME=/root/jdk1.6.0_37/jre
export HADOOP_HOME=/root/hadoop-1.1.2
export HADOOP_HOME_WARN_SUPPRESS=1
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$HADOOP_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$HADOOP_HOME/bin:$PATH
[root@centoshadoop1~]#vi ~/.bashrc
export JAVA_HOME=/root/jdk1.6.0_37
export JRE_HOME=/root/jdk1.6.0_37/jre
export HADOOP_HOME=/root/hadoop-1.1.2
export HADOOP_DEV_HOME=/root/hadoop-1.1.2
export HADOOP_COMMON_HOME=/root/hadoop-1.1.2
export HADOOP_HDFS_HOME=/root/hadoop-1.1.2
export HADOOP_CONF_DIR=/root/hadoop-1.1.2/conf
[root@centoshadoop1~]#vi /root/hadoop-1.1.2/conf/hadoop-env.sh
export JAVA_HOME=/root/jdk1.6.0_37
export HADOOP_HOME_WARN_SUPPRESS=1
export HADOOP_CLASSPATH=/root/hadoop-1.1.2:/root/hadoop-1.1.2/lib
6. 配置centoshadoop3节点
6.1. 修改节点hostname
[root@localhost ~]# vi /etc/sysconfig/network
HOSTNAME=centoshadoop3
[root@localhost ~]# vi /etc/hosts
……
192.168.65.57 centoshadoop1
192.168.65.58 centoshadoop2
192.168.65.59 centoshadoop3
[root@localhost ~]#reboot
关闭iptables防火墙、建立无ssh密码登陆、安装jdk、安装hadoop软件、添加环境变量等操作跟“配置centoshadoop2节点”完全相同
7. 启动运行hadoop平台
7.1. 首先执行格式化
[root@centoshadoop1~]#hadoop namenode –format
注意:core-site.xml、hdfs-site.xml、mapred-site.xml等配置文件变化后都需要执行格式化
7.2. 启动hadoop
[root@centoshadoop1~]#start-all.sh
7.3. 停止hadoop
[root@centoshadoop1~]#stop-all.sh
7.4. 查看hadoop运行状态
查看hadoop启动的进程
[root@centoshadoop1~]#jps
查看hadoop集群状态
[root@centoshadoop1~]#hadoop dfsadmin -report
查看hadoop中的目录情况
[root@centoshadoop1~]#hadoop fs –ls /
Hadoop2.6.0运行mapreduce之推断(speculative)执行(上)
在mapreduce中设计了Speculator接口作为推断执行的统一规范,DefaultSpeculator作为一种服务在实现了Speculator的同时继承了AbstractService,DefaultSpeculator是mapreduce的默认实现。
Hadoop,mapreduce
作者:管理员
推荐内容 Recommended
- 江苏飞浩信息科技期待您的加入07-20
- 江苏飞浩科技欢迎您07-19
相关内容 Related
- 江苏飞浩信息科技期待您的加入07-20
- 江苏飞浩科技欢迎您07-19