配置ubuntu環(huán)境：
1. 防火墻
》查看防火墻狀態(tài)：sudo ufw status
》關(guān)閉本機(jī)防火墻：控制面板——window防火墻——打開或關(guān)閉windows防火墻——關(guān)閉防火墻
2. jdk和scp
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
安裝winscp,配置虛擬機(jī)的ip和訪問用戶/密碼：
-rw-rw-r-- 1 hadoop hadoop 188157665 Sep 10 05:21 jdk-8u144-linux-i586.tar.gz
hadoop@ubuntu:~/profile/download$ pwd
/home/hadoop/profile/download
》安裝jdk：
root@ubuntu:/home/hadoop/profile/download# tar zxvf? jdk-8u144-linux-i586.tar.gz -C /root/directory/java
》查看安裝情況：
root@ubuntu:~/directory/java# pwd
/root/directory/java
root@ubuntu:~/directory/java# ls
jdk1.8.0_144
》配置環(huán)境變量：
export JAVA_HOME=/root/directory/java/jdk1.8.0_144
export PATH=${JAVA_HOME}/bin:$PATH
》加載及測試：
root@ubuntu:/etc# source profile
root@ubuntu:/etc# java -version
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) Client VM (build 25.144-b01, mixed mode)
3. 搭建偽分布模式
》設(shè)置主機(jī)名稱
sed -i 's/ubuntu/dj/g' /etc/hostname
sudo gedit /etc/hostname
sed -i 's/ubuntu/dj/g' /etc/hosts
sudo gedit /etc/hosts
》下載包：http://www.apache.org/dyn/closer.cgi/hadoop/common/
選擇下載:http://mirrors.hust.edu.cn/apache/hadoop/common/hadoop-2.7.4/hadoop-2.7.4.tar.gz
tar -zxvf? /home/hadoop/profile/download/hadoop-2.7.4.tar.gz-C /root/directory/
》設(shè)置環(huán)境變量：
vi ~/.bash_profile
export HADOOP_HOME=/root/directory/hadoop-2.7.4
export PATH=$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$PATH
》加載環(huán)境變量：
source ~/.bash_profile
》配置 hadoop-env.sh
export JAVA_HOME=/root/directory/java/jdk1.8.0_144
配置hdfs-site.xml
配置core-site.xml:
配置mapred-site.xml:
cp? mapred-site.xml.template mapred-site.xml
vi mapred-site.xml
配置yarn-site.xml
對hdfs進(jìn)行格式化：hdfs namenode -format
啟動hdfs和yarn：start-all.sh
查看進(jìn)程：
root@dj:~/directory/hadoop-2.7.4/sbin# jps
3890 ResourceManager
2837 NameNode
3142 SecondaryNameNode
2957 DataNode
4013 NodeManager
4045 Jps
查看頁面：
后臺日志報錯：
doesn't satisfy minimum allocations, Sending SHUTDOWN signal to the NodeManager.
修改配置文件；
yarn-site.xml
配置host：vi /etc/hosts
添加：192.168.1.119? dj
修改配置：
core-site.xml
yarn-site.xml
配置免秘鑰登陸：
ssh-keygen -t rsa
ssh-copy-id -i .ssh/id_rsa.pub root@dj
檢測免秘鑰是否成功：start-all.sh
root@dj:~# jps
2980 DataNode
3527 Jps
2857 NameNode
3353 ResourceManager
3162 SecondaryNameNode
3483 NodeManager
root@dj:~#
無需輸入密碼，登陸成功
