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實作六 Lab6

Hadoop 叢集示範 (兩台 Linux)
Hadoop Cluster in Full Distributed Mode

• 假設您申請到的第一台 easycloud VM 的 IP 是 192.168.125.1 ，也已經跑了 lab002/hadoop-full-mode
• 讓我們再申請第2台，並且執行 lab000 跟 lab002。

  ~$ su -
  ~# locale-gen zh_TW.UTF-8
  ~# echo "nameserver 8.8.8.8" >> /etc/resolv.conf
  ~# apt-get update
  ~# apt-get -y install git
  ~# git clone https://github.com/jazzwang/hadoop_labs.git
  ~# cd hadoop_labs
  ~/hadoop_labs# lab000/hadoop-local-mode
  ~/hadoop_labs# lab002/hadoop-full-mode
  ~/hadoop_labs# lab000/hadoop-local-mode
  ~/hadoop_labs# cd
  ~# cp -R hadoop/conf.full hadoop/conf.new
  ~# rm hadoop/conf
  ~# ln -s ~/hadoop/conf.new ~/hadoop/conf
  ~# rm -rf ~/hadoop/var/
  ~# sed -i "s#$(hostname)#192.168.125.1#g" ~/hadoop/conf/core-site.xml
  ~# sed -i "s#$(hostname)#192.168.125.1#g" ~/hadoop/conf/mapred-site.xml
  ~# source .bashrc
  ~# hadoop-daemon.sh start datanode
  ~# hadoop-daemon.sh start tasktracker
  

• 請回到第1台，觀察 ​http://localhost:50070 跟 ​http://localhost:50030 是否有多一台。