Hadoop平台搭建方案.rar_hadoop_系统设计方案下载-pudn.com

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/624f2f4674bc5c01052706d3/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/624f2f4674bc5c01052706d3/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x2 h3 y3 ff2 fs1 fc0 sc0 ls0 ws0">Ha<span class="_ _0"></span>doop<span class="_ _1"> </span><span class="ff3 sc1">平台搭<span class="_ _2"></span>建方案</span> </div><div class="t m0 x1 h2 y4 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y5 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y6 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y7 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y9 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h4 ya ff1 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h4 yb ff1 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h4 yc ff1 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 x4 h4 yd ff1 fs2 fc0 sc0 ls0 ws0"> <span class="_ _3"> </span> </div><div class="t m0 x4 h4 ye ff1 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 x4 h4 yf ff1 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 x4 h4 y10 ff1 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y11 ff1 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h4 y12 ff1 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y13 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y14 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y15 ff1 fs0 fc0 sc0 ls0 ws0"> </div></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div> </body> </html>

<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/624f2f4674bc5c01052706d3/bg2.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h5 y16 ff3 fs3 fc0 sc1 ls0 ws0">一、<span class="ff2 sc0">Hadoop<span class="_"> </span></span>简介<span class="ff2 sc0"> </span></div><div class="t m0 x5 h6 y17 ff1 fs4 fc0 sc0 ls0 ws0">Hadoop<span class="_ _4"> </span><span class="ff3">是<span class="_ _4"> </span></span>Apach<span class="_ _0"></span>e<span class="_ _4"> </span><span class="ff3">软件基金会旗下的一个开源分布式计算平台。以<span class="_ _4"> </span></span>Ha<span class="_ _0"></span>doop</div><div class="t m0 x3 h6 y18 ff3 fs4 fc0 sc0 ls0 ws0">分布式文件系统（<span class="ff1">HDFS</span>，<span class="ff1">Ha<span class="_ _0"></span>doop <span class="_ _2"></span>Distribut<span class="_ _0"></span>ed F<span class="_ _5"></span>iles<span class="_ _0"></span>y<span class="_ _0"></span>stem<span class="ff3">）和<span class="_ _6"> </span></span>MapR<span class="_ _0"></span>educ<span class="_ _0"></span>e<span class="ff3">（</span>Google </span></div><div class="t m0 x3 h6 y19 ff1 fs4 fc0 sc0 ls0 ws0">MapRe<span class="_ _0"></span>duce<span class="_ _6"> </span><span class="ff3">的开源实现）<span class="_ _7"></span>为核心的<span class="_ _6"> </span><span class="ff1">Hadoop<span class="_ _6"> </span></span>为用户提供了系统底层细节透明的分</span></div><div class="t m0 x3 h6 y1a ff3 fs4 fc0 sc0 ls0 ws0">布式基础架构。<span class="ff1"> </span></div><div class="t m0 x5 h6 y1b ff3 fs4 fc0 sc0 ls0 ws0">对于<span class="_ _6"> </span><span class="ff4">Hadoop<span class="_ _6"> </span></span>的集群来讲，<span class="_ _8"></span>可以分成两大类角色：<span class="_ _8"></span><span class="ff4">Master<span class="_ _6"> </span><span class="ff3">和<span class="_ _6"> </span></span>Salve<span class="ff3">。<span class="_ _8"></span>一个<span class="_ _6"> </span><span class="ff4">HDFS</span></span></span></div><div class="t m0 x3 h6 y1c ff3 fs4 fc0 sc0 ls0 ws0">集群是由一个<span class="_ _6"> </span><span class="ff4">NameNode<span class="_ _4"> </span></span>和若干个<span class="_ _6"> </span><span class="ff4">DataNode<span class="_ _9"> </span></span>组成的。其中<span class="_ _9"> </span><span class="ff4">NameNode<span class="_ _9"> </span></span>作为主服务</div><div class="t m0 x3 h6 y1d ff3 fs4 fc0 sc0 ls0 ws0">器<span class="_ _a"></span>，<span class="_ _a"></span>管<span class="_ _a"></span>理<span class="_ _a"></span>文<span class="_ _a"></span>件<span class="_ _a"></span>系<span class="_ _a"></span>统<span class="_ _b"></span>的<span class="_ _a"></span>命<span class="_ _a"></span>名<span class="_ _a"></span>空<span class="_ _a"></span>间<span class="_ _a"></span>和<span class="_ _b"></span>客<span class="_ _a"></span>户<span class="_ _a"></span>端<span class="_ _a"></span>对<span class="_ _a"></span>文<span class="_ _a"></span>件<span class="_ _a"></span>系<span class="_ _b"></span>统<span class="_ _a"></span>的<span class="_ _a"></span>访<span class="_ _a"></span>问<span class="_ _a"></span>操<span class="_ _a"></span>作<span class="_ _b"></span>；<span class="_ _a"></span>集<span class="_ _a"></span>群<span class="_ _a"></span>中<span class="_ _a"></span>的</div><div class="t m0 x3 h6 y1e ff4 fs4 fc0 sc0 ls0 ws0">DataNode<span class="_ _1"> </span><span class="ff3">管<span class="_ _5"></span>理<span class="_ _5"></span>存<span class="_ _2"></span>储<span class="_ _5"></span>的<span class="_ _5"></span>数<span class="_ _5"></span>据<span class="_ _2"></span>。<span class="_ _5"></span></span>MapReduc<span class="_ _2"></span>e<span class="_ _1"> </span><span class="ff3">框<span class="_ _5"></span>架<span class="_ _5"></span>是<span class="_ _2"></span>由<span class="_ _5"></span>一<span class="_ _5"></span>个<span class="_ _5"></span>单<span class="_ _2"></span>独<span class="_ _5"></span>运<span class="_ _5"></span>行<span class="_ _5"></span>在<span class="_ _2"></span>主<span class="_ _5"></span>节<span class="_ _5"></span>点<span class="_ _2"></span>上<span class="_ _5"></span>的</span></div><div class="t m0 x3 h6 y1f ff4 fs4 fc0 sc0 ls0 ws0">JobTracker<span class="_ _c"> </span><span class="ff3">和运行在每个集群从节点的<span class="_ _c"> </span></span>TaskTracker<span class="_ _c"> </span><span class="ff3">共同组成的。主节点负责</span></div><div class="t m0 x3 h6 y20 ff3 fs4 fc0 sc0 ls0 ws0">调度构成一个作业的所<span class="_ _2"></span>有任<span class="ff4"> </span>务，这些<span class="_ _2"></span>任务分布在不同的从节<span class="_ _2"></span>点上。主节点监控</div><div class="t m0 x3 h6 y21 ff3 fs4 fc0 sc0 ls0 ws0">它们的执行情况，<span class="_ _7"></span>并且重新执行之前的失败任务；<span class="_ _d"></span>从节点仅负责由主节点指派的</div><div class="t m0 x3 h6 y22 ff3 fs4 fc0 sc0 ls0 ws0">任务。<span class="_ _e"></span>当一个<span class="_ _6"> </span><span class="ff4">Job<span class="_ _6"> </span></span>被提交<span class="ff4"> </span>时，<span class="_ _e"></span><span class="ff4">JobTracker<span class="_ _6"> </span><span class="ff3">接收到提交作业和配置信息之后，<span class="_ _e"></span>就</span></span></div><div class="t m0 x3 h6 y23 ff3 fs4 fc0 sc0 ls0 ws0">会将配置信息等分发给从节点，同时调度任务并监控<span class="_ _6"> </span><span class="ff4">TaskTracker<span class="_ _6"> </span></span>的执行。<span class="ff4"> </span></div><div class="t m0 x5 h6 y24 ff3 fs4 fc0 sc0 ls0 ws0">从上面的介绍可以看出，<span class="_ _f"></span><span class="ff4">HDFS<span class="_ _6"> </span><span class="ff3">和<span class="_ _6"> </span></span>MapReduce<span class="_ _6"> </span><span class="ff3">共同组成了<span class="_ _6"> </span></span>Hadoop<span class="_ _6"> </span><span class="ff3">分布式系统</span></span></div><div class="t m0 x3 h6 y25 ff3 fs4 fc0 sc0 ls0 ws0">体系结构的核心。<span class="_ _d"></span><span class="ff4">HDFS<span class="_ _6"> </span><span class="ff3">在集群上实现分布式文件系统，<span class="_ _7"></span><span class="ff4">MapReduce<span class="_ _6"> </span><span class="ff3">在集群上实现</span></span></span></span></div><div class="t m0 x3 h6 y26 ff3 fs4 fc0 sc0 ls0 ws0">了分布式计算和任务处理。<span class="ff4">HDFS<span class="_ _c"> </span></span>在<span class="_ _c"> </span><span class="ff4">MapReduce<span class="_ _c"> </span></span>任务处理过程中提供了文件操作</div><div class="t m0 x3 h6 y27 ff3 fs4 fc0 sc0 ls0 ws0">和存储等支持，<span class="ff4">MapReduce<span class="_ _c"> </span></span>在<span class="_ _c"> </span><span class="ff4">HDFS<span class="_ _c"> </span></span>的基础上实现了任务的分发、跟踪、执行等</div><div class="t m0 x3 h6 y28 ff3 fs4 fc0 sc0 ls0 ws0">工作，并收集结果，二者相互作用，完成了<span class="_ _6"> </span><span class="ff4">Hadoop<span class="_ _6"> </span></span>分布式集群的主要任务。<span class="ff4"> </span></div><div class="t m0 x3 h5 y29 ff3 fs3 fc0 sc1 ls0 ws0">二、系统安装及日常维护<span class="_ _2"></span>须知<span class="ff4"> </span></div><div class="t m0 x6 h6 y2a ff4 fs4 fc0 sc0 ls0 ws0"> <span class="ff3">服务器型号：</span>IBM X3850 X5 </div><div class="t m0 x6 h6 y2b ff4 fs4 fc0 sc1 ls1 ws0">1.<span class="ff3 ls0">平时操作注意事项：<span class="_ _2"></span><span class="ff4"> </span></span></div><div class="t m0 x6 h6 y2c ff3 fs4 fc0 sc0 ls0 ws0">机器上安装的有<span class="_ _6"> </span><span class="ff4">CentOS_6.4_64<span class="_ _6"> </span></span>位操作系统和<span class="_ _6"> </span><span class="ff4">Windows <span class="_ _e"></span>server <span class="_ _10"></span>2000<span class="_ _6"> </span><span class="ff3">操作系</span></span></div><div class="t m0 x3 h6 y2d ff3 fs4 fc0 sc0 ls0 ws0">统。<span class="ff4"> </span></div><div class="t m0 x6 h6 y2e ff3 fs4 fc0 sc0 ls0 ws0">当重新启动时，<span class="_ _e"></span>想进入<span class="_ _6"> </span><span class="ff4">CentOS<span class="_ _6"> </span></span>系统，<span class="_ _e"></span>需要先插上<span class="_ _6"> </span><span class="ff4">CentOS<span class="_ _6"> </span></span>的<span class="_ _6"> </span><span class="ff4">U<span class="_ _6"> </span></span>盘启动盘，<span class="_ _e"></span>然</div><div class="t m0 x3 h6 y2f ff3 fs4 fc0 sc0 ls0 ws0">后<span class="_ _6"> </span><span class="ff4">F12<span class="_ _6"> </span></span>选择从<span class="_ _6"> </span><span class="ff4">USB<span class="_ _6"> </span></span>设备启动，系统就会自动进入<span class="_ _6"> </span><span class="ff4">CentOS<span class="_ _6"> </span></span>系统。<span class="ff4"> </span></div><div class="t m0 x6 h6 y30 ff3 fs4 fc0 sc0 ls0 ws0">若不插<span class="_ _9"> </span><span class="ff4">U<span class="_ _4"> </span></span>盘启动盘，系统将会自动进入机器上原来的<span class="_ _9"> </span><span class="ff4">windows server 2000</span></div><div class="t m0 x3 h6 y31 ff3 fs4 fc0 sc0 ls0 ws0">系统。不会像普通个人计算机那样出现操作系统选择的界面。<span class="ff4"> </span></div><div class="t m0 x6 h6 y32 ff4 fs4 fc0 sc1 ls0 ws0">2.U<span class="_ _9"> </span><span class="ff3">盘启动盘制作方式：<span class="_ _2"></span></span> </div><div class="t m0 x6 h6 y33 ff3 fs4 fc0 sc0 ls0 ws0">由于此服务器不支持<span class="_ _4"> </span><span class="ff4">CentOS<span class="_ _9"> </span></span>的系统引导，安装的时候不识别<span class="_ _4"> </span><span class="ff4">CentOS6.4_64</span></div><div class="t m0 x3 h6 y34 ff3 fs4 fc0 sc0 ls0 ws0">位系统光盘。<span class="_ _f"></span>于是采用将系统镜像写入<span class="_ _6"> </span><span class="ff4">U<span class="_ _6"> </span></span>盘，<span class="_ _f"></span>做成<span class="_ _9"> </span><span class="ff4">U<span class="_ _6"> </span></span>盘启动盘，<span class="_ _f"></span>制作<span class="_ _6"> </span><span class="ff4">U<span class="_ _6"> </span></span>盘时选择</div><div class="t m0 x3 h6 y35 ff3 fs4 fc0 sc0 ls0 ws0">写入新的主硬盘引导记录<span class="ff4">(MBR)</span>。<span class="_ _f"></span>这样，<span class="_ _f"></span>安装的时候插入<span class="_ _6"> </span><span class="ff4">U<span class="_ _6"> </span></span>盘，<span class="_ _11"></span>选择从<span class="_ _6"> </span><span class="ff4">U<span class="_ _6"> </span></span>盘启动，</div><div class="t m0 x3 h6 y36 ff3 fs4 fc0 sc0 ls0 ws0">便可通过<span class="_ _6"> </span><span class="ff4">U<span class="_ _9"> </span></span>盘引导进入<span class="_ _4"> </span><span class="ff4">CentOS<span class="_ _6"> </span></span>系统的安装界面，之后也可以选择从<span class="_ _9"> </span><span class="ff4">U<span class="_ _9"> </span></span>盘安装也</div><div class="t m0 x3 h6 y37 ff3 fs4 fc0 sc0 ls0 ws0">可选择从光驱安装系统。<span class="ff4"> </span></div><div class="t m0 x6 h6 y38 ff3 fs4 fc0 sc1 ls0 ws0">制作步骤：<span class="ff4"> </span></div><div class="t m0 x6 h6 y39 ff3 fs4 fc0 sc0 ls0 ws0">用软碟通，先选定<span class="_ _12"> </span><span class="ff4">CentOS<span class="_ _12"> </span></span>系统镜像，然后点菜单栏启动选项，点写入硬盘</div></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div>

<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/624f2f4674bc5c01052706d3/bg3.jpg"><div class="t m0 x3 h6 y3a ff3 fs4 fc0 sc0 ls2 ws0">映像，写入方式<span class="_ _13"> </span><span class="ff4 ls0">USB-HDD+,<span class="_ _a"></span><span class="ff3">便<span class="_ _a"></span>捷<span class="_ _a"></span>启<span class="_ _a"></span>动<span class="_ _a"></span>选<span class="_ _a"></span>择<span class="_ _a"></span>写<span class="_ _b"></span>入<span class="_ _a"></span>新<span class="_ _a"></span>的<span class="_ _a"></span>主<span class="_ _a"></span>硬<span class="_ _a"></span>盘<span class="_ _a"></span>引<span class="_ _a"></span>导<span class="_ _a"></span>记<span class="_ _a"></span>录<span class="_ _b"></span></span>(MBR)<span class="_ _a"></span><span class="ff3">，</span></span></div><div class="t m0 x3 h6 y3b ff4 fs4 fc0 sc0 ls0 ws0">USB-HDD+<span class="ff3">。写盘结束后进入<span class="_ _14"> </span></span>U<span class="_ _14"> </span><span class="ff3">盘启动盘，进入<span class="_ _14"> </span></span>EFI<span class="_ _14"> </span><span class="ff3">文件夹，删除</span> BOOTX64.efi</div><div class="t m0 x3 h6 y3c ff3 fs4 fc0 sc0 ls0 ws0">文件<span class="ff4">(</span><span class="sc1 ls1">重要</span>，见<span class="ff4"> </span><span class="sc1">注</span><span class="ff4">.)</span>。至此，<span class="ff4">U<span class="_ _6"> </span></span>盘启动盘制作<span class="_ _6"> </span><span class="ff4">OK</span>。<span class="ff4"> </span></div><div class="t m0 x6 h6 y3d ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h6 y3e ff3 fs4 fc0 sc1 ls1 ws0">注：<span class="sc0 ls0">之所以要删除<span class="ff4"> BOOTX64.efi<span class="_ _9"> </span></span>文件，是因为<span class="_ _9"> </span><span class="ff4">CentOS_6.4<span class="_ _4"> </span></span>操作系统对磁盘</span></div><div class="t m0 x3 h6 y3f ff3 fs4 fc0 sc0 ls0 ws0">的管理采用<span class="_ _6"> </span><span class="ff4">GPT</span>（<span class="ff4">GUID Partition Table</span>，全局唯一标识分区表，缩写：<span class="ff4">GPT</span><span class="ls3">），</span></div><div class="t m0 x3 h6 y40 ff3 fs4 fc0 sc0 ls0 ws0">它是一个实体硬盘的分区结构。<span class="_ _10"></span>它是<span class="_ _6"> </span><span class="ff4">EFI(</span>可扩展固件接口标准<span class="ff4">)</span>的一部分，<span class="_ _e"></span>用来</div><div class="t m0 x3 h6 y41 ff3 fs4 fc0 sc0 ls0 ws0">替代<span class="_ _6"> </span><span class="ff4">BIOS<span class="_ _9"> </span></span>中的主引导记录分区表。因为<span class="_ _4"> </span><span class="ff4">MBR<span class="_ _6"> </span></span>分区表不支持容量大于<span class="_ _9"> </span><span class="ff4">2.2TB<span class="_ _9"> </span></span>的分</div><div class="t m0 x3 h6 y42 ff3 fs4 fc0 sc0 ls0 ws0">区，所以也有一些<span class="_ _6"> </span><span class="ff4">BIOS<span class="_ _4"> </span></span>系统为了支持大容量硬盘而用<span class="_ _6"> </span><span class="ff4">GPT<span class="_ _9"> </span></span>分区表取代<span class="_ _9"> </span><span class="ff4">MBR<span class="_ _9"> </span></span>分区</div><div class="t m0 x3 h6 y43 ff3 fs4 fc0 sc0 ls0 ws0">表<span class="_ _15"> </span>。<span class="_ _16"> </span>（<span class="_ _15"> </span><span class="ff4">MBR<span class="_ _17"> </span></span>和<span class="_ _17"> </span><span class="ff4">GPT<span class="_ _17"> </span></span>的<span class="_ _15"> </span>详<span class="_ _15"> </span>细<span class="_ _15"> </span>区<span class="_ _15"> </span>分<span class="_ _15"> </span>参<span class="_ _15"> </span>看<span class="_ _15"> </span>链<span class="_ _15"> </span>接<span class="ff4"> </span></div><div class="t m0 x3 h6 y44 ff4 fs4 fc0 sc0 ls0 ws0">http://dngood.blog.51cto.com/446195/647702/ <span class="ff3">）</span> </div><div class="t m0 x6 h6 y45 ff4 fs4 fc0 sc0 ls0 ws0"> <span class="_ _15"> </span><span class="ff3">此系统便采用了<span class="_ _3"> </span></span>GPT<span class="_ _c"> </span><span class="ff3">分区表，但我们服务器的磁盘还没有超过<span class="_ _c"> </span></span>2.2TB<span class="ff3">，</span></div><div class="t m0 x3 h6 y46 ff3 fs4 fc0 sc0 ls0 ws0">并且考虑到这台服务器上原先安装<span class="_ _6"> </span><span class="ff4">windows<span class="_ _6"> </span></span>系统时已经采用<span class="_ _6"> </span><span class="ff4">MBR</span>，<span class="_ _f"></span>并且不想删除</div><div class="t m0 x3 h6 y47 ff3 fs4 fc0 sc0 ls0 ws0">该系统，<span class="_ _10"></span>所以仍要使用<span class="_ _6"> </span><span class="ff4">MBR</span>，<span class="_ _e"></span>所以在制作<span class="_ _6"> </span><span class="ff4">U<span class="_ _6"> </span></span>盘启动盘的时候把<span class="_ _6"> </span><span class="ff4">BOOTX64.efi<span class="_ _6"> </span></span>文件</div><div class="t m0 x3 h6 y48 ff3 fs4 fc0 sc0 ls0 ws0">删除，<span class="_ _f"></span>来拒绝使用<span class="_ _6"> </span><span class="ff4">GPT<span class="_ _6"> </span></span>分区表。<span class="_ _f"></span>若不删除，<span class="_ _11"></span>安装过程中分区的时候会提示你采用</div><div class="t m0 x3 h6 y49 ff4 fs4 fc0 sc0 ls0 ws0">GPT<span class="_ _6"> </span><span class="ff3">分区，这将会丢失磁盘上的原有内容。所以采取此措施。</span> </div><div class="t m0 x3 h5 y4a ff3 fs3 fc0 sc1 ls0 ws0">三、平台支持及环境说明<span class="ff2 sc0"> </span></div><div class="t m0 x6 h6 y4b ff2 fs4 fc0 sc0 ls4 ws0">1.<span class="ff3 sc1 ls0">平台环境</span><span class="ls0"> </span></div><div class="t m0 x6 h6 y4c ff1 fs4 fc0 sc0 ls0 ws0">CentOS 6.4 Linux<span class="_"> </span><span class="ff3">操作系统；</span> </div><div class="t m0 x6 h7 y4d ff1 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h6 y25 ff1 fs4 fc0 sc0 ls0 ws0">(<span class="ff3">平台硬件详细要求待考究</span><span class="ls5">...)</span> </div><div class="t m0 x6 h7 y4e ff1 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x6 h6 y4f ff1 fs4 fc0 sc0 ls0 ws0">JA<span class="_ _e"></span>V<span class="_ _e"></span>A<span class="_"> </span><span class="ff3">环境：</span>JD<span class="_ _2"></span>K1.7.0_25<span class="ff3">；</span> </div><div class="t m0 x6 h6 y50 ff1 fs4 fc0 sc0 ls6 ws0">SSH<span class="ff3 ls0">；<span class="ff1"> </span></span></div><div class="t m0 x6 h6 y51 ff1 fs4 fc0 sc0 ls0 ws0">Hadoop-1.2.1<span class="ff3">；</span> </div><div class="t m0 x6 h6 y52 ff2 fs4 fc0 sc0 ls4 ws0">2.<span class="ff3 sc1 ls0">集群说明</span><span class="ls0"> </span></div><div class="t m0 x6 h6 y53 ff3 fs4 fc0 sc0 ls0 ws0">示例集群中包括<span class="_ _4"> </span><span class="ff4">3<span class="_ _9"> </span></span>个节点：<span class="ff4">1<span class="_ _4"> </span></span>个<span class="_ _4"> </span><span class="ff4">Master</span>，<span class="ff4">3<span class="_ _4"> </span></span>个<span class="_ _9"> </span><span class="ff4">Salve(</span>默认是<span class="_ _4"> </span><span class="ff4">3<span class="_ _4"> </span></span>个<span class="ff4">)</span>，节点之</div><div class="t m0 x3 h6 y54 ff3 fs4 fc0 sc0 ls0 ws0">间局域网连接，可以相互<span class="_ _6"> </span><span class="ff4">ping<span class="_ _6"> </span></span>通。<span class="ff4"> </span></div><div class="t m0 x6 h6 y55 ff3 fs4 fc0 sc0 ls0 ws0">机器名称和对应的<span class="_ _6"> </span><span class="ff4">IP<span class="_ _6"> </span></span>地址：<span class="ff4"> </span></div><div class="t m0 x6 h6 y56 ff4 fs4 fc0 sc0 ls0 ws0">Master 192.168.1.212 </div><div class="t m0 x6 h6 y57 ff4 fs4 fc0 sc0 ls0 ws0">Slave1 192.168.1.230 </div><div class="t m0 x6 h6 y58 ff4 fs4 fc0 sc0 ls0 ws0">Slave2 192.168.1.233 </div><div class="t m0 x6 h6 y59 ff4 fs4 fc0 sc0 ls0 ws0">Slave3 192.168.1.250 </div><div class="t m0 x6 h6 y5a ff3 fs4 fc0 sc0 ls0 ws0">两个节点上均是<span class="_ _6"> </span><span class="ff4">CentOS<span class="_ _6"> </span></span>系统，<span class="_ _10"></span>并且有一个相同的用户<span class="_ _6"> </span><span class="ff4">hadoop</span>。<span class="_ _e"></span><span class="ff4">Master<span class="_ _6"> </span><span class="ff3">机器</span></span></div><div class="t m0 x3 h6 y5b ff3 fs4 fc0 sc0 ls0 ws0">主要配置<span class="_ _6"> </span><span class="ff4">NameNode<span class="_ _6"> </span></span>和<span class="_ _6"> </span><span class="ff4">JobTracker<span class="_ _6"> </span></span>的角色，<span class="_ _8"></span>负责总管分布式数据和分解任务的执</div><div class="t m0 x3 h6 y5c ff3 fs4 fc0 sc0 ls0 ws0">行；<span class="ff4">3<span class="_ _4"> </span></span>个<span class="_ _4"> </span><span class="ff4">Salve<span class="_ _4"> </span></span>机器配置<span class="_ _9"> </span><span class="ff4">DataNode<span class="_ _4"> </span></span>和<span class="_ _4"> </span><span class="ff4">TaskTracker<span class="_ _4"> </span></span>的角色，负责分布式数据存</div><div class="t m0 x3 h6 y5d ff3 fs4 fc0 sc0 ls0 ws0">储以及任务的执行。<span class="ff4"> </span></div><div class="t m0 x6 h6 y5e ff4 fs4 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h5 y36 ff3 fs3 fc0 sc1 ls0 ws0">四、配置过程<span class="ff4"> </span></div><div class="t m0 x3 h5 y5f ff4 fs3 fc0 sc1 ls0 ws0"> </div><div class="t m0 x6 h6 y60 ff3 fs4 fc0 sc0 ls0 ws0">下<span class="_ _a"></span>面<span class="_ _b"></span>的<span class="_ _b"></span>例<span class="_ _a"></span>子<span class="_ _b"> </span>我<span class="_ _b"></span>们<span class="_ _b"></span>将<span class="_ _b"></span>以<span class="_ _18"> </span><span class="ff4">Master<span class="_ _18"> </span></span>机<span class="_ _a"></span>器<span class="_ _b"></span>为<span class="_ _b"></span>例<span class="_ _b"></span>，<span class="_ _a"></span>即<span class="_ _b"></span>主<span class="_ _b"></span>机<span class="_ _a"></span>名<span class="_ _b"> </span>为<span class="_ _19"> </span><span class="ff4">"Master"<span class="_ _b"></span></span>，<span class="_ _b"></span><span class="ff4">IP<span class="_ _18"> </span></span>为</div></div><div class="pi" data-data='{"ctm":[1.611792,0.000000,0.000000,1.611792,0.000000,0.000000]}'></div></div>