hadoop cluster configuration best practices

AC Group: 335671559 Hadoop Cluster Hadoop Cluster Build The IP address of the master computer is assumed to be the 192.168.1.2 slaves2 assumption of the 192.168.1.1 Slaves1 as 192.168.1.3 The user of each machine is Redmap, the Hadoop root directory is:/

Recently, the company has taken over a new project and needs to perform distributed crawling on the entire wireless network of the company. The webpage index is updated and the PR value is calculated. Because the data volume is too large (tens of millions of data records ), you have to perform distributed processing. The new version is ready to adopt the hadoop architecture. The general process of hadoop

Recently using vagrant to build a Hadoop cluster with 3 hosts, using Cloudera Manager to manage it, initially virtualized 4 hosts on my laptop, one of the most Cloudera manager servers, Several other running Cloudera Manager Agent, after the normal operation of the machine, found that the memory consumption is too strong, I intend to migrate two running Agent to another working computer, then use the Vagant

Ann to HadoopMy installation path is software under the root directoryUnzip the Hadoop package into the software directoryView directory after decompressionThere are four configuration files to modifyModify Hadoop-env.shModify the Core-site.xml fileConfigure Hdfs-site.xmlConfigure Mapred-site.xmlCompounding Yarn-site.xmlCompounding slavesFormat HDFs File systemSu

Enter HDUser user EnvironmentA. Su-hduserB. TAR-ZXF hadoop.2.2.0.tar.gzC. ln-s hadoop-2.2.0/ Editing environment variablesVim ~/.BAHSRC modifying system parametersA. Turn off the firewallService Iptables StopChkconfig iptables offVim/etc/selinux/configChange into disabledSetenforce 0Service Iptables StatusB. Modifying the maximum number of open files1) vim/etc/security/limits.conf

I. Hadoop-eclipse-plugin-2.7.3.jar plugin download Click to download the plugin into the installation directory of Eclipse DropinsThird, the configuration on eclipse3.1 Opening Window-->persperctive-->other3.2 Select Map\/reduce, click OK3.3 Click the image icon to add a cluster3.4 The Hadoop cluster

I. Download and installation of VMware Download VMware Install VMware: NextSecond, the download and installation of CentOS Download CentOS Installation of three CentOS 64-bit virtual machines (Master slave1 slave2) When you build Hadoop, Master will act as the Namenode node, with two slave as the Datanode node Each virtual machine I allocated 1G memory 20G HDD When you install a virtual machine, you can choose to install minimal mode without an interf

Hbase-site.xml3. Exit Safe Mode-safemodeHDFs dfsadmin--safenode Leave4.hadoop cluster boot not successful-format multiple timesClose the cluster, delete the Hadoopdata directory, and delete all the log files in the Logs folder under the Hadoop installation directory. Reformat and start the

$ sudo cp README.txt input 3. Run the WordCount program, and save the output in a print folder #每次重新执行wordcount程序的时候, you need to delete the output folder first. Otherwise there will be an error . $ bin/hadoop Jar Share/hadoop/mapreduce/sources/hadoop-mapreduce-examples-2.7.2-sources.jar Org.apache.hadoop.examples.WordCount Input Output 4. View character Statist

\catalina\localhost;Create a new XML file based on the project name you deployed, called Solr.xml if the package is called SOLR.The contents are: 3, Tomcat boot java_opts parameter setting modeUnder the root directory where you installed Tomcat, find Bin\catalina.bat added in the java_opts option,Like Windows, you can add a row of set JAVA_OPTS-DSOLR.SOLR.HOME=C:/EXAMPLE2/SOLR to the frontResources:Http://www.myexception.cn/open-source/745464.html Copyright NOTICE: This article for Bo Master o

Parameters required for configuration:Configuration conf = new Configuration();conf.set("fs.defaultFS", "hdfs://hadoop2cluster");conf.set("dfs.nameservices", "hadoop2cluster");conf.set("dfs.ha.namenodes.hadoop2cluster", "nn1,nn2");conf.set("dfs.namenode.rpc-address.hadoop2cluster.nn1", "10.0.1.165:8020");conf.set("dfs.namenode.rpc-address.hadoop2cluster.nn2", "10.0.1.166:8020");conf.set("dfs.client.failover.proxy.provider.hadoop2cluster", "org.apache

Build a Hadoop 2.7.3 cluster in CentOS 6.7 Hadoop clusters have three operating modes: Standalone mode, pseudo distribution mode, and full distribution mode. Here we set up the third full distribution mode, that is, using a distributed system to run on multiple nodes.1. Configure DNS in Environment 1.1 Go to the configurati