When you do Hadoop, you often need to open the bin directory under Hadoop and enter the command
In Ubuntu we use a custom command to simply implement this command
Open the. bashrc file First
sudo vim ~/.BASHRC
And then add it at the end of the file
Alias hadoopfjsh= '/usr/local/hadoop/bin/
1 Creating Hadoop user groups and Hadoop users STEP1: Create a Hadoop user group:~$ sudo addgroup Hadoop STEP2: Create a Hadoop User:~$ sudo adduser-ingroup Hadoop hadoopEnter the password when prompted, this is the new
Preface
Install the hadoop-2.2.0 64-bit version under Linux CentOS, solve two problems: first, resolve namenode cannot start, view log file logs/ Hadoop-root-namenode-itcast.out (your name is not the same as mine, see the Namenode log file on the line), which throws the following exception:Java.net.BindException:Problem binding to [xxx.xxx.xxx.xxx:9000] Java.net
Ubuntu installation (Here I do not catch a map, just cite a URL, I believe that everyone's ability)Ubuntu Installation Reference Tutorial: http://jingyan.baidu.com/article/14bd256e0ca52ebb6d26129c.htmlNote the following points:1, set the virtual machine's IP, click the network connection icon in the bottom right corner of the virtual machine, select "Bridge mode", so as to assign to your LAN IP, this is ver
Distribution Mode)The hadoop daemon runs on a cluster.
Version: Ubuntu 10.04.4, hadoop 1.0.2
1. Add a hadoop user to the System user
Before installation, add a user named hadoop to the system for hadoop testing.
~$ sudo addgrou
(fully distributed mode)The Hadoop daemon runs on a cluster.
Version: Ubuntu 10.04.4,hadoop 1.0.2
1. Add Hadoop user to System user
One thing to do before you install--add a user named Hadoop to the system to do the Hadoop test.
Hadoop Elephant Tour 008- start and close Hadoop sinom Hadoop is a Distributed file system running on a Linux file system that needs to be started before it can be used. 1.Hadoop the startup command store locationreferring to the method described in the previous section, us
Setting up Hadoop cluster environment steps under Ubuntu 12.04I. Preparation before setting up the environment:My native Ubuntu 12.04 32bit as Maser, is the same machine that was used in the stand-alone version of the Hadoop environment, http://www.linuxidc.com/Linux/2013-01/78112.htmAlso in the KVM Virtual 4 machines,
Various tangle period Ubuntu installs countless times Hadoop various versions tried countless times tragedy then see this www.linuxidc.com/Linux/2013-01/78391.htm or tragedy, slightly modifiedFirst, install the JDK1. Download and installsudo apt-get install OPENJDK-7-JDKRequired to enter the current user password when entering the password, enter;Required input yes/no, enter Yes, carriage return, all the wa
I downloaded the latest version of the Ubuntu64 (14.04) Desktop version of the system, in the installation of hadoop2.6.0, because the official Hadoop is on the 32-bit machine compiled, it is necessary to download the Hadoop source code to compile.Preparation: HADOOP-2.6.0-SRCJdk1.7.0_75 (because the latest version of the JDK is the 1.8.0_31 version, and I am usi
Ubuntu System (I use the version number is 140.4)The Ubuntu system is a desktop-based Linux operating system, and Ubuntu is built on the Debian distribution and GNOME desktop environments. The goal of Ubuntu is to provide an up-to-date, yet fairly stable, operating system that is primarily built with free software for
previous #, plus the system JDK path, save exitConfigure Hadoop-1.2.1/conf/core-site.xml, command line:Gedit/home/hadoop/hadoop-1.2.1/conf/core-site.xmlCreate a new hadoop_tmp directory in Hadoop because of http://blog.csdn.net/bychjzh/article/details/7830508Add the following Configure
then log in to HDUser. This command deletes all existing data, so use this command with caution if data is already available.7. Start HadoopUsing $ start-all.sh to start Hadoop, and to determine if it started successfully, we can run the JPS command, and we can see the following results, stating that it has started su
separatelyHadoop-daemons.sh stop jobtracker stop JobTracker daemon separatelyHadoop-daemons.sh start tasktracker start TaskTracker daemon separatelyHadoop-daemons.sh stop tasktracker start TaskTracker daemon separately
If the Hadoop cluster is started for the first time, you can use the
, see the following test results;After decompression, you can go into the Hadoop directory you created to see the effect, determined that it has been decompressed;6: After extracting the JDK, start adding Java to the environment variable (configure the JDK environment variable in ubuntu OS):Go in and press Shift+g to the last face, to the front double-click G, cl
your cluster does not have the required software installed, you will have to install them first.Take Ubuntu Linux for example:$ sudo apt-get install SSH$ sudo apt-get install rsyncOn the Windows platform, if all required software is not installed when installing Cygwin, you need to start Cyqwin Setup Manager to install the following packages:
OpenSSH- Net class
DownloadTo get the release vers
VMware with Ubuntu systems, namely: Master, Slave1, Slave2;Start configuring the Hadoop distributed cluster environment below:Step 1: Modify the hostname in/etc/hostname and configure the corresponding relationship between the hostname and IP address in the/etc/hosts:We take the master machine as the main node of Hadoop
1) Modify the Namespaceid of each slave to make it consistent with the Namespaceid of the master.Or2) Modify the Namespaceid of master so that it is consistent with the Namespaceid of slave.The "Namespaceid" is located in the "/usr/hadoop/tmp/dfs/data/current/version" file and the front Blue May vary according to the actual situation, but the red in the back is unchanged.Example: View the "VERSION" file under "Master"650) this.width=650; "src=" http:
Install Hadoop 2.2.0 on Ubuntu Linux 13.04 (Single-node Cluster)This tutorial explains what to install Hadoop 2.2.0/2.3.0/2.4.0/2.4.1 on Ubuntu 13.04/13.10/14.04 (Single-node Cluster) . This is setup does not require a additional user for Hadoop. All files related to
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