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How to Setup Hadoop 2.6.5 (Single Node Cluster) on Ubuntu, CentOS And Fedora

Written by , Updated on June 8, 2017
BIG-DATA, Opensource , , , , , ,

Apache Hadoop 2.6.5 noticeable improvements over the previous stable 2.X.Y releases. This version has many improvements in HDFS and MapReduce. This how-to guide will help you to install Hadoop 2.6 on CentOS/RHEL 7/6/5, Ubuntu and other Debian-based operating system. This article doesn’t include the overall configuration to setup Hadoop, we have only basic configuration required to start working with Hadoop.

Hadoop on Linux

Step 1: Installing Java

Java is the primary requirement to setup Hadoop on any system, So make sure you have Java installed on your system using the following command.

# java -version 

java version "1.8.0_101"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

If you don’t have Java installed on your system, use one of the following links to install it first.

Install Java 8 on CentOS/RHEL 7/6/5
Install Java 8 on Ubuntu

Step 2: Creating Hadoop User

We recommend creating a normal (nor root) account for Hadoop working. So create a system account using the following command.

# adduser hadoop
# passwd hadoop

After creating an account, it also required to set up key-based ssh to its own account. To do this use execute following commands.

# su - hadoop
$ ssh-keygen -t rsa
$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
$ chmod 0600 ~/.ssh/authorized_keys

Let’s verify key based login. Below command should not ask for the password but the first time it will prompt for adding RSA to the list of known hosts.

$ ssh localhost
$ exit

Step 3. Downloading Hadoop 2.6.5

Now download hadoop 2.6.0 source archive file using below command. You can also select alternate download mirror for increasing download speed.

$ cd ~
$ wget http://www-eu.apache.org/dist/hadoop/common/hadoop-2.6.5/hadoop-2.6.5.tar.gz 
$ tar xzf hadoop-2.6.5.tar.gz 
$ mv hadoop-2.6.5 hadoop

Step 4. Configure Hadoop Pseudo-Distributed Mode

4.1. Setup Hadoop Environment Variables

First, we need to set environment variable uses by Hadoop. Edit ~/.bashrc file and append following values at end of file.

export HADOOP_HOME=/home/hadoop/hadoop
export HADOOP_INSTALL=$HADOOP_HOME
export HADOOP_MAPRED_HOME=$HADOOP_HOME
export HADOOP_COMMON_HOME=$HADOOP_HOME
export HADOOP_HDFS_HOME=$HADOOP_HOME
export YARN_HOME=$HADOOP_HOME
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native
export PATH=$PATH:$HADOOP_HOME/sbin:$HADOOP_HOME/bin

Now apply the changes in current running environment

$ source ~/.bashrc

Now edit $HADOOP_HOME/etc/hadoop/hadoop-env.sh file and set JAVA_HOME environment variable. Change the JAVA path as per install on your system.

export JAVA_HOME=/opt/jdk1.8.0_131/

4.2. Edit Configuration Files

Hadoop has many of configuration files, which need to configure as per requirements to setup Hadoop infrastructure. Let’s start with the configuration with basic Hadoop single node cluster setup. first, navigate to below location

$ cd $HADOOP_HOME/etc/hadoop

Edit core-site.xml

<configuration>
<property>
  <name>fs.default.name</name>
    <value>hdfs://localhost:9000</value>
</property>
</configuration>

Edit hdfs-site.xml

<configuration>
<property>
 <name>dfs.replication</name>
 <value>1</value>
</property>

<property>
  <name>dfs.name.dir</name>
    <value>file:///home/hadoop/hadoopdata/hdfs/namenode</value>
</property>

<property>
  <name>dfs.data.dir</name>
    <value>file:///home/hadoop/hadoopdata/hdfs/datanode</value>
</property>
</configuration>

Edit mapred-site.xml

<configuration>
 <property>
  <name>mapreduce.framework.name</name>
   <value>yarn</value>
 </property>
</configuration>

Edit yarn-site.xml

<configuration>
 <property>
  <name>yarn.nodemanager.aux-services</name>
    <value>mapreduce_shuffle</value>
 </property>
</configuration>

4.3. Format Namenode

Now format the namenode using the following command, make sure that Storage directory is

$ hdfs namenode -format

Sample output:

15/02/04 09:58:43 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG:   host = svr1.tecadmin.net/192.168.1.133
STARTUP_MSG:   args = [-format]
STARTUP_MSG:   version = 2.6.5
...
...
15/02/04 09:58:57 INFO common.Storage: Storage directory /home/hadoop/hadoopdata/hdfs/namenode has been successfully formatted.
15/02/04 09:58:57 INFO namenode.NNStorageRetentionManager: Going to retain 1 images with txid >= 0
15/02/04 09:58:57 INFO util.ExitUtil: Exiting with status 0
15/02/04 09:58:57 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at svr1.tecadmin.net/192.168.1.133
************************************************************/

Step 5. Start Hadoop Cluster

Now start your Hadoop cluster using the scripts provides by Hadoop. Just navigate to your Hadoop sbin directory and execute scripts one by one.

$ cd $HADOOP_HOME/sbin/

Now run start-dfs.sh script.

$ start-dfs.sh

Sample output:

15/02/04 10:00:34 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [localhost]
localhost: starting namenode, logging to /home/hadoop/hadoop/logs/hadoop-hadoop-namenode-svr1.tecadmin.net.out
localhost: starting datanode, logging to /home/hadoop/hadoop/logs/hadoop-hadoop-datanode-svr1.tecadmin.net.out
Starting secondary namenodes [0.0.0.0]
The authenticity of host '0.0.0.0 (0.0.0.0)' can't be established.
RSA key fingerprint is 3c:c4:f6:f1:72:d9:84:f9:71:73:4a:0d:55:2c:f9:43.
Are you sure you want to continue connecting (yes/no)? yes
0.0.0.0: Warning: Permanently added '0.0.0.0' (RSA) to the list of known hosts.
0.0.0.0: starting secondarynamenode, logging to /home/hadoop/hadoop/logs/hadoop-hadoop-secondarynamenode-svr1.tecadmin.net.out
15/02/04 10:01:15 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

Now run start-yarn.sh script.

$ start-yarn.sh

Sample output:

starting yarn daemons
starting resourcemanager, logging to /home/hadoop/hadoop/logs/yarn-hadoop-resourcemanager-svr1.tecadmin.net.out
localhost: starting nodemanager, logging to /home/hadoop/hadoop/logs/yarn-hadoop-nodemanager-svr1.tecadmin.net.out

Step 6. Access Hadoop Services in Browser

Hadoop NameNode started on port 50070 default. Access your server on port 50070 in your favorite web browser.

http://svr1.tecadmin.net:50070/

hadoop single node namenode

Now access port 8088 for getting the information about cluster and all applications

http://svr1.tecadmin.net:8088/

hadoop single node applications

Access port 50090 for getting details about secondary namenode.

http://svr1.tecadmin.net:50090/

Hadoop single node secondary namenode

Access port 50075 to get details about DataNode

http://svr1.tecadmin.net:50075/

hadoop-2-6-single-node-datanode

Step 7. Test Hadoop Single Node Setup

7.1 – Make the HDFS directories required using following commands.

$ bin/hdfs dfs -mkdir /user
$ bin/hdfs dfs -mkdir /user/hadoop

7.2 – Now copy all files from local file system /var/log/httpd to hadoop distributed file system using below command

$ bin/hdfs dfs -put /var/log/httpd logs

7.3 – Now browse hadoop distributed file system by opening below url in browser.

 http://svr1.tecadmin.net:50070/explorer.html#/user/hadoop/logs

hadoop-test-uploaded-files

7.4 – Now copy logs directory for hadoop distributed file system to local file system.

$ bin/hdfs dfs -get logs /tmp/logs
$ ls -l /tmp/logs/

You can also check this tutorial to run wordcount mapreduce job example using command line.

Rahul
Rahul
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I, Rahul Kumar am the founder and chief editor of TecAdmin.net. I am a Red Hat Certified Engineer (RHCE) and working as an IT professional since 2009..

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72 Comments

  1. Dinakar N K Reply to Dinakar
    October 7, 2017 at 2:40 pm

    Dear Mr Rahul
    Could you kindly help me, how we can deploy the services of Single Node Cluster to multiple clients in a Lab environment.

  2. DINAKAR N K Reply to DINAKAR
    August 16, 2017 at 3:35 pm

    Dear Mr. Rahul,
    I am very thankful for your installation guide but could not understand how we can
    Edit ~/.bashrc file to setup Hadoop Environment Variables, could you kindly help us with more screen shots please

    I was stuck up at these area
    4.1. Setup Hadoop Environment Variables
    4.3 Resolution of host name with IP, where should we set this IP please help me

    Regards
    Dinakar NK

    • Rahul Rahul K. Reply to Rahul
      August 17, 2017 at 3:21 am

      Hi Dinakar, Simply edit the ~/.bashrc configuration file and copy the settings at end of file.

      echo “export HADOOP_HOME=/home/hadoop/hadoop
      export HADOOP_INSTALL=$HADOOP_HOME
      export HADOOP_MAPRED_HOME=$HADOOP_HOME
      export HADOOP_COMMON_HOME=$HADOOP_HOME
      export HADOOP_HDFS_HOME=$HADOOP_HOME
      export YARN_HOME=$HADOOP_HOME
      export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native
      export PATH=$PATH:$HADOOP_HOME/sbin:$HADOOP_HOME/bin” > ~/.bashrc

  3. Manmitsinh Reply to Manmitsinh
    June 29, 2017 at 3:23 pm

    Thank You Very much nice tutorial
    installed successfully but at last i m getting following error .. please reply
    [email protected]:~/hadoop1/hadoop-2.6.5/bin$ bin/hdfs dfs -put /var/log/httpd logs
    -bash: bin/hdfs: No such file or directory

  4. Ruchira Reply to Ruchira
    June 8, 2017 at 4:10 am

    Getting the error below – Is there a revised link?

    [[email protected] ~]$ wget http://apache.claz.org/hadoop/common/hadoop-2.6.0/hadoop-2.6.0.tar.gz
    –2017-06-08 09:30:08– http://apache.claz.org/hadoop/common/hadoop-2.6.0/hadoop-2.6.0.tar.gz
    Resolving apache.claz.org (apache.claz.org)… 74.63.227.45
    Connecting to apache.claz.org (apache.claz.org)|74.63.227.45|:80… connected.
    HTTP request sent, awaiting response… 404 Not Found
    2017-06-08 09:30:09 ERROR 404: Not Found.

  5. sidharth Reply to sidharth
    April 17, 2017 at 11:53 am

    [email protected]:~$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
    [email protected]:~$ chmod 0600 ~/.ssh/authorized_keys
    [email protected]:~$ ssh localhost
    ssh: connect to host localhost port 22: Connection refused
    ……
    as i shown problem above.
    how to solve this problem ?
    I have tried everything but still I’m here.
    please help me..for solving this problem..

    • Rahul Rahul K. Reply to Rahul
      April 17, 2017 at 1:43 pm

      Hi Sidharth,

      Plz provide results of following commands.

      $ telnet localhost 22
      $ netstat -tulpn | grep 22

      • sidharth Reply to sidharth
        April 18, 2017 at 2:59 am

        [email protected]:~$ telnet localhost 22
        Trying ::1…
        Trying 127.0.0.1…
        telnet: Unable to connect to remote host: Connection refused
        [email protected]:~$ netstat -tulpn | grep 22
        (Not all processes could be identified, non-owned process info
        will not be shown, you would have to be root to see it all.)
        [email protected]:~$

        • Rahul Rahul K. Reply to Rahul
          April 18, 2017 at 3:03 am

          It looks OpenSSH server is not running on your system.

          https://tecadmin.net/install-openssh-server-on-ubuntu-linuxmint/

          Don’t change the default port.

          • sidharth Reply to sidharth
            April 18, 2017 at 3:32 am

            After your guidence…..i run it again,and i get this
            [email protected]:~$ ssh localhost
            The authenticity of host ‘localhost (::1)’ can’t be established.
            ECDSA key fingerprint is SHA256:yzHhnxJhNNct0zStIoOZfAjruW+kQHB9kjGSMXhjdEs.
            Are you sure you want to continue connecting (yes/no)? yes
            Warning: Permanently added ‘localhost’ (ECDSA) to the list of known hosts.
            sign_and_send_pubkey: signing failed: agent refused operation
            [email protected]’s password:

            The programs included with the Kali GNU/Linux system are free software;
            the exact distribution terms for each program are described in the
            individual files in /usr/share/doc/*/copyright.

            Kali GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
            permitted by applicable law.
            Last login: Tue Apr 18 08:49:08 2017 from ::1
            -bash: $’\r’: command not found

        • sidharth Reply to sidharth
          April 18, 2017 at 3:05 am

          I’m working on ” Sentiment analysis of twitter data using hadoop with hive & flume “.
          So I’m following your tutorial.
          And my o.s. version is KALI “Rolling-2.0,amd64”.

    • Punit Bansal Reply to Punit
      May 4, 2017 at 5:23 am

      I am able to setup the hadoop multi node in ubuntu. but not able to setup the multi node in centos 6.6.
      Where can i set the interfaces and hosts and hostname?
      Can you please share the video link?

  6. sankalp Reply to sankalp
    April 4, 2017 at 8:24 pm

    I am not able to follow step 2 because executing passwd hadoop, does ask for password.
    I tried hitting just enter but then when I run ssh localhost, it keeps on asking password.

    One think I noticed which is also different is the message (shows ssh2 instead of ssh):-
    Public key saved to /home/hadoop/.ssh2/id_rsa_2048_a.pub

    Please suggest.

  7. Palash Reply to Palash
    March 29, 2017 at 8:18 am

    Hi Rahul,

    Great job!…I had some issue in running sshd ( by default, in centos, sshd needed a manual starting)…..apart from that, everything went smoothly. Your guide is really helpful.

    Regards,
    Palash

  8. Nick Reply to Nick
    February 21, 2017 at 5:23 pm

    So it seems after I do the “set up key based ssh” section my linux machine starts to loose access to certain function’s like:

    # yum
    and
    # ls
    also
    # su – hadoop

    It just comes back saying -bash: yum: command not found

    I’m using CentOS-7-x86_64-Minimal-1511.iso

    Any ideas?

    • Nick Reply to Nick
      February 21, 2017 at 5:31 pm

      Just to follow up on this… I found the following:

      # which yum
      /usr/bin/which: no yum in (/usr/local/sbin:/usr/sbin:$PATH:/opt/jdk1.8.0_121/bin:/opt/jdk1.8.0_121/jre/bin:/root/hadoop/sbin:/root/hadoop/bin:/root/bin)

      # which sudo
      /usr/bin/which: no yum in (/usr/local/sbin:/usr/sbin:$PATH:/opt/jdk1.8.0_121/bin:/opt/jdk1.8.0_121/jre/bin:/root/hadoop/sbin:/root/hadoop/bin:/root/bin)

      # which ls
      alias ls=’ls –color=auto’

      # which su
      /usr/bin/which: no yum in (/usr/local/sbin:/usr/sbin:$PATH:/opt/jdk1.8.0_121/bin:/opt/jdk1.8.0_121/jre/bin:/root/hadoop/sbin:/root/hadoop/bin:/root/bin)

      Any ideas?

  9. Mounika Reply to Mounika
    September 21, 2016 at 8:10 am

    I want to change my CentOs code that means I want to add hadoop single node cluster to this and I need to share some other?
    How can I do this ??

  10. Ammi Reddy Tetala Reply to Ammi
    June 3, 2016 at 3:15 am

    hdfs file not found

  11. Brian Reply to Brian
    May 4, 2016 at 7:52 pm

    all went well except the last step: step 7:

    report01.qalab.rc1():/oracle/app/hadoop/hadoop-2.7.2 > mkdir user
    report01.qalab.rc1():/oracle/app/hadoop/hadoop-2.7.2 > bin/hdfs dfs -mkdir /oracle/app/hadoop/hadoop-2.7.2/user
    16/05/04 18:58:49 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform… using builtin-java classes where applicable
    mkdir: `/oracle/app/hadoop/hadoop-2.7.2/user’: No such file or directory

    can you help?

  12. Happy Reply to Happy
    April 21, 2016 at 10:23 am

    I have a error with comand $bin/hdfs dfs -mkdir /user
    Error
    WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform… using builtin-java classes where applicable
    mkdir: Cannot create directory /user. Name node is in safe mode.

    I cannot fix error. Please help me
    Thank you all !

  13. luc Reply to luc
    March 4, 2016 at 10:36 am

    awesome article ! read a lot of outdated ones, and went crazy these last hours trying to configure my cluster. Great thanks dude if you’re in France I owe you a beer

  14. Harshal Reply to Harshal
    March 1, 2016 at 9:37 am

    Hey friend,
    i am newbie about hadoop i configured hadoop on vagrant ubuntu machine.i wants access hadoop web ui on browser but i unable to do so.i tried changing the core-site.xml file for hadoop ui on browser by my machine ip and different ports for ui like 9000/8020 and 50075,50070 but nothing happens.
    plz help so.
    Thanks in advance.

  15. Krishna Reply to Krishna
    February 11, 2016 at 4:17 am

    When i run wordcount job i’m getting below error

    > hadoop jar wc.jar WordCount /user/hadoop/HDFSClient.java /user/hadoop/wc.out
    16/02/08 12:24:56 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform… using builtin-java classes where applicable
    16/02/08 12:24:56 INFO client.RMProxy: Connecting to ResourceManager at /0.0.0.0:8032
    16/02/08 12:24:56 INFO mapreduce.Cluster: Failed to use org.apache.hadoop.mapred.YarnClientProtocolProvider due to error: Error in instantiating YarnClient
    Exception in thread “main” java.io.IOException: Cannot initialize Cluster. Please check your configuration for mapreduce.framework.name and the correspond server addresses.
    at org.apache.hadoop.mapreduce.Cluster.initialize(Cluster.java:120)
    at org.apache.hadoop.mapreduce.Cluster.(Cluster.java:82)
    at org.apache.hadoop.mapreduce.Cluster.(Cluster.java:75)
    at org.apache.hadoop.mapreduce.Job$9.run(Job.java:1266)
    at org.apache.hadoop.mapreduce.Job$9.run(Job.java:1262)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:415)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
    at org.apache.hadoop.mapreduce.Job.connect(Job.java:1261)
    at org.apache.hadoop.mapreduce.Job.submit(Job.java:1290)
    at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1314)
    at WordCount.main(WordCount.java:59)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:136)

  16. Rajarsh Reply to Rajarsh
    December 30, 2015 at 1:03 am

    Hey,

    have a question, could you please explain me, why have we created a user after installation of java, and how could the password less ssh work for ssh the localhost when i am already in the same system, or am i missing something in here.

    Thanks

  17. Reecha Reply to Reecha
    December 3, 2015 at 3:39 pm

    Thank you so much for precise instructions which makes it simple and perfect !
    Great help 🙂

  18. anusha Reply to anusha
    November 23, 2015 at 5:57 am

    can i create cluster with two different os (ubuntu and cygwin on windows ) in which hadoop (same version)is installed ?

  19. bhanu Reply to bhanu
    August 18, 2015 at 8:19 pm

    great article.. works fine

  20. garima Reply to garima
    July 30, 2015 at 7:17 am

    I’am using Hadoop-2.6.0 in Ubuntu 15 on a single node. When I’am starting secondarynamenode daemon, it starts without any error, but shutt down automatically as soon it is started. Even jps command is not showing it. all other deamons are running properly. I have checked secondarynamenode log file, it doesn’t show any error but a shuttdown message at the end. Please help me to resolve this

  21. Elias Reply to Elias
    July 27, 2015 at 8:35 pm

    Hello Rahul!

    It works on Centos 7 , JDK 8 & Hadoop 2.6
    Thanks! a great tutorial.

  22. Tarak Reply to Tarak
    July 24, 2015 at 1:20 pm

    Thanks. It worked with Centos7 and Hadoop 2.7.1

  23. Hossein Tahani Reply to Hossein
    June 12, 2015 at 11:07 pm

    Thanks. It worked with fedora 22 and Hadoop 2.7.
    The only Warning i get is below. I am not sure what it means.

    WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform… using builtin-java classes where applicable

  24. Shashank Reply to Shashank
    May 24, 2015 at 5:52 pm

    Hi Rahul,

    I am trying to run my workflow on a new Yarn cluster via oozie. The job submits fine and as part of the workflow creates a scanner; the scanner is serialised and written to disk. Then during deserialising the string to a scan object I encounter the following error

    Caused by: com.google.protobuf.InvalidProtocolBufferException: Protocol message end-group tag did not match expected tag.
    at com.google.protobuf.InvalidProtocolBufferException.invalidEndTag(InvalidProtocolBufferException.java:94)
    at com.google.protobuf.CodedInputStream.checkLastTagWas(CodedInputStream.java:124)
    at com.google.protobuf.CodedInputStream.readGroup(CodedInputStream.java:241)
    at com.google.protobuf.UnknownFieldSet$Builder.mergeFieldFrom(UnknownFieldSet.java:488)
    at com.google.protobuf.GeneratedMessage.parseUnknownField(GeneratedMessage.java:193)
    at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$Scan.(ClientProtos.java:13718)
    at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$Scan.(ClientProtos.java:13676)
    at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$Scan$1.parsePartialFrom(ClientProtos.java:13868)
    at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$Scan$1.parsePartialFrom(ClientProtos.java:13863)
    at com.google.protobuf.AbstractParser.parsePartialFrom(AbstractParser.java:141)
    at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:176)
    at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:188)
    at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:193)
    at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:49)
    at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$Scan.parseFrom(ClientProtos.java:14555)
    at org.apache.hadoop.hbase.mapreduce.TableMapReduceUtil.convertStringToScan(TableMapReduceUtil.java:516)

    I googled and checked for all kinds of config errors but all my configurations such as nodename, jobtracker, etc are correctly configured. Also, the google protobuf jar is consistent across all YARN components and my code. Wondering whats going wrong?
    a
    -Shashank

  25. Nancy Reply to Nancy
    May 22, 2015 at 10:53 am

    Hi,
    I need to install Hadoop 2.6.0 multi node cluster with different os configurations. I am already having a master node and one slave node both at Ubuntu 12.04. I want to add one more slave node with CentOS.
    I wanted to ask is it fine?

    Thanks in advance!

  26. Michael Reply to Michael
    May 11, 2015 at 4:50 am

    Hi Mr. Rahul!

    First of all let me say THANK YOU for this tutorial. This is a very big help especially to a person like me who just started learning Hadoop / Bigdata.

    1. I followed your guidelines without error, BUT, i can’t access the services in a browser. Giving me error “This webpage is not available”.

    2. If I rebooted my machine, do I need to run the start-dfs.sh and start-yarn.sh again?

    I’m using oracle virtualbox CentOS on a Ubuntu host pc.

    Thank you!

  27. Vatsal Thakor Reply to Vatsal
    May 10, 2015 at 5:23 am

    Hi will you please help me to solve out this

    [[email protected] hadoop]$ bin/hdfs dfs -put /var/log/httpd logs
    15/05/10 10:51:06 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform… using builtin-java classes where applicable
    put: Error accessing file:/var/log/httpd

  28. pete Reply to pete
    March 19, 2015 at 2:15 am

    Hi this is really a great post, I followed it and it works! I have a follow-up question: can you post another blog for how to install Spark on this single YARN cluster which can work with the the data on hdfs on this single machine?

  29. Krishna Reply to Krishna
    December 8, 2014 at 2:12 am

    I am trying to install hadoop 2.6 on OEL6 using the instructions given in this blog. When I execute “hdfs namenode -format” I get the following error:
    Any suggestions on what might have gone wrong?
    ***************************************************************
    14/12/07 00:11:32 INFO util.GSet: capacity = 2^15 = 32768 entrie
    14/12/07 00:11:33 INFO namenode.NNConf: ACLs enabled? false
    14/12/07 00:11:33 INFO namenode.NNConf: XAttrs enabled? true
    14/12/07 00:11:33 INFO namenode.NNConf: Maximum size of an xattr: 163
    14/12/07 00:11:33 FATAL namenode.NameNode: Failed to start namenode.
    java.lang.IllegalArgumentException: URI has an authority component
    at java.io.File.(File.java:423)
    at org.apache.hadoop.hdfs.server.namenode.NNStorage.getStorag torage.java:329)
    at org.apache.hadoop.hdfs.server.namenode.FSEditLog.initJourn java:270)
    at org.apache.hadoop.hdfs.server.namenode.FSEditLog.initJourn EditLog.java:241)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.format(Nam )
    at org.apache.hadoop.hdfs.server.namenode.NameNode.createName java:1379)
    at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameN
    14/12/07 00:11:33 INFO util.ExitUtil: Exiting with status 1
    14/12/07 00:11:33 INFO namenode.NameNode: SHUTDOWN_MSG:
    /************************************************************
    SHUTDOWN_MSG: Shutting down NameNode at java.net.UnknownHostException
    ************************************************************/

  30. Muhammad Reply to Muhammad
    December 7, 2014 at 5:25 am

    export HADOOP_HOME=/home/hadoop/hadoop
    I didnt understand the above statement. When you create a user hadoop, a folder will be created in home directory. What the purpose of second hadoop?

    cd $HADOOP_HOME/etc/hadoop
    There is no hadoop folder in etc directory.
    I am confused because etc comes under the supervision of root user rather than hadoop user.

  31. Swapnil Reply to Swapnil
    December 5, 2014 at 1:15 pm

    Hi, I am trying to run wordcount example. But it is getting stuck at ACCEPTED state.
    It is not going into RUNNING state.
    Any help appreciated. I have followed the tutorial exact. But using 2.6.0 instead of 2.4.0

  32. supriya pati Reply to supriya
    November 19, 2014 at 10:07 am

    Hello,
    We have followed the given steps for centos 6.5 and hadoop2.5.0. All the dameons get started but still the namenode is not visible on the browser using port no: 50070, error is displayed: “Connection to server sar166.co.com failed”. Please can you suggest some solution!!!
    Thank You.

    • Martin-Luther ETOUMAN Reply to Martin-Luther
      June 18, 2015 at 12:26 am

      The port #9000 must be busy.
      2 options:
      – you can change the listening port on the `core-site.xml` file
      – or you can stop the over application listening to #9000 (php-fpm ?)

      Once it is done, just run `stop-dfs.sh` followed by & `start-dfs.sh`

  33. lotto009 Reply to lotto009
    October 29, 2014 at 7:30 am

    Dear
    How I change command from
    -Old 64 bit
    -1.7.0.51
    -rhel-2.4.5.5.el7-x86_64 u51-b31
    -(build 24.51-b03,mixed mode)
    export JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.65-2.5.1.2.el7_0.x86_64/jre
    What command change dorectory
    My VM ware java version
    -1.7.0.45
    -rhel-2.4.3.3.el6-i386 u45-b15
    -build 24.45-b08,mixed mode,sharing
    export JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk-1.7.0.45-2.4.3.3.el6_0.i386/jre
    please help advisor because I am beginner CENT OS and HODOOP
    Best regards

  34. lotto009 Reply to lotto009
    October 29, 2014 at 4:54 am

    Dear Rahul
    How I set again cloud you advisor

  35. lotto009 Reply to lotto009
    October 29, 2014 at 4:18 am

    I used
    -CentOS-6.5-i386-bin-DVD1
    java -version “1.7.0.45”
    OpenJDK Runtime Environment (rhel-2.4.3.3.el6-i386 u45-b15)
    OpenJDK Client VM (build 24.45-b08,mixed mode,sharing)
    after that I can not run hadoop HOW set I get it to run

  36. lotto009 Reply to lotto009
    October 29, 2014 at 2:51 am

    I used
    -CentOS-6.5-i386-bin-DVD1
    java -version “1.7.0.45”
    OpenJDK Runtime Environment (rhel-2.4.3.3.el6-i386 u45-b15)
    OpenJDK Client VM (build 24.45-b08,mixed mode,sharing)
    after that I can not run hadoop how I get it to run

  37. lotto009 Reply to lotto009
    October 29, 2014 at 2:29 am

    Dear Sir
    after I start hadoop can not run please help advisor
    -used hadoop-2.5.1
    -java ‘ ok
    -but have message below
    /home/hadoop/jhadoop-2.5.1/bin/hdfs:line 262: /user/lib/jvm/java-1.7.0-openjdk-1.7.0.65-2-5.1.2.el7_0x86_64/jre/bin/java: N o such file or directrory

  38. Jay37037 Reply to Jay37037
    October 15, 2014 at 11:51 pm

    Hi, This one is a great article. I followed many other blogs for this problem. But none of them worked. This one simply worked with no error.

    But i have a little problem.
    I have installed hbase standalone mode.
    Now i want hbase to use hdfs. So in hbase-site.xml file i added this:

    hbase.rootdir
    hdfs://localhost:9000/hbase

    dfs.replication
    1

    But its giving error and not working. Any reason why its not working? I copied the same configuration of yours during my hadoop installation.

    Regards
    Jay

  39. Barani Reply to Barani
    October 11, 2014 at 7:17 am

    Hi Rahul,

    Thank for this article.

    For me everything worked as I followed through this article. But at the last I could not get details of my datanode when I browsed http://server1.com:50075/. The browser says ‘Unable to connect’

    What could be the problem or what mistake I might have done? Please help.

  40. Alex K Reply to Alex
    September 25, 2014 at 3:24 pm

    Nice article. I Managed ot get as far as starting the scripts and ran into problems that required havking the scripts and then got a warnign that ssh could not regonise the host name but start-dfs.sh and start-yarn.sh eventually ran ok, but I could not access hadoop in the browser and wnhen trying to ls the filesystem I get an error
    hdfs dfs -ls
    Exception in thread “main” java.lang.RuntimeException: core-site.xml not found

    However this got me along way forther

  41. rob Reply to rob
    September 17, 2014 at 3:39 am

    Hi Rahul,

    Thanks for taking the time to write up this guide, it was very helpful.

  42. a khettar Reply to a
    September 1, 2014 at 11:49 am

    Hi Rahul
    Thank you for sharing this with us. I followed your steps in installing hadoop 2.4 on Centos Vritual Machine. I have an Hbase running on my mac machine, I get connection refused error when hbase tries to connect.
    Here is my setting in core-site.xml

    fs.default.name
    hdfs://localhost:54310

    and on Hbase: hbase-site.xml

    hbase.rootdir
    hdfs://localhost:54310/hbase

    I can telnet onto the port 54310 from the VM but not from a remote machine, i.e my local macbook which is running the virtual machine. Looks like the port is closed to remote client. I have disabled firewall but it didn’t help.

    Any idea?

    Regards,

    Ayache

  43. Frankie Reply to Frankie
    July 25, 2014 at 12:36 pm

    Dear Rahul,

    thanks for the tutorial, why

    “hadoop/etc/hadoop/hadoop-env.sh”
    “hadoop/etc/hadoop/hadoop-env.sh” E212: Can’t open file for writing

    cant be written?

    thanks.
    frankie

  44. Sachin Reply to Sachin
    July 2, 2014 at 3:49 pm

    Dear Rahul,

    Thanks for all the steps. Please update the mapred-site.xml to mapred-site.xml.template.

    Also, please update the testing the setup.

    Thanks,
    Sachin

  45. Sasha Kacanski Reply to Sasha
    June 25, 2014 at 12:23 am

    Very good article,
    Two issues,
    First exit; ssh localhost will not work for public/private key
    Should be ssh localhost; exit

    Second
    hadoop path shoudl be added for bin directory, thus
    export PATH=$PATH:$HADOOP_HOME/sbin:$HADOOP_HOME/bin
    Other than this, everything worked flawlessly and hadoop is up and running perfectly…
    Thanks much

  46. Sony Reply to Sony
    June 23, 2014 at 9:24 am

    Dear Rahul,
    This article was very helpful for me. I hope that you will continue…..
    Thank you.

  47. Steve Morin Reply to Steve
    June 17, 2014 at 6:00 am

    Great article but here is a script that also install hbase, hdfs, and a number of other resources

    http://stevemorin.blogspot.com/2014/06/setup-single-node-hadoop-2-cluster-with.html?view=classic

  48. shashank Reply to shashank
    June 16, 2014 at 2:52 pm

    When are you publishing next part of this article? I loved this and I am waiting to see how will you test your setup by running some example map reduce job.

  49. sasikumar Reply to sasikumar
    May 22, 2014 at 1:57 pm

    hi Rahul i follow is i run the pi jops some error came how to solue this problam pls
    [email protected] hadoop-2.4.0]$ hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.4.0.jar pi 5 100
    Number of Maps = 5
    Samples per Map = 100
    14/05/22 19:24:01 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform… using builtin-java classes where applicable
    Wrote input for Map #0
    Wrote input for Map #1
    Wrote input for Map #2
    Wrote input for Map #3
    Wrote input for Map #4
    Starting Job
    14/05/22 19:24:03 INFO client.RMProxy: Connecting to ResourceManager at /127.0.0.1:8032
    14/05/22 19:24:04 INFO input.FileInputFormat: Total input paths to process : 5
    14/05/22 19:24:05 INFO mapreduce.JobSubmitter: number of splits:5
    14/05/22 19:24:05 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1400761600720_0003
    14/05/22 19:24:06 INFO impl.YarnClientImpl: Submitted application application_1400761600720_0003
    14/05/22 19:24:06 INFO mapreduce.Job: The url to track the job:
    14/05/22 19:24:06 INFO mapreduce.Job: Running job: job_1400761600720_0003

  50. sasikumar Reply to sasikumar
    May 22, 2014 at 9:11 am

    hi i run the some pi jps some error how to find
    [[email protected] hadoop-2.4.0]$ jps
    10476 SecondaryNameNode
    10296 DataNode
    10201 NameNode
    10762 NodeManager
    11086 Jps
    10661 ResourceManager

    [[email protected] hadoop-2.4.0]bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.4.0.jar pi 10 100
    Number of Maps = 10
    Samples per Map = 100
    14/05/22 13:18:02 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform… using builtin-java classes where applicable
    Wrote input for Map #0
    Wrote input for Map #1
    Wrote input for Map #2
    Wrote input for Map #3
    Wrote input for Map #4
    Wrote input for Map #5
    Wrote input for Map #6
    Wrote input for Map #7
    Wrote input for Map #8
    Wrote input for Map #9
    Starting Job
    14/05/22 13:18:03 INFO client.RMProxy: Connecting to ResourceManager at /0.0.0.0:8032
    java.io.IOException: Failed on local exception: com.google.protobuf.InvalidProtocolBufferException: Protocol message end-group tag did not match expected tag.; Host Details : local host is: “p2.in.krs.na/67.215.65.132”; destination host is: “0.0.0.0”:8032;
    at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:764)
    at org.apache.hadoop.ipc.Client.call(Client.java:1414)
    at org.apache.hadoop.ipc.Client.call(Client.java:1363)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:206)
    at $Proxy16.getNewApplication(Unknown Source)
    at org.apache.hadoop.yarn.api.impl.pb.client.ApplicationClientProtocolPBClientImpl.getNewApplication(ApplicationClientProtocolPBClientImpl.java:193)
    at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:190)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:103)
    at $Proxy17.getNewApplication(Unknown Source)
    at org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.getNewApplication(YarnClientImpl.java:165)
    at org.apache.hadoop.yarn.client.api.impl.YarnClientImpl.createApplication(YarnClientImpl.java:173)
    at org.apache.hadoop.mapred.ResourceMgrDelegate.getNewJobID(ResourceMgrDelegate.java:179)
    at org.apache.hadoop.mapred.YARNRunner.getNewJobID(YARNRunner.java:230)
    at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:357)
    at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1285)
    at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1282)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:416)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
    at org.apache.hadoop.mapreduce.Job.submit(Job.java:1282)
    at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1303)
    at org.apache.hadoop.examples.QuasiMonteCarlo.estimatePi(QuasiMonteCarlo.java:306)
    at org.apache.hadoop.examples.QuasiMonteCarlo.run(QuasiMonteCarlo.java:354)
    at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
    at org.apache.hadoop.examples.QuasiMonteCarlo.main(QuasiMonteCarlo.java:363)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:72)
    at org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:145)
    at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:74)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:616)
    at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
    Caused by: com.google.protobuf.InvalidProtocolBufferException: Protocol message end-group tag did not match expected tag.
    at com.google.protobuf.InvalidProtocolBufferException.invalidEndTag(InvalidProtocolBufferException.java:94)
    at com.google.protobuf.CodedInputStream.checkLastTagWas(CodedInputStream.java:124)
    at com.google.protobuf.AbstractParser.parsePartialFrom(AbstractParser.java:202)

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