--D. Thiebaut (talk) 14:35, 22 June 2013 (EDT)

Page under construction!

Server Hardware/OS Configuration

ASUS M5A97 R2.0 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard ($84.99)
Corsair Vengeance 16GB (2x8GB) DDR3 1600 MHz (PC3 12800) Desktop Memory (CMZ16GX3M2A1600C10) ($120.22)
AMD FX-8150 8-Core Black Edition Processor Socket AM3+ FD8150FRGUBOX ($175)
2x 1 TB-RAID 1 disks
- used Ctrl-F in POS to call RAID setup.
- setup 2 1TB drives as RAID-1
Ubuntu Desktop V13.04

Software Setup

Use Ubuntu Software Manager GUI and install following packages:

VirtualBox
emacs
eclipse
python 3.1
ddclient (for dyndns.org, e.g. hadoop0.dyndns.org)
open-ssh to access remotely
setup keyboard ctrl/capslock swap
setup 2 video displays

Setup Virtual Cluster

Suggestion from Bo Feng @ http://b-feng.blogspot.com/2013/02/create-virtual-ubuntu-cluster-on.html:

Create a virtual machine
- Change the network to bridge mode
Install Ubuntu Server OS
- Setup the hostname to something like "node-01"
Boot up the new virtual machine
- sudo rm -rf /etc/udev/rules.d/70-persistent-net.rules
Clone the new virtual machine
- Initialize with a new MAC address
Boot up the cloned virtual machine
- edit /etc/hostname
  - change "node-01" to "node-02"
- edit /etc/hosts
  - change "node-01" to "node-02"
Reboot the cloned virtual machine
Redo step 4 to 6 until there are enough nodes

Note: the ip address of each node should start with "192.168." unless you don't have a router.

Create First Virtual Server

Based on http://serc.carleton.edu/csinparallel/vm_cluster_macalester.html

On Ubuntu:
open windows manager, go to Downloads, right click (need 3-button mouse) on ubuntu-13.04-server-amd64.iso and pick open with archive-mounter
Start virtualBox
- Create new virtual box
- Linux
- Ubuntu 64 bits
- 2 GB virtual RAM
- Create virtual hard disk, VDI
- dynamically allocated
- hadoop100, 8.00 GB drive size

VirtualHadoopCluster VirtualBoxCreateHadoop100.png

- install Ubuntu (pick language, keyboard, time zone, etc...)
- User same as for Hadoop0
- partition disk: Guided, LVM
- install security update automatically
- OpenSSH server (leave all others unselected)
Start Virtual Machine Hadoop100. It works!

Back on hadoop0
- ~~download vboxtools from Sourceforge (this is to make the virtual boxes start automatically at boot time...)~~
- ~~abandonning vboxtools for right now, as it is really to setup a beowulf cluster...~~
Back in VirtualBox. Stop hadoop100
- Go to its settings, Network, Enable Network Adapter, Bridged Adapter, eth0.
- Restart hadoop100
- Ping xgridmac to see if Internet access works:

 ping xgridmac.dyndns.org

- run command ifconfig to get ip address. Note it.
- on Hadoop0, change /etc/hostname to be hadoop100 (was Ubuntu100 for same reason)
- similarly, change /etc/hosts to have line with 127.0.1.1 hadoop100

Back on xgrid
- go to dyndns.org and make sure hadoop100 exists
- ssh to iP address above
- su
- apt-get install ddclient
  - dthiebaut/dyn##etboite
  - hadoop100.dyndns.org
  - (if need to modify this, the info is in /etc/ddclient.conf)

When hadoop100 is reachable from ssh (takes a few minutes)...
On Hadoop100:
- Install java

sudo apt-get install openjdk-6-jdk
java -version
java version "1.6.0_27"
OpenJDK Runtime Environment (IcedTea6 1.12.5) (6b27-1.12.5-1ubuntu1)
OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)

- Disable ipv6 (not sure it's needed)...

 sudo emacs -nw /etc/sysctl.conf

add these lines at the end:

  #disable ipv6  
  net.ipv6.conf.all.disable_ipv6 = 1  
  net.ipv6.conf.default.disable_ipv6 = 1  
  net.ipv6.conf.lo.disable_ipv6 = 1

reboot

- Install hadoop

cd ~/Downloads
wget http://www.bizdirusa.com/mirrors/apache/hadoop/common/stable/hadoop_1.1.2-1_x86_64.deb
sudo dpkg -i hadoop_1.12-1_x86_64.deb

- follow directives in Michael Noll's tutorial for building a 1-node Hadoop cluster.
- create hduser user and hadoop group (already existed)
- create ssh password-less entry
- open /etc/hadoop/hadoop-env.sh and set JAVA_HOME

  export JAVA_HOME=/usr/lib/jvm/java-6-openjdk-amd64/

- Download hadoop from hadoop repository

  sudo -i
  cd /usr/local
  wget http://www.poolsaboveground.com/apache/hadoop/common/stable/hadoop-1.1.2.tar.gz
  tar -xzf hadoop-1.1.2.tar.gz
  mv hadoop-1.1.2 hadoop
  chown -R hduser:hadoop hadoop

- setup user hduser

  su - hduser
  emacs .bashrc

and add

 # HADOOP SETINGS
 # Set Hadoop-related environment variables
 export HADOOP_HOME=/usr/local/hadoop

 # Set JAVA_HOME (we will also configure JAVA_HOME directly for Hadoop later on)
 #export JAVA_HOME=/usr/lib/jvm/java-6-sun
 export JAVA_HOME=/usr/lib/jvm/java-6-openjdk-amd64

 # Some convenient aliases and functions for running Hadoop-related commands
 unalias fs &> /dev/null
 alias fs="hadoop fs"
 unalias hls &> /dev/null
 alias hls="fs -ls"

 export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin"
 export PATH="$PATH:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/local/hadoop/bin:."

This setting of .bashrc should be done by any user wanting to use hadoop.

- Still as user hduser, edit /usr/local/hadoop/conf/hadoop-env.sh and set JAVA_HOME

 export JAVA_HOME=/usr/lib/jvm/java-6-openjdk-amd64

- Edit /usr/local/hadoop/conf/core-site.xml and add

 <property>
  <name>hadoop.tmp.dir</name>
  <value>/app/hadoop/tmp</value>
  <description>A base for other temporary directories.</description>
 </property>
 
 <property>
  <name>fs.default.name</name>
  <value>hdfs://localhost:54310</value>
  <description>The name of the default file system.  A URI whose
  scheme and authority determine the FileSystem implementation.  The
  uri's scheme determines the config property (fs.SCHEME.impl) naming
  the FileSystem implementation class.  The uri's authority is used to
  determine the host, port, etc. for a filesystem.</description>
 </property>

- Edit /usr/local/hadoop/conf/mapred-site.xml and add

<property>
  <name>mapred.job.tracker</name>
  <value>localhost:54311</value>
  <description>The host and port that the MapReduce job tracker runs
  at.  If "local", then jobs are run in-process as a single map
  and reduce task.
  </description>
</property>

- Edit /usr/local/hadoop/conf/hdfs-site.xml and add

<property>
  <name>dfs.replication</name>
  <value>1</value>
  <description>Default block replication.
  The actual number of replications can be specified when the file is created.
  The default is used if replication is not specified in create time.
  </description>
</property>

- Format namenode

As user hduser:

  hadoop namenode -format

- hadoop configuration directory is in

  sudo mkdir -p /app/hadoop/tmp
  sudo chown hduser:hadoop /app/hadoop/tmp
  sudo chmod 750 /app/hadoop/tmp

- as su, create link to hadoop-examples*.jar

  sudo ls -n   /usr/local/hadoop/hadoop-examples-1.1.2.jar /usr/local/hadoop/hadoop-examples.jar

- Test as hduser

  cd
  mkdir input
  cp /usr/local/hadoop/conf/*.xml input
  start-all.sh
  hadoop dfs copyFromLocal input/ input

  hadoop dfs -ls
  Found 1 item
  drwxr-xr-x   - hduser supergroup          0 2013-07-24 11:16 /user/hduser/input

  hadoop jar /usr/local/hadoop/hadoop-examples.jar wordcount /usr/hduser/input/ output
  13/07/24 11:24:46 INFO input.FileInputFormat: Total input paths to process : 7
  13/07/24 11:24:46 INFO util.NativeCodeLoader: Loaded the native-hadoop library
  13/07/24 11:24:46 WARN snappy.LoadSnappy: Snappy native library not loaded
  13/07/24 11:24:47 INFO mapred.JobClient: Running job: job_201307241105_0006
  13/07/24 11:24:48 INFO mapred.JobClient:  map 0% reduce 0%
  13/07/24 11:24:57 INFO mapred.JobClient:  map 28% reduce 0%
  13/07/24 11:25:04 INFO mapred.JobClient:  map 42% reduce 0%
  .
  .
  .
  13/07/24 11:25:22 INFO mapred.JobClient:     Physical memory (bytes) snapshot=1448595456
  13/07/24 11:25:22 INFO mapred.JobClient:     Reduce output records=805
  13/07/24 11:25:22 INFO mapred.JobClient:     Virtual memory (bytes) snapshot=5797994496
  13/07/24 11:25:22 INFO mapred.JobClient:     Map output records=3114

  hadoop dfs -ls 
  Found 2 items
  drwxr-xr-x   - hduser supergroup          0 2013-07-24 11:16 /user/hduser/input
  drwxr-xr-x   - hduser supergroup          0 2013-07-24 11:29 /user/hduser/output
 
  hadoop dfs -ls output
  Found 3 items
  -rw-r--r--   1 hduser supergroup          0 2013-07-24 11:29 /user/hduser/output/_SUCCESS
  drwxr-xr-x   - hduser supergroup          0 2013-07-24 11:28 /user/hduser/output/_logs
  -rw-r--r--   1 hduser supergroup      15477 2013-07-24 11:28 /user/hduser/output/part-r-00000

  hadoop dfs -cat output/part-r-00000
  "*"	11
  "_HOST"	1
  "alice,bob	11
  "local"	2
  'HTTP/'	1
  (-1).	2
  (1/4	1
  (maximum-system-jobs	2
  *not*	1
  ,	2
  ...

Add New User who will run Hadoop Jobs

taken from http://amalgjose.wordpress.com/2013/02/09/setting-up-multiple-users-in-hadoop-clusters/
add new user to Ubuntu

 sudo useradd  -d /home/mickey -m mickey
  sudo passwd mickey

login as hduser

 hadoop fs –chmod -R  1777 /app/hadoop/tmp/mapred/
 chmod 777 /app/hadoop/tmp
 hadoop fs -mkdir /user/mickey/
 hadoop fs -chown -R mickey:mickey /user/mickey/

login as mickey
- change shell to bash

  chsh

- setup .bashrc and add these lines at the end:

 # HADOOP SETINGS
 # Set Hadoop-related environment variables
 #export HADOOP_HOME=/usr/local/hadoop
 
 # Set JAVA_HOME (we will also configure JAVA_HOME directly for Hadoop later on)
 #export JAVA_HOME=/usr/lib/jvm/java-6-sun
 export JAVA_HOME=/usr/lib/jvm/java-6-openjdk-amd64
 
 # Some convenient aliases and functions for running Hadoop-related commands
 unalias fs &> /dev/null
 alias fs="hadoop fs"
 unalias hls &> /dev/null
 alias hls="fs -ls"

 export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin"
 export PATH="$PATH:/bin:/usr/games:/usr/local/games:/usr/local/hadoop/bin:."

- logout and back in as Mickey

Clone Server

On Hadoop0, VirtualBox Manager
- Use hadoop100 as Master for cloning
- on hadoop100, remove /etc/udev/rules.d/70-persistent-net.rules

sudo rm -f /etc/udev/rules.d/70-persistent-net.rules

Not doing this will prevent the network interface from being brought up

- right click on hadoop100 in VBox manager
- pick new name (i.e. hadoop101)
- check ON "Reinitialize the MAC address of all network cards
- pick Linked clone
- Clone away! (quick, 1/2 a second or so)
- right click on new machine, pick settings
  - System: select 2GB RAM
  - Processor: 1CPU
  - Network: bridged adapter
- start the virtual machine
- it will complain that it is not finding the network
- do this:

ifconfig -a

- Notice the first Ethernet adapter id. It should be "eth?"
- edit the file at /etc/network/interface. Change the adapter (twice) from "eth0" to the adapter id in the previous step
- Save the file
- Reboot the virtual appliance
- edit /etc/ddclient.conf on virtual machine. Set it to new host defined with dyndns.org
- edit /etc/hostname and put the name of the new virtual machine there
- edit /etc/hosts and put name of new machine after 127.0.1.1

   127.0.1.1     hadoop101

Test Hadoop on Hadoop0 Node

Download hadoop-1.1.2.tar.gz and install according to Michael G. Noll's excellent instructions.
Everything works.
In the process, had to create hduser user and hadoop group.

Setup Virtual Hadoop Cluster under Ubuntu with VirtualBox

Contents

Server Hardware/OS Configuration

Software Setup

Setup Virtual Cluster

Create First Virtual Server

Add New User who will run Hadoop Jobs

Clone Server

Test Hadoop on Hadoop0 Node

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