Set up Hadoop Cluster on Amazon EC2

Set up Hadoop cluster
on Amazon EC2
Nattinan Yontchai (Earng): KMIT
Dr.Thanachart Numnonda: IMC Institute
By
January 2015

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VPC Creation
In order to install Hadoop on EC2 instance, we may need to make use of Amazon VPC (Virtual Private
Cloud Network) and Elastic IP addresses so that we can stop and start the instance whenever we needed.
With these two AWS services, we can achieve static private and public IP addresses for the EC2
instances being created.
In this step, we will create VPC and assign the security group as follows:
1. Select a VPC Cloud service, it will open VPC dashboard as shown below:
2. Click on Start VPC Wizard and select VPC with a single public subnet as shown below:

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3. Select VPC name as Hadoop VPC and left the rest as default, then click on Create VPC
4. On VPC Dashboard, select Security group and then the default group as shown below:
5. Select Inbound Rules, then click on Edit and enter the following rules:

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6. Save the Inbound rules and rename the group as Hadoop Security Group
Launch EC2 for a Hadoop Master
In this step, we will launch an EC2 instance for a Hadoop master node as follows:
1. Select a EC2 service and click on Lunch Instance
2. Select an Amazon Machine Image (AMI). Select Ubuntu Server 14.04 LTS (PV)
3. Select an Instance Type: m3.large and click Next: Configure Instance Details

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4 . Select 1 instance for Namenode, Hadoop-VPC as Network (the above created VPC) and remaining
properties as default > Click Next: Add Storage
5. Add Storage at least 40 GB > Next: Tag Instance
6. Tag Instance > Enter Value: Hadoop Master 01 > Click Next.

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7. Configure Security Group > Select an existing security group > Select Security Group Name: default >
Click Review and Launch
8. Review Instance Launch > Click Launch
9. Choose an existing key pair > LabCloudera (or Create new key pair) >click on acknowledge > Launch
Instances

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10. Select on EC2 service and choose Elastic IPs, then click on Allocate New Address
11. After getting the IP address, click on Allocate New Address
12. In the Allocate Address dialog box, select the instance just created

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Install Hadoop Master
In this step. we will install a Hadoop master node as follows:
1. View a command for connecting the EC2 instance by select on EC2 dashboard then choose Hadoop master
01, click on Connect you will see the ssh command as follows: (Note in this case the public IP is
54.69.195.87)
2. Open the client terminal console and type the following command
ssh -i clouderalab.pem ubuntu@54.69.195.xx
3. The EC2 instance terminal will now be open

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4. Type command > sudo apt-get update
5. Type command > ssh-keygen (press Enter when it prompts for answering)
6. Type command > cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
7. Type command > ssh 54.69.195.xx (Enter yes when prompt for answering)
8. Type command > exit
9. Type command > sudo apt-get install openjdk-7-jdk (Enter Y when prompt for answering)
10. Type command > java –version and press Enter key. (It should display as shown below)
11. Type command > wget http://mirror.issp.co.th/apache/hadoop/common/hadoop-1.2.1/hadoop-
1.2.1.tar.gz
12. Type command > tar –xvzf hadoop-1.2.1.tar.gz

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13. Type command > sudo mv hadoop-1.2.1 /usr/local/hadoop
14. Type command > sudo vi $HOME/.bashrc
15. Add config as figure below
export HADOOP_PREFIX=/usr/local/hadoop
export PATH=$PATH:$HADOOP_PREFIX/bin
16. Type command > exec bash
17. Type command > sudo vi /usr/local/hadoop/conf/hadoop-env.sh command. Press Enter key.
18. Edit the file as figure below
export JAVA_HOME=/usr/lib/jvm/java-1.7.0-openjdk-amd64
export HADOOP_OPTS=-Djava.net.preferIPv4Stack=TRUE
19. Type command > sudo vi /usr/local/hadoop/conf/core-site.xml

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20. Add Private IP of a master server as figure below (in this case a private IP is 10.0.0.212)
21. Type command > sudo vi /usr/local/hadoop/conf/mapred-site.xml
22. Add Private IP of Jobtracker server as figure below
23. Type command > sudo vi /usr/local/hadoop/conf/hdfs-site.xml
24. Add configure as figure below

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25. Type command > sudo mkdir /usr/local/hadoop/tmp
26. Type command > sudo chown ubuntu /usr/local/hadoop
27. Type command > sudo chown ubuntu /usr/local/hadoop/tmp
28. Type command > hadoop namenode –format
29. Finish
Cloning Instance on EC2 for Hadoop Slaves
In this step, we will clone the created Hadoop instance for three other Hadoop instances to act as Hadoop
slave.
1. Select a EC2 service and choose Hadoop Master 01

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2. Click on Actions > Create Image
3. Name an image as Hadoop-Image as shown below:
4. Select on AMI tab (in the left pane) and choose Hadoop-Image, then click on Launch
5. Select an Instance Type: m3.medium and click Next: Configure Instance Details

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6. Select 3 instance for Namenode, Hadoop-VPC as Network (the above created VPC) and remaining
properties as default > Click Next: Add Storage
7. Add Storage at least 80 GB > Next: Tag Instance
8. Tag Instance > Enter Value: Hadoop Slave > Click Next.
9. Configure Security Group > Select an existing security group > Select Security Group Name: default >
Click Review and Launch

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10. Review Instance Launch > Click Launch
11. Choose an existing key pair > LabCloudera > select on acknowledge > Launch Instances
12. View the EC2 dashboard, it will show three new instances named Hadoop Slave
13. Allocate three new Elastic IP addresses and associate them to the Hadoop Slave instances as shown on
example below
Setup Hadoop Cluster
1. Ssh to the Master node (ssh -i clouderalab.pem ubuntu@54.69.195.xx)
2. Type command > sudo vi /usr/local/hadoop/conf/masters
3. Enter Private IP for the master server. Save and exit.
4. Type command > sudo vi /usr/local/hadoop/conf/slaves
5. Enter Private IP for Datanode servers. Save and exit.
6. Type command > ssh-copy-id –i $HOME/.ssh/id_rsa.pub ubuntu@10.0.0.193 (Enter yes when prompt
for answering)
7. Type command > ssh 10.0.0.193 and press Enter key. (Test password-less )

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8. Type command > exit
9. Repeat step 6 – 8 for all slaves
10. Start Hadoop services by type command >> start-all.sh
11. Type command jps in all four systems to ensure that Hadoop services are running
At this point, the following Java processes should run on master…
…and the following on slave.

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Testing the Hadoop Cluster
1. Viewing the Hadoop HDFS using WebUI by typing the following url in the web browser
http://54.69.195.xx:50070/

Set up Hadoop Cluster on Amazon EC2

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