Hadoop Tutorial 4: Start an EC2 Instance
--D. Thiebaut 16:01, 18 April 2010 (UTC)
- A good description for reserving and connecting an AMI from the terminal window using the ec2-tools can be found here: docs.amazonwebservices.com.
- Alternatively, you can also try this page: paulstamatiou.com.
Method #1: Using the AWS Console
The steps are fairly simple:
Launch instance from AWS console
- Connect to the AWS console (see Tutorial 3 for a reminder), and then select Amazon EC2.
- In the QuickStart tab, pick "Fedora LAMP Server", as a machine to instantiate.
- Select 1 instance, pick the architecture of your choice, and No Preference for the zone.
- Select Launch Instance (Spot Instances are low-rate machines that run only when the demand is low, and the user pays less).
- Click on Continue (make sure your browser window is large enough to see the bottom part of the pop-up!)
- Use defaults for Kernel Id and RamDisk Id.
- No Monitoring
- Click on Continue
- Pick a name for your key-pair file (e.g. dftKeyPair), then click on Create New Key Pair.
- When prompted, save the key-pair file (dftKeyPair.pem) to a local directory on your computer (Desktop, for example).
- Follow the directions to create a security group (I called it dftGroup for simplicity).
- Watch as the instance is created, and loads up...
- When the instance is created, right click on it and click on Connect
Connecting using SSH
- First create a working directory on your local computer (I'll assume you are using a Mac or a Linux box. Similar steps are easy to take for Windows)
- Start a Terminal window
- create a new working directory and copy the Key-Pair file into it:
cd / mkdir aws cd aws cp ~/Desktop/dftKeyPair.pem . chmod go-r dftKeyPair.pem ls -l total 8 -rw-------@ 1 thiebaut wheel 1693 Apr 22 08:25 dftKeyPair.pem
- Copy/Paste the ssh command into a shell that you will have started
ssh -i dftKeyPair.pem email@example.com
- You should be connected!
ssh -i dftKeyPair.pem firstname.lastname@example.org The authenticity of host 'ec2-75-101-234-143.compute-1.amazonaws.com... RSA key fingerprint is cd:79:eb:e5:e9:2e:d6:a2:9c:... Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'ec2-75-101-234-143.compute-1.amazonaws.com,7... __| __|_ ) Fedora 8 _| ( / 32-bit ___|\___|___| Welcome to an EC2 Public Image :-) Base --[ see /etc/ec2/release-notes ]-- [root@ip-10-244-181-219 ~]#
- You are now root of a machine on Amazon's cloud. Play with it!
- Check that the mysql server is working:
[root@ip-10-244-181-219 ~]# mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.0.45 Source distribution Type 'help;' or '\h' for help. Type '\c' to clear the buffer. mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | test | +--------------------+ 3 rows in set (0.00 sec) mysql> quit
- Add a new user
[root@ip-10-244-181-219 ~]# adduser thiebaut [root@ip-10-244-181-219 ~]# ls /home thiebaut webuser [root@ip-10-244-181-219 ~]#
- Try editing a file with emacs...
- Oops, emacs is not installed on the EC2 Instance. No big deal, we can install it. The installation package under Fedora is called yum:
yum -y install emacs
- Now try editing with emacs... :-)
Method #2: Using the EC2 Tools
- Download the EC2 Tools from the Amazon EC2 Resource Center.
- install them in ~/bin/ec2-api-tools (see the Getting Started Guide from Amazon for more info).
- Download the pem files containing your private key and certificate from the Amazon EC2 page (see step above)
- Modify your .bash_profile file and set several variables:
PATH=$PATH:/Users/thiebaut/bin/ec2-api-tools/bin # Amazon AWS/EC2 tools export EC2_HOME=/Users/thiebaut/bin/ec2-api-tools export JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Home export EC2_PRIVATE_KEY=~/.ssh/pk-WMW2M4ZVFMCZJXSXJN4D7ZS4RMTBJ7VV.pem export EC2_CERT=~/.ssh/cert-WMW2M4ZVFMCZJXSXJN4D7ZS4RMTBJ7VV.pem
- Source the .bash_profile file
- Test the ec2 tools:
ec2-describe-images -a | grep hadoop-ec2-images
- verify that a list of images is printed out.
IMAGE ami-ee53b687 hadoop-ec2-images/hadoop-0.17.0-i386.manifest.xml 111560892610 available public i386 machine aki-a71cf9ce ari-a51cf9cc instance-store IMAGE ami-f853b691 hadoop-ec2-images/hadoop-0.17.0-x86_64.manifest.xml 111560892610 available public x86_64 machine aki-b51cf9dc ari-b31cf9da instance-store