Amazon EC2 stands for "Amazon Elastic Compute Cloud". It is a part of Amazon Web Services (AWS) and allows users to rent virtual machine instances by the hour. You can create instances, launch and manage them through a central interface, through a web API or through a console.

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PDFTK with PHP exec() fails using Amazon EC2 Windows Server IIS7

I'm using PDFTK to merge some PDFs on my Amazon EC2 instance running Windows Server and IIS7. When I try running PDFTK using PHP exec(), it does not work. For example: <?php $e = exec("pdftk"); ...
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Rails Project on EC2

I have successfully deployed rails project on EC2. Here are the steps: Clone rails project from github Set up database and database.yml Run rake db:migrate Run rake assets: precompile Start rails ...
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Amazon EC2 ssh timeout

I am new to AWS services. I created an EC2 instance of Ubuntu and I was able to connect to it. I was able to run TeamCity and Rails server on the instance and things were fine. I created an image of ...
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permission denied when trying to create, edit, and delete files using puTTY from an Amazon EC2 instance

I am new to programming and Linux, so please try and simplify things. I created a minecraft server using Amazon EC2 and I am using puTTY to edit and start the server. It runs and I other people can ...
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AWS Public IP best practices for direct connection to more than 5 boxes [closed]

I have a general question on how best to accomplish what must be a common use case. I have a few environments up at AWS comprised of various EC2 instances. Lets say I have: - prod1 and prod2 both ...
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Getting two EC2 instances in the same security group to communicate

I'm new to EC2 and I'm trying to setup an elasticsearch cluster. So far, I've been having trouble with discovery, so I want to get to the root problem by understanding how to telnet between two EC2 ...
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EC2 web application folder structure

I have a web application which is currently working fine on my local machine and I am now trying to get it to work on EC2. I transferred the index.php file into the folder /var/www and I am able to ...
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Amazon AWS autoscaling leader_only attribute

I can't find much documentation on the leader_only attribute of Amazon's EC2 instances. What happens to the leader when an autoscaling group scales down? The default autoscaling template terminates ...
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Deploy Grails Application on Amazon EC2

I have developed Grails app and successfully deployed it on Tomcat7 windows version. I wanted to deploy it on Amazon EC2 (AMI linux 32 version). I installed Tomcat7 on EC2 successfully and everything ...
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Which unix flavor is the standard amazon EC2 linux image based on?

I have an EC2 instance where I have bash & php 5.3 scripts running together (install / copy done by bash, web app via php of course), I need to port these files to a classic dedicated server. My ...
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100 % cpu usage at EC2 windows machine

i'm using windows machine over EC2 and i'm running a very heavy CPU consuming process. my question is if it is dangerous to run a windows over EC2 that use 95-100 cpu most of the time? is it can ...
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How to install/configure new software in newly created amazon instances using Amazon SDK in java?

My team is developing an application which will enable end users to easily create, configure and destroy amazon instances without having to use Amazon SDKs themselves. The process at our end comprises ...
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Error with DataStax Commuity on Amazon EC2

I got this Error if i want to Setup the Datastax Cassandra Cluster (Community Edition), i have used this: http://www.datastax.com/docs/1.2/install/install_ami [EXEC] 06/05/13-10:52:05 sudo rm -rf ...
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How to simulate Amazon's 60 sec timeout on Elastic Load Balancer (ELB) on a local xAMP environment?

We are strugling with the infamous timeout of 60 seconds on ELB (https://forums.aws.amazon.com/thread.jspa?threadID=33427). Our PHP application fails on a few ajax requests. We'd like to simulate ...
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Transfer speed over wifi and 3G within the same room

If two or more mobile devices are in the same room and using wifi and to transfer data between each other and they both get their wifi from the same source, is the speed usually higher than if it were ...

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