Whats the difference between .ppk and .pem . Where .pem is stored in amazons ec2 cluster?
amazon-ec2, giraph, ssh
Solution
`.pem` file is what you have download from AWS when you created your key-pair. This is only a one time download and you cannot download it again.
Your software is asking for `.pem` file. Now you are the one who needs to locate that file. You might have downloaded it on you laptop/desktop...etc.
As I said above, `.pem` is not saved anywhere on EC2. It is a one time download and you have to keep it safe.
For `Putty` (windows ssh client), it does not support `.pem` format. Hence you have to convert it to `.ppk` format using PuTTyGen. It's essentially `.pem` but in a different format so that `Putty` can work with it.
Problem
I am using Amazon's EC2 cluster for running GraphLab. They want the location of my `.pem` file, which is my private key. After searching I still I could not find the file in ubuntu. I am using PuTTY.