Login to AWS EC2 instances

Recently I’ve started to use AWS (Amazon Web Services) to host few of my web apps. I’ve had a little hard time to figure out how to access instances using *.pem file associated while i was creating AWS Instance.

First of all, locate pem file and assign appropriate permissions to it.

chmod 400 /path/my-key-pair.pem

Then depending upon OS (Operating System) of your ec2 instance you’ve created, you’ve to access appropriate user in order get into your ec2 instance.

Amazon Linuxec2-user
RHEL5root | ec2-user
Ubuntu – ubuntu
Fedora – fedora | ec2-user
SUSE Linux – root | ec2-user

All Others OS’s – root | ec2-user  or check with your AMI provider.


For Example
ssh -i /path/my-key-pair.pem ec2-user@ec2-121.compute-1.amazonaws.com

More information please refer to AWS Official User Guide.

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