Step 1 : build Amazon EC2 instance Download the .pem file Select the instance you like to connect Referance : http://dez.logdown.com/posts/2017/04/07/aws-ec2-deploy-nodejs-web-app Step 2 : connect to AWS EC2 Create a directory by Terminal: # mkdir -p ~/.ssh Move the download .pem file to the .ssh directory we just created: # mv ~ /Downloads/[key name].pem ~/ssh change the permissions of the .pem file so only the root user can read it: #chmod 400 ~/.ssh/[key name].pem create a config file: # vim ~/.ssh/config Enter the following text into that config file Host *amazonaws.com IdentityFile ~/.ssh/[key name].pem User ec2-user Use the ssh command with your public DNS hostname to connect to your instance # ssh [public DNS] Referance : https://docs.aws.amazon.com/en_us/AWSEC2/latest/UserGuide/AccessingInstancesLinux.html
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