The 2nd time last month I had to do it myself / figure it out / explain it so I decided to note it down.
Install AWS CLI on your OSX
jvzoggel$ brew install awscli jvzoggel$ echo 'complete -C aws_completer aws' >> ~/.bashrc
AWS Identity and Access Management
From the IAM console create your personal access key ID and secret access key. Make sure to note them both down in a safe place !
Configure the aws-cli
Use the generated AWS IAM credentials to configure your AWS CLI for connection.
jvzoggel$ aws configure AWS Access Key ID [None]: xxxxxxxxx AWS Secret Access Key [None]: xxxxx Default region name [None]: eu-west-1 Default output format [None]: jvzoggel$ aws --version aws-cli/1.11.48 Python/2.7.10 Darwin/16.4.0 botocore/1.5.11