Recently I've tried to write a lambda function in Go, which connects to MySQL database on RDS instance and use IAM Authentication instead of "traditional" approach with passwords (which I think is an anti-pattern in cloud environments). I've spent way too much time to solve the problem, but the documentation and examples on the Internet are lacking and wrong in some places... It's time to document...

As I work with multiple AWS accounts every day I need to switch between them very often. It's a key issue for me to always be sure on which account I work and execute AWS CLI command. So I wrote a quick bash function that I put in my .bashrc. The function is used in my PS1 prompt and shows current AWS CLI profile (from env variable...

If one uses more than one AWS account it's absolutely necessary to configure profiles for AWS CLI. The configuration is made of two files: .aws/credentials and .aws/config. The former contains access keys to AWS accounts - you should never add the file to the version control, the latter contains additional configuration and can be versioned.

Separate credentials for each account

I'd like to invite you to my first speech on AWS User Group in Kraków. The group has reborn after a long period of being inactive and I'm happy I can be a part of it. During my speech I'll tell you about "immutable infrastructure" approach, why it is worth to create virtual machine templates, how to do it in a quick and efficient way and...