Diving DevOps

Jan Tymiński

Jan Tymiński

4 followers

DevOps specialist in AWS, Terraform, Docker. Holder of five AWS certs, on the journey to becoming a Kubernetes pro. Navigating the ever-evolving tech landscape with precision.

Is it possible to use a custom certificate issued by a private certificate authority with custom origin behind CloudFront?

Oct 2, 20242 min read

One day an engineer in my team came up with this question. There was no quick answer available, so I started digging and here's what I...

Is it possible to use a custom certificate issued by a private certificate authority with custom origin behind CloudFront?

InvalidParameterValue: DBName must begin with a letter and contain only alphanumeric characters

May 23, 20243 min read

❗ TL;DR: Don't use hyphen (-) for DBName. And if you want to understand the reasons behind that, keep reading further. You are creating an RDS...

InvalidParameterValue: DBName must begin with a letter and contain only alphanumeric characters

Global Accelerator behind Cloudfront

Feb 7, 20243 min read

Intro I made a PoC that used Global Accelerator behind Cloudfront. I haven't found any article regarding such solution being possible, AWS docs also...

AWS Security Groups are tricky!

Jan 2, 20242 min read

Recently I was configuring a security group for a service that uses TCP and UDP ports for ingress connectivity. Security Groups are an Amazon Web...

Terraform - MalformedPolicyDocument: The policy failed legacy parsing

Dec 10, 20231 min read

I was affected by a bug in the AWS provider for Terraform recently. I've got the following error when applying Terraform changes: Error: creating IAM...

Terraform archived template provider and what now?

Nov 19, 20232 min read

What has happened actually? Terraform used to have a template provider in past. It was deprecated with Terraform 0.12 and archived on the 9th of...