Aws

Merging Overlapping Subnets

25 min read

Once upon a time there was a single AWS account. In this AWS account was several regions but a single VPC. To make sure expansions into other regions was …

AWS Elastic IP Details

3 min read

Sometimes it becomes important to understand how your cloud provider implements certain networking details. While working through an issue in AWS I needed to …

SPF and Google Site Verification in Route 53

1 min read

Route53 doesn't allow multiple definitions of the same name/type pair of DNS entries which is quite a headache. This is the first time I've had a conflict of a …

SPF & DKIM Records in Route 53

4 min read

I'm going to do a more detailed post on emailing from Amazon's infrastructure soon, but in the meantime I wanted to quickly throw out solutions too a couple of …

AWS Reserved Instance Pricing

2 min read

The current large project I'm working on is going to be hosted on AWS and I was requested to do a cost estimate. Looking into it, it quickly became clear that …

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