October 2015

WordPress Templates for AWS CloudFormation

This page has moved to GitHub: https://github.com/widdix/aws-cf-templates/tree/master/wordpress

Improve AWS security: protect your keys with ease

Improve AWS security: protect your keys with ease

As a DevOps engineer, I love to work with the AWS Command Line Interface (CLI) to control various AWS resources in an (half-)automated way. To be able to do so it is necessary to store access keys on my local machine. These access keys (access key ID an...

CloudFormation vs Engineers: How to protect your CloudFormation managed AWS account from human intervention

To eliminate human error as much as possible I advised you to follow the idea of Infrastructure as Code implemented by AWS CloudFormation. Changes to your infrastructure like launching a new virtual server or making changes to a firewall configuration are no longer done manually. Instead you change the description of your infrastructure and let CloudFormation apply the changes.A common problem with CloudFormation are manual changes to resources managed by CloudFormation. A manual change to your AWS accou...

5 announcements I missed at re:Invent

This year’s re:Invent is over. 19,000 attendees are traveling back home. AWS announced tons of new features and services. We summarized the keynotes from day 1 and day 2 at re:Invent 2015 in Las Vegas. My wishlist still contains many items Replacement for NAT instances to access the Internet from private subnets. Why? Invoking Lambda functions from SQS to be able to handle huge spikes in workload without being throttled. IPv6 support for all services because it is 2015. Deeper validation of CloudFormati...

Day 2 at the AWS re:Invent – what we learned

Every year AWS runs a big conference with 19,000 attendees in Las Vegas to announce new services and to educate people in more than 270 sessions about how to use AWS. As usual there was a keynote on Wednesday focusing on enterprise topics and a second keynote on Thursday focusing on the more innovative services. Virtual computing: EC2During the keynote Werner Vogels announced new instance types. So far a t2.micro instance with 1 GiB memory and 1 virtual CPU was the smallest and cheapest EC2 instance ...

Understanding Infrastructure as Code

Understanding Infrastructure as Code

Infrastructure as Code describes the idea of using a high level programming language to control IT systems. In software development, tools like automated tests, code repositories and build servers are increasing quality of software engineering. If your ...

Day 1 at the AWS re:Invent – what we learned

Every year AWS runs a big conference with 19,000 attendees in Las Vegas to announce new services and to educate people in more than 270 sessions about how to use AWS. Although the conference started on Monday, the first Keynote was on Wednesday. And as usual the focus was enterprise customers. I want to highlight the most interesting three service announcements that could have a big impact on enterprise IT. AWS Import/Export SnowballGetting data into the cloud is a challenge. If you ever tried to upl...

Amazon Web Services in Action is available

Amazon Web Services in Action is available

Michael and I have written a book about Amazon Web Services. Our goal was to provide you a deep introduction to AWS with a lot of examples. We have started writing our book in January 2015. And with a lot of support from Manning, our reviewers, and MEAP...

Prevent outages with redundant EC2 instances

Prevent outages with redundant EC2 instances

Unfortunately, EC2 instances aren’t fault-tolerant. Under your virtual server is a host system. These are a few reasons your virtual server might suffer from a crash caused by the host system: If the host hardware fails, it can no longer host the virtu...


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