ec2

Burst credits of t2 EC2 instances need monitoring

Burst credits of t2 EC2 instances need monitoring

EC2 is one of the fundamental services on AWS. If you are not 100% Serverless, your application health depends on the health of your EC2 instances. When I do AWS architecture reviews for our clients, I check that CPU burst capacity is monitored for EC2 ...

Migrating to Amazon Linux 2

Migrating to Amazon Linux 2

I run all my EC2 workloads on Amazon Linux. It comes with a superb AWS integration, a secure default configuration, regular security updates, and I can open AWS Support tickets if I run into any problems. In late December 2017, AWS announced the succes...

EC2 Network Performance Cheat Sheet

EC2 Network Performance Cheat Sheet

What is the maximum network throughput of your EC2 instance? The answer to this question is key to choosing the type of an instance or defining monitoring alerts on network throughput. Unfortunately, you will only find very vague information about the ...

Evolution of the EC2 Network Performance: m3, m4, and m5

Evolution of the EC2 Network Performance: m3, m4, and m5

AWS announces new generations of EC2 instances from time to time. Typically, each generation offers better performance at lower costs. This article discusses the networking capabilities of the general purpose instances over time. Spoiler alert: you can ...

EC2 network performance demystified: m3 and m4

AWS offers EC2 instances in different sizes, defined by the instance type. How do you decide which instance type to use? Do you need an m4.large or m4.xlarge instance? At least the following factors should affect your decision: How much memory does the operating system and application need? Does your application benefit from multiple CPU cores? What is the expected network throughput going in and out your instance? It’s easy to get the information about the memory and CPU capacity of an instance type a...

AWS Velocity Series: EC2 based app CI/CD pipeline

AWS Velocity Series: EC2 based app CI/CD pipeline

In the previous article, you learned how to use CloudFormation to describe a production-ready infrastructure for an EC2 based app. In this article you will learn to: Automate the creation of an AMI that contains the app with Packer Deploy a CloudFormat...

AWS Velocity Series: EC2 based app infrastructure

AWS Velocity Series: EC2 based app infrastructure

To run a production-ready application on EC2 gives you maximum freedom but also maximum responsibilities. By production-ready, I mean: Highly available: no single point of failure Scalable: increase or decrease the number of instances based on load Fri...

Manage AWS EC2 SSH access with IAM

Manage AWS EC2 SSH access with IAM

AWS can deploy one EC2 Key Pair to your EC2 instance. But this approach has several disadvantages: You can only use one key per EC2 instance. But you shouldn’t share keys between users. Access to EC2 instances via SSH can not be restricted to specific ...

Avoid Sharing Key Pairs for EC2

Avoid Sharing Key Pairs for EC2

Lock and key devices are used by mankind for more than 6.000 years. Whether mechanical, electrical or digital, the concept stays the same: a key is needed to access resources behind a lock. Technology has made incredible progress since then. But one pro...

5 AWS mistakes you should avoid

5 AWS mistakes you should avoid

Since this year I’m working as an AWS Cloud Consultant where I see a lot of small to medium sized AWS deployments. Most of them are typical web applications. I want to share with you the 5 most common mistakes that you better avoid: managing infrastruc...


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