Docker
Themes: Cloud Security and Containers
#NoDrama DevOps now has over 100 posts covering Cloud, DevOps, Security, Automation, AWS, and more. Cloud Security and Containers are two of the main themes I’ve written about this year. I’ve curated a guide to each of these themes in a new ‘Knowledge Base’ section of the website. These guides should help you find the
Why people replace Kubernetes clusters instead of upgrading them
The pace, complexity, and risk of Kubernetes upgrades means you should probably replace clusters instead of upgrading them.
Choose Container Orchestrators Strategically
Deciding which of container orchestrator is right for your organization or team now and in the future is an exercise in strategy. This post will help you develop a strategy aligned to your specific customer needs, technological and organizational assets, desired business state, and other information required to build a good strategy.
What is different about Kubernetes
Kubernetes is a container orchestrator built by a large community of technology vendors and users that was inspired by Google’s Borg orchestrator. Kubernetes is operated by everyone from major Cloud providers to you. From the What is Kubernetes page: Kubernetes is a portable, extensible, open-source platform for managing containerized workloads and services, that facilitates both
What is different about Elastic Container Service (ECS)
ECS is a first class container orchestration platform for teams committed to AWS. If you’re in one of the ‘best for’ categories, give it a serious look.
Container orchestrators are the same but different, Docker Swarm
This is the first of several posts that will provide a high-level introduction to the top container orchestrators in late-2019, differences between them, and which might be best for you.
Concept: Container Orchestrator
A container orchestrator schedules, runs, and supervises containerized application processes, usually across a cluster of hosts. This post describes the responsibilities of a container orchestrator and what the orchestrator integrates with.
Docker cpu resource limits
Docker allows you to constrain the CPU resources available to a container on either a relative or absolute basis — this post shows you how and why you might do that.
Docker memory resource limits and a heap of Java
Ok, so maybe you’re convinced why you need to set limits for container resource usage, especially when running on shared container application platforms like ECS, Kubernetes, and Swarm. In this post, I’ll show you how to set memory limits for a basic Java web app built with Spring Boot. Most container clusters are memory bound,
The importance of Docker container resource limits
This post explains why enforcing resource limits is a critical best practice for running workloads on shared compute platforms such as a container cluster orchestrated by ECS, Kubernetes, or Swarm.
Running Docker application containers more securely
This post describes easy to adopt practices for running Docker application containers more securely.
What are application containers and what problems do they solve?
This post introduces application containers and explains how Docker helps you package and run (crazy) applications inside neat little boxes, keeping the hosting computer nice and tidy.
Continuous Integration of a Containerized Application
Learn how to create a continuous integration process that packages custom software into a Docker image, tests, and publishes that as a releasable artifact.