All post by James Walker

Spacelift + ServiceNow = Self-Service IaC Without the Learning Curve

James Walker

James Walker is the founder of Heron Web, a UK-based software development studio providing bespoke solutions for SMEs. He has experience managing complete end-to-end web development workflows with DevOps, CI/CD, Docker, and Kubernetes. James is also a technical writer and has written extensively about the software development lifecycle, current industry trends, and DevOps concepts and technologies.

jhwalker.net

AWS11 min read

What is AWS STS – Security Token Service?

AWS STS definition and overview. See an example of how to assume a role with AWS STS.

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Recent posts

Kubernetes15 min read

How to Run Kubernetes on AWS – Tutorial

In this step-by-step tutorial, you'll learn three different ways to handle Kubernetes deployments on AWS, including their benefits and drawbacks.

Docker14 min read

How to Keep Docker Secrets Secure: Complete Guide

Secrets are sensitive values. Learn how to use your Docker secrets with Docker Compose, Swarm and when building Docker images.

Docker15 min read

Docker vs. Kubernetes: Container Solutions Comparison

Both Docker and Kubernetes are container tools. See their similarities and differences, and the advantages of using each tool.

Docker13 min read

Docker Networking – Basics, Network Types & Examples

With this Docker networking introduction, you'll learn how Docker networks function and the basics of using them with your container deployments.

Kubernetes13 min read

15 Common Kubernetes Pitfalls & Challenges

See the common Kubernetes pitfalls and their solutions to get more control over your cluster and its deployments.

General12 min read

16 Most Useful Container Orchestration Tools in 2025

Container orchestrators are the key to modern DevOps workflows - see the list of the best container orchestration tools and platforms.

Kubernetes10 min read

What is a Kubernetes Operator? Definition & Examples

Learn what the Kubernetes operator is, how it works, and how to write one. See different operator examples. Operator vs controller explained.

Docker13 min read

What Is a Dockerfile And How To Build It – Best Practices

Learn what Dockerfile is, an example of how to create and use one, and some best practices you should follow.

Docker11 min read

Docker Volumes – Guide with Examples

Learn what Docker Volumes are and the use cases they enable with some practical examples of using volumes with Docker and Docker Compose.

General19 min read

What is Argo CD? Overview & Tutorial

Learn how Argo CD works, see the core concepts, best practices, and top alternatives. In the tutorial, we cover deployment to Kubernetes.

Kubernetes12 min read

What is a Kubeconfig File & How to Create It [Tutorial]

Learn why and how to use Kubeconfig file for Kubernetes clusters and how to merge Kubeconfigs into one file to use Kubectl commands.

Kubernetes11 min read

Guide to Kubernetes StatefulSet – When to Use It and Examples

How and when to use Kubernetes StatefulSet objects to reliably manage state in your cluster. See a practical example.

Kubernetes13 min read

Kubernetes CI/CD Pipelines – 8 Best Practices and Tools

Discover top Kubernetes CI/CD tools and best practices. Learn how to build efficient Kubernetes CI/CD pipelines for faster, safer delivery.

Kubernetes13 min read

Prometheus Monitoring for Kubernetes Cluster [Tutorial]

How does Prometheus work with Kubernetes? Install, set up, and run Prometheus in Kubernetes using kube-prometheus-stack.

Docker14 min read

Docker Tutorial for Beginners – Introduction & Getting Started

What is Docker? How to get started with Docker? See our Docker tutorial for beginners with practical examples of common container management tasks.

Platform Engineering15 min read

What is Platform Engineering? Role, Principles & Benefits

Platform engineering definition. Learn what platform engineers do, how to build your team, and how it benefits your software workflows.

Kubernetes17 min read

What is Kubernetes Architecture? – Components Overview

Learn what are the different components of Kubernetes architecture that work together to create a functioning Kubernetes cluster.

Kubernetes19 min read

Kubernetes Security: 9 Best Practices for 4C Security Model

What is Kubernetes security? See common security issues, and use these Kubernetes security best practices to harden your environment.

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