All post by James Walker - DevOps Expert

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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.

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Cloud-Native Security: 4C’s, Tools & Best Practices

General18 min read

Cloud-Native Security: 4C’s, Tools & Best Practices

Learn about cloud native security - what it is, what are the 4C’s of cloud-native security, and best practices to secure your environments.

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News on Spacelift, product updates, all IaC & DevOps

Recent posts

11 Most Useful Cloud Orchestration Tools & Platforms [2025]

General14 min read

11 Most Useful Cloud Orchestration Tools & Platforms [2025]

See what are the best tools and platforms for cloud orchestration. Learn what are the benefits of using them to coordinate IT operations in the cloud.

How to Add Comments in a YAML File [Tutorial]

General7 min read

How to Add Comments in a YAML File [Tutorial]

Learn how to comment on a YAML file with single-line comments and how to comment out multiple lines. See when to use them and best practices.

Docker Compose – What is It, Example & Tutorial

Docker16 min read

Docker Compose – What is It, Example & Tutorial

What is Docker Compose? See a getting started tutorial for beginners with file structure, commands, how to install, how to use, and docker compose examples.

Fixing Kubernetes CreateContainerConfigError & CreateContainerError

Kubernetes9 min read

Fixing Kubernetes CreateContainerConfigError & CreateContainerError

What is CreateContainerConfigError and CreateContainerError in Kubernetes? See common causes and how to fix and debug.

Kubernetes StatefulSet vs. Deployment with Use Cases

Kubernetes11 min read

Kubernetes StatefulSet vs. Deployment with Use Cases

See the differences between Kubernetes StatefulSet vs. Deployment. Including the table comparison and use cases for each.

Docker ENTRYPOINT vs. CMD : Differences & Examples

Docker11 min read

Docker ENTRYPOINT vs. CMD : Differences & Examples

What are ENTRYPOINT and CMD in Docker, how do they run, and why use them? See ENTRYPOINT vs. CMD and examples of using them together.

What is Kubecost & How to Use It [Tutorial]

Kubernetes11 min read

What is Kubecost & How to Use It [Tutorial]

Kubecost overview and its features as a cost allocation & optimization tool. Learn how to install Kubecost and use it to make savings in your own cluster.

How to Install Kubernetes – 4 Different Ways [Step-by-Step]

Kubernetes12 min read

How to Install Kubernetes – 4 Different Ways [Step-by-Step]

Learn how to install Kubernetes cluster with this step-by-step guide. See how to set it up using Minikube, MicroK8s, K3s, and Kubeadm

21 Docker Security Best Practices: Daemon, Image, Containers

Docker14 min read

21 Docker Security Best Practices: Daemon, Image, Containers

This Docker security best practices guide includes key steps you can take to secure the Docker daemon, create safer images, and protect containers at runtime.

Guide to Kubernetes Certification in 2025: Path, Exams & Cost

Kubernetes12 min read

Guide to Kubernetes Certification in 2025: Path, Exams & Cost

Are you looking to get your Kubernetes certifications? We'll cover the available courses, their cost and how to prepare. Pick the right K8s certification path!

Kubernetes Persistent Volumes – Tutorial and Examples

Kubernetes14 min read

Kubernetes Persistent Volumes – Tutorial and Examples

What are Persistent Volumes in Kubernetes? How PVs work, and how to get started? See types, access modes, and best practices.

How to Scale CI/CD – 7 Steps to Optimize Your Pipelines

General12 min read

How to Scale CI/CD – 7 Steps to Optimize Your Pipelines

Take a look at some of the CI/CD scaling problems, learn how to detect them. Learn how to scale and optimize your CI/CD pipelines.

Docker Cheat Sheet – 36 Docker CLI Commands

Docker16 min read

Docker Cheat Sheet – 36 Docker CLI Commands

This Docker cheat sheet include a quick reference to all the important CLI commands you need when using Docker!

What is AWS STS – Security Token Service?

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.

How to Run Kubernetes on AWS – Tutorial

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.

How to Keep Docker Secrets Secure: Complete Guide

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.

Docker vs. Kubernetes: Container Solutions Comparison

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.

Docker Networking – Basics, Network Types & Examples

Docker12 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.

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