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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.
James Walker

About the Spacelift blog

Spacelift’s collaborative platform for infrastructure as code (IaC) enables DevOps teams to manage complex cloud infrastructures with ease. In line with our reputation as an authority on all things related to IaC management, we pride ourselves on sharing only the most precise, comprehensive, and actionable content related to our areas of expertise. See our Editorial Policy.
How to Run Environment Variables in a Docker Container
Docker10 min read

How to Run Environment Variables in a Docker Container

Learn how to set and run Docker environment variables. Passing environment variables examples and best practices.

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Recent posts

20+ Most Popular DevOps Monitoring Tools for 2024
General21 min read
20+ Most Popular DevOps Monitoring Tools for 2024

See why monitoring is important in DevOps and explore the list of 23 best tools and platforms for DevOps monitoring.

Kubectl Config Set-Context Command [Tutorial & Examples]
Kubernetes11 min read
Kubectl Config Set-Context Command [Tutorial & Examples]

Learn how to use the kubectl config set-context command to create new contexts and modify the existing ones. See examples.

What Does a Platform Engineer Do? Job Description, Role & Responsibilities
Platform engineering14 min read
What Does a Platform Engineer Do? Job Description, Role & Responsibilities

Find out what platform engineering is and how to become a platform engineer with the job description, responsibilities, and average salary.

Kubectl Get Context : Current Context, Switching & Listing
Kubernetes8 min read
Kubectl Get Context : Current Context, Switching & Listing

Learn how to use the kubectl config current-context command and how to get the current namespace from contexts in Kubernetes.

Kubernetes with Open Policy Agent (OPA) & Gatekeeper
Kubernetes14 min read
Kubernetes with Open Policy Agent (OPA) & Gatekeeper

Learn what Open Policy Agent (OPA) is used for in Kubernetes. Gatekeeper vs OPA explained. See an example of OPA policy for Kubernetes.

Docker Swarm vs. Kubernetes – Key Differences Explained
Docker13 min read
Docker Swarm vs. Kubernetes – Key Differences Explained

Discover the similarities and differences between Docker Swarm and Kubernetes and see which is better for your use case.

Kubernetes Multi-Cloud Multi-Cluster Strategy Overview
Kubernetes13 min read
Kubernetes Multi-Cloud Multi-Cluster Strategy Overview

See the key considerations and best practices for implementing a multi-cloud Kubernetes strategy across multiple cloud providers.

Platform Engineering vs. DevOps – Key Differences in 2024
Platform engineering13 min read
Platform Engineering vs. DevOps – Key Differences in 2024

What is the difference between Platform engineering and DevOps? See the comparison and discover the benefits of each approach.

What Are Blue-Green Deployments in Kubernetes?
Kubernetes13 min read
What Are Blue-Green Deployments in Kubernetes?

Explore blue/green deployments with Kubernetes. Learn how to implement them using service selectors, Argo Rollouts, and Fluxcd.

The Role of Kubernetes in DevOps – Use Cases & Other Tools
Kubernetes12 min read
The Role of Kubernetes in DevOps – Use Cases & Other Tools

Discover why you should use Kubernetes for DevOps and see an overview of how Kubernetes supports effective DevOps strategies.

What Is Flux CD & How Does It Work? [Tutorial]
General14 min read
What Is Flux CD & How Does It Work? [Tutorial]

In this tutorial, you’ll learn how to use Flux CD features for Kubernetes GitOps. Flux CD vs ArgoCD explained.

Kubernetes Environment Variables – Setting & Managing
Kubernetes12 min read
Kubernetes Environment Variables – Setting & Managing

Learn what the environment variables in Kubernetes are. See examples - how to set them and pass them in deployment YAML files.

Cloud Governance – What Is It, Framework & Models
General13 min read
Cloud Governance – What Is It, Framework & Models

What is cloud governance, and why does it matter? See the types of control and framework, best practices, and challenges.

Argo Rollouts – What Is It, How It Works & Tutorial
General12 min read
Argo Rollouts – What Is It, How It Works & Tutorial

Deep dive into Argo Rollouts, what it is and use cases. See how to install it with Helm chart and use it for canary and blue-green deployments.

26 Top Kubernetes Tools for Your K8s Ecosystem in 2024
Kubernetes16 min read
26 Top Kubernetes Tools for Your K8s Ecosystem in 2024

Explore the list of 26 best tools you can use with your Kubernetes ecosystem, including monitoring, security, CI/CD and deployment tools.

Kubernetes HPA [Horizontal Pod Autoscaler] Guide
Kubernetes11 min read
Kubernetes HPA [Horizontal Pod Autoscaler] Guide

What is HPA in Kubernetes? See memory metrics and scaling a deployment via CPU example. The difference between HPA and VPA.

Writing .gitlab-ci.yml File with Examples [Tutorial]
General14 min read
Writing .gitlab-ci.yml File with Examples [Tutorial]

Learn what .gitlab-ci.yml file is, the main sections (like stages and variables), how to work with it and see example of writing a gitlab ci yml.

How to List Docker Containers [All, Running, Stopped, and More]
Docker10 min read
How to List Docker Containers [All, Running, Stopped, and More]

See how to use different commands and options like Docker ps, list, ls to list containers. Listing containers in Docker Compose explained.

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