Get confident with DevOps and cloud computing. 🚀
Hi, I'm Tom. When I'm not eating egg sandwiches 🥪, I'm on a mission to help you understand the what, how and why of DevOps, Kubernetes and cloud computing.
So, I'm teaching everything I know. Explore the site, and level-up in DevOps engineering, Linux, automation, developing and shipping cloud-native apps!
New? Start here 🔥
Working with containers
- How to Find Docker Images
- How I Created a Python Development Environment with Docker
- How to Start Containers Automatically, with Podman and Systemd
- My Docker Development Workflow: Code, Build, Push, Run
- SSH into a Docker container? Use docker exec instead
- Using volumes with rootless podman, explained
- Rootless container/host networking in Podman, without the hassle
- Managing your Podman containers with Cockpit on Fedora
- The differences between Docker, containerd, CRI-O and runc
- Guide to Containers: Why and how to use them
- 14 best practices for containerising your Java applications
- How To Communicate Between Docker Containers
- Containers: one single process, or multiple processes?
DevOps Engineering & Linux
- The Big Guide to... Getting Into DevOps
- How to Make Sense of Linux System Stats in Top
- An Overview of Linux for DevOps Engineers
- How to Hide Sensitive Things in GitHub Actions Logs
- How to Run an Ansible Playbook
- DevOps Project Ideas
- Can't SSH? You Might Have Too Many Keys
- Build a Java container CI/CD pipeline with Concourse
- Ansible Tips: How to Use a Loop to Render Multiple Templates
- Get your branches right: Git branching for microservices
- Using volumes with rootless podman, explained
- Rootless container/host networking in Podman, without the hassle
- The 7 essential stages of a CI/CD pipeline
- Get your metrics on: How to measure DevOps success
- How to Create a Jenkins Shared Library (Tutorial + Example Repo)
Kubernetes & OpenShift
- How Do You Deploy and Manage Apps in Kubernetes?
- Tekton Debugging: How to List Files in a Task
- How to use Ingress Objects on OpenShift
- How to Override Any Spring Boot Property in Kubernetes
- Create a Docker Build Pipeline with Jenkins on OpenShift
- Old Pods' Home: Why is Kubernetes using an old image?
- What are the main Kubernetes architecture components?
- How to Troubleshoot your App in Kubernetes
- How To Use Kubernetes Custom Resources To Sell More Burgers
- How to Deploy a React app to OpenShift
- How to Deploy a Node.js app on OpenShift
- How to Create a Cluster Admin User in OpenShift, the Easy Way
- 4 Ways to do a Dockerfile Build in OpenShift
- Image Streams in OpenShift: What You Need to Know
- How to Deploy a Web Server on OpenShift
- Developing with Kubernetes on Fedora
- Kubernetes ImagePullBackOff error: what you need to know
- Kubernetes Deployment spec examples
- The Best Places to Learn & Try Kubernetes Online
- Helm: A cheat sheet
- How do Pods communicate in Kubernetes?
Cloud-Native Applications
- Kafka, Kafka Streams and Kafka Connect: What's the difference?
- How to List All Spring Boot Application Properties
- The Honest (and Opinionated) Guide to Java IDEs
- How to Deploy a Node.js app on OpenShift
- Spring Boot app metrics - with Prometheus and Micrometer
- How to create a simple HTTP server in Java - with Undertow
- 14 best practices for containerising your Java applications
Tools & Utilities
- 'docker run' Command Generator - enter your container details and generate a
docker runcommand - YAML to JSON Convertor - the classic
- Kubernetes Manifest Cleaner - remove cluster-specific info from your Kubernetes manifests, similar to
kubectl get --export - See all tools →