James Joyner

3 min read

James Joyner

Sep 20

Undo a Git Commit: Two Questions Before You Type Anything

#git #beginners #tutorial #programming

4 min read

James Joyner for Modern Git Academy

Sep 20

Twelve Commits, One Regression, Four Test Runs: git bisect run

#git #debugging #testing #devops

3 min read

James Joyner

Sep 20

Stop Stashing. Use a Second Working Directory for the Interruption.

#git #productivity #devops #tutorial

3 min read

James Joyner for The Copilot Stack

Sep 17

Reviewing Generated Terraform: The Destroy Count, count vs for_each, and a Comment in the Wrong Place

#terraform #devops #aws #githubcopilot

3 min read

James Joyner

Sep 15

I Pinned 31 GitHub Actions to Commit SHAs. One Major Tag Was Two Versions Stale.

#github #devops #security #cicd

4 min read

James Joyner

Sep 13

Your Fine-Grained GitHub Token Gets 404, Not 403. Check These Four Things Before the URL.

#github #security #devops #api

4 min read

James Joyner

Sep 13

You Installed Git. Here Are the Next Ten Minutes.

#git #beginners #tutorial #programming

3 min read

James Joyner

Sep 13

Someone Force-Pushed Over main. Here Is the Reflog Nobody Knows They Have.

#git #github #devops #tutorial

3 min read

James Joyner

Sep 13

gh api --paginate --slurp --jq 'length' Counts Pages, Not Issues

#github #cli #bash #devops

3 min read

James Joyner

Sep 12

Copilot Writes Your GitHub Actions Workflow. Here Are the 4 Things It Gets Wrong.

#githubactions #security #devops #cicd

4 min read

James Joyner

Sep 12

Copilot Wrote a Kubernetes Manifest That Passed Schema Validation With 21 Security Findings In It

#kubernetes #devops #security #githubcopilot

3 min read

James Joyner

Sep 12

Stop Prompt-Engineering Copilot. Write Three Rules in a File Instead.

#githubcopilot #productivity #devops #ai

3 min read

James Joyner

Aug 19

DNS Troubleshooting with dig: The Commands DevOps Engineers Actually Need

#linux #networking #devops #tutorial

4 min read

James Joyner

Aug 18

tcpdump for DevOps: Read a TCP Handshake and Stop Guessing

#linux #networking #devops #tutorial

4 min read

James Joyner

Aug 15

Network Troubleshooting as a Stack: Find Which Layer Is Broken First

#linux #networking #devops #kali

4 min read

James Joyner

Aug 13

Nmap for Authorized Infrastructure Validation (Not Hacking)

#security #networking #devops #kali

4 min read

James Joyner

Aug 4

Keep Docker Engine as Your Kubernetes Runtime on Ubuntu with cri-dockerd

#kubernetes #docker #ubuntu #tutorial

3 min read

James Joyner

Jul 31

Set Up a Kubernetes Node on Ubuntu 24.04 with containerd (the Docker-Compatible Runtime)

#kubernetes #containerd #ubuntu #tutorial

3 min read

James Joyner

Jul 26

Run Kubernetes in Docker on Ubuntu for Local Development

#kubernetes #docker #ubuntu #tutorial

6

2 min read

James Joyner

Jul 25

minikube with the Docker Driver on Ubuntu: A Practical Local Cluster

#kubernetes #docker #ubuntu #minikube

2 min read

James Joyner

Jul 22

From Docker Build to Kubernetes Deploy on Ubuntu: The Image Workflow That Never Changed

#kubernetes #docker #ubuntu #devops

3 min read

James Joyner

Jul 20

State Encryption in OpenTofu: How It Works and How to Roll It Out

#opentofu #terraform #security

5 min read

James Joyner

Jul 19

Migrating from Terraform to OpenTofu: A Low-Risk Playbook

#opentofu #terraform #devops #tutorial

5 min read

James Joyner

Jul 18

OpenTofu vs Terraform in 2026: What Actually Changed

#opentofu #terraform #devops #tutorial

5 min read

James Joyner

Jul 17

The OpenTofu Errors You'll Actually Hit (and How to Fix Them Fast)

#opentofu #terraform #devops #tutorial

5 min read

James Joyner for DevOps AI ToolKit

Jul 15

The 12 DevOps Errors That Page Teams Most (And the First Thing to Check)

#devops #kubernetes #sre #tutorial

8

3 min read

James Joyner for DevOps AI ToolKit

Jul 14

I Built Free Browser-Based Validators for YAML, Kubernetes and Terraform (No Upload, No Signup)

#devops #yaml #opensource #kubernetes

2 min read

James Joyner

Jul 14

Fix Docker Exit Code 137 (OOMKilled): Why It Happens and How to Stop It

#docker #devops #sre #tutorial

6 min read

James Joyner

Jul 13

Hardening Docker Containers: The Security Habits That Actually Matter

#docker #security #devops #containers

7 min read

James Joyner

Jul 12

Docker Networking, Demystified: Bridge, Host, and Container DNS

#docker #devops #networking #tutorial

7 min read

James Joyner

Jul 11

Docker Volumes vs Bind Mounts: Where Your Data Actually Lives

#docker #devops #containers #tutorial

6 min read

James Joyner for DevOps AI ToolKit

Jul 10

It Works on My Machine: A Docker War Story About exec format error

#docker #devops #debugging #beginners

3 min read

James Joyner for DevOps AI ToolKit

Jul 10

The 10 Docker Errors That Waste the Most Time (and the One-Line Fix)

#docker #devops #tutorial #beginners

3 min read

James Joyner for DevOps AI ToolKit

Jul 9

How I Cut a Docker Image From 1.2GB to 180MB

#docker #devops #tutorial #performance

4

3 min read

James Joyner for DevOps AI ToolKit

Jul 8

7 Dockerfile Mistakes That Are Quietly Costing You

#docker #devops #security #tutorial

3 min read

James Joyner for DevOps AI ToolKit

Jul 7

Reading Loki Logs With AI: Patterns That Work

#devops #loki #logs #logql

5 min read

James Joyner for DevOps AI ToolKit

Jul 7

The Pod That Lied: A Kubernetes Readiness Probe War Story

#devops #kubernetes #readinessprobes #reliability

7 min read

James Joyner for DevOps AI ToolKit

Jul 7

The Volume That Wouldn't Let Go: A Kubernetes PVC War Story

#devops #kubernetes #persistentvolumes #storage

8 min read

James Joyner for DevOps AI ToolKit

Jul 6

AI Prompt Templates for Prometheus Alerting

#devops #prometheus #alerting #promql

2 min read

James Joyner

Jul 5

Docker vs Kubernetes: Do You Actually Need an Orchestrator Yet?

#docker #kubernetes #devops #tutorial

6 min read

James Joyner

Jul 5

From Docker Compose to Kubernetes: What Actually Changes

#kubernetes #docker #devops #tutorial

6 min read

James Joyner

Jul 5

Docker Containerization: Turning 'Works on My Machine' Into a Reproducible Artifact

#docker #devops #containers #tutorial

6 min read

James Joyner

Jul 5

Docker Containerization Habits That Keep Production Calm

#docker #devops #containers #sre

6 min read

James Joyner

Jul 5

What Is a Docker Image, Really? Layers, Caching, and Size

#docker #devops #containers #tutorial

6 min read

James Joyner

Jul 5

Why Your Docker Images Are Huge (and How I Slim Them Down)

#docker #devops #containers #tutorial

6 min read

James Joyner

Jul 5

The Docker CLI Commands I Actually Use Every Day

#docker #devops #cli #tutorial

6 min read

James Joyner

Jul 5

Debugging Containers From the Terminal: A Practical Docker CLI Workflow

#docker #devops #cli #sre

7 min read

James Joyner for DevOps AI ToolKit

Jul 3

The Right Way to Pair AI With Terraform Plans

#devops #terraform #ai #plan

1

4 min read

James Joyner for DevOps AI ToolKit

Jun 29

DevOps as a Service Pricing: What Should Businesses Expect to Pay?

#devops #pricing #manageddevops #roi

8 min read

James Joyner for DevOps AI ToolKit

Jun 28

Best DevSecOps Security Tools for CI/CD Pipeline Protection

#devops #devsecops #cicd #security

9 min read

James Joyner

Jun 27

Humanizing Artificial Intelligence for Log Analysis: Turning Raw Server Logs Into Clear DevOps Answers

#devops #ai #observability #kubernetes

9 min read

James Joyner for DevOps AI ToolKit

Jun 26

DevOps Security Best Practices Every Engineering Team Should Follow

#devops #security #devsecops #hardening

8 min read

James Joyner

Jun 25

Humanizing Artificial Intelligence for SRE Teams: Reducing Alert Fatigue With Smarter AI Guidance

#sre #devops #ai #observability

9 min read

James Joyner for DevOps AI ToolKit

Jun 25

Why AI Loves Ansible (And You Should Let It Help)

#devops #ansible #ai #automation

5 min read

James Joyner

Jun 23

Humanizing Artificial Intelligence for Platform Engineering: Helping Internal Developer Platforms Become Easier to Use

#platformengineering #devops #ai #kubernetes

9 min read

James Joyner

Jun 22

Vibe-Coded Infrastructure: How to Ship Fast Without Torching Production

#vibecoding #devops #ai #productivity