Docker


4 kubectl Commands to Help Debug Pod Issues in Kubernetes

If you’ve worked with containers a lot you’re probably good at commands like docker logs and docker exec to retrieve information about containers that may be having problems. One of the challenges that comes up as people move to Kubernetes is understanding how to get similar details about Pods and any containers running within them. I’ve had several people ask me about this recently in my instructor-led Kubernetes course as well as online with my Docker for Web Developers course (which has a module on Kubernetes) so I decided to post a few of the initial commands you can use […]


Docker Volumes and “print working directory” Command Syntax

I often use Docker to run an application in a container as I’m writing and testing code. That involves creating a volume that points the container to a path on my machine. The challenge with setting up volumes is that the “print working directory” command that is often used to easily identify the location of your source code on the host machine is different depending on what command terminal you’re using (especially on Windows). Here’s a quick summary that shows the syntax for “print working directory” in different command terminals when using volumes (if you’re new to volumes you can read […]


Enabling Metrics Server for Kubernetes on Docker Desktop

Lately we’ve been working on a new Docker and Kubernetes instructor-led training class that we’ll be running onsite at several companies this year. The class uses Docker Desktop and the Kubernetes features it provides for several of the chapters. We needed to get the local cluster students will use to match as closely as possible to a cloud-based Kubernetes cluster that would be found on Azure, AWS, or GCP. The class covers using AKS as well, but most of the lab exercises rely on Kubernetes in Docker Desktop so running key features like the dashboard and Metrics API was important. […]


CloudSkills Podcast Interview: Docker, Kubernetes, and Microservices

I recently chatted with my friend Mike Pfieffer who runs the CloudSkills.fm podcast about Docker, Kubernetes, and Microservices. Mike works a lot in the DevOps space and I work in the developer space (and do some DevOps as well) so it was a fun discussion about challenges that come up in both worlds. We discussed the benefits of containers, the role of Kubernetes, and how both can play an important role when working with Microservices. Listen to the podcast here: CloudSkills.fm Website Video of the Podcast 


ngAir Podcast: Containerizing Angular Apps with Docker

I had the opportunity to chat with Justin, Bonnie, Alyssa, and Austin about Angular and Docker on the ngAir podcast recently and really enjoyed talking with everyone. We talked about the benefits of containers from a developer and DevOps standpoint, how to create custom images with Dockerfiles, how to build/push/pull images, and how to run containers. We of course focused on the role that containers can play with Angular applications but the concepts apply to any front-end app (or back-end app for that matter). Here are some of the key links mentioned in the podcast: ​Containerizing Angular Apps with Docker […]


New Pluralsight Course: Containerizing Angular Applications with Docker

I’m excited to announce the release of my next course on Pluralsight titled Containerizing Angular Applications with Docker! This course walks you through the process of containerizing front-end applications (with a focus on Angular) using Docker images and containers. Here are a few questions this course will help you answer: Why “containerize” front-end applications? Should I consider using a CDN? How can I serve front-end applications created with Angular (or other libraries/frameworks) using nginx? How do I create a custom Dockerfile and custom image for my application? What is a multi-stage build and how can I use it to build […]


Video: Microservices with Docker, Angular, and ASP.NET Core

I recently had the opportunity to speak to a group in Denver, Colorado about Microservices, Docker, Angular, and ASP.NET Core which was a lot of fun. Briebug sponsored the event at Alamo Drafthouse and we had a great turnout!  Thanks to Briebug for organizing the event (really appreciate Anne, Jesse, and Bill for everything they did) and for everyone that came out to see the talk. Here’s an overview of what the talk was all about: Learn about the role that microservices can play in today’s enterprise environments in this talk by Dan Wahlin. Learn what a microservice is, how […]


Getting Started with Machine Learning using TensorFlow and Docker

Machine Learning (ML) gets a lot of press now days and for good reason. It can be used to gain insight into areas that were difficult to tap into even a few years ago. Want to know what type of object is shown in a picture? Machine learning can tell you. Need help predicting the next big stock to buy based on historical trends? Machine learning can help out there as well. The sky is the limit! Machine Learning (and more specifically a technique for implementing it called Deep Learning (DL)) can help analyze financial information, filter spam, examine healthcare records, assess […]


“Containerizing” Angular with Docker: My ng-conf Talks and Overall Experience

ng-conf 2018 is officially over….too bad it can’t go on forever. It’s such a great conference that you don’t want it to end. In addition to hearing a lot of high-quality talks from the Angular team and other awesome speakers, I had the opportunity to hang out with John Papa a lot (one of my best friends) as well as several other close friends, and made many new friends throughout the week as well (thanks to my buddy Brian Clark for the picture to the right). Here’s a little information about the conference and my overall experience. If you’re only interested in videos […]


Channel 9 Video: Five Things About Docker 2

I had the opportunity to sit down with Simona Cotin (Azure Developer Advocate at Microsoft) at the AngularMix conference to talk about “Five Things About Docker”. The video is one in a series of “Five Things” videos being created and produced by the Azure Developer Advocate team at Microsoft and presents various tech topics in a fun way. This particular video is focused on Docker and a few of the things I really like about it.