Kubernetes

A former co-worker and now friend used to have a tagline, “Everyday is a school day.” I remind myself of this fact nearly every time I learn something new. Overall, 2018 was great for me professionally. I’d like to share some things I picked up on this most recent journey around the sun we call 2018. I’ll make some predictions about 2019 in the process too. Kubernetes Will Get Easier Last year, I mentioned that Kubernetes Will Find Its Way in 2018. I do believe that came to fruition this year. Pretty much every major IT company has a range of ways to consume Kubernetes. They’re all Cloud Native Computing Foundation members at the very least. Operationalizing Kubernetes is getting easier as more people gain experience with Kubernetes. Even lab or cloud-only experience might be enough to get a job at the moment. ...

I went to KubeCon + CloudNativeCon North America 2018 in Seattle, Washington this week. My trip was cut short due to a work meeting in Raleigh, NC. But, I definitely pushed myself to my limits in Seattle. Make no mistake, had I been staying the entire week as planned I would not have done the time on site the way I did. I wore quite a few hats on this trip: ...

I spoke at Detroit Kubernetes, Docker & all related things about Kubernetes Cron Jobs. The talk was more like an explanation with a demo. My demo skills are non-existent so I needed to build those a little. Overall, the demo went well. But, I feel like the zoom feature in Visual Studio Code needs some work. I ended up in iTerm2 using vim to make up for the oddities VSCode threw at me. All the code for the demo is available here: chrisshort/k8s-cron-job-demo ...

Abstract I worked for a large company with several hundred cron jobs running on two systems. Managing these jobs was cumbersome. Resource use during peak times brought things to a halt. Imagine what it was like when systems were down! In this talk, we discuss Kubernetes’ killer feature: Cron Jobs. Description Kubernetes, Jobs, and Cron Jobs What is Kubernetes? Kubernetes has the concept of Jobs Kubernetes Cron Jobs are a relatively new thing Use Case Former employer had several hundred cron jobs running on two systems Resource contention during peak times brought the systems to a halt If one cron job didn’t run it was hard to determine what task failed or didn’t run based on user tickets Chaos if the systems were offline for one reason or another Using minikube and Docker running locally… ...

One of the reasons I stood up a Kubernetes cluster on Raspberry Pis in my house was because of the savings I wanted to gain by not running high-available, redundant infrastructure in the cloud. Kubernetes provides high-availability by design. It’s pretty awesome the possibilities that exist given this capability. Need a web server to constantly run? Build a container and throw it in the Kubernetes cluster. Need a service available all the time? Package it and ship it to the Kubernetes cluster. ...