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gitlab, gitlab runners, k3s, and building all the things
Saturday, June 25, 2022
Although originally using Gitea for hosting, and Drone for my CI engine, this setup proved to be difficult. I continually had problems with Done, and actually had the Gitea database corrupt at one point. With all this I decided to just move back to Gitlab. They run a great service, and it’s what we use at work so I am quite familiar with them and their CI/CD setup. I installed the Gitlab Runner on my internal K3s cluster, and am now using that to do all my builds and deployments behind my firewall. I hit a few bumps along the way, so I wanted to document the final setup for posterity and anyone else who might be having issues as well. …more
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nginx-ingress, cert-manager, and default wildcard certificates
Friday, January 28, 2022
I have quite a few internal only services running on my Kubernetes cluster. For all these services I wanted to use SSL, but using the default method of getting an ACME certificate from Let’s Encrypt (HTTP-01) wouldn’t work due to my setup. I also didn’t want to have to generate a certificate for every service I decided to spin up. Using cert-manager I was able to generate an ACME wildcard certificate and then set it to the default certificate on the nginx-ingress. …more
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Kubernetes, Cluster Auto-Scaling and RBAC
Monday, October 23, 2017
We are currently running our Kubernetes infrastructure in AWS using Kops. This provides a lot of advantages, including being able to easily set and use Auto-Scaling Groups (ASGs). Part of the Kubernetes Autoscaler repository is the cluster autoscaler which watches for events on your Kubernetes cluster and responds by scaling up and down nodes needed to run pods. …more
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Using CircleCI workflows to deploy to Kubernetes
Wednesday, July 5, 2017
As I have been continuing to work with CircleCI’s new 2.0 beta I started looking at the workflows recently. These are like Pipelines in Jenkins, that allow for a series of build/test/deploy steps that can be done either sequentially or in parallel depending upon your use case. To set up a true Continuous Integration using this, and the new Keubernetes cluster, I set up a new job to deploy to Kubernetes. It took a little time digging through some documentation between both CircleCI and Kubernetes, so I wanted to share my findings. …more
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My Local Kubernetes Cluster
Friday, May 19, 2017
I’m working on a very large project currently at work that involves Kubernetes. I’ve had quite a bit of time to play with it, and I have been very much enjoying it. Although I run a lot of containerized applications on my local network at home, I have up to this point just been either scheduling the containers by hand, or have been using Rancher as my main scheduler. Honestly though, I have been so impressed with Kubernetes that I finally decided that I should spin up a local cluster for me to use in my homelab. Although it looked pretty straight forward, and really in the end it was, I ran into a number of issues that I wanted to touch on. Two caveats before we get started. First, this is only intended for spinning up Kubernetes on your own VMs, Baremetal, or Linode/Digial Ocean type of boxes. There are way better tools out there if you want to install a cluster in AWS (see Kops). Second, I will be focusing on using CentOS7 as the base operating system. …more