k8s
Posts about kubernetes, kind, helm, etc.
November 23, 2024
Install a Kubernetes Ingress
This is for my own understanding. It might be wrong but reflects my current understanding.
(using kind)
This setup maps ports 80 and 443 from localhost to the ingress. It's like...
November 23, 2024
View Your Current a Kubernetes `kubectl` Cluster Context on the CLI
When I first started using git many years ago, you would be working pretty blind on the command line (and I don't know of any GUI tools at the beginning). So, to make sure you didn't...
November 23, 2024
Kubernetes Helm Releases
This is for my own understanding. Please don't assume it is 100% correct. When releasing with helm, the release name typically stays the same when you then upgrade a Helm chart. The release name...
ReadNovember 23, 2024
Difference Between Kubernetes yaml and Helm Chart
This is for my own understanding. Please don't assume it is 100% correct. A helm chart is an abstraction that allows you to group multiple k8s configuration files into one package and deploy...
ReadNovember 23, 2024
Add a Kubernetes Cluster Context
This is for my own understanding. Please don't assume it is 100% correct.
Each cluster provider will have some sort of kubeconfig command so you can add a context locally, for whatever...
November 14, 2024
Kubernetes `Rollout`
In k8s, you don't "deploy", you "rollout". But, you don't "rollout" either. You either apply a deployment (or do it through helm, preferably), or kubectl create deployment <name>....
November 13, 2024
Kubernetes Scaling
CA - Cluster Autoscaling. VPA - Vertical Pod Autoscaling. HPA - Horizontal Pod Autoscaling. To me, using VPA/HPA alone can’t be much cost savings. At best, it can rearrange the resources you are...
ReadNovember 13, 2024
Kubernetes Cluster Management
This reflects how I currently understand this, and may be incorrect: kops: create k8s clusters that you manage yourself, on whatever provider (AWS, Azure, etc) eksctl: create k8s clusters managed...
ReadNovember 13, 2024
Kubernetes Helm Basics
This is for my own understanding. It might be wrong but reflects my current understanding. Helm is a package manager and templater. It stores whatever info it has about the configuration in the...
ReadNovember 6, 2024
How to Find What Resource to List for `kind:`
When creating an application in kubernetes, there are a lot of values for the kind: field. This is how to find those, and explain them so you know what values should be there.
Example:...
October 25, 2024
Why You Need an HPA for Every Container
HPA = Horizontal Pod Autoscaler. POD You need to configure resource request values for all of your containers in Kubernetes because HPA makes scaling decisions based on those values. It makes those...
ReadOctober 25, 2024
Kubernetes Namespace v Context
This SO answer really helped.
Essentially, a context is just a way to set the namespace on the client side when running kubectl so that you don't have to type out the namespace part of...
October 7, 2024
Kubernetes Hierarchy
Hierarchy: Cluster (parent) --- Nodes Group (collection of machines) ----- Node (machines) ------- Pods (workload units on nodes) --------- Containers (running applications) Think of the Node as...
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