Posts tagged: k8s

This looks like great prototyping tool for k8s. I too often ask ai to get me going with the things I need. I’ve used k8s long enough that I can generally remember all the things I need, roughly where they go, would probably forget a few things and need to iterate, but I cannot remember exactly what goes where and need examples at a minimum. I need to give this a go from desktop and see if it will work for me. Right now looking through mobile looks promising.

k8s-monitoring requires setting imageregistry and pullsecrets twice

Interesting take on kubernetes from a front end perspective. All valid arguments to me, and really the answer to any do you need to any specific implementation of tech is probably no. We got along just fine before k8s ever existed and you still can, but its really nice in a lot of cases. If your skills lean toward backend or infrastructure I encourage you to give it a try.

There are a lot of beginner friendly k8s distros that you can setup with relative ease, kind and k0s are great for single node, If you want multi-node k3s is what I generally use. If you want a very lightweight OS that you only interact with through an api, and has a very small attack surface talos is an amazing product.

Internal, on-prem, self hosted. If you are trying to avoid the cloud for cost, rules, regulations, red tape, kubernetes is a great option to manage your container workflows yourself without needing to have a cloud budget, get approvals and sign offs on running...

I’m trying to learn proper logs, monitoring, otel, and grafana. Today I imported a bunch of pre-made k8s dashboards and made a few of my own for specific apps, and it made me want to know how I can turn my own custom dashboards into infrastructure as code. Turns out grafana makes it pretty easy to do this, if you have the grafana dashboard sidecar running. It will pick up any ConfigMap with the grafana_dashboard label and import it.

Go to Dashboards -> Pick a Dashboard -> Export -> JSON.

Diun, looks like a very interesting tool to monitor for image updates, it does not make any change, it only makes notifications. This feels like an easy start to getting image updates started with low effort, keep git ops, but requires manual updates. I see this as a tool that would be a great start and pair well with automated image updaters to ensure they are working as expected.

Keel looks interesting, I might give it a try as a simple image updater. I’m unsure if it fits my gitops patterns though. I like to keep everything defined in git, I don’t like drift outside of that so Keel might not be the thing I want.

cool article for setting up talos linux with an nvidia gpu. What a wild world it we are living in where these devices that started out being only for hardcore gamers are becoming commonplace in servers and slowly entering the homelab space.

I’ve never seen or needed to use a serversideapply in kubernetes before, but I ran into this same issue in my k3s homelab while installing cloudnative-pg.

You can do it with argo

apiVersion: argoproj.io/v1alpha1 kind: Application spec: syncPolicy: syncOptions: - ServerSideApply=true

and you can do it with kubectl

Keycloak looks like an interesting way to setup sso. It’s part of the cncf so it’s got a good backing. I want something better for argo workflows and this might be it. I’m curious what else I can tie into it.

This setup fixed my nvim syntax highlighting in helm templates.

switching cloud providers, theres no easy way. K8s was supposed to get us there, haha, the deep integrations with each vendor just keep locking us in

This is a really amazing documentary of argocd. I got into k8s pretty late in the game. Which is pretty typical for me. As I went to use k8s for the first time i was using workflows, then cd. both of these tools had a level of polish that made them seem like they had been there forever and not quite as young as they actually are.

I thought it was interesting how they focused on how the name must be two syllables or less, start with a or b, logo needs to be cutesy funny and recognizable seemed interesting, but puts them at the top of lists and makes them look like they’ve been there forever.

Cluster API book

After first setting up a new k3s instance your kubeconfig file will be located in /etc/rancher/k3s/k3s.yaml.

You cans use it from here by setting $KUBECONFIG to that file.

export KUBECONFIG=/etc/rancher/k3s/k3s.yaml

Or you can copy it to ~/.kube/config

cp /etc/rancher/k3s/k3s.yaml ~/.kube/config

If you have installed k3s on a remote server and need the config on your local machine then you will need to modify the server address to reflect the remote server.

...

I’ve started leaning in on kubernetes kustomize to customize my manifests per deployment per environment. Today I learned that it comes with a diff command.

kubectl diff -k k8s/overlays/local

You can enable color diffs by using an external diff provider like colordiff.

export KUBECTL_EXTERNAL_DIFF="colordiff -N -u"

You might need to install colordiff if you don’t already have it.

sudo pacman -S colordiff sudo apt install colordiff

Now I can try out kustomize changes and see the change with kustomize diff.

Great intro into kustomize. This helped me get started with kustomize.