ops(k8s): replace k3s with k8s, provide bootstrap, ty @duckfullstop

k8s/bootstrap.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env -S nix shell nixpkgs#kubernetes-helm --command bash
+echo "Installing flannel (CNI/Network Fabric)"
+kubectl create ns kube-flannel
+kubectl label --overwrite ns kube-flannel pod-security.kubernetes.io/enforce=privileged
+helm repo add flannel https://flannel-io.github.io/flannel/
+helm install flannel --set podCidr="10.42.0.0/16" --namespace kube-flannel flannel/flannel
+echo "Installing CoreDNS (Cluster DNS)"
+helm repo add coredns https://coredns.github.io/helm
+helm --namespace=kube-system install coredns coredns/coredns --set service.clusterIP=10.43.0.2
+echo "Installing ArgoCD (GitOps)"
+helm repo add argo https://argoproj.github.io/argo-helm
+helm install argocd argo/argo-cd --namespace argocd --create-namespace

k8s/system/coredns/application.yaml

@@ -11,9 +11,11 @@ spec:
     chart: coredns
     helm:
       valuesObject:
+        services:
+          clusterIP: 10.43.0.2
   destination:
     namespace: kube-system
     name: in-cluster
   syncPolicy:
     syncOptions:
-      - ServerSideApply=true
+      - ServerSideApply=true