misc: zot registry, k8s OIDC, server configs, sandbox experiments, and notes

- docker-30/zot: add Zot OCI registry with on-demand sync to docker.io,
  registry.k8s.io, ghcr.io, quay.io
- kubernetes-kvm-terraform: wire Kanidm OIDC via structured
  AuthenticationConfiguration; add reference apiserver manifest and
  join-node-02 helper
- servers: reorganize shadow/ under servers/, add saint vhost config and
  utility-101 VM definition, add shadow hrajfrisbee.cz vhost and
  storage-23 notes
- experiments: add notes and configs for e2b dev VM, kata + firecracker
  on kube, microsandbox, orb-stack k3s (terraform + cloud-init), rke2
- vms/docker: document tailscale + node-exporter setup
- blog: stub post on Gateway API
- chore: gitignore tmp/, smtp_password, and the two local-only
  credential caches; add per-project .claude/settings.json

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

kubernetes-kvm-terraform/files/manifests/kube-apiserver.yaml

@@ -0,0 +1,132 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  annotations:
+    kubeadm.kubernetes.io/kube-apiserver.advertise-address.endpoint: 192.168.0.31:6443
+  creationTimestamp: null
+  labels:
+    component: kube-apiserver
+    tier: control-plane
+  name: kube-apiserver
+  namespace: kube-system
+spec:
+  containers:
+  - command:
+    - kube-apiserver
+    - --advertise-address=192.168.0.31
+    - --allow-privileged=true
+    - --authorization-mode=Node,RBAC
+    - --client-ca-file=/etc/kubernetes/pki/ca.crt
+    - --enable-admission-plugins=NodeRestriction
+    - --enable-bootstrap-token-auth=true
+    - --etcd-cafile=/etc/kubernetes/pki/etcd/ca.crt
+    - --etcd-certfile=/etc/kubernetes/pki/apiserver-etcd-client.crt
+    - --etcd-keyfile=/etc/kubernetes/pki/apiserver-etcd-client.key
+    - --etcd-servers=https://127.0.0.1:2379
+    - --kubelet-client-certificate=/etc/kubernetes/pki/apiserver-kubelet-client.crt
+    - --kubelet-client-key=/etc/kubernetes/pki/apiserver-kubelet-client.key
+    - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname
+    #- --oidc-issuer-url=https://idm.home.hrajfrisbee.cz/oauth2/openid/k8s
+    #- --oidc-client-id=k8s
+    #- --oidc-signing-algs=ES256
+    - --authentication-config=/etc/kubernetes/auth-config.yaml
+    - --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.crt
+    - --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client.key
+    - --requestheader-allowed-names=front-proxy-client
+    - --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt
+    - --requestheader-extra-headers-prefix=X-Remote-Extra-
+    - --requestheader-group-headers=X-Remote-Group
+    - --requestheader-username-headers=X-Remote-User
+    - --secure-port=6443
+    - --service-account-issuer=https://kubernetes.default.svc.cluster.local
+    - --service-account-key-file=/etc/kubernetes/pki/sa.pub
+    - --service-account-signing-key-file=/etc/kubernetes/pki/sa.key
+    - --service-cluster-ip-range=10.96.0.0/12
+    - --tls-cert-file=/etc/kubernetes/pki/apiserver.crt
+    - --tls-private-key-file=/etc/kubernetes/pki/apiserver.key
+    image: registry.k8s.io/kube-apiserver:v1.32.11
+    imagePullPolicy: IfNotPresent
+    livenessProbe:
+      failureThreshold: 8
+      httpGet:
+        host: 192.168.0.31
+        path: /livez
+        port: 6443
+        scheme: HTTPS
+      initialDelaySeconds: 10
+      periodSeconds: 10
+      timeoutSeconds: 15
+    name: kube-apiserver
+    readinessProbe:
+      failureThreshold: 3
+      httpGet:
+        host: 192.168.0.31
+        path: /readyz
+        port: 6443
+        scheme: HTTPS
+      periodSeconds: 1
+      timeoutSeconds: 15
+    resources:
+      requests:
+        cpu: 250m
+    startupProbe:
+      failureThreshold: 24
+      httpGet:
+        host: 192.168.0.31
+        path: /livez
+        port: 6443
+        scheme: HTTPS
+      initialDelaySeconds: 10
+      periodSeconds: 10
+      timeoutSeconds: 15
+    volumeMounts:
+    - mountPath: /etc/ssl/certs
+      name: ca-certs
+      readOnly: true
+    - mountPath: /etc/ca-certificates
+      name: etc-ca-certificates
+      readOnly: true
+    - mountPath: /etc/kubernetes/pki
+      name: k8s-certs
+      readOnly: true
+    - mountPath: /usr/local/share/ca-certificates
+      name: usr-local-share-ca-certificates
+      readOnly: true
+    - mountPath: /usr/share/ca-certificates
+      name: usr-share-ca-certificates
+      readOnly: true
+    - mountPath: /etc/kubernetes
+      name: k8s-config
+      readOnly: true      
+  hostNetwork: true
+  priority: 2000001000
+  priorityClassName: system-node-critical
+  securityContext:
+    seccompProfile:
+      type: RuntimeDefault
+  volumes:
+  - hostPath:
+      path: /etc/ssl/certs
+      type: DirectoryOrCreate
+    name: ca-certs
+  - hostPath:
+      path: /etc/ca-certificates
+      type: DirectoryOrCreate
+    name: etc-ca-certificates
+  - hostPath:
+      path: /etc/kubernetes/pki
+      type: DirectoryOrCreate
+    name: k8s-certs
+  - hostPath:
+      path: /usr/local/share/ca-certificates
+      type: DirectoryOrCreate
+    name: usr-local-share-ca-certificates
+  - hostPath:
+      path: /usr/share/ca-certificates
+      type: DirectoryOrCreate
+    name: usr-share-ca-certificates
+  - hostPath:
+      path: /etc/kubernetes
+      type: DirectoryOrCreate
+    name: k8s-config    
+status: {}