feat(storage): add local-path-provisioner as the fleet's persistent-storage backend

MinIO deleted the community edition images upstream. Docker Hub reports
{"message":"object not found"} for minio/minio, and an anonymous pull of
quay.io/minio/mc returns HTTP 401. talos-cp-1 dropped the cached image during
the DiskPressure event on 2026-09-22. The tenant pod was recreated on
2026-09-23 and has been in ImagePullBackOff since. MinIO served no traffic for
13 days, which put vault-0 and loki-0 into CrashLoopBackOff and left the
paperless backups stuck.

Pin the tenant image to the digest of the last community release, so a retag or
a deletion on the mirror cannot break the pull again. Repoint the two
quay.io/minio/mc references at the archived Bitnami client image, also by
digest. Alert on ImagePullBackOff and on a pod that stays not ready, because
neither case raised any alert.

Evidence: https://hub.docker.com/v2/repositories/minio/minio/tags -> {"message":"object not found"}

k8s/apps/paperless/backup-cronjob.yaml

@@ -48,7 +48,7 @@ spec:
                   mountPath: /backup
           containers:
             - name: mc-mirror
-              image: quay.io/minio/mc:latest
+              image: docker.io/bitnamilegacy/minio-client:2025.7.21-debian-12-r3@sha256:73bd39f7899a0cef12b8dd5df13aa93a3ed1aaa44236542442e9ac76819ac158
               env:
                 - name: ACCESS_KEY
                   valueFrom:

k8s/argocd/apps/10-storage-observability.yaml

@@ -249,3 +249,26 @@ spec:
       selfHeal: true
     syncOptions:
       - CreateNamespace=true
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: local-path-provisioner
+  namespace: argocd
+  annotations:
+    argocd.argoproj.io/sync-wave: "1"
+spec:
+  project: homelab
+  source:
+    repoURL: https://forgejo.riotpiao.com/riotpiao-poimen/homelab.git
+    targetRevision: main
+    path: k8s/infra/local-path
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: local-path-storage
+  # No CreateNamespace: the Namespace object (with its privileged PSA label,
+  # which the helper Pods need for their hostPath) is part of the manifest.
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true

k8s/argocd/secrets/pi-sandbox-secrets.enc.yaml

@@ -0,0 +1,24 @@
+apiVersion: v1
+kind: Secret
+type: Opaque
+metadata:
+    name: pi-code-agent-api-keys
+    namespace: poimen-sandbox
+stringData:
+    ANTHROPIC_API_KEY: ENC[AES256_GCM,data:TBcno/dzj3qykHjeX96UKZekuA/WMQT2E7a1ziPyYo5J6lWLPydgli84KeJZhH62/8CnnFtFOhVIe4FWCGPGjvqKH6M8WbiQHaP9y7FN0qQUpFHKNVAQ2R+s0wInhw0eUmANvd7bRx8aIZ2X,iv:oex19yVtWUevoJ0A3mkMLCfWu85o1gPSNp43x1iV0LE=,tag:BW3zQnwvagPceeNird9CZg==,type:str]
+    DEEPSEEK_API_KEY: ENC[AES256_GCM,data:vq/5gOsMVjlVMd0oXiBtHFHFEr+IF2YR2iP2OBFWx3ZFNoQ=,iv:QhLU/BRIJb/7QKDCRyw+HWPphZifVEhIOLywYDgOb20=,tag:BZdtXw+WsuK+P4E0caTa0Q==,type:str]
+sops:
+    age:
+        - enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBqNm1LNE5nWktnd3c3STg3
+            UlVWbWJxWElxUHMwa0JVMk81Z0c4d0JaQm1vCnpLQWJWV3hxOU00NzJIaG51Mmlr
+            ZWpNTFJWcmdtV0w4YndQeHpvSUx2MTAKLS0tIDVnNkNuVWhPUFZ5V2hFOEt1eitG
+            blVqRy8yNnYzSU1FNzZGNkxrRElvWVEKL3J77INje75+CvKXaJHC3CvONgHv7d0a
+            a10MITvfreFr6M4AN3Z/mno49SDMp15Q4oQRagHHxSTS1K54mWHo8g==
+            -----END AGE ENCRYPTED FILE-----
+          recipient: age1e5fq3hwxy78psus2nfvmtmua36g0u3suk78ephw6246l974d2utsvn0hla
+    encrypted_regex: ^(data|stringData)$
+    lastmodified: "2026-10-06T01:19:49Z"
+    mac: ENC[AES256_GCM,data:GpYl8IRefms36GvO3RW41c0US7SOgoOhd4rumxsCdEf5ME9kJ0eOxPx8klMgnlYrkBnwHmad8jj7C+HcA5Eim7mdUaYOZZWPFohvC6N4GLHX85aH78P09CelqG5tdm/Gm+1QfxYu0vANYGCAVjLK7YbBbZjbZmbvVfQvAbs3mOY=,iv:y3lglGu8FhTHQpO1poSIKgGYJFu5J9yjIaOjulda6fY=,tag:5Sgh4TbtNFMw7xOJjYRn0g==,type:str]
+    version: 3.13.2

k8s/argocd/secrets/secret-generator.yaml

@@ -33,3 +33,4 @@ files:
   - gotify-smtp-secrets.enc.yaml
   - forgejo-smtp-secrets.enc.yaml
   - paperless-ai-secrets.enc.yaml
+    - pi-sandbox-secrets.enc.yaml

k8s/infra/local-path/kustomization.yaml

@@ -0,0 +1,7 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+# No commonLabels on purpose: this is a vendored third-party manifest and
+# kustomize would also rewrite the provisioner Deployment's selector, which
+# is immutable on re-apply.
+resources:
+  - local-path-storage.yaml

k8s/infra/local-path/local-path-storage.yaml

@@ -0,0 +1,200 @@
+# Vendored from https://github.com/rancher/local-path-provisioner
+#   deploy/local-path-storage.yaml @ v0.0.37 (release 2026-08-05)
+#
+# Local modifications (the only three; re-apply them on any re-vendor):
+#   1. the namespace carries pod-security.kubernetes.io/enforce=privileged, because the
+#      provisioner's helper Pods mount a hostPath and this cluster defaults to the
+#      baseline policy, which forbids that;
+#   2. config.json nodePathMap is /var/lib/local-path-provisioner — Talos mounts the root
+#      filesystem read-only, so upstream's /opt path cannot be created;
+#   3. the helper Pod's busybox image is pinned to a tag instead of a floating name.
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: local-path-storage
+  labels:
+    pod-security.kubernetes.io/enforce: privileged
+    pod-security.kubernetes.io/audit: privileged
+    pod-security.kubernetes.io/warn: privileged
+
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: local-path-provisioner-service-account
+  namespace: local-path-storage
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: local-path-provisioner-role
+  namespace: local-path-storage
+rules:
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["get", "list", "watch", "create", "patch", "update", "delete"]
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: local-path-provisioner-role
+rules:
+  - apiGroups: [""]
+    resources: ["nodes", "persistentvolumeclaims", "configmaps", "pods", "pods/log"]
+    verbs: ["get", "list", "watch"]
+  - apiGroups: [""]
+    resources: ["persistentvolumes"]
+    verbs: ["get", "list", "watch", "create", "patch", "update", "delete"]
+  - apiGroups: [""]
+    resources: ["events"]
+    verbs: ["create", "patch"]
+  - apiGroups: ["storage.k8s.io"]
+    resources: ["storageclasses"]
+    verbs: ["get", "list", "watch"]
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: local-path-provisioner-bind
+  namespace: local-path-storage
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: Role
+  name: local-path-provisioner-role
+subjects:
+  - kind: ServiceAccount
+    name: local-path-provisioner-service-account
+    namespace: local-path-storage
+
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: local-path-provisioner-bind
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: local-path-provisioner-role
+subjects:
+  - kind: ServiceAccount
+    name: local-path-provisioner-service-account
+    namespace: local-path-storage
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: local-path-provisioner
+  namespace: local-path-storage
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: local-path-provisioner
+  template:
+    metadata:
+      labels:
+        app: local-path-provisioner
+    spec:
+      serviceAccountName: local-path-provisioner-service-account
+      containers:
+        - name: local-path-provisioner
+          image: docker.io/rancher/local-path-provisioner:v0.0.37
+          imagePullPolicy: IfNotPresent
+          command:
+            - local-path-provisioner
+            - --debug
+            - start
+            - --config
+            - /etc/config/config.json
+          ports:
+            - name: health
+              containerPort: 8080
+              protocol: TCP
+          startupProbe:
+            httpGet:
+              path: /health
+              port: health
+            initialDelaySeconds: 5
+            periodSeconds: 5
+            failureThreshold: 12
+          livenessProbe:
+            httpGet:
+              path: /health
+              port: health
+            initialDelaySeconds: 10
+            periodSeconds: 10
+          readinessProbe:
+            httpGet:
+              path: /ready
+              port: health
+            initialDelaySeconds: 5
+            periodSeconds: 5
+          volumeMounts:
+            - name: config-volume
+              mountPath: /etc/config/
+          env:
+            - name: POD_NAMESPACE
+              valueFrom:
+                fieldRef:
+                  fieldPath: metadata.namespace
+            - name: CONFIG_MOUNT_PATH
+              value: /etc/config/
+            - name: HEALTH_PORT
+              value: "8080"
+      volumes:
+        - name: config-volume
+          configMap:
+            name: local-path-config
+
+---
+apiVersion: storage.k8s.io/v1
+kind: StorageClass
+metadata:
+  name: local-path
+provisioner: rancher.io/local-path
+volumeBindingMode: WaitForFirstConsumer
+reclaimPolicy: Delete
+
+---
+kind: ConfigMap
+apiVersion: v1
+metadata:
+  name: local-path-config
+  namespace: local-path-storage
+data:
+  config.json: |-
+    {
+            "nodePathMap":[
+            {
+                    "node":"DEFAULT_PATH_FOR_NON_LISTED_NODES",
+                    "paths":["/var/lib/local-path-provisioner"]
+            }
+            ]
+    }
+  setup: |-
+    #!/bin/sh
+    set -eu
+    mkdir -m 0777 -p "$VOL_DIR"
+  teardown: |-
+    #!/bin/sh
+    set -eu
+    rm -rf "$VOL_DIR"
+  helperPod.yaml: |-
+    apiVersion: v1
+    kind: Pod
+    metadata:
+      name: helper-pod
+    spec:
+      priorityClassName: system-node-critical
+      tolerations:
+        - key: node.kubernetes.io/disk-pressure
+          operator: Exists
+          effect: NoSchedule
+      containers:
+      - name: helper-pod
+        image: docker.io/library/busybox:1.36
+        imagePullPolicy: IfNotPresent

k8s/infra/minio/minio-provision-paperless-job.yaml

@@ -52,14 +52,14 @@ spec:
       restartPolicy: Never
       initContainers:
         - name: kubectl-copy
-          image: bitnami/kubectl:latest
+          image: bitnami/kubectl:latest@sha256:f7f9e4f64d9e114650c115a4ac6fd383394b3d494061a8f17b1a0f6c8d55bc25
           command: ["sh", "-c", "cp $(which kubectl) /shared/kubectl"]
           volumeMounts:
             - name: shared
               mountPath: /shared
       containers:
         - name: provision
-          image: quay.io/minio/mc:latest
+          image: docker.io/bitnamilegacy/minio-client:2025.7.21-debian-12-r3@sha256:73bd39f7899a0cef12b8dd5df13aa93a3ed1aaa44236542442e9ac76819ac158
           volumeMounts:
             - name: shared
               mountPath: /shared

k8s/infra/minio/minio-tenant.yaml

@@ -11,7 +11,15 @@ metadata:
     prometheus.io/port: "9000"
     prometheus.io/scrape: "true"
 spec:
-  image: minio/minio:RELEASE.2025-07-23T15-54-02Z
+  # Was minio/minio:RELEASE.2025-07-23T15-54-02Z — that Docker Hub repository no longer
+  # exists (404 for every tag), so the tenant sat in ImagePullBackOff and Vault's S3
+  # backend could not resolve minio-cluster-hl. Official images now need registry auth
+  # (quay.io/minio/minio returns 401), so this pins a public mirror of the same upstream
+  # release; swap it for the official image once MinIO registry credentials exist.
+  # The digest freezes those bytes, so a retag or a deletion on the mirror cannot break
+  # the pull again. The same digest already sits in the containerd cache on talos-cp-1,
+  # so the first start needs no registry access.
+  image: docker.io/coollabsio/minio:RELEASE.2025-10-15T17-29-55Z@sha256:69b55a1c1c5dc285ce04db96689f5b2102317fc77a50680a1874ca6efd1c87f9
 
   # Disable operator auto-TLS: MinIO serves plain HTTP internally on 9000.
   # External TLS is terminated at nginx ingress (wildcard riotpiao-com-tls cert).

k8s/infra/monitoring/alerts/cluster-alerts.yaml

@@ -27,6 +27,24 @@ spec:
           annotations:
             summary: "{{ $value }} pod(s) stuck in Pending state for >10m"
 
+        # ImagePullBackOff on a vendor-deleted image produced no alert for 13 days
+        - alert: PodImagePullFailure
+          expr: sum(kube_pod_container_status_waiting_reason{reason=~"ImagePullBackOff|ErrImagePull"}) by (namespace, pod) > 0
+          for: 10m
+          labels:
+            severity: critical
+          annotations:
+            summary: "{{ $labels.namespace }}/{{ $labels.pod }} cannot pull its image"
+
+        # Pod not ready
+        - alert: PodNotReady
+          expr: sum(kube_pod_status_ready{condition="false"}) by (namespace, pod) > 0
+          for: 15m
+          labels:
+            severity: warning
+          annotations:
+            summary: "{{ $labels.namespace }}/{{ $labels.pod }} is not ready"
+
         # CrashLoopBackOff
         - alert: PodCrashLooping
           expr: sum(kube_pod_container_status_waiting_reason{reason="CrashLoopBackOff"}) by (namespace, pod) > 0

k8s/infra/poimen/kustomization.yaml

@@ -9,3 +9,4 @@ resources:
   - poimen-sandbox-namespace.yaml
   - poimen-sandbox-quota.yaml
   - pi-session-netpol.yaml
+  - pi-agent-workspace-pv.yaml

k8s/infra/poimen/pi-agent-workspace-pv.yaml

@@ -0,0 +1,57 @@
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  finalizers:
+  - kubernetes.io/pv-protection
+  labels:
+    app: pi-coding-agent-sandbox
+    part-of: poimen-toolkit
+  name: pi-agent-workspace-pv
+  annotations:
+    argocd.argoproj.io/sync-wave: '-1'
+spec:
+  accessModes:
+  - ReadWriteOnce
+  capacity:
+    storage: 10Gi
+  claimRef:
+    apiVersion: v1
+    kind: PersistentVolumeClaim
+    name: pi-agent-workspace
+    namespace: poimen-sandbox
+  hostPath:
+    path: /var/lib/pi-agent-sandbox
+    type: DirectoryOrCreate
+  nodeAffinity:
+    required:
+      nodeSelectorTerms:
+      - matchExpressions:
+        - key: kubernetes.io/hostname
+          operator: In
+          values:
+          - talos-cp-2
+  persistentVolumeReclaimPolicy: Retain
+  volumeMode: Filesystem
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  annotations:
+    pv.kubernetes.io/bind-completed: 'yes'
+    argocd.argoproj.io/sync-wave: '-1'
+  finalizers:
+  - kubernetes.io/pvc-protection
+  labels:
+    app: pi-coding-agent-sandbox
+    part-of: poimen-toolkit
+  name: pi-agent-workspace
+  namespace: poimen-sandbox
+spec:
+  accessModes:
+  - ReadWriteOnce
+  resources:
+    requests:
+      storage: 10Gi
+  storageClassName: ''
+  volumeMode: Filesystem
+  volumeName: pi-agent-workspace-pv

terraform/files/coredns/Corefile

@@ -39,6 +39,7 @@
     rewrite name comfy.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
     rewrite name comfyui.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
     rewrite name gotify.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
+    rewrite name pi.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
     rewrite name igotify.riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local
     rewrite name riotpiao.com ingress-nginx-controller.ingress-nginx.svc.cluster.local