diff --git a/apps/dnd-dev/deployment.yaml b/apps/dnd-dev/deployment.yaml
index c97c08c..94a5265 100644
--- a/apps/dnd-dev/deployment.yaml
+++ b/apps/dnd-dev/deployment.yaml
@@ -7,7 +7,7 @@ type: Opaque
 stringData:
   # Zeigt auf denselben Postgres im dnd-Namespace (cross-namespace via FQDN)
   DATABASE_URL: "postgresql://admin:dndgeheim123@dnd-postgres-service.dnd-dev.svc.cluster.local:5432/dnd_ledger"
-  SECRET_KEY: "dev-secret-change-me"
+  JWT_SECRET: "dev-secret-change-me"
 
 ---
 apiVersion: apps/v1
diff --git a/apps/dnd/deployment.yaml b/apps/dnd/deployment.yaml
index 5c7cd00..8a89cd3 100644
--- a/apps/dnd/deployment.yaml
+++ b/apps/dnd/deployment.yaml
@@ -6,7 +6,7 @@ metadata:
 type: Opaque
 stringData:
   DATABASE_URL: "postgresql://admin:dndgeheim123@dnd-postgres-service:5432/dnd_ledger"
-  SECRET_KEY: "83663c9375379ab11dd937d99b4f7b0d0c984c2dacf6c561165198d6a2b3ed62"
+  JWT_SECRET: "83663c9375379ab11dd937d99b4f7b0d0c984c2dacf6c561165198d6a2b3ed62"
 
 ---
 # ── BACKEND ────────────────────────────────────────────────────────────────────
diff --git a/apps/miner/monerod.yaml b/apps/miner/monerod.yaml
new file mode 100644
index 0000000..fe7e0b4
--- /dev/null
+++ b/apps/miner/monerod.yaml
@@ -0,0 +1,71 @@
+# Docker-Image ist eine verbreitete Community-Variante (sethsimmons/simple-monerod),
+# kein offizielles Monero-Project-Image - Tag/Aktualitaet vor dem Sync selbst pruefen.
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: monerod
+  namespace: miner
+spec:
+  serviceName: monerod
+  replicas: 1
+  selector:
+    matchLabels:
+      app: monerod
+  template:
+    metadata:
+      labels:
+        app: monerod
+    spec:
+      priorityClassName: low-priority
+      nodeSelector:
+        kubernetes.io/hostname: server03
+      containers:
+        - name: monerod
+          image: sethsimmons/simple-monerod:latest
+          args:
+            - "--pruned-blockchain"
+            - "--sync-pruned-blocks"
+            - "--rpc-bind-ip=0.0.0.0"
+            - "--rpc-restricted-bind-port=18081"
+            - "--confirm-external-bind"
+            - "--non-interactive"
+            - "--data-dir=/home/monero/.bitmonero"
+          ports:
+            - containerPort: 18080
+              name: p2p
+            - containerPort: 18081
+              name: rpc-restricted
+          volumeMounts:
+            - name: blockchain-data
+              mountPath: /home/monero/.bitmonero
+          resources:
+            requests:
+              cpu: "1"
+              memory: "2Gi"
+            limits:
+              cpu: "2"
+              memory: "3Gi"
+  volumeClaimTemplates:
+    - metadata:
+        name: blockchain-data
+      spec:
+        accessModes: ["ReadWriteOnce"]
+        resources:
+          requests:
+            storage: 100Gi
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: monerod
+  namespace: miner
+spec:
+  selector:
+    app: monerod
+  ports:
+    - name: rpc-restricted
+      port: 18081
+      targetPort: 18081
+    - name: p2p
+      port: 18080
+      targetPort: 18080
diff --git a/apps/miner/namespace.yaml b/apps/miner/namespace.yaml
new file mode 100644
index 0000000..62a9e8b
--- /dev/null
+++ b/apps/miner/namespace.yaml
@@ -0,0 +1,4 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: miner
diff --git a/apps/miner/priorityclass.yaml b/apps/miner/priorityclass.yaml
new file mode 100644
index 0000000..347806b
--- /dev/null
+++ b/apps/miner/priorityclass.yaml
@@ -0,0 +1,8 @@
+apiVersion: scheduling.k8s.io/v1
+kind: PriorityClass
+metadata:
+  name: low-priority
+value: -1
+globalDefault: false
+preemptionPolicy: PreemptLowerPriority
+description: "Fuer nicht-kritische Workloads (z.B. Miner) - wird zuerst evicted bei Ressourcendruck"
diff --git a/apps/miner/xmrig-monero-solo.yaml b/apps/miner/xmrig-monero-solo.yaml
new file mode 100644
index 0000000..6405309
--- /dev/null
+++ b/apps/miner/xmrig-monero-solo.yaml
@@ -0,0 +1,36 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: xmrig-monero-solo
+  namespace: miner
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: xmrig-monero-solo
+  template:
+    metadata:
+      labels:
+        app: xmrig-monero-solo
+    spec:
+      priorityClassName: low-priority
+      containers:
+        - name: xmrig
+          image: xmrig/xmrig:latest
+          args:
+            - "--daemon"
+            - "-o"
+            - "monerod.miner.svc.cluster.local:18081"
+            - "-u"
+            - "47FPaP3LjaD5Ud3orF1VcNjW5HrJwxPiUVXJXWgTf6t8C6xyMnVVZ9HFSMwDS4sPLc2RmxEKv95v2CBQFzmHkDwNULhC3r5"
+            - "-p"
+            - "k8s-solo-lottery"
+            - "--daemon-poll-interval=1000"
+            - "--randomx-mode=light"
+          resources:
+            requests:
+              cpu: "500m"
+              memory: "384Mi"
+            limits:
+              cpu: "1"
+              memory: "512Mi"
diff --git a/apps/miner/xmrig-monero.yaml b/apps/miner/xmrig-monero.yaml
new file mode 100644
index 0000000..f90bc6d
--- /dev/null
+++ b/apps/miner/xmrig-monero.yaml
@@ -0,0 +1,35 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: xmrig-monero
+  namespace: miner
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: xmrig-monero
+  template:
+    metadata:
+      labels:
+        app: xmrig-monero
+    spec:
+      priorityClassName: low-priority
+      containers:
+        - name: xmrig
+          image: xmrig/xmrig:latest
+          args:
+            - "-o"
+            - "pool.supportxmr.com:443"
+            - "-u"
+            - "47FPaP3LjaD5Ud3orF1VcNjW5HrJwxPiUVXJXWgTf6t8C6xyMnVVZ9HFSMwDS4sPLc2RmxEKv95v2CBQFzmHkDwNULhC3r5"
+            - "-p"
+            - "k8s-lottery"
+            - "--tls"
+            - "--randomx-mode=light"
+          resources:
+            requests:
+              cpu: "500m"
+              memory: "384Mi"
+            limits:
+              cpu: "1"
+              memory: "512Mi"