ops: keep scavenger work out of scheduler headroom

infrastructure/descheduler/helmrelease.yaml

@@ -80,17 +80,17 @@ spec:
                 - RemovePodsViolatingNodeAffinity
     priorityClassName: system-cluster-critical
     nodeSelector:
-      node-role.kubernetes.io/worker: "true"
+      node-role.kubernetes.io/control-plane: "true"
     affinity:
       nodeAffinity:
         preferredDuringSchedulingIgnoredDuringExecution:
           - weight: 100
             preference:
               matchExpressions:
-                - key: hardware
+                - key: kubernetes.io/hostname
-                  operator: In
+                  operator: NotIn
                   values:
-                    - rpi5
+                    - titan-0a
     tolerations:
       - key: node-role.kubernetes.io/control-plane
         operator: Exists

services/crypto/xmr-miner/xmrig-daemonset.yaml

@@ -57,7 +57,7 @@ spec:
                 --threads "${THR}" ${EXTRA}
           resources:
             requests:
-              cpu: 10m
+              cpu: "0"
               memory: 32Mi
             limits:
               cpu: 250m