updated systems: descheduler runs at root....

_sys/descheduler-cronjob.yaml

@@ -0,0 +1,47 @@
+---
+apiVersion: batch/v1beta1
+kind: CronJob
+metadata:
+  name: descheduler-cronjob
+  namespace: kube-system
+spec:
+  schedule: "*/2 * * * *"
+  concurrencyPolicy: "Forbid"
+  jobTemplate:
+    spec:
+      template:
+        metadata:
+          name: descheduler-pod
+        spec:
+          priorityClassName: system-cluster-critical
+          containers:
+          - name: descheduler
+            image: k8s.gcr.io/descheduler/descheduler:v0.20.0
+            volumeMounts:
+            - mountPath: /policy-dir
+              name: policy-volume
+            command:
+              - "/bin/descheduler"
+            args:
+              - "--policy-config-file"
+              - "/policy-dir/policy.yaml"
+              - "--v"
+              - "3"
+            resources:
+              requests:
+                cpu: "500m"
+                memory: "256Mi"
+            securityContext:
+              allowPrivilegeEscalation: false
+              capabilities:
+                drop:
+                  - ALL
+              privileged: false
+              readOnlyRootFilesystem: true
+              runAsNonRoot: false 
+          restartPolicy: "Never"
+          serviceAccountName: descheduler-sa
+          volumes:
+          - name: policy-volume
+            configMap:
+              name: descheduler-policy-configmap

_sys/descheduler-policy-configmap.yaml

@@ -0,0 +1,27 @@
+kind: ConfigMap
+apiVersion: v1
+metadata:
+  name: descheduler-policy-configmap
+  namespace: kube-system
+data:
+  policy.yaml: |
+    apiVersion: "descheduler/v1alpha1"
+    kind: "DeschedulerPolicy"
+    strategies:
+      "RemoveDuplicates":
+         enabled: true
+      "RemovePodsViolatingInterPodAntiAffinity":
+         enabled: false 
+      "LowNodeUtilization":
+         enabled: true
+         params:
+           nodeResourceUtilizationThresholds:
+             thresholds:
+               "cpu": 30
+               "memory": 30
+               "pods": 10 
+             targetThresholds:
+               "cpu": 70
+               "memory": 70
+               "pods": 15
+