From ac4282a6c51dd46fe216941e88c959f0cbbb7f55 Mon Sep 17 00:00:00 2001
From: Joseph Hanson <joe@veri.dev>
Date: Mon, 21 Oct 2024 09:18:53 -0500
Subject: [PATCH] add descheduler

---
 .../descheduler/app/helmrelease.yaml          | 64 +++++++++++++++++++
 .../descheduler/app/kustomization.yaml        |  6 ++
 .../apps/kube-system/descheduler/ks.yaml      | 20 ++++++
 .../apps/kube-system/kustomization.yaml       |  1 +
 4 files changed, 91 insertions(+)
 create mode 100644 kubernetes/apps/kube-system/descheduler/app/helmrelease.yaml
 create mode 100644 kubernetes/apps/kube-system/descheduler/app/kustomization.yaml
 create mode 100644 kubernetes/apps/kube-system/descheduler/ks.yaml

diff --git a/kubernetes/apps/kube-system/descheduler/app/helmrelease.yaml b/kubernetes/apps/kube-system/descheduler/app/helmrelease.yaml
new file mode 100644
index 00000000..1d53f1e7
--- /dev/null
+++ b/kubernetes/apps/kube-system/descheduler/app/helmrelease.yaml
@@ -0,0 +1,64 @@
+---
+# yaml-language-server: $schema=https://ks.hsn.dev/helm.toolkit.fluxcd.io/helmrelease_v2.json
+apiVersion: helm.toolkit.fluxcd.io/v2
+kind: HelmRelease
+metadata:
+  name: descheduler
+spec:
+  interval: 30m
+  chart:
+    spec:
+      chart: descheduler
+      version: 0.31.0
+      sourceRef:
+        kind: HelmRepository
+        name: descheduler
+        namespace: flux-system
+  install:
+    remediation:
+      retries: 3
+  upgrade:
+    cleanupOnFail: true
+    remediation:
+      strategy: rollback
+      retries: 3
+  values:
+    replicas: 2
+    kind: Deployment
+    deschedulerPolicyAPIVersion: descheduler/v1alpha2
+    deschedulerPolicy:
+      profiles:
+        - name: Default
+          pluginConfig:
+            - name: DefaultEvictor
+              args:
+                evictFailedBarePods: true
+                evictLocalStoragePods: true
+                evictSystemCriticalPods: true
+                nodeFit: true
+            - name: RemovePodsViolatingInterPodAntiAffinity
+            - name: RemovePodsViolatingNodeAffinity
+              args:
+                nodeAffinityType:
+                  - requiredDuringSchedulingIgnoredDuringExecution
+            - name: RemovePodsViolatingNodeTaints
+            - name: RemovePodsViolatingTopologySpreadConstraint
+              args:
+                constraints:
+                  - DoNotSchedule
+                  - ScheduleAnyway
+          plugins:
+            balance:
+              enabled:
+                - RemovePodsViolatingTopologySpreadConstraint
+            deschedule:
+              enabled:
+                - RemovePodsViolatingInterPodAntiAffinity
+                - RemovePodsViolatingNodeAffinity
+                - RemovePodsViolatingNodeTaints
+    service:
+      enabled: true
+    serviceMonitor:
+      enabled: true
+    leaderElection:
+      enabled: true
diff --git a/kubernetes/apps/kube-system/descheduler/app/kustomization.yaml b/kubernetes/apps/kube-system/descheduler/app/kustomization.yaml
new file mode 100644
index 00000000..17cbc72b
--- /dev/null
+++ b/kubernetes/apps/kube-system/descheduler/app/kustomization.yaml
@@ -0,0 +1,6 @@
+---
+# yaml-language-server: $schema=https://json.schemastore.org/kustomization
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - ./helmrelease.yaml
diff --git a/kubernetes/apps/kube-system/descheduler/ks.yaml b/kubernetes/apps/kube-system/descheduler/ks.yaml
new file mode 100644
index 00000000..5cbb41e2
--- /dev/null
+++ b/kubernetes/apps/kube-system/descheduler/ks.yaml
@@ -0,0 +1,20 @@
+---
+# yaml-language-server: $schema=https://kubernetes-schemas.pages.dev/kustomize.toolkit.fluxcd.io/kustomization_v1.json
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: &app descheduler
+  namespace: flux-system
+spec:
+  targetNamespace: kube-system
+  commonMetadata:
+    labels:
+      app.kubernetes.io/name: *app
+  path: ./kubernetes/apps/kube-system/descheduler/app
+  prune: true
+  sourceRef:
+    kind: GitRepository
+    name: theshire
+  wait: false
+  interval: 30m
+  timeout: 5m
diff --git a/kubernetes/apps/kube-system/kustomization.yaml b/kubernetes/apps/kube-system/kustomization.yaml
index 60721059..8abd0af6 100644
--- a/kubernetes/apps/kube-system/kustomization.yaml
+++ b/kubernetes/apps/kube-system/kustomization.yaml
@@ -8,6 +8,7 @@ resources:
   # Flux-Kustomizations
   - ./cilium/ks.yaml
   - ./coredns/ks.yaml
+  - ./descheduler/ks.yaml
   - ./dnsimple-webhook-rbac.yaml
   - ./fstrim/ks.yaml
   - ./kubelet-csr-approver/ks.yaml