Add descheduler

This commit is contained in:
Lauri Võsandi 2022-12-23 23:30:39 +02:00
parent d0ac3b0361
commit 5516ad195c

View File

@ -0,0 +1,165 @@
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: descheduler
namespace: kube-system
labels:
app.kubernetes.io/name: descheduler
---
apiVersion: v1
kind: ConfigMap
metadata:
name: descheduler
namespace: kube-system
labels:
app.kubernetes.io/name: descheduler
data:
policy.yaml: |
apiVersion: "descheduler/v1alpha1"
kind: "DeschedulerPolicy"
strategies:
LowNodeUtilization:
enabled: true
params:
nodeResourceUtilizationThresholds:
targetThresholds:
cpu: 50
memory: 50
pods: 50
thresholds:
cpu: 20
memory: 20
pods: 20
RemoveDuplicates:
enabled: true
RemovePodsHavingTooManyRestarts:
enabled: true
params:
podsHavingTooManyRestarts:
includingInitContainers: true
podRestartThreshold: 100
RemovePodsViolatingInterPodAntiAffinity:
enabled: true
RemovePodsViolatingNodeAffinity:
enabled: true
params:
nodeAffinityType:
- requiredDuringSchedulingIgnoredDuringExecution
RemovePodsViolatingNodeTaints:
enabled: true
RemovePodsViolatingTopologySpreadConstraint:
enabled: true
params:
includeSoftConstraints: false
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: descheduler
labels:
app.kubernetes.io/name: descheduler
rules:
- apiGroups: ["events.k8s.io"]
resources: ["events"]
verbs: ["create", "update"]
- apiGroups: [""]
resources: ["nodes"]
verbs: ["get", "watch", "list"]
- apiGroups: [""]
resources: ["namespaces"]
verbs: ["get", "watch", "list"]
- apiGroups: [""]
resources: ["pods"]
verbs: ["get", "watch", "list", "delete"]
- apiGroups: [""]
resources: ["pods/eviction"]
verbs: ["create"]
- apiGroups: ["scheduling.k8s.io"]
resources: ["priorityclasses"]
verbs: ["get", "watch", "list"]
- apiGroups: ["coordination.k8s.io"]
resources: ["leases"]
verbs: ["create", "update"]
- apiGroups: ["coordination.k8s.io"]
resources: ["leases"]
resourceNames: ["descheduler"]
verbs: ["get", "patch", "delete"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: descheduler
labels:
app.kubernetes.io/name: descheduler
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: descheduler
subjects:
- kind: ServiceAccount
name: descheduler
namespace: kube-system
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: descheduler
namespace: kube-system
labels:
app.kubernetes.io/name: descheduler
spec:
replicas: 2
selector:
matchLabels: &selectorLabels
app.kubernetes.io/name: descheduler
template:
metadata:
labels: *selectorLabels
spec:
priorityClassName: system-cluster-critical
serviceAccountName: descheduler
containers:
- name: descheduler
image: "k8s.gcr.io/descheduler/descheduler:v0.25.1"
imagePullPolicy: IfNotPresent
command:
- "/bin/descheduler"
args:
- "--policy-config-file"
- "/policy-dir/policy.yaml"
- "--descheduling-interval"
- 5m
- "--v"
- "3"
- --leader-elect=true
ports:
- containerPort: 10258
protocol: TCP
livenessProbe:
failureThreshold: 3
httpGet:
path: /healthz
port: 10258
scheme: HTTPS
initialDelaySeconds: 3
periodSeconds: 10
resources:
requests:
cpu: 500m
memory: 256Mi
securityContext:
allowPrivilegeEscalation: false
capabilities:
drop:
- ALL
privileged: false
readOnlyRootFilesystem: true
runAsNonRoot: true
volumeMounts:
- mountPath: /policy-dir
name: policy-volume
volumes:
- name: policy-volume
configMap:
name: descheduler