add descheduler helm

This commit is contained in:
2025-04-13 11:27:16 +02:00
parent 687b6585e6
commit db25c37cde
15 changed files with 912 additions and 0 deletions

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Descheduler installed as a {{ .Values.kind }}.
{{- if eq .Values.kind "Deployment" }}
{{- if eq (.Values.replicas | int) 1 }}
WARNING: You set replica count as 1 and workload kind as Deployment however leaderElection is not enabled. Consider enabling Leader Election for HA mode.
{{- end}}
{{- if .Values.leaderElection }}
{{- if and (hasKey .Values.cmdOptions "dry-run") (eq (get .Values.cmdOptions "dry-run") true) }}
WARNING: You enabled DryRun mode, you can't use Leader Election.
{{- end}}
{{- end}}
{{- end}}

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{{/* vim: set filetype=mustache: */}}
{{/*
Expand the name of the chart.
*/}}
{{- define "descheduler.name" -}}
{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{/*
Create a default fully qualified app name.
We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
If release name contains chart name it will be used as a full name.
*/}}
{{- define "descheduler.fullname" -}}
{{- if .Values.fullnameOverride -}}
{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- $name := default .Chart.Name .Values.nameOverride -}}
{{- if contains $name .Release.Name -}}
{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{- end -}}
{{- end -}}
{{/*
Expand the namespace of the release.
Allows overriding it for multi-namespace deployments in combined charts.
*/}}
{{- define "descheduler.namespace" -}}
{{- default .Release.Namespace .Values.namespaceOverride | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{/*
Create chart name and version as used by the chart label.
*/}}
{{- define "descheduler.chart" -}}
{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{/*
Common labels
*/}}
{{- define "descheduler.labels" -}}
app.kubernetes.io/name: {{ include "descheduler.name" . }}
helm.sh/chart: {{ include "descheduler.chart" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
{{- if .Chart.AppVersion }}
app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
{{- end }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
{{- if .Values.commonLabels}}
{{ toYaml .Values.commonLabels }}
{{- end }}
{{- end -}}
{{/*
Selector labels
*/}}
{{- define "descheduler.selectorLabels" -}}
app.kubernetes.io/name: {{ include "descheduler.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
{{- end -}}
{{/*
Create the name of the service account to use
*/}}
{{- define "descheduler.serviceAccountName" -}}
{{- if .Values.serviceAccount.create -}}
{{ default (include "descheduler.fullname" .) .Values.serviceAccount.name }}
{{- else -}}
{{ default "default" .Values.serviceAccount.name }}
{{- end -}}
{{- end -}}
{{/*
Leader Election
*/}}
{{- define "descheduler.leaderElection"}}
{{- if .Values.leaderElection -}}
- --leader-elect={{ .Values.leaderElection.enabled }}
{{- if .Values.leaderElection.leaseDuration }}
- --leader-elect-lease-duration={{ .Values.leaderElection.leaseDuration }}
{{- end }}
{{- if .Values.leaderElection.renewDeadline }}
- --leader-elect-renew-deadline={{ .Values.leaderElection.renewDeadline }}
{{- end }}
{{- if .Values.leaderElection.retryPeriod }}
- --leader-elect-retry-period={{ .Values.leaderElection.retryPeriod }}
{{- end }}
{{- if .Values.leaderElection.resourceLock }}
- --leader-elect-resource-lock={{ .Values.leaderElection.resourceLock }}
{{- end }}
{{- if .Values.leaderElection.resourceName }}
- --leader-elect-resource-name={{ .Values.leaderElection.resourceName }}
{{- end }}
{{/* resource namespace value starts with a typo so keeping resourceNamescape for backwards compatibility */}}
{{- $resourceNamespace := default .Values.leaderElection.resourceNamespace .Values.leaderElection.resourceNamescape -}}
{{- if $resourceNamespace -}}
- --leader-elect-resource-namespace={{ $resourceNamespace }}
{{- end -}}
{{- end }}
{{- end }}

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{{- if .Values.rbac.create -}}
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: {{ template "descheduler.fullname" . }}
labels:
{{- include "descheduler.labels" . | nindent 4 }}
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: ["policy"]
resources: ["poddisruptionbudgets"]
verbs: ["get", "watch", "list"]
{{- if .Values.leaderElection.enabled }}
- apiGroups: ["coordination.k8s.io"]
resources: ["leases"]
verbs: ["create", "update"]
- apiGroups: ["coordination.k8s.io"]
resources: ["leases"]
resourceNames: ["{{ .Values.leaderElection.resourceName | default "descheduler" }}"]
verbs: ["get", "patch", "delete"]
{{- end }}
{{- if and .Values.deschedulerPolicy .Values.deschedulerPolicy.metricsCollector .Values.deschedulerPolicy.metricsCollector.enabled }}
- apiGroups: ["metrics.k8s.io"]
resources: ["pods", "nodes"]
verbs: ["get", "list"]
{{- end }}
{{- end -}}

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{{- if .Values.rbac.create -}}
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: {{ template "descheduler.fullname" . }}
labels:
{{- include "descheduler.labels" . | nindent 4 }}
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: {{ template "descheduler.fullname" . }}
subjects:
- kind: ServiceAccount
name: {{ template "descheduler.serviceAccountName" . }}
namespace: {{ include "descheduler.namespace" . }}
{{- end -}}

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{{- if .Values.deschedulerPolicy }}
apiVersion: v1
kind: ConfigMap
metadata:
name: {{ template "descheduler.fullname" . }}
namespace: {{ include "descheduler.namespace" . }}
labels:
{{- include "descheduler.labels" . | nindent 4 }}
data:
policy.yaml: |
apiVersion: "{{ .Values.deschedulerPolicyAPIVersion }}"
kind: "DeschedulerPolicy"
{{ toYaml .Values.deschedulerPolicy | trim | indent 4 }}
{{- end }}

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{{- if eq .Values.kind "CronJob" }}
apiVersion: {{ .Values.cronJobApiVersion | default "batch/v1" }}
kind: CronJob
metadata:
name: {{ template "descheduler.fullname" . }}
namespace: {{ include "descheduler.namespace" . }}
labels:
{{- include "descheduler.labels" . | nindent 4 }}
spec:
schedule: {{ .Values.schedule | quote }}
{{- if .Values.suspend }}
suspend: {{ .Values.suspend }}
{{- end }}
concurrencyPolicy: "Forbid"
{{- if .Values.startingDeadlineSeconds }}
startingDeadlineSeconds: {{ .Values.startingDeadlineSeconds }}
{{- end }}
{{- if ne .Values.successfulJobsHistoryLimit nil }}
successfulJobsHistoryLimit: {{ .Values.successfulJobsHistoryLimit }}
{{- end }}
{{- if ne .Values.failedJobsHistoryLimit nil }}
failedJobsHistoryLimit: {{ .Values.failedJobsHistoryLimit }}
{{- end }}
{{- if .Values.timeZone }}
timeZone: {{ .Values.timeZone }}
{{- end }}
jobTemplate:
spec:
{{- if .Values.ttlSecondsAfterFinished }}
ttlSecondsAfterFinished: {{ .Values.ttlSecondsAfterFinished }}
{{- end }}
template:
metadata:
name: {{ template "descheduler.fullname" . }}
annotations:
checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
{{- if .Values.podAnnotations }}
{{- .Values.podAnnotations | toYaml | nindent 12 }}
{{- end }}
labels:
{{- include "descheduler.selectorLabels" . | nindent 12 }}
{{- if .Values.podLabels }}
{{- .Values.podLabels | toYaml | nindent 12 }}
{{- end }}
spec:
{{- with .Values.nodeSelector }}
nodeSelector:
{{- toYaml . | nindent 12 }}
{{- end }}
{{- with .Values.affinity }}
affinity:
{{- toYaml . | nindent 12 }}
{{- end }}
{{- with .Values.topologySpreadConstraints }}
topologySpreadConstraints:
{{- toYaml . | nindent 12 }}
{{- end }}
{{- if .Values.dnsConfig }}
dnsConfig:
{{- .Values.dnsConfig | toYaml | nindent 12 }}
{{- end }}
{{- with .Values.tolerations }}
tolerations:
{{- toYaml . | nindent 12 }}
{{- end }}
{{- if .Values.priorityClassName }}
priorityClassName: {{ .Values.priorityClassName }}
{{- end }}
serviceAccountName: {{ template "descheduler.serviceAccountName" . }}
restartPolicy: "Never"
{{- with .Values.imagePullSecrets }}
imagePullSecrets:
{{- toYaml . | nindent 10 }}
{{- end }}
containers:
- name: {{ .Chart.Name }}
image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default (printf "v%s" .Chart.AppVersion) }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
command:
{{- toYaml .Values.command | nindent 16 }}
args:
- --policy-config-file=/policy-dir/policy.yaml
{{- range $key, $value := .Values.cmdOptions }}
{{- if ne $value nil }}
- {{ printf "--%s=%s" $key (toString $value) }}
{{- else }}
- {{ printf "--%s" $key }}
{{- end }}
{{- end }}
livenessProbe:
{{- toYaml .Values.livenessProbe | nindent 16 }}
ports:
{{- toYaml .Values.ports | nindent 16 }}
resources:
{{- toYaml .Values.resources | nindent 16 }}
{{- if .Values.securityContext }}
securityContext:
{{- toYaml .Values.securityContext | nindent 16 }}
{{- end }}
volumeMounts:
- mountPath: /policy-dir
name: policy-volume
{{- if .Values.podSecurityContext }}
securityContext:
{{- toYaml .Values.podSecurityContext | nindent 12 }}
{{- end }}
volumes:
- name: policy-volume
configMap:
name: {{ template "descheduler.fullname" . }}
{{- end }}

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{{- if eq .Values.kind "Deployment" }}
apiVersion: apps/v1
kind: Deployment
metadata:
name: {{ template "descheduler.fullname" . }}
namespace: {{ include "descheduler.namespace" . }}
labels:
{{- include "descheduler.labels" . | nindent 4 }}
spec:
{{- if gt (.Values.replicas | int) 1 }}
{{- if not .Values.leaderElection.enabled }}
{{- fail "You must set leaderElection to use more than 1 replica"}}
{{- end}}
replicas: {{ required "leaderElection required for running more than one replica" .Values.replicas }}
{{- else }}
replicas: 1
{{- end }}
selector:
matchLabels:
{{- include "descheduler.selectorLabels" . | nindent 6 }}
template:
metadata:
labels:
{{- include "descheduler.selectorLabels" . | nindent 8 }}
{{- if .Values.podLabels }}
{{- .Values.podLabels | toYaml | nindent 8 }}
{{- end }}
annotations:
checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
{{- if .Values.podAnnotations }}
{{- .Values.podAnnotations | toYaml | nindent 8 }}
{{- end }}
spec:
{{- if .Values.dnsConfig }}
dnsConfig:
{{- .Values.dnsConfig | toYaml | nindent 8 }}
{{- end }}
{{- if .Values.priorityClassName }}
priorityClassName: {{ .Values.priorityClassName }}
{{- end }}
serviceAccountName: {{ template "descheduler.serviceAccountName" . }}
{{- with .Values.imagePullSecrets }}
imagePullSecrets:
{{- toYaml . | nindent 6 }}
{{- end }}
containers:
- name: {{ .Chart.Name }}
image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default (printf "v%s" .Chart.AppVersion) }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
command:
{{- toYaml .Values.command | nindent 12 }}
args:
- --policy-config-file=/policy-dir/policy.yaml
- --descheduling-interval={{ required "deschedulingInterval required for running as Deployment" .Values.deschedulingInterval }}
{{- range $key, $value := .Values.cmdOptions }}
{{- if ne $value nil }}
- {{ printf "--%s=%s" $key (toString $value) }}
{{- else }}
- {{ printf "--%s" $key }}
{{- end }}
{{- end }}
{{- include "descheduler.leaderElection" . | nindent 12 }}
ports:
{{- toYaml .Values.ports | nindent 12 }}
livenessProbe:
{{- toYaml .Values.livenessProbe | nindent 12 }}
resources:
{{- toYaml .Values.resources | nindent 12 }}
{{- if .Values.securityContext }}
securityContext:
{{- toYaml .Values.securityContext | nindent 12 }}
{{- end }}
volumeMounts:
- mountPath: /policy-dir
name: policy-volume
{{- if .Values.podSecurityContext }}
securityContext:
{{- toYaml .Values.podSecurityContext | nindent 8 }}
{{- end }}
volumes:
- name: policy-volume
configMap:
name: {{ template "descheduler.fullname" . }}
{{- with .Values.nodeSelector }}
nodeSelector:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.affinity }}
affinity:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.topologySpreadConstraints }}
topologySpreadConstraints:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.tolerations }}
tolerations:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- end }}

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{{- if eq .Values.kind "Deployment" }}
{{- if eq .Values.service.enabled true }}
apiVersion: v1
kind: Service
metadata:
labels:
{{- include "descheduler.labels" . | nindent 4 }}
name: {{ template "descheduler.fullname" . }}
namespace: {{ include "descheduler.namespace" . }}
spec:
clusterIP: None
{{- if .Values.service.ipFamilyPolicy }}
ipFamilyPolicy: {{ .Values.service.ipFamilyPolicy }}
{{- end }}
{{- if .Values.service.ipFamilies }}
ipFamilies: {{ toYaml .Values.service.ipFamilies | nindent 4 }}
{{- end }}
ports:
- name: http-metrics
port: 10258
protocol: TCP
targetPort: 10258
selector:
{{- include "descheduler.selectorLabels" . | nindent 4 }}
type: ClusterIP
{{- end }}
{{- end }}

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{{- if .Values.serviceAccount.create -}}
apiVersion: v1
kind: ServiceAccount
metadata:
name: {{ template "descheduler.serviceAccountName" . }}
namespace: {{ include "descheduler.namespace" . }}
labels:
{{- include "descheduler.labels" . | nindent 4 }}
{{- if .Values.serviceAccount.annotations }}
annotations: {{ toYaml .Values.serviceAccount.annotations | nindent 4 }}
{{- end }}
{{- end -}}

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{{- if eq .Values.kind "Deployment" }}
{{- if eq .Values.serviceMonitor.enabled true }}
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
name: {{ template "descheduler.fullname" . }}-servicemonitor
namespace: {{ .Values.serviceMonitor.namespace | default .Release.Namespace }}
labels:
{{- include "descheduler.labels" . | nindent 4 }}
{{- if .Values.serviceMonitor.additionalLabels }}
{{- toYaml .Values.serviceMonitor.additionalLabels | nindent 4 }}
{{- end }}
spec:
jobLabel: jobLabel
namespaceSelector:
matchNames:
- {{ include "descheduler.namespace" . }}
selector:
matchLabels:
{{- include "descheduler.selectorLabels" . | nindent 6 }}
endpoints:
- honorLabels: {{ .Values.serviceMonitor.honorLabels | default true }}
port: http-metrics
{{- if .Values.serviceMonitor.interval }}
interval: {{ .Values.serviceMonitor.interval }}
{{- end }}
scheme: https
tlsConfig:
{{- if eq .Values.serviceMonitor.insecureSkipVerify true }}
insecureSkipVerify: true
{{- end }}
{{- if .Values.serviceMonitor.serverName }}
serverName: {{ .Values.serviceMonitor.serverName }}
{{- end}}
{{- if .Values.serviceMonitor.metricRelabelings }}
metricRelabelings:
{{ tpl (toYaml .Values.serviceMonitor.metricRelabelings | indent 4) . }}
{{- end }}
{{- if .Values.serviceMonitor.relabelings }}
relabelings:
{{ tpl (toYaml .Values.serviceMonitor.relabelings | indent 4) . }}
{{- end }}
{{- end }}
{{- end }}