feat: first version of chekr chart

Signed-off-by: Christian Kotzbauer <christian.kotzbauer@gmail.com>

charts/chekr/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/chekr/Chart.yaml

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+apiVersion: v2
+name: chekr
+description: A inspection utility for the maintenance of Kubernetes clusters.
+type: application
+version: 0.5.0
+appVersion: 0.5.0

charts/chekr/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "chekr.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 "chekr.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 }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "chekr.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "chekr.labels" -}}
+helm.sh/chart: {{ include "chekr.chart" . }}
+{{ include "chekr.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "chekr.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "chekr.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "chekr.serviceAccountName" -}}
+{{- if .Values.job.serviceAccount.create }}
+{{- default (include "chekr.fullname" .) .Values.job.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.job.serviceAccount.name }}
+{{- end }}
+{{- end }}

charts/chekr/templates/clusterrole.yaml

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+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: {{ include "chekr.fullname" . }}
+  labels:
+    {{- include "chekr.labels" . | nindent 4 }}
+rules:
+  - apiGroups:
+      - "*"
+    resources:
+      - "*"
+    verbs:
+      - "list"
+  - apiGroups:
+      - ""
+    resources:
+      - "pods"
+      - "persistentvolumeclaims"
+    verbs:
+      - "get"
+  - apiGroups:
+      - ""
+    resources:
+      - "pods/portforward"
+    verbs:
+      - "*"
+  - apiGroups:
+      - "apps"
+    resources:
+      - "replicasets"
+      - "deployments"
+      - "daemonsets"
+      - "statefulsets"
+    verbs:
+      - "get"
+  - apiGroups:
+      - "kyverno.io"
+    resources:
+      - "clusterpolicies"
+    verbs:
+      - "get"
+      - "create"
+      - "update"
+      - "patch"
+      - "delete"

charts/chekr/templates/clusterrolebinding.yaml

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+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: {{ include "chekr.fullname" . }}
+  labels:
+    {{- include "chekr.labels" . | nindent 4 }}
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: {{ include "chekr.fullname" . }}
+subjects:
+- kind: ServiceAccount
+  name: {{ include "chekr.serviceAccountName" . }}
+  namespace: {{ .Release.Namespace }}

charts/chekr/templates/configmap.yaml

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+{{- if .Values.job.config }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "chekr.fullname" . }}
+  labels:
+    {{- include "chekr.labels" . | nindent 4 }}
+data:
+  chekr.yaml: |
+{{ toYaml .Values.job.config | indent 4 }}
+{{- end }}

charts/chekr/templates/cronjob.yaml

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+{{- if semverCompare ">=1.21-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: batch/v1
+{{- else -}}
+apiVersion: batch/v1beta1
+{{- end }}
+kind: CronJob
+metadata:
+  name: {{ include "chekr.fullname" . }}
+  labels:
+    {{- include "chekr.labels" . | nindent 4 }}
+spec:
+  schedule: {{ .Values.job.schedule | quote }}
+  jobTemplate:
+    spec:
+      template:
+        metadata:
+          {{- with .Values.podAnnotations }}
+          annotations:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+          labels:
+            {{- include "chekr.selectorLabels" . | nindent 12 }}
+        spec:
+          {{- with .Values.imagePullSecrets }}
+          imagePullSecrets:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+          securityContext:
+            {{- toYaml .Values.podSecurityContext | nindent 12 }}
+          containers:
+          - name: {{ .Chart.Name }}
+            securityContext:
+              {{- toYaml .Values.securityContext | nindent 14 }}
+            image: "{{ .Values.job.image.repository }}:{{ .Values.job.image.tag | default .Chart.AppVersion }}"
+            imagePullPolicy: {{ .Values.job.image.pullPolicy }}
+            command:
+              - /bin/sh
+            args:
+              - -c
+              - |
+                {{- range .Values.job.commands }}
+                chekr {{ .command }} --output-file /results/{{ .outputFile }}
+                {{- end }}
+            {{- with .Values.job.env }}
+            env:
+              {{- toYaml . | nindent 14 }}
+            {{- end }}
+            resources:
+              {{- toYaml .Values.job.resources | nindent 14 }}
+            volumeMounts:
+              - name: results
+                mountPath: /results
+            {{- if .Values.job.config }}
+              - name: config
+                mountPath: /.config/chekr
+            {{- end }}
+          volumes:
+            - name: results
+              persistentVolumeClaim:
+                claimName: {{ include "chekr.fullname" . }}
+          {{- if .Values.job.config }}
+            - name: config
+              configMap:
+                name: {{ include "chekr.fullname" . }}
+          {{- end }}
+          serviceAccountName: {{ include "chekr.serviceAccountName" . }}
+          {{- with .Values.job.nodeSelector }}
+          nodeSelector:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+          {{- with .Values.job.affinity }}
+          affinity:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+          {{- with .Values.job.tolerations }}
+          tolerations:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+          restartPolicy: OnFailure

charts/chekr/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "chekr.fullname" . }}
+  labels:
+    {{- include "chekr.labels" . | nindent 4 }}
+spec:
+  selector:
+    matchLabels:
+      {{- include "chekr.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "chekr.selectorLabels" . | nindent 8 }}
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.webserver.image.repository }}:{{ .Values.webserver.image.tag }}"
+          imagePullPolicy: {{ .Values.webserver.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 8080
+              protocol: TCP
+          #livenessProbe:
+          #  httpGet:
+          #    path: /
+          #    port: http
+          #readinessProbe:
+          #  httpGet:
+          #    path: /
+          #    port: http
+          resources:
+            {{- toYaml .Values.webserver.resources | nindent 12 }}
+          volumeMounts:
+            - name: results
+              mountPath: /usr/share/nginx/html
+      volumes:
+        - name: results
+          persistentVolumeClaim:
+            claimName: {{ include "chekr.fullname" . }}
+      {{- with .Values.webserver.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.webserver.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.webserver.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

charts/chekr/templates/ingress.yaml

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+{{- if .Values.webserver.ingress.enabled -}}
+{{- $fullName := include "chekr.fullname" . -}}
+{{- $svcPort := .Values.webserver.service.port -}}
+{{- if and .Values.webserver.ingress.className (not (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion)) }}
+  {{- if not (hasKey .Values.webserver.ingress.annotations "kubernetes.io/ingress.class") }}
+  {{- $_ := set .Values.webserver.ingress.annotations "kubernetes.io/ingress.class" .Values.webserver.ingress.className}}
+  {{- end }}
+{{- end }}
+{{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1
+{{- else if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1beta1
+{{- else -}}
+apiVersion: extensions/v1beta1
+{{- end }}
+kind: Ingress
+metadata:
+  name: {{ $fullName }}
+  labels:
+    {{- include "chekr.labels" . | nindent 4 }}
+  {{- with .Values.webserver.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if and .Values.webserver.ingress.className (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion) }}
+  ingressClassName: {{ .Values.webserver.ingress.className }}
+  {{- end }}
+  {{- if .Values.webserver.ingress.tls }}
+  tls:
+    {{- range .Values.webserver.ingress.tls }}
+    - hosts:
+        {{- range .hosts }}
+        - {{ . | quote }}
+        {{- end }}
+      secretName: {{ .secretName }}
+    {{- end }}
+  {{- end }}
+  rules:
+    {{- range .Values.webserver.ingress.hosts }}
+    - host: {{ .host | quote }}
+      http:
+        paths:
+          {{- range .paths }}
+          - path: {{ .path }}
+            {{- if and .pathType (semverCompare ">=1.18-0" $.Capabilities.KubeVersion.GitVersion) }}
+            pathType: {{ .pathType }}
+            {{- end }}
+            backend:
+              {{- if semverCompare ">=1.19-0" $.Capabilities.KubeVersion.GitVersion }}
+              service:
+                name: {{ $fullName }}
+                port:
+                  number: {{ $svcPort }}
+              {{- else }}
+              serviceName: {{ $fullName }}
+              servicePort: {{ $svcPort }}
+              {{- end }}
+          {{- end }}
+    {{- end }}
+{{- end }}

charts/chekr/templates/persistentvolumeclaim.yaml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ include "chekr.fullname" . }}
+  labels:
+    {{- include "chekr.labels" . | nindent 4 }}
+spec:
+  accessModes:
+    - ReadWriteMany
+  volumeMode: Filesystem
+  resources:
+    requests:
+      storage: {{ .Values.persistence.size }}
+  storageClassName: {{ .Values.persistence.storageClass | quote }}

charts/chekr/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "chekr.fullname" . }}
+  labels:
+    {{- include "chekr.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.webserver.service.type }}
+  ports:
+    - port: {{ .Values.webserver.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "chekr.selectorLabels" . | nindent 4 }}

charts/chekr/templates/serviceaccount.yaml

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+{{- if .Values.job.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "chekr.serviceAccountName" . }}
+  labels:
+    {{- include "chekr.labels" . | nindent 4 }}
+  {{- with .Values.job.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+{{- end }}

charts/chekr/values.yaml

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+# Default values for chekr.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+podAnnotations: {}
+
+podSecurityContext:
+  fsGroup: 101
+
+securityContext:
+  capabilities:
+    drop:
+    - ALL
+  readOnlyRootFilesystem: false
+  runAsNonRoot: true
+  runAsUser: 101
+
+# Storage to store and serve report files (mandatory).
+persistence:
+  storageClass: "-" # Storage-Class to use. RWX capability is required.
+  size: 256Mi
+
+webserver:
+  image:
+    repository: nginxinc/nginx-unprivileged
+    pullPolicy: IfNotPresent
+    tag: mainline-alpine
+
+  service:
+    type: ClusterIP
+    port: 8080
+
+  ingress:
+    enabled: false
+    className: ""
+    annotations: {}
+      # kubernetes.io/ingress.class: nginx
+      # kubernetes.io/tls-acme: "true"
+    hosts:
+      - host: chart-example.local
+        paths:
+          - path: /
+            pathType: ImplementationSpecific
+    tls: []
+    #  - secretName: chart-example-tls
+    #    hosts:
+    #      - chart-example.local
+
+  resources: {}
+    # We usually recommend not to specify default resources and to leave this as a conscious
+    # choice for the user. This also increases chances charts run on environments with little
+    # resources, such as Minikube. If you do want to specify resources, uncomment the following
+    # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+    # limits:
+    #   cpu: 100m
+    #   memory: 128Mi
+    # requests:
+    #   cpu: 100m
+    #   memory: 128Mi
+
+  nodeSelector: {}
+
+  tolerations: []
+
+  affinity: {}
+
+
+job:
+  image:
+    repository: ghcr.io/ckotzbauer/chekr
+    pullPolicy: IfNotPresent
+    # Overrides the image tag whose default is the chart appVersion.
+    tag: ""
+
+  schedule: "0 22 * * *"
+  commands: []
+    # - command: "deprecation list -o html"
+    #   outputFile: "deprecation.html"
+    # - command: "resources -n shop-app --limits-threshold 20 -o json"
+    #   outputFile: "shop-app-resources.json"
+
+  config:
+    # prometheus-url: monitoring/k8s-prometheus:9090
+    # prometheus-user: prometheus
+
+  env: []
+    # - name: CHEKR_SELECTOR
+    #   value: "app.kubernetes.io/name=myapp"
+
+  resources: {}
+    # We usually recommend not to specify default resources and to leave this as a conscious
+    # choice for the user. This also increases chances charts run on environments with little
+    # resources, such as Minikube. If you do want to specify resources, uncomment the following
+    # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+    # limits:
+    #   cpu: 100m
+    #   memory: 128Mi
+    # requests:
+    #   cpu: 100m
+    #   memory: 128Mi
+
+  nodeSelector: {}
+
+  tolerations: []
+
+  affinity: {}
+
+  serviceAccount:
+    # Specifies whether a service account should be created
+    create: true
+    # Annotations to add to the service account
+    annotations: {}
+    # The name of the service account to use.
+    # If not set and create is true, a name is generated using the fullname template
+    name: ""