add cadvisor helm chart (#1)

charts/cadvisor/.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
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/cadvisor/Chart.yaml

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+apiVersion: v1
+description: A chart for a Cadvisor deployment
+name: cadvisor
+version: 1.0.0
+appVersion: 0.35.0
+home: https://github.com/google/cadvisor
+sources:
+  - https://github.com/google/cadvisor
+  - https://github.com/code-chris/helm-charts
+keywords:
+  - prometheus
+  - cadvisor
+  - monitoring
+maintainers:
+  - name: code-chris
+    email: christian.kotzbauer@gmail.com

charts/cadvisor/README.md

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+# Cadvisor
+
+A chart for a Cadvisor deployment
+
+Learn more: [https://github.com/google/cadvisor](https://github.com/google/cadvisor)
+
+## TL;DR;
+
+```bash
+$ helm install code-chris/cadvisor
+```
+
+## Introduction
+
+This chart creates a daemonset on a [Kubernetes](http://kubernetes.io) cluster using the [Helm](https://helm.sh) package manager.
+
+## Prerequisites
+
+- Kubernetes 1.10+
+
+## Installing the Chart
+
+To install the chart with the release name `my-release`:
+
+```bash
+$ helm install --name my-release code-chris/cadvisor
+```
+
+The command deploys the Cadvisor on the Kubernetes cluster using the default configuration. The [configuration](#configuration) section lists the parameters that can be configured during installation.
+
+## Uninstalling the Chart
+
+To uninstall/delete the `my-release` deployment:
+
+```bash
+$ helm delete my-release
+```
+The command removes all the Kubernetes components associated with the chart and deletes the release.
+
+## Configuration
+
+The following table lists the configurable parameters of the Prometheus MSTeams chart and their default values.
+
+|               Parameter                |                    Description                    |            Default            |
+| -------------------------------------- | ------------------------------------------------- | ----------------------------- |
+| `image.repository`                     | container image repository                        | `k8s.gcr.io/cadvisor`         |
+| `image.tag`                            | container image tag                               | `v0.35.0`                     |
+| `image.pullPolicy`                     | container image pull policy                       | `IfNotPresent`                |
+| `nodeSelector`                         | node labels for pod assignment                    | `{}`                          |
+| `tolerations`                          | node tolerations for pod assignment               | `[]`                          |
+| `affinity`                             | node affinity for pod assignment                  | `{}`                          |
+| `container.port`                       | the container and service port to use             | 8080                          |
+| `container.additionalArgs`             | additional container arguments                    | see values.yaml               |
+| `container.hostPaths`                  | hostPaths to mount in the container               | see values.yaml               |
+| `resources`                            | pod resource requests & limits                    | `{}`                          |
+| `serviceAccount.create`                | create a own serviceAccount for the pod           | `true`                        |
+| `serviceAccount.name`                  | name of the serviceAccount to create              | `""`                          |
+| `podSecurityPolicy.create`             | create a own PodSecurityPolicy for the pod        | `false`                       |
+
+Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
+
+```bash
+$ helm install --name my-release \
+    --set key_1=value_1,key_2=value_2 \
+    code-chris/cadvisor
+```
+
+Alternatively, a YAML file that specifies the values for the parameters can be provided while installing the chart. For example,
+
+```bash
+# example for staging
+$ helm install --name my-release -f values.yaml code-chris/cadvisor
+```
+
+> **Tip**: You can use the default [values.yaml](values.yaml)

charts/cadvisor/templates/_helpers.tpl

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

charts/cadvisor/templates/clusterrole.yaml

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+{{- if .Values.podSecurityPolicy.create -}}
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: {{ template "cadvisor.name" . }}
+rules:
+  - apiGroups: ['policy']
+    resources: ['podsecuritypolicies']
+    verbs:     ['use']
+    resourceNames:
+    - {{ template "cadvisor.name" . }}
+{{- end -}}

charts/cadvisor/templates/clusterrolebinding.yaml

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+{{- if .Values.podSecurityPolicy.create -}}
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: {{ template "cadvisor.name" . }}
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: {{ template "cadvisor.name" . }}
+subjects:
+- kind: ServiceAccount
+  name: {{ template "cadvisor.serviceAccountName" . }}
+  namespace: {{ .Release.Namespace }}
+{{- end -}}

charts/cadvisor/templates/daemonset.yaml

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+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: {{ template "cadvisor.name" . }}
+  annotations:
+      seccomp.security.alpha.kubernetes.io/pod: 'docker/default'
+  labels:
+    app: {{ template "cadvisor.name" . }}
+    chart: {{ template "cadvisor.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  selector:
+    matchLabels:
+      app: {{ template "cadvisor.name" . }}
+      release: {{ .Release.Name }}
+  template:
+    metadata:
+      labels:
+        app: {{ template "cadvisor.name" . }}
+        release: {{ .Release.Name }}
+    spec:
+      serviceAccountName: {{ template "cadvisor.serviceAccountName" . }}
+      containers:
+      - name: {{ template "cadvisor.name" . }}
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+        imagePullPolicy: {{ .Values.image.pullPolicy }}
+        args:
+        {{- with .Values.container.additionalArgs }}
+{{ toYaml . | indent 10 }}
+        {{- end }}
+        volumeMounts:
+        {{- range .Values.container.hostPaths }}
+        - name: {{ .name }}
+          mountPath: {{ default .path .mount }}
+          readOnly: true
+        {{- end }}
+        ports:
+        - name: http
+          containerPort: {{ .Values.container.port }}
+          protocol: TCP
+        resources:
+{{ toYaml .Values.resources | indent 10 }}
+      automountServiceAccountToken: false
+      terminationGracePeriodSeconds: 30
+      volumes:
+      {{- range .Values.container.hostPaths }}
+      - name: {{ .name }}
+        hostPath:
+          path: {{ .path }}
+      {{- end }}
+    {{- with .Values.nodeSelector }}
+      nodeSelector:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+    {{- with .Values.affinity }}
+      affinity:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+    {{- with .Values.tolerations }}
+      tolerations:
+{{ toYaml . | indent 8 }}
+    {{- end }}
+

charts/cadvisor/templates/psp.yaml

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+{{- if .Values.podSecurityPolicy.create -}}
+apiVersion: policy/v1beta1
+kind: PodSecurityPolicy
+metadata:
+  name: {{ template "cadvisor.name" . }}
+spec:
+  seLinux:
+    rule: RunAsAny
+  supplementalGroups:
+    rule: RunAsAny
+  runAsUser:
+    rule: RunAsAny
+  fsGroup:
+    rule: RunAsAny
+  volumes:
+  - '*'
+  allowedHostPaths:
+  {{- range .Values.container.hostPaths }}
+  - pathPrefix: {{ .path }}
+  {{- end }}
+{{- end -}}

charts/cadvisor/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "cadvisor.name" . }}
+  labels:
+    app: {{ template "cadvisor.name" . }}
+    chart: {{ template "cadvisor.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+spec:
+  ports:
+  - name: http
+    port: {{ .Values.container.port }}
+    targetPort: {{ .Values.container.port }}
+    protocol: TCP
+  selector:
+    app: {{ template "cadvisor.name" . }}
+  type: ClusterIP

charts/cadvisor/templates/serviceaccount.yaml

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+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ template "cadvisor.serviceAccountName" . }}
+  namespace: {{ .Release.Namespace }}
+{{- end -}}

charts/cadvisor/values.yaml

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+image:
+  repository: k8s.gcr.io/cadvisor
+  tag: v0.35.0
+  pullPolicy: IfNotPresent
+
+container:
+  port: 8080
+  additionalArgs:
+    - --housekeeping_interval=10s                       # kubernetes default args
+    - --max_housekeeping_interval=15s
+    - --event_storage_event_limit=default=0
+    - --event_storage_age_limit=default=0
+    - --disable_metrics=percpu,process,sched,tcp,udp    # enable only diskIO, cpu, memory, network, disk
+    - --docker_only
+  hostPaths:
+    - name: rootfs
+      path: "/"
+      mount: "/rootfs"
+    - name: varrun
+      path: "/var/run"
+    - name: sys
+      path: "/sys"
+    - name: docker
+      path: "/var/lib/docker"
+    - name: disk
+      path: "/dev/disk"
+
+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
+
+serviceAccount:
+  # Specifies whether a service account should be created
+  create: true
+  # The name of the service account to use.
+  # If not set and create is true, a name is generated using the fullname template
+  name:
+
+podSecurityPolicy:
+  create: false
+
+nodeSelector: {}
+
+tolerations: []
+
+affinity: {}