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Based on django helm chart now

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David Burke 2021-06-02 19:43:08 -04:00
parent 749167ccce
commit 0372b5269b
26 changed files with 42 additions and 636 deletions
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1
templates Symbolic link
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django-helm-chart/templates/

21
templates/NOTES.txt
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1. Get the application URL by running these commands:
{{- if .Values.web.ingress.enabled }}
{{- range $host := .Values.web.ingress.hosts }}
{{- range .paths }}
http{{ if $.Values.web.ingress.tls }}s{{ end }}://{{ $host.host }}{{ .path }}
{{- end }}
{{- end }}
{{- else if contains "NodePort" .Values.web.service.type }}
export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "django.fullname" . }})
export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
echo http://$NODE_IP:$NODE_PORT
{{- else if contains "LoadBalancer" .Values.web.service.type }}
NOTE: It may take a few minutes for the LoadBalancer IP to be available.
You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "django.fullname" . }}'
export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "django.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
echo http://$SERVICE_IP:{{ .Values.web.service.port }}
{{- else if contains "ClusterIP" .Values.web.service.type }}
export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "django.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
echo "Visit http://127.0.0.1:8080 to use your application"
kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:80
{{- end }}

123
templates/_helpers.tpl
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{{/* vim: set filetype=mustache: */}}
{{/*
Expand the name of the chart.
*/}}
{{- define "django.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 "django.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 "django.chart" -}}
{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{/*
Common labels
*/}}
{{- define "django.labels" -}}
helm.sh/chart: {{ include "django.chart" . }}
{{ include "django.selectorLabels" . }}
{{- if .Chart.AppVersion }}
app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
{{- end }}
app.kubernetes.io/managed-by: {{ .Release.Service }}
{{- end -}}
{{/*
Selector labels
*/}}
{{- define "django.selectorLabels" -}}
app.kubernetes.io/name: {{ include "django.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
{{- end -}}
{{/*
Create the name of the service account to use
*/}}
{{- define "django.serviceAccountName" -}}
{{- if .Values.serviceAccount.create -}}
{{ default (include "django.fullname" .) .Values.serviceAccount.name }}
{{- else -}}
{{ default "default" .Values.serviceAccount.name }}
{{- end -}}
{{- 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).
*/}}
{{- define "django.postgresql.fullname" -}}
{{- if .Values.postgresql.fullnameOverride -}}
{{- .Values.postgresql.fullnameOverride | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- $name := default .Chart.Name .Values.postgresql.nameOverride -}}
{{- if contains $name .Release.Name -}}
{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- printf "%s-%s" .Release.Name "django-postgresql" | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{- end -}}
{{- end -}}
{{- define "django.redis.fullname" -}}
{{- if .Values.redis.fullnameOverride -}}
{{- .Values.redis.fullnameOverride | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- $name := default .Chart.Name .Values.redis.nameOverride -}}
{{- if contains $name .Release.Name -}}
{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
{{- else -}}
{{- printf "%s-%s" .Release.Name "django-redis" | trunc 63 | trimSuffix "-" -}}
{{- end -}}
{{- end -}}
{{- end -}}
{{/*
Set redis host
*/}}
{{- define "django.redis.host" -}}
{{- if .Values.redis.enabled -}}
{{- template "django.redis.fullname" . -}}-redis-master
{{- else -}}
{{- .Values.redis.host | quote -}}
{{- end -}}
{{- end -}}
{{/*
Set redis url
*/}}
{{- define "django.redis.url" -}}
{{- if .Values.redis.enabled -}}
redis://{{- template "django.redis.password" -}}{{- template "django.redis.fullname" . -}}-master
{{- end -}}
{{- end -}}
{{/*
Set redis port
*/}}
{{- define "django.redis.port" -}}
{{- if .Values.redis.enabled -}}
"6379"
{{- else -}}
{{- default "6379" .Values.redis.port | quote -}}
{{- end -}}
{{- end -}}

65
templates/beat/deployment.yaml
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apiVersion: apps/v1
kind: Deployment
metadata:
name: {{ include "django.fullname" . }}-beat
labels:
{{- include "django.labels" . | nindent 4 }}
app.kubernetes.io/component: beat
spec:
replicas: 1
selector:
matchLabels:
{{- include "django.selectorLabels" . | nindent 6 }}
app.kubernetes.io/component: beat
template:
metadata:
annotations:
checksum/secret: {{ include (print $.Template.BasePath "/secrets.yaml") . | sha256sum }}
checksum/configmap: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
tag: "{{ .Values.image.tag }}"
labels:
{{- include "django.selectorLabels" . | nindent 8 }}
app.kubernetes.io/component: beat
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.image.repository }}:{{ .Values.image.tag }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
resources:
limits:
cpu: 50m
memory: 96Mi
requests:
cpu: 1m
memory: 32Mi
env:
- name: SERVER_ROLE
value: "beat"
{{- if .Values.redisURL }}
- name: REDIS_URL
value: {{ .Values.redisURL }}
{{- end }}
{{- if .Values.redis.enabled }}
- name: REDIS_PASSWORD
valueFrom:
secretKeyRef:
key: redis-password
name: {{ include "django.fullname" . }}-redis
- name: REDIS_HOST
value: {{ template "django.redis.host" . }}
- name: REDIS_PORT
value: {{ template "django.redis.port" . }}
{{- end }}
envFrom:
- secretRef:
name: {{ include "django.fullname" . }}
- configMapRef:
name: {{ include "django.fullname" . }}

12
templates/configmap.yaml
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apiVersion: v1
kind: ConfigMap
metadata:
name: {{ include "django.fullname" . }}
labels:
{{- include "django.labels" . | nindent 4 }}
annotations:
"helm.sh/hook-weight": "-1"
data:
{{- range $k, $v := .Values.environmentVariables }}
{{ $k }}: {{ $v | quote }}
{{- end }}

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templates/pre-install-job.yaml
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apiVersion: batch/v1
kind: Job
metadata:
name: {{ include "django.fullname" . }}
labels:
{{- include "django.labels" . | nindent 4 }}
annotations:
"helm.sh/hook": post-install,pre-upgrade
"helm.sh/hook-delete-policy": before-hook-creation,hook-succeeded
"helm.sh/hook-weight": "0"
checksum/secret: {{ include (print $.Template.BasePath "/secrets.yaml") . | sha256sum }}
checksum/configmap: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
tag: "{{ .Values.image.tag }}"
spec:
activeDeadlineSeconds: 600
template:
spec:
restartPolicy: Never
containers:
- name: pre-install-job
image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
command: ["./manage.py","migrate"]
env:
- name: DEBUG
value: "False"
- name: STATIC_URL
value: /
- name: DATABASE_URL
value: {{ required "databaseURL is a required value." .Values.databaseURL }}
- name: SECRET_KEY
value: {{ required "secretKey is a required value." .Values.secretKey }}

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templates/secrets.yaml
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apiVersion: v1
kind: Secret
metadata:
name: {{ include "django.fullname" . }}
labels:
{{- include "django.labels" . | nindent 4 }}
type: Opaque
data:
DATABASE_URL: {{ required "databaseURL is a required value." .Values.databaseURL | b64enc | quote }}
SECRET_KEY: {{ required "secretKey is a required value." .Values.secretKey | b64enc | quote }}
REDIS_URL: {{ printf "redis://:@glitchtip-staging-redis-master:6379/0" | b64enc | quote }}
{{- if .Values.stripeLiveSecretKey }}
STRIPE_LIVE_SECRET_KEY: {{ .Values.stripeLiveSecretKey | b64enc | quote }}
{{- end }}
{{- if .Values.djstripeWebhookSecret }}
DJSTRIPE_WEBHOOK_SECRET: {{ .Values.djstripeWebhookSecret | b64enc | quote }}
{{- end }}

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templates/serviceaccount.yaml
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{{- if .Values.serviceAccount.create -}}
apiVersion: v1
kind: ServiceAccount
metadata:
name: {{ include "django.serviceAccountName" . }}
labels:
{{- include "django.labels" . | nindent 4 }}
{{- with .Values.serviceAccount.annotations }}
annotations:
{{- toYaml . | nindent 4 }}
{{- end }}
{{- end }}

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templates/tests/test-connection.yaml
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apiVersion: v1
kind: Pod
metadata:
name: "{{ include "django.fullname" . }}-test-connection"
labels:
{{ include "django.labels" . | nindent 4 }}
annotations:
"helm.sh/hook": test
spec:
containers:
- name: wget
image: busybox
command: ['wget']
args: ['{{ include "django.fullname" . }}:{{ .Values.web.service.port }}']
restartPolicy: Never

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templates/web/deployment.yaml
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apiVersion: apps/v1
kind: Deployment
metadata:
name: {{ include "django.fullname" . }}-web
labels:
{{- include "django.labels" . | nindent 4 }}
app.kubernetes.io/component: web
spec:
{{- if not .Values.web.autoscaling.enabled }}
replicas: {{ .Values.web.replicaCount }}
{{- end }}
selector:
matchLabels:
{{- include "django.selectorLabels" . | nindent 6 }}
app.kubernetes.io/component: web
template:
metadata:
annotations:
checksum/secret: {{ include (print $.Template.BasePath "/secrets.yaml") . | sha256sum }}
checksum/configmap: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
tag: "{{ .Values.image.tag }}"
labels:
{{- include "django.selectorLabels" . | nindent 8 }}
app.kubernetes.io/component: web
spec:
{{- with .Values.imagePullSecrets }}
imagePullSecrets:
{{- toYaml . | nindent 8 }}
{{- end }}
serviceAccountName: {{ include "django.serviceAccountName" . }}
securityContext:
{{- toYaml .Values.podSecurityContext | nindent 8 }}
containers:
- name: {{ .Chart.Name }}
securityContext:
{{- toYaml .Values.securityContext | nindent 12 }}
image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
ports:
- name: http
containerPort: 8080
protocol: TCP
livenessProbe:
failureThreshold: {{ .Values.web.livenessProbe.failureThreshold }}
httpGet:
path: /_health/
port: 8080
initialDelaySeconds: {{ .Values.web.livenessProbe.initialDelaySeconds }}
timeoutSeconds: {{ .Values.web.livenessProbe.timeoutSeconds }}
readinessProbe:
failureThreshold: {{ .Values.web.readinessProbe.failureThreshold }}
httpGet:
path: /_health/
port: 8080
initialDelaySeconds: {{ .Values.web.readinessProbe.initialDelaySeconds }}
timeoutSeconds: {{ .Values.web.readinessProbe.timeoutSeconds }}
resources:
{{- toYaml .Values.web.resources | nindent 12 }}
env:
{{- if .Values.redisURL }}
- name: REDIS_URL
value: {{ .Values.redisURL }}
{{- end }}
{{- if .Values.redis.enabled }}
- name: REDIS_PASSWORD
valueFrom:
secretKeyRef:
key: redis-password
name: {{ include "django.fullname" . }}-redis
- name: REDIS_HOST
value: {{ template "django.redis.host" . }}
- name: REDIS_PORT
value: {{ template "django.redis.port" . }}
{{- end }}
- name: POD_IP
valueFrom:
fieldRef:
fieldPath: status.podIP
envFrom:
- secretRef:
name: {{ include "django.fullname" . }}
- configMapRef:
name: {{ include "django.fullname" . }}
{{- with .Values.web.nodeSelector }}
nodeSelector:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.web.affinity }}
affinity:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.web.tolerations }}
tolerations:
{{- toYaml . | nindent 8 }}
{{- end }}

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templates/web/hpa.yaml
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{{- if .Values.web.autoscaling.enabled -}}
apiVersion: autoscaling/v2beta1
kind: HorizontalPodAutoscaler
metadata:
name: {{ template "django.fullname" . }}-web
labels:
{{- include "django.labels" . | nindent 4 }}
spec:
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: {{ template "django.fullname" . }}-web
minReplicas: {{ .Values.web.autoscaling.minReplicas }}
maxReplicas: {{ .Values.web.autoscaling.maxReplicas }}
metrics:
{{- if .Values.web.autoscaling.targetCPUUtilizationPercentage }}
- type: Resource
resource:
name: cpu
targetAverageUtilization: {{ .Values.web.autoscaling.targetCPUUtilizationPercentage }}
{{- end }}
{{- if .Values.web.autoscaling.targetMemoryUtilizationPercentage }}
- type: Resource
resource:
name: memory
targetAverageUtilization: {{ .Values.web.autoscaling.targetMemoryUtilizationPercentage }}
{{- end }}
{{- end }}

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templates/web/ingress.yaml
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{{- if .Values.web.ingress.enabled -}}
{{- $fullName := include "django.fullname" . -}}
{{- $svcPort := .Values.web.service.port -}}
{{- 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 "django.labels" . | nindent 4 }}
{{- with .Values.web.ingress.annotations }}
annotations:
{{- toYaml . | nindent 4 }}
{{- end }}
spec:
{{- if .Values.web.ingress.tls }}
tls:
{{- range .Values.web.ingress.tls }}
- hosts:
{{- range .hosts }}
- {{ . | quote }}
{{- end }}
secretName: {{ .secretName }}
{{- end }}
{{- end }}
rules:
{{- range .Values.web.ingress.hosts }}
- host: {{ .host | quote }}
http:
paths:
{{- range .paths }}
- path: {{ .path }}
backend:
serviceName: {{ $fullName }}-web
servicePort: {{ $svcPort }}
{{- end }}
{{- end }}
{{- end }}

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templates/web/pdb.yaml
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{{- if .Values.web.budget -}}
{{- if .Values.web.budget.minAvailable -}}
apiVersion: policy/v1beta1
kind: PodDisruptionBudget
metadata:
name: {{ include "django.fullname" . }}-web
labels:
{{- include "django.labels" . | nindent 4 }}
spec:
minAvailable: {{ .Values.web.budget.minAvailable }}
selector:
matchLabels:
{{- include "django.selectorLabels" . | nindent 6 }}
app.kubernetes.io/component: web
{{- end -}}
{{- end -}}

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templates/web/service.yaml
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apiVersion: v1
kind: Service
metadata:
name: {{ include "django.fullname" . }}-web
labels:
{{- include "django.labels" . | nindent 4 }}
spec:
type: {{ .Values.web.service.type }}
ports:
- port: {{ .Values.web.service.port }}
targetPort: http
protocol: TCP
name: http
selector:
{{- include "django.selectorLabels" . | nindent 4 }}
app.kubernetes.io/component: web

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templates/worker/deployment.yaml
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apiVersion: apps/v1
kind: Deployment
metadata:
name: {{ include "django.fullname" . }}-worker
labels:
{{- include "django.labels" . | nindent 4 }}
app.kubernetes.io/component: worker
spec:
replicas: {{ .Values.worker.replicaCount }}
selector:
matchLabels:
{{- include "django.selectorLabels" . | nindent 6 }}
app.kubernetes.io/component: worker
template:
metadata:
annotations:
checksum/secret: {{ include (print $.Template.BasePath "/secrets.yaml") . | sha256sum }}
checksum/configmap: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
tag: "{{ .Values.image.tag }}"
labels:
{{- include "django.selectorLabels" . | nindent 8 }}
app.kubernetes.io/component: worker
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.image.repository }}:{{ .Values.image.tag }}"
imagePullPolicy: {{ .Values.image.pullPolicy }}
resources:
{{- toYaml .Values.worker.resources | nindent 12 }}
env:
- name: SERVER_ROLE
value: "worker"
{{- if .Values.redisURL }}
- name: REDIS_URL
value: {{ .Values.redisURL }}
{{- end }}
{{- if .Values.redis.enabled }}
- name: REDIS_PASSWORD
valueFrom:
secretKeyRef:
key: redis-password
name: {{ include "django.fullname" . }}-redis
- name: REDIS_HOST
value: {{ template "django.redis.host" . }}
- name: REDIS_PORT
value: {{ template "django.redis.port" . }}
{{- end }}
envFrom:
- secretRef:
name: {{ include "django.fullname" . }}
- configMapRef:
name: {{ include "django.fullname" . }}
{{- with .Values.worker.nodeSelector }}
nodeSelector:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.worker.affinity }}
affinity:
{{- toYaml . | nindent 8 }}
{{- end }}
{{- with .Values.worker.tolerations }}
tolerations:
{{- toYaml . | nindent 8 }}
{{- end }}

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templates/worker/hpa.yaml
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{{- if .Values.worker.autoscaling.enabled -}}
apiVersion: autoscaling/v2beta1
kind: HorizontalPodAutoscaler
metadata:
name: {{ template "django.fullname" . }}-worker
labels:
{{- include "django.labels" . | nindent 4 }}
spec:
scaleTargetRef:
apiVersion: apps/v1
kind: Deployment
name: {{ template "django.fullname" . }}-worker
minReplicas: {{ .Values.worker.autoscaling.minReplicas }}
maxReplicas: {{ .Values.worker.autoscaling.maxReplicas }}
metrics:
{{- if .Values.worker.autoscaling.targetCPUUtilizationPercentage }}
- type: Resource
resource:
name: cpu
targetAverageUtilization: {{ .Values.worker.autoscaling.targetCPUUtilizationPercentage }}
{{- end }}
{{- if .Values.worker.autoscaling.targetMemoryUtilizationPercentage }}
- type: Resource
resource:
name: memory
targetAverageUtilization: {{ .Values.worker.autoscaling.targetMemoryUtilizationPercentage }}
{{- end }}
{{- end }}