cloud-configuration/helm/template/templates/_deployment.yaml

{{- define "template.deployment" -}}
apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ include "template.fullname" . }}
  labels:
    {{- include "template.labels" . | nindent 4 }}
  annotations:
    {{- include "template.annotations" . | nindent 4 }}
spec:
  revisionHistoryLimit: {{ .Values.revisionHistoryLimit }}
  {{- if not .Values.autoscaling.enabled }}
  replicas: {{ .Values.replicaCount }}
  {{- end }}
  selector:
    matchLabels:
      {{- include "template.selectorLabels" . | nindent 6 }}
  template:
    metadata:
      annotations:
        {{- if and $.Values.prometheus.enabled (not $.Values.prometheus.useCRDs) $.Values.application.isSpring }}
        prometheus.io/scrape: "true"
        prometheus.io/path: /actuator/prometheus
        prometheus.io/port: "{{ $.Values.application.actuatorPort }}"
        {{- end }}
        {{- with .Values.podAnnotations }}
        {{- toYaml . | nindent 8 }}
        {{- end }}
        {{- include "template.annotations" . | nindent 8 }}
      labels:
        {{- include "template.selectorLabels" . | nindent 8 }}
    spec:
      enableServiceLinks: {{ .Values.enableServiceLinks }}
      {{- with .Values.imagePullSecrets }}
      imagePullSecrets:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      serviceAccountName: {{ include "template.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 "latest" }}"
          imagePullPolicy: {{ .Values.image.pullPolicy }}
          {{- if or .Values.secrets .Values.vault.enabled }}
          envFrom:
            - secretRef:
                name: {{ include "template.fullname" . }}
          {{- end }}
          env:
          {{- if .Values.application.isSpring }}
            - name: SPRING_PROFILES_ACTIVE
              value: {{ .Values.application.profile }}
          {{- end}}
          {{- range .Values.environment }}
            - name: {{ .name }}
              value: {{ tpl (quote .value) $ }}
          {{- end }}
          {{- if or .Values.application.isSpring .Values.volumeMounts }}
          volumeMounts:
          {{- if .Values.application.isSpring }}
            - mountPath: /tmp
              name: tmp
          {{- end }}
          {{- if .Values.volumeMounts }}
            {{- toYaml .Values.volumeMounts | nindent 12 }}
          {{- end }}
          {{- end }}
          ports:
            - name: http
              containerPort: {{ .Values.application.port }}
              protocol: TCP
            {{- if .Values.application.isSpring }}
            - name: http-actuator
              containerPort: {{ .Values.application.actuatorPort }}
              protocol: TCP
            {{- end }}
          {{- if .Values.livenessProbe.enabled }}
          livenessProbe:
            httpGet:
              path: {{ .Values.livenessProbe.path }}
              port: {{ .Values.livenessProbe.port }}
            initialDelaySeconds: {{ .Values.livenessProbe.initialDelaySeconds }}
            periodSeconds: {{ .Values.livenessProbe.periodSeconds }}
          {{- end }}
          {{- if .Values.readinessProbe.enabled }}
          readinessProbe:
            httpGet:
              path: {{ .Values.readinessProbe.path }}
              port: {{ .Values.readinessProbe.port }}
            initialDelaySeconds: {{ .Values.readinessProbe.initialDelaySeconds }}
            periodSeconds: {{ .Values.readinessProbe.periodSeconds }}
            timeoutSeconds: {{ .Values.readinessProbe.timeoutSeconds }}
          {{- end }}
          resources:
            {{- toYaml .Values.resources | nindent 12 }}
          {{- with .Values.containerSpec }}
          {{- toYaml . | nindent 10 }}
          {{- end }}
          {{/*
            Due to the asynchronous way Kubernetes shuts down applications there is a period of
            time when requests can be sent to the application while an application is being terminated.
            To deal with this we can configure a pre-stop sleep to allow enough time for requests to
            stop being routed to the application before it is terminated.
          */}}
          lifecycle:
            preStop:
              exec:
                  command: [ "sh", "-c", "sleep 10" ]
      {{- with .Values.nodeSelector }}
      nodeSelector:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.affinity }}
      affinity:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.tolerations }}
      tolerations:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- if or .Values.application.isSpring .Values.volumes }}
      volumes:
      {{- if .Values.application.isSpring }}
        - name: tmp
          emptyDir:
            medium: Memory
      {{- end }}
      {{- if .Values.volumes }}
      {{- toYaml .Values.volumes | nindent 8 }}
      {{- end }}
      {{- end }}
      {{- with .Values.podSpec }}
      {{- toYaml . | nindent 6 }}
      {{- end }}
{{- end }}