diff --git a/charts/nginx/templates/_helpers.tpl b/charts/nginx/templates/_helpers.tpl
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+++ b/charts/nginx/templates/_helpers.tpl
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+{{/*
+Copyright Broadcom, Inc. All Rights Reserved.
+SPDX-License-Identifier: APACHE-2.0
+*/}}
+
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Return the proper NGINX image name
+*/}}
+{{- define "nginx.image" -}}
+{{ include "common.images.image" (dict "imageRoot" .Values.image "global" .Values.global) }}
+{{- end -}}
+
+{{/*
+Return the proper GIT image name
+*/}}
+{{- define "nginx.cloneStaticSiteFromGit.image" -}}
+{{ include "common.images.image" (dict "imageRoot" .Values.cloneStaticSiteFromGit.image "global" .Values.global) }}
+{{- end -}}
+
+{{/*
+Return the proper Prometheus metrics image name
+*/}}
+{{- define "nginx.metrics.image" -}}
+{{ include "common.images.image" (dict "imageRoot" .Values.metrics.image "global" .Values.global) }}
+{{- end -}}
+
+{{/*
+Return the proper Docker Image Registry Secret Names
+*/}}
+{{- define "nginx.imagePullSecrets" -}}
+{{ include "common.images.renderPullSecrets" (dict "images" (list .Values.image .Values.cloneStaticSiteFromGit.image .Values.metrics.image) "context" $) }}
+{{- end -}}
+
+{{/*
+Return true if a static site should be mounted in the NGINX container
+*/}}
+{{- define "nginx.useStaticSite" -}}
+{{- if or .Values.cloneStaticSiteFromGit.enabled .Values.staticSiteConfigmap .Values.staticSitePVC }}
+    {- true -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Return the volume to use to mount the static site in the NGINX container
+*/}}
+{{- define "nginx.staticSiteVolume" -}}
+{{- if .Values.cloneStaticSiteFromGit.enabled }}
+emptyDir: {}
+{{- else if .Values.staticSiteConfigmap }}
+configMap:
+  name: {{ printf "%s" (tpl .Values.staticSiteConfigmap $) -}}
+{{- else if .Values.staticSitePVC }}
+persistentVolumeClaim:
+  claimName: {{ printf "%s" (tpl .Values.staticSitePVC $) -}}
+{{- end }}
+{{- end -}}
+
+{{/*
+Return the custom NGINX server block configmap.
+*/}}
+{{- define "nginx.serverBlockConfigmapName" -}}
+{{- if .Values.existingServerBlockConfigmap -}}
+    {{- printf "%s" (tpl .Values.existingServerBlockConfigmap $) -}}
+{{- else -}}
+    {{- printf "%s-server-block" (include "common.names.fullname" .) -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Return the custom NGINX stream server block configmap.
+*/}}
+{{- define "nginx.streamServerBlockConfigmapName" -}}
+{{- if .Values.existingStreamServerBlockConfigmap -}}
+    {{- printf "%s" (tpl .Values.existingStreamServerBlockConfigmap $) -}}
+{{- else -}}
+    {{- printf "%s-stream-server-block" (include "common.names.fullname" .) -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Compile all warnings into a single message, and call fail.
+*/}}
+{{- define "nginx.validateValues" -}}
+{{- $messages := list -}}
+{{- $messages := append $messages (include "nginx.validateValues.cloneStaticSiteFromGit" .) -}}
+{{- $messages := append $messages (include "nginx.validateValues.extraVolumes" .) -}}
+{{- $messages := without $messages "" -}}
+{{- $message := join "\n" $messages -}}
+
+{{- if $message -}}
+{{-   printf "\nVALUES VALIDATION:\n%s" $message | fail -}}
+{{- end -}}
+{{- end -}}
+
+{{/* Validate values of NGINX - Clone StaticSite from Git configuration */}}
+{{- define "nginx.validateValues.cloneStaticSiteFromGit" -}}
+{{- if and .Values.cloneStaticSiteFromGit.enabled (or (not .Values.cloneStaticSiteFromGit.repository) (not .Values.cloneStaticSiteFromGit.branch)) -}}
+nginx: cloneStaticSiteFromGit
+    When enabling cloing a static site from a Git repository, both the Git repository and the Git branch must be provided.
+    Please provide them by setting the `cloneStaticSiteFromGit.repository` and `cloneStaticSiteFromGit.branch` parameters.
+{{- end -}}
+{{- end -}}
+
+{{/* Validate values of NGINX - Incorrect extra volume settings */}}
+{{- define "nginx.validateValues.extraVolumes" -}}
+{{- if and (.Values.extraVolumes) (not (or .Values.extraVolumeMounts .Values.cloneStaticSiteFromGit.extraVolumeMounts)) -}}
+nginx: missing-extra-volume-mounts
+    You specified extra volumes but not mount points for them. Please set
+    the extraVolumeMounts value
+{{- end -}}
+{{- end -}}
+
+{{/*
+ Create the name of the service account to use
+ */}}
+{{- define "nginx.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create -}}
+    {{ default (include "common.names.fullname" .) .Values.serviceAccount.name }}
+{{- else -}}
+    {{ default "default" .Values.serviceAccount.name }}
+{{- end -}}
+{{- end -}}