chart/templates/istio-base/imagepullsecret.yaml

+{{- if and .Values.istioBase.enabled ( include "imagePullSecret" . ) }}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: private-registry
+  namespace: istio-base
+  labels:
+    app.kubernetes.io/name: istio-base
+    app.kubernetes.io/component: "core"
+    {{- include "commonLabels" . | nindent 4}}
+type: kubernetes.io/dockerconfigjson
+data:
+  .dockerconfigjson: {{ template "imagePullSecret" . }}
+{{- end }}
\ No newline at end of file

chart/templates/istio-gateway/imagepullsecret.yaml

+{{- if and .Values.istioGateway.enabled ( include "imagePullSecret" . ) }}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: private-registry
+  namespace: istio-gateway
+  labels:
+    app.kubernetes.io/name: istio-gateway
+    app.kubernetes.io/component: "core"
+    {{- include "commonLabels" . | nindent 4}}
+type: kubernetes.io/dockerconfigjson
+data:
+  .dockerconfigjson: {{ template "imagePullSecret" . }}
+{{- end }}
\ No newline at end of file

chart/templates/istiod/imagepullsecret.yaml

+{{- if and .Values.istiod.enabled ( include "imagePullSecret" . ) }}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: private-registry
+  namespace: istiod
+  labels:
+    app.kubernetes.io/name: istiod
+    app.kubernetes.io/component: "core"
+    {{- include "commonLabels" . | nindent 4}}
+type: kubernetes.io/dockerconfigjson
+data:
+  .dockerconfigjson: {{ template "imagePullSecret" . }}
+{{- end }}
\ No newline at end of file