helm chart error can't evaluate field Values in type interface {}

Question

I know this is some kind of syntax/yaml structure related error but the message is so cryptic I have no idea what the issue is:

Error: render error in "mychart/templates/ingress.yaml": template: mychart/templates/ingress.yaml:35:37: executing "mychart/templates/ingress.yaml" at <.Values.network.appP...>: can't evaluate field Values in type interface {} 

This is in my values.yaml:

network:   appPort: 4141 

This is the ingress.yaml:

{{- $fullName := include "mychart.fullname" . -}} apiVersion: extensions/v1beta1 kind: Ingress metadata:   name: {{ $fullName }}   labels:     app.kubernetes.io/name: {{ include "mychart.name" . }}     helm.sh/chart: {{ include "mychart.chart" . }}     app.kubernetes.io/instance: {{ .Release.Name }}     app.kubernetes.io/managed-by: {{ .Release.Service }}   {{- with .Values.ingress.annotations }}   annotations:     {{- toYaml . | nindent 4 }}   {{- end }} spec: {{- if .Values.ingress.tls }}   tls:   {{- range .Values.ingress.tls }}     - hosts:       {{- range .hosts }}         - {{ . | quote }}       {{- end }}       secretName: {{ .secretName }}   {{- end }} {{- end }}   rules:   {{- range .Values.ingress.hosts }}     - host: {{ .host | quote }}       http:         paths:         {{- range .paths }}           - path: {{ . }}             backend:               serviceName: {{ $fullName }}               servicePort: {{ .Values.network.appPort }}         {{- end }}   {{- end }} 

Why doesn't {{ .Values.network.appPort }} work? I have used values with this same structure in other places

Answer 1

Isn't it just scope issue?

Try something as below

{{- $fullName := include "mychart.fullname" . -}} {{- $networkAppPort  := .Values.network.appPort -}} ... .... omitted code ...       http:         paths:         {{- range .paths }}           - path: {{ . }}             backend:               serviceName: {{ $fullName }}               servicePort: {{ $networkAppPort }}         {{- end }}   {{- end }} 

Answer 2

I use helm3 and I have the same error message, when i run helm template my-chart. In my case, i have define wrongly in values.yaml,

WRONG configuration (In my values.yaml missing path under paths):

ingress:   enabled: true   annotations:      kubernetes.io/ingress.class: "nginx"      nginx.ingress.kubernetes.io/rewrite-target: /$2      nginx.ingress.kubernetes.io/ssl-redirect: "false"      nginx.ingress.kubernetes.io/use-regex: "true"    hosts:     - host: "dev"       paths:       - /dev(/|$)(.*)   tls: [] 

correct the ingress definition like this , it works

ingress:   enabled: true   annotations:      kubernetes.io/ingress.class: "nginx"      nginx.ingress.kubernetes.io/rewrite-target: /$2      nginx.ingress.kubernetes.io/ssl-redirect: "false"      nginx.ingress.kubernetes.io/use-regex: "true"    hosts:     - host:       paths:       - path: "/dev(/|$)(.*)"   tls: [] 

my ingress template, ingress.yaml, which is generated automatically via helm

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