Helm templating doesn't let me use dash in names

Question

I am creating a helm chart for my app. In the templates directory, I have a config-map.yaml with this in it


{{- with Values.xyz }} 
  xyz.abc-def: {{ .abc-def }} 
{{- end }}

When I try to run helm install I get a

Error: parse error in "config-map.yaml": template:config-map.yaml:2: unexpected bad character U+002D '-' in command.

Is there a way to use dashes in the name and variable for helm?

Could you share the full (sanitized) ConfigMap? In case it helps here are examples of the structure a ConfigMap should be compiled to: https://kubernetes.io/docs/concepts/configuration/configmap/ — Leif Jones, Sep 12 '20 at 04:23
Here is a pretty old issue about this problem https://github.com/helm/helm/issues/2192 that is closed, and here is my fresh issue to document this problem: https://github.com/helm/helm/issues/10632 — Murz, Feb 01 '22 at 11:05

score 38 · Accepted Answer · answered Sep 12 '20 at 18:06

38

Might be worth trying using index method:

xyz.abc-def: {{ index .Values.xyz "abc-def" }}

looks like it's still restricted by helm to allow hyphens in variable names (as well in subchart names) and index is a workaround

answered Sep 12 '20 at 18:06

Anna Slastnikova

1,260
9
9

1

When I try the index, it gives me "error calling index: index of untyped nil" – user1729409 Sep 14 '20 at 17:40
1

sorry, is `{{ index .Values "xyz" "abc-def" }}` working? – Anna Slastnikova Sep 14 '20 at 20:19
2

actually, it looks like your first post was correct. I made a typo. – user1729409 Sep 14 '20 at 23:54
@user1729409 typo helped me look for typos and saved a lot of time :) – mbxzxz May 12 '22 at 06:00
it works for me only if single quotes were added `xyz.abc-def: '{{ index .Values.xyz "abc-def" }}'` – iamnicoj Oct 15 '22 at 17:38

score 1 · Answer 2 · answered May 31 '23 at 14:02

1

For future or similar questions

I had a nested value like this in values.yaml:

gitlab-runner:
  gitlabUrl: http://192.168.49.2:31122

I wanted to reference it in configmap.yaml, in that case i used double-quotes twice:

apiVersion: v1
kind: ConfigMap
metadata:
  name: gitlab-config
#   namespace: {{ .Release.Name }}-ns
data:
  gitlab.rb: |
    external_url '{{ index .Values "gitlab-runner" "gitlabUrl" }}'

answered May 31 '23 at 14:02

deepGrave

320
3
11

Thanks, i had a same use case and it worked for me. – raghu_manne Aug 25 '23 at 07:38

score 0 · Answer 3 · answered Jan 19 '21 at 16:49

0

I faced the same issue because the resource defined had a '-' in its name:

resources:
            {{- with .Values.my-value }}

After I removed the '-', the error disappeared:

resources:
            {{- with .Values.myvalue }}

answered Jan 19 '21 at 16:49

Brini

77
5

1

If you remove '-' then you also rename it to the values file. – Yeahia Md Abid Jan 19 '23 at 10:53

Helm templating doesn't let me use dash in names

3 Answers3

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