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zipkubernetes-helm

Read from Zip files in Helm Templates

I have the following Template

apiVersion: v1
kind: Secret
metadata:
  name: poc-secrets-secret-data-txt-{{ .Release.Namespace }}
type: Opaque
stringData:
  myZipdata: {{ .Files.Get "secrets/base64.zip" }}

I get the following error when i do install helm

error converting YAML to JSON: yaml: control characters are not allowed

My use case is to send zip file only. Can anyone suggest ?

Solution

  • The YAML structure can only hold textual data. Similarly, within a Secret, stringData specifically holds textual data. Neither channel can communicate a (binary) zip file.

    However: if you use data instead of stringData, that's allowed to contain binary data, and the Helm b64enc function can base64 encode arbitrary binary data into a valid YAML string. There's an example in the Helm documentation "Accessing Files Inside Templates" page. For your example, you can:

    apiVersion: v1
kind: Secret
metadata:
  name: poc-secrets-secret-data-txt-{{ .Release.Namespace }}
type: Opaque
data: # not stringData
  myZipdata: {{ .Files.Get "secrets/base64.zip" | b64enc }} # add base64 encode