helm chart getting secrets and configmap values using envFrom - kubernetes

Question

I m trying to inject env vars in my helm chart deployment file. my values file looks like this.
values.yaml
envFrom:
- configMapRef:
name: my-config
- secretRef:
name: my-secret
I want to iterate through secrets and configmaps values . This is what I did in deployment.yaml file
envFrom:
{{- range $item := .Values.envFrom }}
{{- $item | toYaml | nindent 14 }}
{{- end }}
But i didn t get the desired result

Answer 1

You can directly use the defined value like:
...
envFrom:
{{- toYaml .Values.envFrom | nindent 6 }}
...
Or Instead of use range, you can use with.
Here is an example:
values.yaml:
envFrom:
- configMapRef:
name: my-config
- secretRef:
name: my-secret
pod.yaml:
apiVersion: v1
kind: Pod
metadata:
name: dapi-test-pod
namespace: test
spec:
containers:
- name: test-container
image: k8s.gcr.io/busybox
command: [ "/bin/sh", "-c", "env" ]
# {{- with .Values.envFrom }} can be here if you dont
# want to define envFrom in this container if envFrom
# is not defined in values.yaml.
# If you want to do that, remove the one below.
envFrom:
{{- with .Values.envFrom }}
{{- toYaml . | nindent 8 }}
{{- end }}
restartPolicy: Never
The output is:
c[_] > helm template test .
---
# Source: test/templates/test.yaml
apiVersion: v1
kind: Pod
metadata:
name: dapi-test-pod
namespace: test
spec:
containers:
- name: test-container
image: k8s.gcr.io/busybox
command: [ "/bin/sh", "-c", "env" ]
envFrom:
- configMapRef:
name: my-config
- secretRef:
name: my-secret
restartPolicy: Never