How to use hyphen key with hyphen in kubernetes secret? - kubernetes

Question

I want to inject the following secret key/value in pods: test-with=1 and testwith=1. First I create the secret:
kubectl create secret generic test --from-literal=test-with=1 --from-literal=testwith=0
Then I create a yaml file for a pod with the following specification:
containers:
...
envFrom:
- secretRef:
name: test
The pod is running, but the result of env command inside the container only shows:
...
TERM=xterm
testwith=0
...
The test-with=1 does not show up. How can i declare the secret to see the key/value?

Answer 1

Variables with delimitations in names are displayed at the top when viewed through printenv.
Checked:
$ kubectl create secret generic test --from-literal=test-with=1 --from-literal=testwith=0
$ kubectl get secret/test -o yaml
apiVersion: v1
data:
test-with: MQ==
testwith: MA==
kind: Secret
metadata:
...
cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: Pod
metadata:
name: check-env
spec:
volumes:
- name: shared-data
emptyDir: {}
containers:
- name: nginx
image: nginx
envFrom:
- secretRef:
name: test
volumeMounts:
- name: shared-data
mountPath: /usr/share/nginx/html
hostNetwork: true
dnsPolicy: Default
EOF
$ kubectl exec -it shell-demo -- printenv | grep test
test-with=1
testwith=0
GKE v1.18.16-gke.502

Answer 2

I don't see any issue. Here is how I replicated it:
kubectl create secret generic test --from-literal=test-with=1 --from-literal=testwith=0
cat<<EOF | kubectl apply -f-
apiVersion: v1
kind: Pod
metadata:
labels:
run: cent
name: cent
spec:
containers:
- image: centos:7
name: cent
command:
- sleep
- "9999"
envFrom:
- secretRef:
name: test
EOF
➜ ~ kubectl exec -it cent -- bash
[root#cent /]# env | grep test
test-with=1
testwith=0
Most probably this is image issue