not load secret in k8s - kubernetes

Question

I am learning to use k8s and I have a problem. I have been able to perform several deployments with the same yml without problems. My problem is that when I mount the secret volume it loads me the directory with the variables but it does not detect them as environments variable
my secret
apiVersion: v1
kind: Secret
metadata:
namespace: insertmendoza
name: authentications-sercret
type: Opaque
data:
DB_USERNAME: aW5zZXJ0bWVuZG96YQ==
DB_PASSWORD: aktOUDlaZHRFTE1tNks1
TOKEN_EXPIRES_IN: ODQ2MDA=
SECRET_KEY: aXRzaXNzZWd1cmU=
apiVersion: apps/v1
kind: Deployment
metadata:
namespace: insertmendoza
name: sarys-authentications
spec:
replicas: 1
selector:
matchLabels:
app: sarys-authentications
template:
metadata:
labels:
app: sarys-authentications
spec:
containers:
- name: sarys-authentications
image: 192.168.88.246:32000/custom:image
imagePullPolicy: Always
resources:
limits:
memory: "500Mi"
cpu: "50m"
ports:
- containerPort: 8000
envFrom:
- configMapRef:
name: authentications-config
volumeMounts:
- name: config-volumen
mountPath: /etc/config/
readOnly: true
- name: secret-volumen
mountPath: /etc/secret/
readOnly: true
volumes:
- name: config-volumen
configMap:
name: authentications-config
- name: secret-volumen
secret:
secretName: authentications-sercret
> microservice#1.0.0 start
> node dist/index.js
{
ENGINE: 'postgres',
NAME: 'insertmendoza',
USER: undefined, <-- not load
PASSWORD: undefined,<-- not load
HOST: 'db-service',
PORT: '5432'
}
if I add them manually if it recognizes them
env:
- name: DB_USERNAME
valueFrom:
secretKeyRef:
name: authentications-sercret
key: DB_USERNAME
- name: DB_PASSWORD
valueFrom:
secretKeyRef:
name: authentications-sercret
key: DB_PASSWORD
> microservice#1.0.0 start
> node dist/index.js
{
ENGINE: 'postgres',
NAME: 'insertmendoza',
USER: 'insertmendoza', <-- work
PASSWORD: 'jKNP9ZdtELMm6K5', <-- work
HOST: 'db-service',
PORT: '5432'
}
listening queue
listening on *:8000
in the directory where I mount the secrets exist!
/etc/secret # ls
DB_PASSWORD DB_USERNAME SECRET_KEY TOKEN_EXPIRES_IN
/etc/secret # cat DB_PASSWORD
jKNP9ZdtELMm6K5/etc/secret #
EDIT
My solution speed is
envFrom:
- configMapRef:
name: authentications-config
- secretRef: <<--
name: authentications-sercret <<--
I hope it serves you, greetings from Argentina Insert Mendoza

Answer 1

If I understand the problem correctly, you aren't getting the secrets loaded into the environment. It looks like you're loading it incorrectly, use the envFrom form as documented here.
Using your example it would be:
apiVersion: v1
kind: Secret
metadata:
namespace: insertmendoza
name: authentications-sercret
type: Opaque
data:
DB_USERNAME: aW5zZXJ0bWVuZG96YQ==
DB_PASSWORD: aktOUDlaZHRFTE1tNks1
TOKEN_EXPIRES_IN: ODQ2MDA=
SECRET_KEY: aXRzaXNzZWd1cmU=
---
apiVersion: apps/v1
kind: Deployment
metadata:
namespace: insertmendoza
name: sarys-authentications
spec:
replicas: 1
selector:
matchLabels:
app: sarys-authentications
template:
metadata:
labels:
app: sarys-authentications
spec:
containers:
- name: sarys-authentications
image: 192.168.88.246:32000/custom:image
imagePullPolicy: Always
resources:
limits:
memory: "500Mi"
cpu: "50m"
ports:
- containerPort: 8000
envFrom:
- configMapRef:
name: authentications-config
- secretRef:
name: authentications-sercret
volumeMounts:
- name: config-volumen
mountPath: /etc/config/
readOnly: true
volumes:
- name: config-volumen
configMap:
name: authentications-config
Note the volume and mount was removed and just add the secretRef section. Those should now be exported as environment variables in your pod.