Postgres user not created Kubernetes - postgresql

Question

I have the following YAML file for create a postgres server instance
kind: Deployment
apiVersion: apps/v1beta1
metadata:
name: spring-demo-db
labels:
app: spring-demo-application
spec:
replicas: 1
selector:
matchLabels:
app: spring-demo-db
template:
metadata:
creationTimestamp: null
labels:
app: spring-demo-db
spec:
containers:
- name: spring-demo-db
image: postgres:10.4
ports:
- name: spring-demo-db
containerPort: 5432
protocol: TCP
env:
- name: POSTGRES_PASSWORD
value: "springdemo"
- name: POSTGRES_USER
value: "springdemo"
- name: POSTGRES_DB
value: "springdemo"
volumeMounts:
- mountPath: /var/lib/postgresql/data
name: postgres-storage
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
imagePullPolicy: IfNotPresent
volumes:
- name: "postgres-storage"
persistentVolumeClaim:
claimName: spring-demo-pv-claim
restartPolicy: Always
But when ssh into the container user springdemo not created. I have been struggling all day.What could be the problem for this
Anyone who can help me?

Answer 1

You didn't mention what command you're running and what error you're getting, so I'm guessing here, but try this:
kind: Deployment
apiVersion: apps/v1beta1
metadata:
name: spring-demo-db
labels:
app: spring-demo-application
spec:
replicas: 1
selector:
matchLabels:
app: spring-demo-db
template:
metadata:
creationTimestamp: null
labels:
app: spring-demo-db
spec:
containers:
- name: spring-demo-db
image: postgres:10.4
ports:
- name: spring-demo-db
containerPort: 5432
protocol: TCP
env:
- name: POSTGRES_USER
value: "springdemo"
- name: POSTGRES_DB
value: "springdemo"
- name: POSTGRES_PASSWORD
value: "springdemo"
volumeMounts:
- mountPath: /var/lib/postgresql/data
name: postgres-storage
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
imagePullPolicy: IfNotPresent
volumes:
- name: "postgres-storage"
persistentVolumeClaim:
claimName: spring-demo-pv-claim
restartPolicy: Always
But if it doesn't work, just use the Helm chart, because, among other issues, you are passing the password in an insecure way, which is a bad idea.