cant run mysql statefulset in kubernetes - mysql

Question

I've just started learning kubernetes and was playing around in katakoda platform. I created a statefulset for mysql. It is just a test so i didnt declare any pvc and mount any volumes. It's declaration and the service's declaration in yml:
---
apiVersion: v1
kind: Service
metadata:
name: mysql-headless
labels:
run: mysql-sts-demo
spec:
ports:
- port: 3306
name: db
selector:
run: mysql-sts-demo
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: mysql-sts-demo
spec:
serviceName: "mysql-headless"
replicas: 1
selector:
matchLabels:
run: mysql-sts-demo
template:
metadata:
labels:
run: mysql-sts-demo
spec:
containers:
- name: mysql
image: mysql:5.7.8
env:
- name: MYSQL_ROOT_PASSWORD
valueFrom:
secretKeyRef:
name: mysql-secrets
key: ROOT_PASSWORD
- name: MYSQL_DATABASE
valueFrom:
secretKeyRef:
name: mysql-secrets
key: DBNAME
- name: MYSQL_USER
valueFrom:
secretKeyRef:
name: mysql-secret
key: USER
- name: MYSQL_PASSWORD
valueFrom:
secretKeyRef:
name: mysql-secrets
key: PASSWORD
it creates those resources successfully , but when I type kubectl get statefulsets , my ss is always being displayed as not ready. What may the issue be? Btw I need it for using with a spring petclinic app which I declared and launched previously as a deployment .

Answer 1

can you paste the logs for statefulsets
or an output of kubectl get events and kubectl describe <your stateful-set name>
now coming to secrets can you check whether those secrets which you are using in your stateful-sets definitions are already present using kubectl get secrets