secret-and-configmap-deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: mariadb
  name: mariadb-deployment
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mariadb
  template:
    metadata:
      labels:
        app: mariadb
    spec:
      containers:
      - image: docker.io/mariadb:10.4
        name: mariadb
        env:
          - name: MYSQL_ROOT_PASSWORD
            valueFrom:
              secretKeyRef:
                name: mariadb-root-password
                key: password
        envFrom:
        - secretRef:
            name: mariadb-user-creds