MySQL deployment with PVC, Limits, my.cnf with LoadBalancer

PVC

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mysql-pvc
spec:
  accessModes:
    - ReadWriteOnce  
  resources:
    requests:
      storage: 40Gi 

MySQL config

apiVersion: v1
kind: ConfigMap
metadata:
  name: mysql-config
data:
  my.cnf: |
    [mysqld]
    innodb_flush_log_at_trx_commit=2
    sync_binlog=0
    bulk_insert_buffer_size=256M
    innodb_buffer_pool_size=4G
    innodb_log_file_size=1G
    innodb_log_buffer_size=64M
    innodb_redo_log_capacity = 2G
    max_allowed_packet = 256M

MySQL Deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysqlsingle
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mysqlsingle
  template:
    metadata:
      labels:
        app: mysqlsingle
    spec:
      containers:
      - name: mysqlsingle
        image: mysql:8.0
        env:
        - name: MYSQL_ROOT_PASSWORD
          value: "123"
        ports:
        - containerPort: 3306
        resources:
          requests:
            memory: "4Gi"    
            cpu: "2"         
          limits:
            memory: "8Gi"    
            cpu: "4"
        volumeMounts:
        - mountPath: /var/lib/mysql  
          name: mysql-data
        - mountPath: /etc/mysql/my.cnf
          name: mysql-config-volume
          subPath: my.cnf
      volumes:
      - name: mysql-data
        persistentVolumeClaim:
          claimName: mysql-pvc
      - name: mysql-config-volume
        configMap:
          name: mysql-config                             
---
apiVersion: v1
kind: Service
metadata:
  name: mysqlsingle
spec:
  type: LoadBalancer
  selector:
    app: mysqlsingle
  ports:
  - port: 3306
    targetPort: 3306