Update deployment yaml file to match with the one on tutorial page

Refer to this tutorial:
https://kubernetes.io/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/

mysql-wordpress-pd/mysql-deployment.yaml

@@ -25,7 +25,7 @@ spec:
     requests:
       storage: 20Gi
 ---
-apiVersion: apps/v1 # for k8s versions before 1.9.0 use apps/v1beta2  and before 1.8.0 use extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: wordpress-mysql
@@ -45,7 +45,7 @@ spec:
         tier: mysql
     spec:
       containers:
-      - image: mysql:5.6
+      - image: mysql:8.0
         name: mysql
         env:
         - name: MYSQL_ROOT_PASSWORD
@@ -53,9 +53,15 @@ spec:
             secretKeyRef:
               name: mysql-pass
               key: password
-        livenessProbe:
-          tcpSocket:
-            port: 3306
+        - name: MYSQL_DATABASE
+          value: wordpress
+        - name: MYSQL_USER
+          value: wordpress
+        - name: MYSQL_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: mysql-pass
+              key: password
         ports:
         - containerPort: 3306
           name: mysql

mysql-wordpress-pd/wordpress-deployment.yaml

@@ -25,7 +25,7 @@ spec:
     requests:
       storage: 20Gi
 ---
-apiVersion: apps/v1 #  for k8s versions before 1.9.0 use apps/v1beta2  and before 1.8.0 use extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: wordpress
@@ -45,7 +45,7 @@ spec:
         tier: frontend
     spec:
       containers:
-      - image: wordpress:4.8-apache
+      - image: wordpress:6.2.1-apache
         name: wordpress
         env:
         - name: WORDPRESS_DB_HOST
@@ -55,6 +55,8 @@ spec:
             secretKeyRef:
               name: mysql-pass
               key: password
+        - name: WORDPRESS_DB_USER
+          value: wordpress
         ports:
         - containerPort: 80
           name: wordpress