[zh-cn] Resync some MySQL example YAMLs

content/zh-cn/examples/application/mysql/mysql-configmap.yaml

@@ -4,15 +4,14 @@ metadata:
   name: mysql
   labels:
     app: mysql
+    app.kubernetes.io/name: mysql
 data:
   primary.cnf: |
-    # Apply this config only on the primary.
+    # 仅在主服务器上应用此配置
     [mysqld]
     log-bin
-    datadir=/var/lib/mysql/mysql
   replica.cnf: |
-    # Apply this config only on replicas.
+    # 仅在副本服务器上应用此配置
     [mysqld]
     super-read-only
-    datadir=/var/lib/mysql/mysql
 

content/zh-cn/examples/application/mysql/mysql-services.yaml

@@ -1,10 +1,11 @@
-# Headless service for stable DNS entries of StatefulSet members.
+# 为 StatefulSet 成员提供稳定的 DNS 表项的无头服务（Headless Service）
 apiVersion: v1
 kind: Service
 metadata:
   name: mysql
   labels:
     app: mysql
+    app.kubernetes.io/name: mysql
 spec:
   ports:
   - name: mysql
@@ -13,14 +14,16 @@ spec:
   selector:
     app: mysql
 ---
-# Client service for connecting to any MySQL instance for reads.
-# For writes, you must instead connect to the primary: mysql-0.mysql.
+# 用于连接到任一 MySQL 实例执行读操作的客户端服务
+# 对于写操作，你必须连接到主服务器：mysql-0.mysql
 apiVersion: v1
 kind: Service
 metadata:
   name: mysql-read
   labels:
     app: mysql
+    app.kubernetes.io/name: mysql
+    readonly: "true"
 spec:
   ports:
   - name: mysql

content/zh-cn/examples/application/mysql/mysql-statefulset.yaml

@@ -6,12 +6,14 @@ spec:
   selector:
     matchLabels:
       app: mysql
+      app.kubernetes.io/name: mysql
   serviceName: mysql
   replicas: 3
   template:
     metadata:
       labels:
         app: mysql
+        app.kubernetes.io/name: mysql
     spec:
       initContainers:
       - name: init-mysql
@@ -27,7 +29,6 @@ spec:
           echo [mysqld] > /mnt/conf.d/server-id.cnf
           # 添加偏移量以避免使用 server-id=0 这一保留值。
           echo server-id=$((100 + $ordinal)) >> /mnt/conf.d/server-id.cnf
-          # Copy appropriate conf.d files from config-map to emptyDir.
           # 将合适的 conf.d 文件从 config-map 复制到 emptyDir。
           if [[ $ordinal -eq 0 ]]; then
             cp /mnt/config-map/primary.cnf /mnt/conf.d/