update

content/post/mysql-backup.md

@@ -18,7 +18,7 @@ categories: ["database"]
     mv percona-xtrabackup-8.4.0-5-Linux-x86_64.glibc2.34-minimal /opt/pxb
     ```
 
-### 创建备份用户和目录
+### 备份前准备工作
 - **备份目录如果是 nfs，挂载时需指定 sync 选项**
 - 创建备份用户
     ```sql
@@ -90,11 +90,13 @@ categories: ["database"]
 dnf install mariadb-backup
 ```
 
-### 创建备份用户
-```sql
-CREATE USER backup@localhost IDENTIFIED BY 'Backup_1234';
-GRANT SELECT, RELOAD, PROCESS, REPLICATION CLIENT ON *.* TO backup@localhost;
-```
+### 备份前准备工作
+- **备份目录如果是 nfs，挂载时需指定 sync 选项**
+- 创建备份用户
+    ```sql
+    CREATE USER backup@localhost IDENTIFIED BY 'Backup_1234';
+    GRANT RELOAD, PROCESS, LOCK TABLES, BINLOG MONITOR ON *.* TO backup@localhost;
+    ```
 
 ### 全量备份和恢复
 - 备份
@@ -165,7 +167,7 @@ CREATE USER shell@'%' IDENTIFIED BY 'Shell_1234';
 GRANT PROCESS, RELOAD, LOCK TABLES ON *.* TO shell@localhost;
 ```
 
-### 备份命令
+### 常用备份命令
 - 简化 msyql-shell 命令
     ```bash
     export MYSQLSH="/opt/mysql-shell -h 'mysql-ip' -P 3306 -u shell -p 'Shell_1234'"