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doc/piaowudbbak.sh

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+#!/bin/bash
+#ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'P0i8a1o9@#';
+#ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'P0i8a1o9@#';
+#FLUSH PRIVILEGES;
+#chmod +x /mydata/docker/piaowu/mysql/piaowudbbak.sh
+DATE=$(date +%Y%m%d_%H%M%S)
+BACKUP_DIR="/mydata/docker/piaowu/mysql/bak"
+MYSQL_USER="root"
+MYSQL_PASSWORD="P2i0a2o6w@u"
+DATABASE_NAME="piaowu"
+CONTAINER_NAME="piaowumysql"  # 替换为你的MySQL容器名或ID
+
+
+
+# 创建备份目录（如果不存在）
+mkdir -p $BACKUP_DIR
+
+# 在MySQL容器内部执行 mysqldump 命令
+docker exec $CONTAINER_NAME \
+  sh -c "exec mysqldump -u$MYSQL_USER -p'$MYSQL_PASSWORD' $DATABASE_NAME" > "$BACKUP_DIR/piaoruo_bak_$DATE.sql"
+
+# 检查是否成功导出
+if [ $? -eq 0 ]; then
+  echo "✅ 数据库备份成功: $BACKUP_DIR/piaowu_bak_$DATE.sql"
+else
+  echo "❌ 数据库备份失败"
+  exit 1
+fi
+
+# 删除超过30天的旧备份
+find $BACKUP_DIR -type f -name "*.sql" -mtime +30 -exec rm {} \;
+
+
+#定时执行备份任务 cron
+#0 1 * * * /mydata/docker/piaowu/mysql/piaowudbbak.sh >> /mydata/docker/piaowu/mysql/bak.log 2>&1