MySQL數據庫的備份與恢復（6）——編寫一個mysqldump分表備份腳本

MySQL數據庫的備份與恢復（6）——編寫一個mysqldump分表備份腳本

編寫一個腳本，用於備份某個數據庫中所有的數據表，每個數據表生成一個sql文件。

step1、取出hist數據庫包含的所有表的名稱

[root@Mysql11 tmp]# mysql -uroot -p123456 hist -e "show tables;"
mysql: [Warning] Using a password on the command line interface can be insecure.
+----------------+
| Tables_in_hist |
+----------------+
| course         |
| dept           |
| score          |
| stu            |
| t1             |
+----------------+

step2、過濾掉標題行

[root@Mysql11 tmp]# mysql -uroot -p123456 hist -e "show tables;"|grep -Evi "table"
mysql: [Warning] Using a password on the command line interface can be insecure.
course
dept
score
stu
t1

step3、編寫腳本

vim backup_tables.sh

腳本的內容如下：

### 利用for循環取出數據庫中所有的表名稱，具體的原理參見step1和step2
for tablename in `mysql -uroot -p123456 hist -e "show tables;"|grep -Evi "table"`
do
    ### 針對每個表名稱生成相應的mysqldump命令
    mysqldump -uroot -p123456 --events hist $tablename|gzip > /tmp/${tablename}_bak.sql.gz
done

step4、爲腳本增加可執行權限

[root@Mysql11 tmp]# pwd
/tmp
[root@Mysql11 tmp]# chmod +x backup_tables.sh
[root@Mysql11 tmp]# ll
總用量 4
-rwxr-xr-x. 1 root root 184 7月   2 15:37 backup_tables.sh

step5、執行腳本，查看執行結果

[root@Mysql11 tmp]# ./backup_tables.sh 
mysql: [Warning] Using a password on the command line interface can be insecure.
mysqldump: [Warning] Using a password on the command line interface can be insecure.
mysqldump: [Warning] Using a password on the command line interface can be insecure.
mysqldump: [Warning] Using a password on the command line interface can be insecure.
mysqldump: [Warning] Using a password on the command line interface can be insecure.
mysqldump: [Warning] Using a password on the command line interface can be insecure.
[root@Mysql11 tmp]# ls
backup_tables.sh  course_bak.sql.gz  dept_bak.sql.gz  score_bak.sql.gz  stu_bak.sql.gz  t1_bak.sql.gz