MYSQL备份利用mysqldump将一个数据库复制到另一个数据库

Posted 2020-10-03 倔强小梦 ☺

假设要将服务器A上的数据库test备份到服务器B

 

1.在服务器B上新建数据库cp_test

mysql> create database cp_test;
Query OK, 1 row affected (0.00 sec)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| cp_test     |
| mysql              |
| performance_schema |
+--------------------+
4 rows in set (0.00 sec)
mysql> 

2.在服务器B上远程访问服务器A，并将服务器A上的数据库备份到服务器B（本人只是作为测试，所以就跳过了锁表）

执行时间3分钟

[[email protected] ~]# mysqldump -h192.168.1.1-ubob -p --skip-add-locks test >/root/cp_test.sql
Enter password: 
Warning: A partial dump from a server that has GTIDs will by default include the GTIDs of all transactions, even those that changed suppressed parts of the database.
 If you don‘t want to restore GTIDs, pass --set-gtid-purged=OFF. To make a complete dump, pass --all-databases --triggers --routines --events. 
[[email protected] ~]# 

3.大概1165M，备份之间在3分钟左右

[[email protected] ~]# ll
total 1192548
-rw-------. 1 root root        959 Jun 22 11:24 anaconda-ks.cfg
-rw-r--r--. 1 root root 1221135418 Aug 18 17:29 cp_test.sql
-rw-r--r--. 1 root root       8785 Jun 22 11:24 install.log
-rw-r--r--. 1 root root       3161 Jun 22 11:24 install.log.syslog
-rw-r--r--. 1 root root       5824 Nov 12  2015 mysql-community-release-el6-5.noarch.rpm

 4.将刚才的备份文件还原到服务器B的cp_test库上

[[email protected] ~]# mysql -f -uroot -p cp_test <cp_test.sql 
Enter password: 
ERROR 1839 (HY000) at line 24: @@GLOBAL.GTID_PURGED can only be set when @@GLOBAL.GTID_MODE = ON.

5.，提示报错，上网查资料，加上-f参数虽然报错，但是仍会执行，其实可以在命令前面加上time，这样可以准确知道具体执行时间

[[email protected] ~]# mysql -uroot -p test <cp_test.sql 
Enter password: 
ERROR 1839 (HY000) at line 24: @@GLOBAL.GTID_PURGED can only be set when @@GLOBAL.GTID_MODE = ON.