MySql备份和恢复

1.mysql备份

查询出需要备份的数据库:

  1: mysql -u root -psywu

  2: 

  3: mysql> show databases;

  4: +--------------------+

  5: | Database           |

  6: +--------------------+

  7: | information_schema |

  8: | cdcol              |

  9: | mysql              |

 10: | performance_schema |

 11: | phpmyadmin         |

 12: | test               |

 13: | webauth            |

 14: | wordpress          |

 15: +--------------------+

 16: 8 rows in set (0.00 sec)

备份wordpress数据库(单个数据库备份):

语法: mysqldump [OPTIONS] database [tables]

 1: mysqldump -u root -p wordpress > e:\temp\db_wordpress_bkp.sql

  2: Enter password: ****

打开e:\temp\db_wordpress_bkp.sql 可以看到关于备份的数据库、删除表和建表的信息:

  1: -- MySQL dump 10.13  Distrib 5.6.20, for Win32 (x86)

  2: --

  3: -- Host: localhost    Database: wordpress

  4: -- ------------------------------------------------------

  5: -- Server version5.6.20

  6: 

  7: /*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;

  8: /*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;

  9: /*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;

 10: /*!40101 SET NAMES utf8 */;

 11: /*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;

 12: /*!40103 SET TIME_ZONE='+00:00' */;

 13: /*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;

 14: /*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;

 15: /*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;

 16: /*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

 17: 

 18: --

 19: -- Table structure for table `wp_commentmeta`

 20: --

 21: 

 22: DROP TABLE IF EXISTS `wp_commentmeta`;

 23: /*!40101 SET @saved_cs_client     = @@character_set_client */;

 24: /*!40101 SET character_set_client = utf8 */;

 25: CREATE TABLE `wp_commentmeta` (

 26:   `meta_id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,

 27:   `comment_id` bigint(20) unsigned NOT NULL DEFAULT '0',

 28:   `meta_key` varchar(255) DEFAULT NULL,

 29:   `meta_value` longtext,

 30:   PRIMARY KEY (`meta_id`),

 31:   KEY `comment_id` (`comment_id`),

 32:   KEY `meta_key` (`meta_key`)

 33: ) ENGINE=InnoDB DEFAULT CHARSET=utf8;

 34: /*!40101 SET character_set_client = @saved_cs_client */;

 35: 

备份test和MySQL数据库(多个数据库):

语法:mysqldump [OPTIONS] --databases [OPTIONS] DB1 [DB2 DB3...]

  1: mysqldump -u root -p --databases test mysql > e:\temp\db_test_mysql.sql

  2: Enter password: ****

备份所有数据库: 

语法:mysqldump [OPTIONS] --all-databases [OPTIONS]

  1: mysqldump -u root -p --all-databases > e:\temp\db_all_bkp.sql

  2: Enter password: ****

2.mysql恢复

恢复数据库需要先创建数据库:

  1: mysql> create database wordpress;

  2: Query OK, 1 row affected (0.00 sec)

然后从备份中还原数据库数据:

  1: mysql -u root -p wordpress <E:\temp\db_wordpress_bkp.sql

  2: Enter password: ****

备份本地数据库并恢复到远程服务器上:

  1: mysql -u root -ps wordpress | mysql -u root -psss --host=remote_server -C wordpress

-C表示 --compress      Use compression in server/client protocol.