----1.编译安装percona-xtrabackup yum install cmake gcc gcc-c++ libaio libaio-devel automake autoconf bzr \ bison libtool ncurses-devel zlib-devel libgcrypt-devel wget http://www.percona.com/downloads/XtraBackup/XtraBackup-2.1.9/source/perc
----1.编译安装percona-xtrabackup
yum install cmake gcc gcc-c++ libaio libaio-devel automake autoconf bzr \
bison libtool ncurses-devel zlib-devel libgcrypt-devel
wget http://www.percona.com/downloads/XtraBackup/XtraBackup-2.1.9/source/percona-xtrabackup-2.1.9.tar.gz
tar xvzf percona-xtrabackup-2.1.9.tar.gz
mkdir -p /usr/local/xtrabackup/
mv percona-xtrabackup-2.1.9 /usr/local/xtrabackup/
cd /usr/local/xtrabackup/percona-xtrabackup-2.1.9
AUTO_DOWNLOAD="yes" ./utils/build.sh innodb56
/*****重新安装需要
rm -rf /usr/bin/innobackupex
rm -rf /usr/bin/xtrabackup
***********/
cp innobackupex /usr/bin/
cp src/xtrabackup_56 /usr/bin/
ln -s /usr/local/mysql/bin/* /usr/bin/
---2.安装相关插件
wget http://www.percona.com/downloads/percona-toolkit/LATEST/RPM/percona-toolkit-2.2.8-1.noarch.rpm
yum install perl-DBI
yum install perl-DBD-MySQL
yum install perl-Time-HiRes
yum install perl-IO-Socket-SSL
rpm -ivh percona-toolkit-2.2.8-1.noarch.rpm
*****************************************************************
普通备份和还原
*****************************************************************
----1.备份
create table t1
(
sid int not null ,
sname varchar(100) not null
)engine=innodb charset=gbk ;
DELIMITER //
create PROCEDURE proc1()
BEGIN
DECLARE i int DEFAULT 0;
set i=1 ;
set autocommit=0;
WHILE i
INSERT INTO t1 values(i,'我');
set i=i+1;
END WHILE;
commit;
set autocommit=1;
END
//
DELIMITER ;
call proc1;
---2.备份数据
innobackupex --user=root --password=password --defaults-file=/usr/local/mysql/my.cnf \
--port=3306 /backup
---3.恢复数据
service mysql stop
mv /usr/local/mysql/data/innodb_data/ /wind/
或
cp -rvf innodb_data/ /wind/
----datadir数据目录和日志目录需要为空
rm -rf /usr/local/mysql/innodb_data/*
rm -rf /usr/local/mysql/data/*
rm -rf /usr/local/mysql/mysql_logs/innodb_log/*
----4.准备日志(默认使用内存100M)
innobackupex --ibbackup=xtrabackup_56 --user=root --password=password --defaults-file=/usr/local/mysql/my.cnf \
--apply-log --use-memory=4G /backup/2014-06-06_10-27-47
----5.还原数据库
innobackupex --ibbackup=xtrabackup_56 --defaults-file=/usr/local/mysql/my.cnf --copy-back /backup/2014-06-06_10-27-47
还原前数据文件和事务日志文件包括innodb的日志都需要删除.根据/et/my.cnf来确定MySQL的数据位置
---6.权限设置
chown -R mysql:mysql /usr/local/mysql/
service mysql start
*****************************************************************
增量备份和还原
*****************************************************************
----1.准备数据
create database wind;
use wind;
create table t1
(
sid int not null ,
sname varchar(100) not null
)engine=innodb charset=gbk ;
DELIMITER //
create PROCEDURE proc1()
BEGIN
DECLARE i int DEFAULT 0;
set i=1 ;
set autocommit=0;
WHILE i
INSERT INTO t1 values(i,'我');
set i=i+1;
END WHILE;
commit;
set autocommit=1;
END
//
DELIMITER ;
call proc1;
---2.全备数据
mkdir -p /backup/full
innobackupex --user=root --password=password --defaults-file=/usr/local/mysql/my.cnf \
--port=3306 /backup/full
----3.改变数据
create table t2
(
sid int not null ,
sname varchar(100) not null
)engine=innodb charset=gbk ;
DELIMITER //
create PROCEDURE proc2()
BEGIN
DECLARE i int DEFAULT 0;
set i=1 ;
set autocommit=0;
WHILE i
INSERT INTO t2 values(i,'今天是个好日子');
set i=i+1;
END WHILE;
commit;
set autocommit=1;
END
//
DELIMITER ;
call proc2;
----4.增量备份
mkdir -p /backup/incre
innobackupex --use-memory=4G --user=root --password=password --defaults-file=/usr/local/mysql/my.cnf \
--port=3306 --incremental /backup/incre --incremental-basedir=/backup/full/2014-06-06_12-26-10
---3.恢复数据
service mysql stop
mv /usr/local/mysql/data/innodb_data/ /wind/
或
cp -rvf innodb_data/ /wind/
----datadir数据目录和日志目录需要为空
rm -rf /usr/local/mysql/innodb_data/*
rm -rf /usr/local/mysql/data/*
rm -rf /usr/local/mysql/mysql_logs/innodb_log/*
----4.准备日志(默认使用内存100M)
---4.1 Prepare完整备份集
/*语法: innobackupex --apply-log --redo-only BASE-DIR */
innobackupex --ibbackup=xtrabackup_56 --user=root --password=password --defaults-file=/usr/local/mysql/my.cnf \
--apply-log --redo-only /backup/full/2014-06-06_12-26-10 --use-memory=4G
---4.2 Prepare增量备份集
/*语法:innobackupex --apply-log --redo-only BASE-DIR --incremental-dir= */
innobackupex --ibbackup=xtrabackup_56 --user=root --password=password --defaults-file=/usr/local/mysql/my.cnf \
--apply-log --redo-only /backup/full/2014-06-06_12-26-10 --incremental-dir=/backup/incre/2014-06-06_12-38-16 \
--use-memory=4G
---4.3再次prepare全备集,回滚那些未提交的事务
/*语法: innobackupex --apply-log BASE-DIR */
innobackupex --ibbackup=xtrabackup_56 --user=root --password=password --defaults-file=/usr/local/mysql/my.cnf \
--apply-log /backup/full/2014-06-06_12-26-10 --use-memory=4G
----5.还原数据库
innobackupex --ibbackup=xtrabackup_56 --defaults-file=/usr/local/mysql/my.cnf \
--copy-back /backup/full/2014-06-06_12-26-10
还原前数据文件和事务日志文件包括innodb的日志都需要删除.根据/et/my.cnf来确定MySQL的数据位置
---6.权限设置
chown -R mysql:mysql /usr/local/mysql/
---7.启动mysql
service mysql start

InnoDBBufferPool reduces disk I/O by caching data and indexing pages, improving database performance. Its working principle includes: 1. Data reading: Read data from BufferPool; 2. Data writing: After modifying the data, write to BufferPool and refresh it to disk regularly; 3. Cache management: Use the LRU algorithm to manage cache pages; 4. Reading mechanism: Load adjacent data pages in advance. By sizing the BufferPool and using multiple instances, database performance can be optimized.

Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

MySQL is worth learning because it is a powerful open source database management system suitable for data storage, management and analysis. 1) MySQL is a relational database that uses SQL to operate data and is suitable for structured data management. 2) The SQL language is the key to interacting with MySQL and supports CRUD operations. 3) The working principle of MySQL includes client/server architecture, storage engine and query optimizer. 4) Basic usage includes creating databases and tables, and advanced usage involves joining tables using JOIN. 5) Common errors include syntax errors and permission issues, and debugging skills include checking syntax and using EXPLAIN commands. 6) Performance optimization involves the use of indexes, optimization of SQL statements and regular maintenance of databases.

MySQL is suitable for beginners to learn database skills. 1. Install MySQL server and client tools. 2. Understand basic SQL queries, such as SELECT. 3. Master data operations: create tables, insert, update, and delete data. 4. Learn advanced skills: subquery and window functions. 5. Debugging and optimization: Check syntax, use indexes, avoid SELECT*, and use LIMIT.

MySQL efficiently manages structured data through table structure and SQL query, and implements inter-table relationships through foreign keys. 1. Define the data format and type when creating a table. 2. Use foreign keys to establish relationships between tables. 3. Improve performance through indexing and query optimization. 4. Regularly backup and monitor databases to ensure data security and performance optimization.

MySQL is an open source relational database management system that is widely used in Web development. Its key features include: 1. Supports multiple storage engines, such as InnoDB and MyISAM, suitable for different scenarios; 2. Provides master-slave replication functions to facilitate load balancing and data backup; 3. Improve query efficiency through query optimization and index use.

SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.

The basic operations of MySQL include creating databases, tables, and using SQL to perform CRUD operations on data. 1. Create a database: CREATEDATABASEmy_first_db; 2. Create a table: CREATETABLEbooks(idINTAUTO_INCREMENTPRIMARYKEY, titleVARCHAR(100)NOTNULL, authorVARCHAR(100)NOTNULL, published_yearINT); 3. Insert data: INSERTINTObooks(title, author, published_year)VA


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