前一段时间购买了阿里云的主机.因为自己需要的是用JAVA环境而不是用php+apache这种一键安装的东西,所以没有下载阿里云官网上说的sh.zip.况且里面也没有gzip这个解压包.所以果断自己来安装自己想要的东西 了. 购买的机器配置是: 操作系统:Red Hat Enterprise
前一段时间购买了阿里云的主机.因为自己需要的是用JAVA环境而不是用php+apache这种一键安装的东西,所以没有下载阿里云官网上说的sh.zip.况且里面也没有gzip这个解压包.所以果断自己来安装自己想要的东西 了.
购买的机器配置是:
操作系统:Red Hat Enterprise Linux Server 5.4 64位。
CPU:1核
内存:512M
硬盘空间:20G
带宽:1Mbps。
安装MYSQL数据需要用到以下三个包:
MySQL-server-5.5.32-1.rhel5.x86_64.rpm
MySQL-devel-5.5.32-1.rhel5.x86_64.rpm
MySQL-client-5.5.32-1.rhel5.x86_64.rpm
首先,我们可以通过cd /home 目录下.其次,需要把我们需要的三个包下载下来.
因为这台主机上是有了wget这条命名的,所以我们可以直接通过下面三条命令来把我们需要的三个包下载下来
[root@AY1306231301108721c5Z home]# wget
[root@AY1306231301108721c5Z home]# wget
[root@AY1306231301108721c5Z home]# wget
接着开始安装MYSQL-SERVER
输入命令:
rpm -ivh MySQL-server-5.5.32-1.rhel5.x86_64.rpm
过了一会发现控制台出现如下的提示.
error: Failed dependencies:
libaio.so.1()(64bit) is needed by MySQL-server-5.5.32-1.rhel5.x86_64
libaio.so.1(LIBAIO_0.1)(64bit) is needed by MySQL-server-5.5.32-1.rhel5.x86_64
libaio.so.1(LIBAIO_0.4)(64bit) is needed by MySQL-server-5.5.32-1.rhel5.x86_64
这个是因为这里少了一个里面的库,我试过在网上找了一个下载,然后又出现各种各样的问题.于是直接使用另外一种方式来解决这个问题了
就是通过修改yum来实现新的依赖库下载,输入rpm -qa|grep yum命令.显示结果如下
[root@AY1306231301108721c5Z home]# rpm -qa|grep yum
yum-3.2.22-20.el5
yum-metadata-parser-1.1.2-3.el5
再按照如下步骤把包下载下来
[root@AY1306231301108721c5Z home]# cd /etc/yum
yum/ yum.conf yum.repos.d/
[root@AY1306231301108721c5Z home]# cd /etc/yum
yum/ yum.conf yum.repos.d/
[root@AY1306231301108721c5Z home]# cd /etc/yum.repos.d/
[root@AY1306231301108721c5Z yum.repos.d]# ls
epel.repo epel-testing.repo rhel-debuginfo.repo
[root@AY1306231301108721c5Z yum.repos.d]# wget
完成这个CentOS-Base.repo的下载后.输入yum makecache
此时会出现一大堆信息,在此期间一直输入yes操作就可以了.呵呵,看下面的结果
Installed:
libaio.x86_64 0:0.3.106-5
Complete!
这时可以安装上面三个包了,回到home目录先.
[root@AY1306231301108721c5Z yum.repos.d]# cd /home/
[root@AY1306231301108721c5Z home]# ls
glibc-2.16.0-8.ram1.x86_64.rpm MySQL-client-5.5.32-1.rhel5.x86_64.rpm perl-DBD-MySQL-4.022-1.el5.rfx.x86_64.rpm
libaio-0.3.105-2.x86_64.rpm MySQL-devel-5.5.32-1.rhel5.x86_64.rpm perl-DBI-1.52-1.fc6.i386.rpm
libaio-0.3.107-10.el6.x86_64.rpm MySQL-server-5.5.32-1.rhel5.x86_64.rpm rpm-4.9.1.3-6.fc17.i686.rpm
[root@AY1306231301108721c5Z home]# rpm -ivh MySQL-server-5.5.32-1.rhel5.x86_64.rpm
这里已经装上mysql-server了
继续安装其他的两个包.如下面.
[root@AY1306231301108721c5Z yum.repos.d]# cd /home/
[root@AY1306231301108721c5Z home]# ls
glibc-2.16.0-8.ram1.x86_64.rpm MySQL-client-5.5.32-1.rhel5.x86_64.rpm perl-DBD-MySQL-4.022-1.el5.rfx.x86_64.rpm
libaio-0.3.105-2.x86_64.rpm MySQL-devel-5.5.32-1.rhel5.x86_64.rpm perl-DBI-1.52-1.fc6.i386.rpm
libaio-0.3.107-10.el6.x86_64.rpm MySQL-server-5.5.32-1.rhel5.x86_64.rpm rpm-4.9.1.3-6.fc17.i686.rpm
[root@AY1306231301108721c5Z home]# rpm -ivh MySQL-server-5.5.32-1.rhel5.x86_64.rpm
此时装完三个包,可以启动MYSQL了
[root@AY1306231301108721c5Z home]# service mysql start
进入MYSQL管理
[root@AY1306231301108721c5Z home]# mysql -u root
此时因为没有设置密码,所以为空的
按回车就行了
然后进入后开始设置密码了
SET PASSWORD = PASSWORD('hello');
注意:上面的hello就是密码了
算是完成了.其余的自己再找资料了

MySQL's position in databases and programming is very important. It is an open source relational database management system that is widely used in various application scenarios. 1) MySQL provides efficient data storage, organization and retrieval functions, supporting Web, mobile and enterprise-level systems. 2) It uses a client-server architecture, supports multiple storage engines and index optimization. 3) Basic usages include creating tables and inserting data, and advanced usages involve multi-table JOINs and complex queries. 4) Frequently asked questions such as SQL syntax errors and performance issues can be debugged through the EXPLAIN command and slow query log. 5) Performance optimization methods include rational use of indexes, optimized query and use of caches. Best practices include using transactions and PreparedStatemen

MySQL is suitable for small and large enterprises. 1) Small businesses can use MySQL for basic data management, such as storing customer information. 2) Large enterprises can use MySQL to process massive data and complex business logic to optimize query performance and transaction processing.

InnoDB effectively prevents phantom reading through Next-KeyLocking mechanism. 1) Next-KeyLocking combines row lock and gap lock to lock records and their gaps to prevent new records from being inserted. 2) In practical applications, by optimizing query and adjusting isolation levels, lock competition can be reduced and concurrency performance can be improved.

MySQL is not a programming language, but its query language SQL has the characteristics of a programming language: 1. SQL supports conditional judgment, loops and variable operations; 2. Through stored procedures, triggers and functions, users can perform complex logical operations in the database.

MySQL is an open source relational database management system, mainly used to store and retrieve data quickly and reliably. Its working principle includes client requests, query resolution, execution of queries and return results. Examples of usage include creating tables, inserting and querying data, and advanced features such as JOIN operations. Common errors involve SQL syntax, data types, and permissions, and optimization suggestions include the use of indexes, optimized queries, and partitioning of tables.

MySQL is an open source relational database management system suitable for data storage, management, query and security. 1. It supports a variety of operating systems and is widely used in Web applications and other fields. 2. Through the client-server architecture and different storage engines, MySQL processes data efficiently. 3. Basic usage includes creating databases and tables, inserting, querying and updating data. 4. Advanced usage involves complex queries and stored procedures. 5. Common errors can be debugged through the EXPLAIN statement. 6. Performance optimization includes the rational use of indexes and optimized query statements.

MySQL is chosen for its performance, reliability, ease of use, and community support. 1.MySQL provides efficient data storage and retrieval functions, supporting multiple data types and advanced query operations. 2. Adopt client-server architecture and multiple storage engines to support transaction and query optimization. 3. Easy to use, supports a variety of operating systems and programming languages. 4. Have strong community support and provide rich resources and solutions.

InnoDB's lock mechanisms include shared locks, exclusive locks, intention locks, record locks, gap locks and next key locks. 1. Shared lock allows transactions to read data without preventing other transactions from reading. 2. Exclusive lock prevents other transactions from reading and modifying data. 3. Intention lock optimizes lock efficiency. 4. Record lock lock index record. 5. Gap lock locks index recording gap. 6. The next key lock is a combination of record lock and gap lock to ensure data consistency.


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