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linux 云主机安装mysql_在阿里云Linux服务器上安装MySQL

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申请阿里云Linux服务器

昨天在阿里云申请了一个免费试用5天的Linux云服务器。

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。

今天在一台云服务器上对核心组件进行了配置,包括 JDK、Tomcat 和 MySQL。本文重点讲述了在阿里云 Linux 服务器上安装 MySQL 的详细步骤,并对过程中遇到的问题进行了详细记录。

下载MySQL服务器和客户端

访问MySQL官方网站,并前往其下载页面(http://dev.mysql.com/downloads/mysql/#downloads)。然后下载MySQL Community Server版本,在‘Select Platform’选项卡下拉列表中选择 Oracle以及Red Hat Linux版本4和5。

因为是64位的操作系统,所以选择下载如下rpm包:

(1)MySQL-server-5.6.10-1.rhel5.x86_64.rpm:MySQL服务器;

(2)MySQL-client-5.6.10-1.rhel5.x86_64.rpm:MySQL客户端;

(3)MySQL-devel-5.6.10-1.rhel5.x86_64.rpm:Mysql开发依赖包。

将这些rpm包利用FTP传输至Linux服务器中的一个特定的存储位置

也可在Linux服务器上通过wget命令取得这些rpm包,Linux命令如下:

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使用curl命令通过选项–c下载MySQL服务器rpm包到本地路径DOWNLOADS目录中:`curl –c –o "DOWNLOADS/MySQL-server-5.6.10-1.rhel5.x86_64.rpm"` --from "https://cdn.mysql.com"

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使用wget工具以内容编码方式下载指定rpm文件

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使用get命令获取指定文件包:get –c mysql/devel/mysql-version来自http://cdn.mysql.co

安装MySQL服务器和客户端

安装MySQL服务器

下载完成后使用如下命令开始安装MySQL服务器:

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rpm -ivh MySQL-server-5.6.10-1.rhel5.x86_64.rpm

安装依赖包libaio

在启动MySQL服务器的第一条安装步骤时会报错依赖包libaio.so.1缺失。

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error: Failed dependencies:

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libaio.so.1()(64bit) is needed by MySQL-server-5.6.10-1.rhel5.x86_64

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libaio.so.1(LIBAIO_0.1)(64bit) is needed by MySQL-server-5.6.10-1.rhel5.x86_64

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libaio.so.1(LIBAIO_0.4)(64bit) is needed by MySQL-server-5.6.10-1.rhel5.x86_64

需要使用yum命令快速安装依赖包libaio,运行如下命令:

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yum install libaio

在执行该命令时遇到一个问题:在云服务器上无法通过yum快速安装软件。经过查阅相关资料发现,在阿里云环境下安装的是Red Hat5.4的64位系统,默认配置为CentOS 32位的操作系统版本。错误信息如下:

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Setting up Install Process

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No package libaio available.

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Nothing to do

在技术交流中发现一个解决方法是将yum替换为CentOS版本的做法行之有效。详细步骤如下:首先下载对应的安装包;接着利用curl获取正确的源地址;随后将镜像包复制至临时文件夹;最后运用findpeach安装工具完成安装流程。经过测试验证该方法确实能够顺利实现目标效果。

通过rpm命令查看有哪些yum包,然后进行卸载

笔者在云服务器进行的操作如下:

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[root@AY130221101729bc93912 software]# rpm -qa|grep yum

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yum-3.2.22-20.el5

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yum-metadata-parser-1.1.2-3.el5

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[root@AY130221101729bc93912 software]# rpm -e --nodeps yum-3.2.22-20.el5

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warning: /etc/yum.conf saved as /etc/yum.conf.rpmsave

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[root@AY130221101729bc93912 software]# rpm -e --nodeps yum-metadata-parser-1.1.2-3.el5

通过wget命令在163的镜像上下载CentOS的yum包

参考命令如下:

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wget http://mirrors.163.com/centos/5/os/x86_64/CentOS/yum-3.2.22-40.el5.centos.noarch.rpm

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wget http://mirrors.163.com/centos/5/os/x86_64/CentOS/yum-metadata-parser-1.1.2-4.el5.x86_64.rpm

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wget http://mirrors.163.com/centos/5/os/x86_64/CentOS/yum-fastestmirror-1.1.16-21.el5.centos.noarch.rpm

请注意:可能存在一些差异,请大家搜索一下,在镜像站点http://mirrors.163.com/centos/5/os/x86_64/CentOS/中选择 yum-3xxx 开头、yum-metadata 开头以及 yum-fastestmirror 开头的 rpm 包进行下载。

安装yum相关的rpm包

使用如下命令安装在(2)中下载的rpm包:

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rpm -ivh yum-*

下载CentOS-Base.repo

配置一个名为CentOS-Base.repo的包资源配置文件,并将其放置在/etc/yum.repos.d/路径上:

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[root@AY130221101729bc93912 software]# cd /etc/yum.repos.d/

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[root@AY130221101729bc93912 yum.repos.d]# wget http://www.linuxidc.com/files/2011/05/06/CentOS-Base.repo

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--2013-02-22 08:58:27-- http://www.linuxidc.com/files/2011/05/06/CentOS-Base.repo

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Resolving www.linuxidc.com

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60.191.129.94

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Connecting to www.linuxidc.com|60.191.129.94|:80

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connected.

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HTTP request sent, awaiting response

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200 OK

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Length: 1426 (1.4K) [application/octet-stream]

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Saving to: `CentOS-Base.repo'

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100%[==========================================================================================>] 1,426 --.-K/s in 0s

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2013-02-22 08:58:28 (124 MB/s) - `CentOS-Base.repo' saved [1426/1426]

生成缓存文件到/var/cache/yum目录

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[root@AY130221101729bc93912 yum.repos.d]# yum makecache

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Loaded plugins: fastestmirror

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Determining fastest mirrors

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addons | 1.9 kB 00:00

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addons/filelists_db | 568 B 00:00

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addons/other_db

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base

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…… 3641/3641

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base 3641/3641

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Metadata Cache Created

安装依赖包libaio

第(5)步完成后, 此时能够顺利运行yum install libaio命令, 运行结果参考执行情况如下

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[root@AY130221101729bc93912 yum.repos.d]# yum install libaio

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Loaded plugins: fastestmirror

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Loading mirror speeds from cached hostfile

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Setting up Install Process

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Resolving Dependencies

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……

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Complete

安装MySQL Server的rpm包

在完成依赖项安装后即可启动rpm命令以安装MySQL服务器端

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[root@AY130221101729bc93912 software]# rpm -ivh MySQL-server-5.6.10-1.rhel5.x86_64.rpm

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Preparing

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########################################### [100%]

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1:MySQL-server ########################################### [100%]

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2013-02-22 09:03:18 0 [Warning] TIMESTAMP with implicit default values is obsolete. It is imperative to adopt the --explicit_defaults_for_timestamp server parameter (refer to the documentation for comprehensive details).

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…….

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A random root password has been set. You will find it in '/root/.mysql_secret'.

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2013-02-22 09:03:25 4132 [Note] Binlog end

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2013-02-22 09:03:25 4132 [Note] InnoDB: FTS optimize thread exiting.

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……

在安装完成后,系统将为root用户生成一个随机密码。建议您参考以下命令获取详细信息:cat /root/.mysql_secret及其类似指令。

安装MySQL客户端

服务端安装完成后,使用如下命令安装MySQL客户端,命令如下:

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rpm -ivh MySQL-client-5.5.28-1.rhel5.i386.rpm

安装MySQL开发依赖包

接着安装MySQL-devel-5.5.28-1.rhel5.i386.rpm,命令如下:

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rpm -ivh MySQL-devel-5.5.28-1.rhel5.i386.rpm

MySQL的几个重要目录

(1)数据库目录

/var/lib/mysql/

(2)配置文件

/usr/share/mysql(mysql.server命令及配置文件)

(3)相关命令

/usr/bin(mysqladmin mysqldump等命令)

(4)启动脚本

/etc/rc.d/init.d/(启动脚本文件mysql的目录)

欲了解MySQL安装的位置,请通过执行以下命令来确定

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[root@AY130221101729bc93912 mysql]# whereis mysql

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MySQL应用程序:包括位于/usr/bin目录中的MySQL二进制程序、位于/usr/include目录中的MySQL包含文件、位于/usr/share目录中的MySQL共享目录以及位于/usr/share/man/man1目录中的gz格式MySQL手册卷一

启动MySQL

安装完成后mysql是没有启动的,运行mysql命令会提示如下错误:

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[root@AY130221101729bc93912 software]# mysql

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ERROR 2002 (HY000): 无法连接到本地MySQL服务器 instance 通过指定的socket '/var/lib/mysql/mysql.sock'(第2次尝试)

可使用如下命令启动MySQL:

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service mysql start

或者使用如下命令:

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/etc/init.d/mysql start

登录MySQL

通过mysql命令行工具登录到MySQL服务器,在执行MySQL命令时通常会要求输入root用户的密码。

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[root@AY130221101729bc93912 mysql]# mysql -u root -p

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Enter password:

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Welcome to the MySQL monitor. Commands end with ; or \g.

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Your MySQL connection id is 5

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Server version: 5.6.10

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Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

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Oracle is a registered trademark of Oracle Corporation and/or its

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affiliates. Other names may be trademarks of their respective

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owners.

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Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

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mysql> show databases;

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ERROR 1820 (HY000): You must SET PASSWORD before executing this statement

可使用SET PASSWORD命令修改root用户的密码,参考如下:

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mysql> SET PASSWORD = PASSWORD('root123456');

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Query OK, 0 rows affected (0.00 sec)

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mysql> show databases;

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+--------------------+

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| Database |

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+--------------------+

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| information_schema |

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| mysql |

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| performance_schema |

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| test |

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+--------------------+

设置开机自启动

多种开机自启动的方法可用,并通过chkconfig命令进行配置。此外,在/etc/rc.local文件中可增添MySQL启动指令作为Illustated example。

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/etc/init.d/mysql start

设置完成后重启系统,使用natstat –nat命令可看到MySQL的3306端口:

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netstat -nat

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Active Internet connections (servers and established)

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Proto Recv-Q Send-Q Local Address Foreign Address State

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tcp 0 0 127.0.0.1:8005 0.0.0.0:* LISTEN

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tcp 0 0 0.0.0.0:8009 0.0.0.0:* LISTEN

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tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN

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……

参考文档

http://www.2cto.com/os/201112/113105.html

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