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HomeDatabaseMysql TutorialCentOS6.4下Mysql数据库的安装与配置,导入数据库,授权远程ip_MySQL

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卸载掉原有mysql

因为mysql数据库在Linux上实在是太流行了,所以目前下载的主流Linux系统版本基本上都集成了mysql数据库在里面,我们可以通过如下命令来查看我们的操作系统上是否已经安装了mysql数据库

[root@xiaoluo ~]# rpm -qa | grep mysql  // 这个命令就会查看该操作系统上是否已经安装了mysql数据库

有的话,我们就通过 rpm -e 命令 或者 rpm -e --nodeps 命令来卸载掉

[root@xiaoluo ~]# rpm -e mysql  // 普通删除模式[root@xiaoluo ~]# rpm -e --nodeps mysql  // 强力删除模式,如果使用上面命令删除时,提示有依赖的其它文件,则用该命令可以对其进行强力删除

在删除完以后我们可以通过 rpm -qa | grep mysql 命令来查看mysql是否已经卸载成功!!

通过yum来进行mysql的安装

我是通过yum的方式来进行mysql的数据库安装,首先我们可以输入 yum list | grep mysql 命令来查看yum上提供的mysql数据库可下载的版本:

[root@xiaoluo ~]# yum list | grep mysql

然后我们可以通过输入yum install -y mysql-server mysql mysql-devel命令将mysql mysql-server mysql-devel都安装好(注意:安装mysql时我们并不是安装了mysql客户端就相当于安装好了mysql数据库了,我们还需要安装mysql-server服务端才行)

注释:mysql-deve用于c语言开发接口,可以不安装

[root@xiaoluo ~]# yum install -y mysql-server mysql mysql-deve
<strong>mysql数据库的初始化及相关配置</strong>

我们在安装完mysql数据库以后,会发现会多出一个mysqld的服务,这个就是咱们的数据库服务,我们通过输入service mysqld start命令就可以启动我们的mysql服务。

注意:如果我们是第一次启动mysql服务,mysql服务器首先会进行初始化的配置,如:

[root@xiaoluo ~]# <strong>service mysqld start</strong>[root@xiaoluo ~]# <strong>service mysqld restart</strong>

我们在使用mysql数据库时,都得首先启动mysqld服务,我们可以 通过chkconfig --list | grep mysqld命令来查看mysql服务是不是开机自动启动,如:

[root@xiaoluo ~]# chkconfig --list | grep mysqldmysqld 0:关闭1:关闭2:关闭3:关闭4:关闭5:关闭6:关闭

我们发现mysqld服务并没有开机自动启动,我们当然可以通过chkconfig mysqld on命令来将其设置成开机启动,这样就不用每次都去手动启动了

[root@xiaoluo ~]# chkconfig mysqld on[root@xiaoluo ~]# chkconfig --list | grep mysqlmysqld 0:关闭1:关闭2:启用3:启用4:启用5:启用6:关闭

mysql数据库安装完以后只会有一个root管理员账号,但是此时的root账号还并没有为其设置密码,在第一次启动mysql服务时,会进行数据库的一些初始化工作,在输出的一大串信息中,我们看到有这样一行信息 :

/usr/bin/mysqladmin -u root password 'new-password'  // 为root账号设置密码

所以我们可以通过 该命令来给我们的root账号设置密码(注意:这个root账号是mysql的root账号,非Linux的root账号)

[root@xiaoluo ~]# <strong>mysqladmin -u root password</strong> 'root'  // 通过该命令给root账号设置密码为 root

此时我们就可以通过mysql -u root -p命令来登录我们的mysql数据库了

五、mysql数据库的主要配置文件

1./etc/my.cnf这是mysql的主配置文件

我们可以查看一下这个文件的一些信息

[root@xiaoluo etc]# ls my.cnf my.cnf[root@xiaoluo etc]# cat my.cnf [mysqld]datadir=/var/lib/mysqlsocket=/var/lib/mysql/mysql.sockuser=mysql# Disabling symbolic-links is recommended to prevent assorted security riskssymbolic-links=0[mysqld_safe]log-error=/var/log/mysqld.logpid-file=/var/run/mysqld/mysqld.pid

2./var/lib/mysqlmysql数据库的数据库文件存放位置

我们的mysql数据库的数据库文件通常是存放在了/ver/lib/mysql这个目录下

[root@xiaoluo ~]# cd /var/lib/mysql/[root@xiaoluo mysql]# ls -l总用量 20488-rw-rw----. 1 mysql mysql 10485760 4月 6 22:01 ibdata1-rw-rw----. 1 mysql mysql5242880 4月 6 22:01 ib_logfile0-rw-rw----. 1 mysql mysql5242880 4月 6 21:59 ib_logfile1drwx------. 2 mysql mysql 4096 4月 6 21:59 mysql  // 这两个是mysql数据库安装时默认的两个数据库文件srwxrwxrwx. 1 mysql mysql0 4月 6 22:01 mysql.sockdrwx------. 2 mysql mysql 4096 4月 6 21:59 test  // 这两个是mysql数据库安装时默认的两个数据库文件

我们可以自己创建一个数据库,来验证一下该数据库文件的存放位置

创建一个我们自己的数据库:mysql> create database xiaoluo;Query OK, 1 row affected (0.00 sec)[root@xiaoluo mysql]# ls -l总用量 20492-rw-rw----. 1 mysql mysql 10485760 4月 6 22:01 ibdata1-rw-rw----. 1 mysql mysql5242880 4月 6 22:01 ib_logfile0-rw-rw----. 1 mysql mysql5242880 4月 6 21:59 ib_logfile1drwx------. 2 mysql mysql 4096 4月 6 21:59 mysqlsrwxrwxrwx. 1 mysql mysql0 4月 6 22:01 mysql.sockdrwx------. 2 mysql mysql 4096 4月 6 21:59 testdrwx------. 2 mysql mysql 4096 4月 6 22:15 xiaoluo  // 这个就是我们刚自己创建的xiaoluo数据库[root@xiaoluo mysql]# cd xiaoluo/[root@xiaoluo xiaoluo]# lsdb.opt

3./var/logmysql数据库的日志输出存放位置

我们的mysql数据库的一些日志输出存放位置都是在/var/log这个目录下

[root@xiaoluo xiaoluo]# cd [root@xiaoluo ~]# cd /var/log[root@xiaoluo log]# lsamandacron maillog-20130331 spice-vdagent.loganaconda.ifcfg.logcron-20130331mcelog spooleranaconda.logcups messages spooler-20130331anaconda.program.logdirsrv messages-20130331sssdanaconda.storage.logdmesg<strong>mysqld.log</strong> tallyloganaconda.syslog dmesg.oldntpstats tomcat6anaconda.xlog dracut.log piranhawpa_supplicant.loganaconda.yum.loggdmpm-powersave.log wtmpaudit httpdpppXorg.0.logboot.logibacm.logprelinkXorg.0.log.oldbtmplastlogsa Xorg.1.logbtmp-20130401 libvirtsambaXorg.2.logcluster luci secure Xorg.9.logConsoleKitmaillogsecure-20130331yum.log

导入数据库:

mysql -p登陆,然后source /xx/xx.sql即可

远程ip授权登陆:

mysql> grant all privileges on *.* to'root'@'219.141.190.16'identified by 'hello54987663'

    -> ;

Query OK, 0 rows affected (0.02 sec)

mysql> flush privileges

    -> ;

Query OK, 0 rows affected (0.00 sec)

Statement
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