mysql安装配置方法图文教程(CentOS7)
一、系统环境
[root@localhost home]# cat /etc/redhat-release
centos linux release 7.2.1511 (core)
二、mysql安装
安装mysql和mysql-devel都成功,但是安装mysql-server失败,如下:
[root@localhost home]# yum install mysql-server 已加载插件:fastestmirror, langpacks repodata is over 2 weeks old. install yum-cron? or run: yum makecache fast base | 3.6 kb 00:00:00 extras | 3.4 kb 00:00:00 updates | 3.4 kb 00:00:00 (1/4): base/7/x86_64/group_gz | 155 kb 00:00:01 (2/4): extras/7/x86_64/primary_db | 139 kb 00:00:01 (3/4): base/7/x86_64/primary_db | 5.6 mb 00:00:38 (4/4): updates/7/x86_64/primary_db | 4.7 mb 00:00:39 loading mirror speeds from cached hostfile * base: mirrors.163.com * extras: mirrors.163.com * updates: mirrors.163.com 没有可用软件包 mysql-server。 错误:无须任何处理
出现这样问题是centos 7 版本将mysql数据库软件从默认的程序列表中移除,用mariadb代替了
有两种解决办法:
方法一:安装mariadb
mariadb数据库管理系统是mysql的一个分支,采用gpl授权许可 mariadb的目的是完全兼容mysql,包括api和命令行,使之能轻松成为mysql的代替品。mariadb由mysql的创始人michael widenius(英语:michael widenius)主导开发,他早前将自己创建的公司mysql ab卖给了sun,此后,随着sun被甲骨文收购,mysql的所有权也落入oracle的手中。mariadb名称来自michael widenius的女儿maria的名字。
安装mariadb,输入安装命令
[root@localhost home]# yum install mariadb-server mariadb
mariadb数据库的相关命令是:
systemctl start mariadb #启动mariadb systemctl stop mariadb #停止mariadb systemctl restart mariadb #重启mariadb systemctl enable mariadb #设置开机启动
先启动数据库
[root@yl-web yl]# systemctl start mariadb
默认无密码
[root@localhost lzh]# mysql -u root -p enter password: welcome to the mariadb monitor. commands end with ; or \g. your mariadb connection id is 6 server version: 5.5.52-mariadb mariadb server copyright (c) 2000, 2016, oracle, mariadb corporation ab and others. type 'help;' or '\h' for help. type '\c' to clear the current input statement.
mariadb [(none)]> show databases; +--------------------+ | database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | +--------------------+ 4 rows in set (0.01 sec)
方法二:官网下载安装mysql-server
# wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm # rpm -ivh mysql-community-release-el7-5.noarch.rpm # yum install mysql-community-server
安装成功后重启mysql服务
# service mysqld restart
初次安装mysql,root账户没有密码
[root@localhost lzh]# mysql -u root welcome to the mysql monitor. commands end with ; or \g. your mysql connection id is 3 server version: 5.6.26 mysql community server (gpl) copyright (c) 2000, 2015, oracle and/or its affiliates. all rights reserved. oracle is a registered trademark of oracle corporation and/or its affiliates. other names may be trademarks of their respective owners. type 'help;' or '\h' for help. type '\c' to clear the current input statement. mysql> show databases; +--------------------+ | database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | +--------------------+ 4 rows in set (0.01 sec)
设置密码
mysql> set password for 'root'@'localhost' =password('password'); query ok, 0 rows affected (0.00 sec)
安装完以后mariadb自动就被替换了,将不再生效。
[root@localhost lzh]# rpm -qa |grep mariadb
精彩专题分享:mysql不同版本安装教程 mysql5.7各版本安装教程 mysql5.6各版本安装教程
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