标签：ice eve img pre web err 维护 命令 字符
yum update升级以后的系统版本为
[root@yl-web yl]# cat /etc/redhat-release CentOS Linux release 7.1.1503 (Core)
一般网上给出的资料都是
#yum install mysql #yum install mysql-server #yum install mysql-devel
安装mysql和mysql-devel都成功，但是安装mysql-server失败，如下：
[root@yl-web yl]# yum install mysql-server Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.sina.cn * extras: mirrors.sina.cn * updates: mirrors.sina.cn No package mysql-server available. Error: Nothing to do
查资料发现是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：
MariaDB数据库管理系统是MySQL的一个分支，主要由开源社区在维护，采用GPL授权许可。开发这个分支的原因之一是：甲骨文公司收购了MySQL后，有将MySQL闭源的潜在风险，因此社区采用分支的方式来避开这个风险。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。
安装mariadb，大小59 M。
[root@yl-web yl]# 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
所以先启动数据库
[root@yl-web yl]# systemctl start mariadb
然后就可以正常使用mysql了
[root@yl-web yl]# mysql -u root -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 3 Server version: 5.5.41-MariaDB MariaDB Server Copyright (c) 2000, 2014, 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 (0.00 sec) MariaDB [(none)]>
安装mariadb后显示的也是 MariaDB [(none)]> ，可能看起来有点不习惯。下面是第二种方法。
# 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@yl-web yl]# 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) mysql>
设置密码
mysql> set password for ‘root‘@‘localhost‘ =password(‘password‘); Query OK, 0 rows affected (0.00 sec) mysql>
不需要重启数据库即可生效。
在mysql安装过程中如下内容：
Installed:
mysql-community-client.x86_64 0:5.6.26-2.el7 mysql-community-devel.x86_64 0:5.6.26-2.el7
mysql-community-libs.x86_64 0:5.6.26-2.el7 mysql-community-server.x86_64 0:5.6.26-2.el7
Dependency Installed:
mysql-community-common.x86_64 0:5.6.26-2.el7
Replaced:
mariadb.x86_64 1:5.5.41-2.el7_0 mariadb-devel.x86_64 1:5.5.41-2.el7_0 mariadb-libs.x86_64 1:5.5.41-2.el7_0
mariadb-server.x86_64 1:5.5.41-2.el7_0
所以安装完以后mariadb自动就被替换了，将不再生效。
[root@yl-web yl]# rpm -qa |grep mariadb [root@yl-web yl]#
mysql配置文件为/etc/my.cnf
最后加上编码配置
[mysql] default-character-set =utf8
这里的字符编码必须和/usr/share/mysql/charsets/Index.xml中一致。
把在所有数据库的所有表的所有权限赋值给位于所有IP地址的root用户。
mysql> grant all privileges on *.* to root@‘%‘identified by ‘password‘;
如果是新用户而不是root，则要先新建用户
mysql>create user ‘username‘@‘%‘ identified by ‘password‘;
此时就可以进行远程连接了。
标签：ice eve img pre web err 维护 命令 字符
原文地址：http://www.cnblogs.com/lgqboke/p/6872690.html
