################################## 安装数据库
yum -y install mariadb mariadb-server systemctl start mariadb systemctl enable mariadb
################################## 设置数据库root密码 mysql_secure_installation
首先是设置密码，会提示先输入密码 Enter current password for root (enter for none):<–初次运行直接回车 Set root password? [Y/n] <– 是否设置root用户密码，输入y并回车或直接回车 New password: <– 注入root用户的密码root@123 Re-enter new password: <– 再输入一次你设置的密码root@123 Remove anonymous users? [Y/n] <– 是否删除匿名用户，回车 Disallow root login remotely? [Y/n] <–是否禁止root远程登录,回车, Remove test database and access to it? [Y/n] <– 是否删除test数据库，回车 Reload privilege tables now? [Y/n] <– 是否重新加载权限表，回车 初始化MariaDB完成，接下来测试登录 mysql -uroot -proot@123
################################## 配置MariaDB的字符集
文件/etc/my.cnf vi /etc/my.cnf 在[mysqld]标签下添加 init_connect='SET collation_connection = utf8_unicode_ci' init_connect='SET NAMES utf8' character-set-server=utf8 collation-server=utf8_unicode_ci skip-character-set-client-handshake 文件/etc/my.cnf.d/client.cnf vi /etc/my.cnf.d/client.cnf 在[client]中添加 default-character-set=utf8 文件/etc/my.cnf.d/mysql-clients.cnf vi /etc/my.cnf.d/mysql-clients.cnf 在[mysql]中添加 default-character-set=utf8 全部配置完成，重启mariadb systemctl restart mariadb 之后进入MariaDB查看字符集 mysql> show variables like "%character%";show variables like "%collation%"; 显示为
+--------------------------+----------------------------+ | Variable_name | Value | +--------------------------+----------------------------+ | character_set_client | utf8 | | character_set_connection | utf8 | | character_set_database | utf8 | | character_set_filesystem | binary | | character_set_results | utf8 | | character_set_server | utf8 | | character_set_system | utf8 | | character_sets_dir | /usr/share/mysql/charsets/ | +--------------------------+----------------------------+ 8 rows in set (0.00 sec) +----------------------+-----------------+ | Variable_name | Value | +----------------------+-----------------+ | collation_connection | utf8_unicode_ci | | collation_database | utf8_unicode_ci | | collation_server | utf8_unicode_ci | +----------------------+-----------------+ 3 rows in set (0.00 sec) 字符集配置完成。
################################## 把#改成，51cto有bug不显示**
添加用户，设置权限 创建用户命令 mysql>create database mydb; mysql>create user test@localhost identified by 'test'; 直接创建用户并授权的命令 mysql>GRANT ALL PRIVILEGES ON mydb.#TO 'test'@'localhost' IDENTIFIED BY 'test'; 授予外网登陆权限 mysql>GRANT ALL PRIVILEGES ON mydb.#TO 'test'@'%' IDENTIFIED BY 'test';
################################## 查看mariadb版本
[root@docker dummy-host2.example.com]# rpm -aq |grep mariadb mariadb-5.5.56-2.el7.x86_64 mariadb-server-5.5.56-2.el7.x86_64 mariadb-libs-5.5.56-2.el7.x86_64
################################## 查看数据库文件
MariaDB [(none)]> show global variables like "%datadir%"; +---------------+-----------------+ | Variable_name | Value | +---------------+-----------------+ | datadir | /var/lib/mysql/ | +---------------+-----------------+
################################## 其他命令
mysql查看版本 mysql>select version();
mysql查看用户 mysql>select user();
mysql删除数据库test mysql>drop database test；
备份数据库命令 mysqldump -uroot -proot@123 mydb >/tmp/mydb.sql
还原数据库命令 mysql查看版本 mysql>select version();
mysql查看用户 mysql>select user();
mysql删除数据库test mysql>drop database test；
备份数据库命令 mysql -u root -proot@123 mydb < /tmp/mydb.sql
