Mysql的基礎使用之MariaDB安裝方法詳解_MySQL

我首次用mysql是在ubuntu上，現在用的是linux 中的Red Hat 分支的centOS 7 ，安裝時發現通常用的都是MariaDB 來代替mysql，透過資料查詢發現Mariadb是mysql的其中的一種分支，由mysql的創始人帶領的團隊所開發的mysql分支的一種版本，因為mysql受到被Oracle收購後的日漸封閉與緩慢的更新，眾多Linux發行版逐漸拋棄了這個人氣開源數據庫，使MySQL在各大Linux發行版中的失勢由於不滿MySQL被Oracle收購後的日漸封閉與緩慢的更新，眾多Linux發行版逐漸拋棄了這個人氣開源數據庫，而轉向了MariaDB，雖然PostgreSQL一直被當作MySQL的直接競爭對手，然而真正給予其致命一擊的似乎更像是MariaDB，而以後給Mysql致命一擊的也將是MariaDB。

言歸正傳，我們來具體講講MariaDB ，其實MariaDb的操作與Mysql的操作基本上一樣，只是基於Mysql進行了性能的提升，目前MariaDB的更新速度已經遠遠超越了Oracle團隊的速度，畢竟是Mysql創始人帶領的團隊，怎麼不讓人放心。

MariaDb的安裝

linux下 通過

yum install mariadb mariadb-server #询问是否要安装，输入Y即可自动安装

mariaDBde 服務的基本指令

[root@127 ~]# systemctl start mariadb.service #启动MariaDB
[root@127 ~]# systemctl stop mariadb.service #停止MariaDB
[root@127 ~]# systemctl restart mariadb.service #重启MariaDB
[root@127 ~]# systemctl enable mariadb.service #设置开机自动启动 [root@127 ~]# systemctl disenable mariadb.service #设置开机自启关闭

初始化root密碼

[root@127 ~]# mysql_secure_installation #为初始化账户root添加密码
NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB
SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!
In order to log into MariaDB to secure it, we'll need the current
password for the root user. If you've just installed MariaDB, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.
Enter current password for root (enter for none):这里填写root密码，如果是第一次初始化密码为空直接敲回车（回车前）

Enter current password for root (enter for none):这里填写root密码，如果是第一次初始化密码为空直接敲回车 （回车后↓）
OK, successfully used password, moving on...
Setting the root password ensures that nobody can log into the MariaDB
root user without the proper authorisation.
You already have a root password set, so you can safely answer 'n'.
Change the root password? [Y/n] y
New password: 这里填写新的密码
Re-enter new password: 这里填写重复的密码
Password updated successfully!
Reloading privilege tables..
... Success!

By default, a MariaDB installation has an anonymous user, allowing anyone
to log into MariaDB without having to have a user account created for
them. This is intended only for testing, and to make the installation
go a bit smoother. You should remove them before moving into a
production environment.
Remove anonymous users? [Y/n] y
... Success!
Normally, root should only be allowed to connect from 'localhost'. This
ensures that someone cannot guess at the root password from the network.
Disallow root login remotely? [Y/n] y
... Success!
By default, MariaDB comes with a database named 'test' that anyone can
access. This is also intended only for testing, and should be removed
before moving into a production environment.
Remove test database and access to it? [Y/n] y
- Dropping test database...
ERROR 1008 (HY000) at line 1: Can't drop database 'test'; database doesn't exist
... Failed! Not critical, keep moving...
- Removing privileges on test database...
... Success!
Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.
Reload privilege tables now? [Y/n] y
... Success!
Cleaning up...
All done! If you've completed all of the above steps, your MariaDB
installation should now be secure.
Thanks for using MariaDB!# 这里表示修改密码成功

資料庫登入

[root@127 ~]# mysql -uroot -proot 　　　　　　　#　mysql -u这里是填写的用户名（默认为root） &我是空格& -p这里填写的是密码（默认为空）

 这表示已经进入MariaDBWelcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 23
Server version: 5.5.50-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.
# 通过/h可以查看很多命令
MariaDB [(none)]> 这里是输入sql语句的入口

以上是MariaDB的安裝

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