linux安裝mysql

1.安裝 Mysql Server

# yum install mysql
#yum install mysql-server

2.開啓 MySQL server 及開機啓動 MySQL

# systemctl start mysqld.service 
# systemctl enable mysqld.service
ln -sf '/usr/lib/systemd/system/mysqld.service' '/etc/systemd/system/multi-user.target.wants/mysqld.service'


3.MySQL Secure Installation

# /usr/bin/mysql_secure_installation

通過操作將進行以下各項過程設置基本的配置

    Set (Change) root password
    Remove anonymous users
    Disallow root login remotely
    Remove test database and access to it
    Reload privilege tables output:

#/usr/bin/mysql_secure_installation
（$sudo /usr/bin/mysql_secure_installation 普通用戶 ）
password for root:



NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
      SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!


In order to log into MySQL to secure it, we'll need the current
password for the root user.  If you've just installed MySQL, 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):
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MySQL
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] n
 ... skipping.

By default, a MySQL installation has an anonymous user, allowing anyone
to log into MySQL 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, MySQL 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...
 ... Success!
 - 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 MySQL
installation should now be secure.

Thanks for using MySQL!

【對於本地測試環境直接可以使用以下命令來初始化root密碼：

# mysqladmin -u root password [your_password_here]
普通用戶執行以上步驟】

4.本地連接 Mysql

#mysql -u root -p
#mysql -h localhost -u root -p

5.創建數據庫，創建新用戶及授予權限

## 創建數據庫 flaskr ##
mysql> create database flaskr;(以；或\g結束命令，僅僅按下Enter是不執行命令的)
 
## 創建用戶 flaskr_user ##
mysql> create user 'flaskr_user'@'192.168.1.102' identifiled by 'passwordxxx';
 
## 授予權限 ##
mysql> grant all on flaskr.* to 'flaskr_user'@'192.168.1.102';
 
##  flush privileges, reload the grant tables  ##
mysql> flush privileges;