centos7 安裝和設置mariadb

1、安裝MariaDB

安裝命令

yum -y install mariadb mariadb-server

安裝完成MariaDB，首先啓動MariaDB

systemctl start mariadb

設置開機啓動

systemctl enable mariadb

接下來進行MariaDB的相關簡單配置

mysql_secure_installation

首先是設置密碼，會提示先輸入密碼

Enter current password for root (enter for none):<–初次運行直接回車

設置密碼

Set root password? [Y/n] <– 是否設置root用戶密碼，輸入y並回車或直接回車
New password: <– 設置root用戶的密碼
Re-enter new password: <– 再輸入一次你設置的密碼

其他配置

Remove anonymous users? [Y/n] <– 是否刪除匿名用戶，回車

Disallow root login remotely? [Y/n] <–是否禁止root遠程登錄,回車,

Remove test database and access to it? [Y/n] <– 是否刪除test數據庫，回車

Reload privilege tables now? [Y/n] <– 是否重新加載權限表，回車

初始化MariaDB完成，接下來測試登錄

mysql -uroot -ppassword

完成。

 

2、配置MariaDB的字符集

文件/etc/my.cnf

vi /etc/my.cnf

在[mysqld]標籤下添加

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，重啓mariadb

systemctl restart mariadb

之後進入MariaDB查看字符集

mysql> show variables like "%character%";show variables like "%collation%";

顯示爲

+--------------------------+----------------------------+
| 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。

 

3、添加用戶，設置權限

創建用戶命令

mysql>create user username@localhost identified by 'password';

直接創建用戶並授權的命令

mysql>grant all on *.* to username@localhost indentified by 'password';

授予外網登陸權限 

mysql>grant all privileges on *.* to username@'%' identified by 'password';

授予權限並且可以授權

mysql>grant all privileges on *.* to username@'hostname' identified by 'password' with grant option;

簡單的用戶和權限配置基本就這樣了。

其中只授予部分權限把 其中 all privileges或者all改爲select,insert,update,delete,create,drop,index,alter,grant,references,reload,shutdown,process,file其中一部分。

通過yum安裝mariadb mariadb-server後設置一個初始密碼。

首先啓動mariadb服務，

然後輸入mysql進入mariadb控制檯：

[root@localhost ~]# mysql
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 2
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.

輸入 use mysql;

MariaDB [(none)]> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed

輸入修改密碼的命令：

update user set password=password("這裏替換成你的密碼")where user='root';

MariaDB [mysql]> update user set password=password("yoonching")where user='root';
Query OK, 4 rows affected (0.00 sec)
Rows matched: 4  Changed: 4  Warnings: 0

輸入 flush privileges;

MariaDB [mysql]> flush privileges;
Query OK, 0 rows affected (0.00 sec)

輸入exit退出

MariaDB [mysql]> exit
Bye

測試：在命令行輸入mysql，不帶登錄信息

[root@localhost ~]# mysql
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

無法進入。

再測試：帶登錄信息

root@localhost ~]# mysql -uroot -pyoonching
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 4
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.

密碼設置成功！

轉載於：

Linux公社：http://www.linuxidc.com/Linux/2016-03/128880.htm

YoonChing的博客(http://blog.csdn.net/hyq776141352/article/details/69808662)

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