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怎么在Ubuntu18.04環境中安裝MySQL?相信很多沒有經驗的人對此束手無策,為此本文總結了問題出現的原因和解決方法,通過這篇文章希望你能解決這個問題。
安裝
mysql
sudo apt-get --purge remove mysql-server mysql-common mysql-client sudo apt-get install mysql-server mysql-common mysql-client mysqladmin -u root password your-new-password sudo /etc/init.d/mysql restart
mariadb
apt-get install mariadb-server
字符集修改utf8
如果裝的mariadb, 默認字符集已經是utf8了。mysql則不是
mysql> show variables like 'char%'; +--------------------------+----------------------------+ | Variable_name | Value | +--------------------------+----------------------------+ | character_set_client | utf8 | | character_set_connection | utf8 | | character_set_database | latin1 | | character_set_filesystem | binary | | character_set_results | utf8 | | character_set_server | latin1 | | character_set_system | utf8 | | character_sets_dir | /usr/share/mysql/charsets/ | +--------------------------+----------------------------+
mysql> show variables like 'collation%'; +----------------------+-------------------+ | Variable_name | Value | +----------------------+-------------------+ | collation_connection | utf8_general_ci | | collation_database | latin1_swedish_ci | | collation_server | latin1_swedish_ci | +----------------------+-------------------+
修改字符集:
sudo vim /etc/mysql/my.cnf
添加以下內容
[mysqld] collation-server = utf8_unicode_ci init-connect='SET NAMES utf8' character-set-server = utf8
重啟:
service mysql restart
登錄權限問題
Ubuntu18.04 安裝mysql或者mariadb之后,發現普通用戶和遠程都沒有權限連接。
ERROR 1045: Access denied for user: 'root@localhost' (Using
password: YES)
修改了密碼也不對。然后sudo mysql -u root
即可登錄。這顯然不是我們想要的。
解決方案
刪除root,重新創建用戶。
首先,登錄
sudo mysql -u root
然后查看當前用戶
SELECT User,Host FROM mysql.user; +------------------+-----------+ | User | Host | +------------------+-----------+ | admin | localhost | | debian-sys-maint | localhost | | magento_user | localhost | | mysql.sys | localhost | | root | localhost |
刪除root賬號
mysql> DROP USER 'root'@'localhost'; Query OK, 0 rows affected (0,00 sec)
重新創建root:
mysql> CREATE USER 'root'@'%' IDENTIFIED BY '123456'; Query OK, 0 rows affected (0,00 sec)
授權
mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION; Query OK, 0 rows affected (0,00 sec) mysql> FLUSH PRIVILEGES; Query OK, 0 rows affected (0,01 sec)
關于重置密碼
host為%
時允許遠程登錄
SET PASSWORD FOR root@'localhost' = PASSWORD('password');
or
UPDATE mysql.user SET Password=PASSWORD('newpwd') WHERE User='root';
or
USE mysql UPDATE user SET Password = PASSWORD('newpwd') WHERE Host = 'localhost' AND User = 'root';
允許任何地方登錄
USE mysql UPDATE user SET Password = PASSWORD('newpwd') WHERE Host = '%' AND User = 'root';
看完上述內容,你們掌握怎么在Ubuntu18.04環境中安裝MySQL的方法了嗎?如果還想學到更多技能或想了解更多相關內容,歡迎關注億速云行業資訊頻道,感謝各位的閱讀!
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