ubuntu 18 安装 mariadb 10.1以上版本

By | 2019年8月5日

安装
下载安装
sudo apt install mariadb-server
链接、测试
sudo mysql -u root -p
安装数据库实例
sudo mysql_secure_installation
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): 设置root的密码
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] n 是否改变密码:n不改变
… skipping.
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 是否移除测试用户:y是的
… 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] 是否允许root远程登录:y不允许
… 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] 删掉测试数据库test: y删掉
-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 重新加载权限表:y重新加载
… 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

启动&重启关闭
查看状态
sudo systemctl status mysql
启动
sudo systemctl start mysql
重启
sudo systemctl restart mysql
关闭
sudo systemctl stop mysql
配置
登录
sudo mysql -u root -p #输入root 用户密码

创建远程登录用户 ,
格式:create user ‘用户名’@’%’ identified by ‘密码’;
> create user ‘us’@’%’ identified by ‘123’;

授权(如果权限不足)
> GRANT ALL PRIVILEGES ON *.* TO ‘us’@’%’ IDENTIFIED BY ‘123’ WITH GRANT OPTION;
> FLUSH PRIVILEGES;
不要开放root 远程登录权限

查看监听
netstat -an | grep 3306

tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN
如果显示 监听端口 是127.0.0.1:3306 那么其他计算机无法连接

修改配置
vi /etc/mysql/mariadb.conf.d/50-server.cnf#修改结束记得用重启指令重启mysql服务
Instead of skip-networking the default is now to listen only on
localhost which is more compatible and is not less secure.
bind-address = 127.0.0.1 #注释掉这一行

重启后显示
tcp6 0 0 :::3306 ::😗 LISTEN
此时就可以远程访问mariadb了

远程访问
直接登录
mysql -h localhost -u us -p 123 #输入us 用户密码123
用客户端工具登录
sqlyog navicat hs
异常处理
Access denied for user ‘root’@‘localhost’
$ sudo systemctl stop mariadb # 停止服务
$ sudo mysqld_safe –skip-grant-tables & # 进入安全模式,并设置为后台进程
$ mysql -u root   # 登陆mysql

select Host,User,plugin from mysql.user where User=’root’; # 查询用户
> update mysql.user set plugin=’mysql_native_password’; #重置加密模式
> update mysql.user set password=PASSWORD(“newpassword”) where User=’root’; #重置密码
> flush privileges; #刷新权限信息
> exit

$ sudo kill -9 $(pgrep mysql) # 杀掉进程

一定要确保杀掉进程。
$ sudo service mariadb start # 重新启动服务
$ mysql -u root -p #登陆mysql, 安装unix_soket
$ install plugin unix_socket soname ‘auth_socket’;

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