Ubuntu 18.04 安装mysql5.7

ubuntu18.04安装mysql5.7，供大家参考，具体内容如下

1.1安装

首先执行下面三条命令：

# 安装mysql服务
sudo apt-get install mysql-server
# 安装客户端
sudo apt install mysql-client
# 安装依赖
sudo apt install libmysqlclient-dev
# 检查状态
sudo netstat -tap | grep mysql

1.2设置root密码

mysql5.7安装完成后普通用户不能进mysql，原因：root的plugin被修改成了auth_socket，用密码登陆的plugin应该是mysql_native_password，直接用root权限登录就不用密码,修改root密码和登录验证方式：

$ sudo su
# mysql
mysql>
mysql> select user, plugin from mysql.user;
+------------------+-----------------------+
| user | plugin |
+------------------+-----------------------+
| root | auth_socket |
| mysql.session | mysql_native_password |
| mysql.sys | mysql_native_password |
| debian-sys-maint | mysql_native_password |
+------------------+-----------------------+
4 rows in set (0.00 sec)
mysql> update mysql.user set authentication_string=password('123456'), plugin='mysql_native_password' where user='root';
mysql> flush privileges;
mysql> exit
bye
# exit
$ sudo /etc/init.d/mysql restart
$ mysql -uroot -p

enter password: 
welcome to the mysql monitor. commands end with ; or \g.
your mysql connection id is 2
server version: 5.7.22-0ubuntu18.04.1 (ubuntu)

copyright (c) 2000, 2018, oracle and/or its affiliates. all rights reserved.

oracle is a registered trademark of oracle corporation and/or its
affiliates. other names may be trademarks of their respective
owners.

type 'help;' or '\h' for help. type '\c' to clear the current input statement.

mysql>

1.3配置mysql远程登录

# 修改配置文件，注释掉bind-address = 127.0.0.1
$ sudo vi /etc/mysql/mysql.conf.d/mysqld.cnf

# 保存退出，然后进入mysql服务，执行授权命令：
$ mysql -uroot -p

mysql> grant all on *.* to root@'%' identified by '123456' with grant option;
query ok, 0 rows affected, 1 warning (0.00 sec)

mysql> flush privileges;
query ok, 0 rows affected (0.00 sec)

mysql> exit
bye
$ sudo /etc/init.d/mysql restart

精彩专题分享：

mysql不同版本安装教程

mysql5.7各版本安装教程

mysql5.6各版本安装教程

mysql8.0各版本安装教程

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