linux本地安装MySQL

本地下载：

wget https://cdn.mysql.com/archives/mysql-8.0/mysql-8.0.28-el7-x86_64.tar.gz

解压：
tar

创建用户组及用户
groupadd mysql
useradd -g mysql mysql

授权用户
chown -R mysql.mysql /usr/local/mysql

vim /etc/my.cnf

[mysqld]
user=root
datadir=/usr/local/mysql/data
basedir=/usr/local/mysql
port=3306
max_connections=200
max_connect_errors=10
character-set-server=utf8
default-storage-engine=INNODB
default_authentication_plugin=mysql_native_password
lower_case_table_names=1
group_concat_max_len=102400
[mysql]
default-character-set=utf8
[client]
port=3306
default-character-set=utf8

注:linux上MySQL区分大小写需配置lower_case_table_names=1
如以启动在配置需要重新初始化数据库，所以安装时务必要配置此选项

到mysql/bin目录下执行初始化

./mysqld --initialize

MySQL目录执行，添加并授权服务

cp -a ./support-files/mysql.server /etc/init.d/mysql
chmod +x /etc/init.d/mysql
chkconfig --add mysql

启动：

service mysql start

ln -s /usr/local/mysql/bin/mysql /usr/bin

查看密码：

grep "A temporary password is generated for root@localhost" /var/log/mysqld.log

登录MySQL

mysql -uroot -p

更改root用户密码

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123456';

flush privileges;
use mysql;
update user set host='%' where user = 'root';
flush privileges;