1.资源下载

https://downloads.mysql.com/archives/community/

链接：https://pan.baidu.com/s/1EiPXo5e1LIvS07-4ivSSwg
提取码：3m7d

2.安装步骤

解压

tar -xvf mysql-8.0.23-linux-glibc2.12-x86_64.tar.xz

删除安装包并重命名

rm -rf mysql-8.0.23-linux-glibc2.12-x86_64.tar.xz

mv mysql-8.0.23-linux-glibc2.12-x86_64 mysql-8.0.23

创建数据存储目录

mkdir data

创建mysql用户组以及用户权限

groupadd mysql
useradd -r -g mysql mysql
chown mysql:mysql -R /usr/local/mysql/

3.配置文件

mysql配置文件说明

vim /etc/my.cnf

初始内容

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid#
# include all files from the config directory
#
!includedir /etc/my.cnf.d

修改后内容

[mysqld]
bind-address=0.0.0.0
port=3306
user=mysqlbasedir=/usr/local/mysql/mysql-8.0.23
datadir=/usr/local/mysql/mysql-8.0.23/data
socket=/tmp/mysql.socklog-error=/usr/local/mysql/mysql-8.0.23/data/mysql.log
pid-file=/usr/local/mysql/mysql-8.0.23/data/mysql.pidcharacter_set_server=utf8mb4
symbolic-links=0
explicit_defaults_for_timestamp=true# include all files from the config directory
!includedir /etc/my.cnf.d

4.启动

初始化

./bin/mysqld --initialize --console

查看初始登录密码

cat data/mysql.log

添加mysql服务

cp /usr/local/mysql/mysql-8.0.23/support-files/mysql.server /etc/init.d/mysql

启动

service mysql start

查看进程

ps -ef | grep mysql

登录客户端

 ./bin/mysql -u root -p

修改登录密码

ALTER USER 'root'@'localhost' IDENTIFIED BY '123456' PASSWORD EXPIRE NEVER;

密码加密，以防navicat客户端工具连接时报2059错误

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

刷新权限

FLUSH PRIVILEGES; 

重新登陆

5.连接

选中mysql数据库

use mysql;

修改root用户可以远程访问登录

UPDATE user SET HOST = '%' WHERE user = 'root';

刷新权限

FLUSH PRIVILEGES;

6.忘记密码后重置密码

关闭服务

service mysql stop

以免密码登录方式启动

./bin/mysqld --skip-grant-tables &

登录客户端，不需要密码，直接回车

./bin/mysql -u root -p

修改密码

use mysql;
FLUSH PRIVILEGES;
select user,host from user;
ALTER USER 'root'@'%' IDENTIFIED BY '1234' PASSWORD EXPIRE NEVER;
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '1234';
FLUSH PRIVILEGES;

相关链接

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