linux安装MySQL--安装包安装-蒲公英云

linux安装MySQL--安装包安装

1.下载MySQL安装包

2.解压

tar -xvf mysql-8.0.20-linux-glibc2.12-x86_64.tar.xz

3.移动/usr/local/下，并重命名

mv mysql-8.0.20-linux-glibc2.12-x86_64 /usr/local/mysql

4.创建mysql用户组和用户，并修改权限

groupadd mysql
useradd -r -g mysql mysql

5.创建数据目录并赋予权限

mkdir -p /usr/local/mysql/data               #创建目录
chown mysql:mysql -R /usr/local/mysql/data   #赋予权限

6.配置my.cnf

vim /etc/mysql/my.cnf

内容

[mysqld]
bind-address=127.0.0.1
port=3306
user=mysql
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
socket=/tmp/mysql.sock
log-error=/usr/local/mysql/data/mysql.err
pid-file=/usr/local/mysql/data/mysql.pid
#character config
character_set_server=utf8mb4
symbolic-links=0
explicit_defaults_for_timestamp=true
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
max_connections=400
innodb_file_per_table=1
#表名大小写不敏感，敏感为
lower_case_table_names=1

7.初始化数据库

切换到mysql的bin目录

cd /usr/local/mysql/bin/

执行初始化

./mysqld --defaults-file=/etc/mysql/my.cnf --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data --user=mysql --initialize

8.查看密码

cat /usr/local/mysql/data/mysql.err

9.启动mysql

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

启动

service mysql start
ps -ef|grep mysql

10.登陆mysql，修改密码

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

登陆

mysql -uroot -p

登录后执行以下代码后重新登录

SET PASSWORD = '123456';
ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;
FLUSH PRIVILEGES;

11.启用数据库远程链接

root登录数据库后执行

use mysql                                            #访问mysql库
update user set host = '%' where user = 'root';      #使root能再任何host访问
FLUSH PRIVILEGES;                                    #刷新