在CentOS 7下安裝MySQL5 7

wget -i -c

yum -y install mysql57-community-release-el7-10.noarch.rpm

yum -y install mysql-community-server

systemctl start  mysqld.service

找到預設密碼，必須先進入mysql一次，然後退出mysql.。否則無法正常啟動mysql

grep

"password" /var/log/mysqld.log

mysql -uroot -p

修改密碼策略和字元編碼並重啟

vim /etc/my.cnf

validate_password_policy=0

validate_password = off
character_set_server=utf8
init_connect=
'set names utf8'

systemctl restart mysqld

再次進入mysql，修改密碼並設定遠端訪問

grep

"password" /var/log/mysqld.log

mysql -uroot -p

alter user 'root'@'localhost' identified by 'root'

;

grant all privileges on *.* to 'root'@'%' identified by 'root' with grant option;

flush privileges;

exit
;

ps：必須按照以上步驟來，否則無法安裝mysql

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