Centos上安装mysql

yum install -y java-1.8.0-openjdk-devel.x86_64

java -version

wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

#进入安装目录下
> cd /etc/yum.repos.d/
> yum install mysql-server

 systemctl start mysqld

mysql -u root -p

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

mysql -h 127.0.0.1 -u root -p

>mysql alter user 'root'@'localhost' identified by '123';

mysql> use mysql;
mysql> update user set host = '%' where user = 'root';
mysql> flush privileges;
mysql> quit;
$ systemctl restart mysqld.service