Centos7安装Mysql

装包#rpm -e  --nodeps  mariadb-server  #rpm -e  --nodeps  mariadb#tar -xvf  mysql-5.7.17-1.el7.x86_64.rpm-bundle.tar #rm -rf mysql-community-server-minimal-5.7.17-1.el7.x86_64.rpm#yum -y  install  perl-Data-Dumper  #yum -y  install perl-JSON    #rpm -Uvh mysql-community-*.rpm#rpm -qa  | grep -i mysql修改配置文件  /etc/my.cnf启动服务#systemctl  start mysqld#systemctl  status mysqld#systemctl  enable mysqld#netstat -utnalp  | grep  :3306设置数据库管理员本机登录的密码# grep password /var/log/mysqld.log#mysql   -uroot   -p"初始密码"mysql> set global validate_password_policy=0;mysql>set global validate_password_length=6;mysql> alter  user  root@"localhost"  identified by "123456";mysql>quit#mysql  -uroot  -p123456mysql>#vim /etc/my.cnf[mysqld]validate_password_policy=0validate_password_length=6:wq#systemctl  stop  mysqld#systemctl  start  mysqld#mysql  -uroot  -p123456mysql>