環境：aws-ec2
1、下載
wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
2、查看服務器已安裝的版本并卸載
yum repolist enabled | grep "mysql.*-community.*"
執行后發現安裝了8.0
rpm -qa | grep -i mysql 查看安裝了哪些8.0的依賴
yum remove mysql-community-libs-compat-8.0.12-1.el7.x86_64
.....
yum install mysql57-community-release-el7-10.noarch.rpm
3、安裝
yum install mysql-community-server
4、啟動并修改密碼
service mysqld start
netstat -ntl 查看默認端口3306是否成功啟動
cat /var/log/mysqld.log |grep password 查看默認root密碼
mysql -u root -p
alter user user() identified by "fdsafdasfdas@1311231sfsa";