1

從官網(wǎng)上下載MySQL安裝包mysql-5.7.26-1.el7.x86_64.rpm-bundle.tar

2

解壓文件：
tar -xvf mysql-5.7.26-1.el7.x86_64.rpm-bundle.tar

3

本地安裝 comm client libs libs-compat dev server 根據(jù)實際安裝環(huán)境安裝其他缺失的包
yum localinstall mysql-community-libs-5.7.26-1.el7.x86_64.rpm mysql-community-libs-compat-5.7.26-1.el7.x86_64.rpm mysql-community-common-5.7.26-1.el7.x86_64.rpm mysql-community-client-5.7.26-1.el7.x86_64.rpm mysql-community-devel-5.7.26-1.el7.x86_64.rpm mysql-community-server-5.7.26-1.el7.x86_64.rpm

4

初始化mysql 
mkdir /udata/mysql 
chown mysql:mysql /udata/mysql
修改/etc/my.cnf
datadir=/udata/mysql 如果修改了socket的位置務(wù)必[client] 加上socket 對應的位置
myqld --initialize 并查看mysql生成的隨機密碼 ，默認位于 /var/log/mysqld.log中

5

啟動mysql服務(wù)
    systemctl enable mysqld
    systemctl start mysqld

6

mysql  -uroot -p上訴隨機密碼  連接到mysql
    set password = password('xxx') 修改密碼 xxx為修改后的密碼

7

update user set host = '%' where host='localhost';
    flush privileges
    允許其他主機遠程連接mysql