1.卸載系統自帶mysq(沒有忽略此步驟)
[admin@big-data-0 ~]$ rpm -qa|grep mysql
mysql-community-common-5.7.19-1.el6.x86_64
rpm -e --nodeps mysql-community-common-5.7.19-1.el6.x86_64
2.下載解壓安裝包
[admin@big-data-0 apps]$ wget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-5.7.23-linux-glibc2.12-x86_64.tar.gz
[admin@big-data-0 apps]$ tar -zxvf mysql-5.7.23-linux-glibc2.12-x86_64
3.修改配置文件
[admin@big-data-0 apps]$ cd mysql-5.7.23-linux-glibc2.12-x86_64/support-files/
[admin@big-data-0 support-files]$ vi mysql.server
4.安裝
[admin@big-data-0 support-files]$ sudo cp mysql.server /etc/init.d/mysqld
[admin@big-data-0 support-files]$ cd ../bin/
[admin@big-data-0 bin]$ ./mysqld --user=mysql --basedir=/home/admin/apps/mysql-5.7.23-linux-glibc2.12-x86_64 --datadir=/home/admin/data/mysql/data --initialize 
此步驟有可能報錯：/bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file:
解決方案：sudo yum remove libnuma.so.1
sudo yum -y install numactl.x86_64
yum install -y libaio
5.啟動mysql服務
[admin@big-data-0 bin]$ service mysqld start
6.登錄修改root密碼
7.卸載
