安装mysql数据库
在windows上面下载
http://dev.mysql.com/downloads/mysql/
在liunx系统上可直接wget,
wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.21-el7-x86_64.tar.gz
rpm -qa |grep mysql
rpm -e --nodeps xxx(xxx是搜索结果)
yum -y install make gcc-c++ cmake bison-devel ncurses-devel libaio
yum -y install libaio libaio-devel
yum -y install perl-Data-Dumper
yum -y install net-tools
tar -xvf mysql-5.7.21-el7-x86_64.tar.gz
cd mysql-5.7.21-el7-x86_64