centos 7 安装mysql

1 .
sudo rpm -Uvh http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm

2.
rpm -qa | grep -i mysql　查看是否安装了mysql
whereis mysql
3.
yum install -y mysql-server mysql mysql-devel

4.
service mysqld start

补充：
ps -ef | grep mysql
ps -aux | grep mysql
kill -9 pid