uname -a
yum list | grep mariadb

安装软件
yum install -y mariadb-server

查看重要的目录和文件
rpm -ql mariadb

/var/log/mariadb/mariadb.log
/var/lib/mysql
/etc/my.cnf
/etc/my.cnf.d/*.cnf

启动服务
systemctl start mariadb

查看监听端口
$ which netstat
/usr/bin/netstat
$ rpm -qf /usr/bin/netstat
net-tools-2.0-0.17.20131004git.el7.x86_64
$ yum install -y net-tools
$ netstat -luntp | grep mysql

进入mysql
mysql