cat > /etc/yum.repos.d/mariadb.repo << EOF
[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.1/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1
EOF

yum install MariaDB-client -y

yum install firewalld -y
systemctl start firewalld
systemctl enable firewalld