Install Minion

CentOS7

rpm -Uvh https://repo.saltstack.com/yum/redhat/salt-repo-latest-2.el7.noarch.rpm
yum install salt-minion

CentOS6

rpm -Uvh https://repo.saltstack.com/yum/redhat/salt-repo-latest-2.el6.noarch.rpm
yum install salt-minion

Xenserver 7.2

rpm -Uvh https://repo.saltstack.com/yum/redhat/salt-repo-latest-2.el6.noarch.rpm
rpm -ivh --nodeps https://www.rpmfind.net/linux/centos/7.4.1708/updates/x86_64/Packages/systemd-python-219-42.el7_4.4.x86_64.rpm
yum install salt-minion --enablerepo=base