How to install Ansible in Centos 7/RHEL 7?
$ sudo yum install wget -y
$ wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
$ yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
$ sudo rpm -i epel-release-latest-7.noarch.rpm
$ sudo yum update -y
$ sudo yum install ansible -y
$ systemctl stop firewalld
$ systemctl disable firewalld