Install Openshift on CentOS 7

Test env:
192.168.70.141    k8s-master
192.168.70.142    k8s-node1

#Add hosts file to all nodes (master,node)

cat <<EOF >> /etc/hosts
192.168.70.141 k8s-master
192.168.70.142 k8s-node1
EOF

#Add epel-release (master,node)
yum install epel-release

#Install required packages (master,node)
#yum install -y ansible pyOpenSSL docker nano wget git net-tools bind-utils iptables-services bridge-utils bash-completion kexec-tools sos psacct
yum install -y ansible docker git net-tools nano wget pyOpenSSL
yum update

#Edit the /etc/sysconfig/docker file and add --insecure-registry 172.30.0.0/16 to the OPTIONS parameter. For example:
#OPTIONS='--selinux-enabled --insecure-registry 172.30.0.0/16'

sed -i '/OPTIONS=.*/c\OPTIONS="--selinux-enabled --insecure-registry 172.30.0.0/16"' /etc/sysconfig/docker


#NOTE: NEED TO CONFIG DOCKER STORAGE SETUP!!!!!!!! OTHERWISE POD CANNOT BE USED AS NO SPACE LEFT
#e.g. WARNING: Some health checks are reporting as unhealthy: [disk-space : Only 0.372 Gb free on (master)]

#Start docker service (master,node)
service docker start

#Reboot (master,node)
reboot

#clone openshift-ansible (master)
git clone https://github.com/openshift/openshift-ansible.git

#Edit /etc/ansible/hosts
#Offical Reference: https://github.com/openshift/openshift-ansible/blob/master/inventory/byo/hosts.ose.example
#Example Reference: https://github.com/jdob/daibo/blob/master/lab/ansible/inventory.erb
#My hosts: https://gist.github.com/davistran86/b3b6f3655ad0e1a86582f0ee0a40906c
nano /etc/ansible/hosts

#Create key for logon
#for not a root user, e.g. testuser, need to set passwordless sudo
ssh-keygen -t rsa -b 4096 -f openshift.key -P ""
ssh-copy-id -i openshift.key root@192.168.70.141
ssh-copy-id -i openshift.key root@192.168.70.142

#Run installer, use openshift-ansible/playbooks/byo/config.yml
ansible-playbook -i /etc/ansible/hosts openshift-ansible/playbooks/byo/config.yml --private-key=openshift.key -v

#To add user
htpasswd /etc/origin/master/htpasswd <username>

#To uninstall openshift
ansible-playbook [-i hosts] openshift-ansible/playbooks/adhoc/uninstall.yml