[root@controller ~]# yum update
[root@compute1 ~]# yum update
[root@compute2 ~]# yum update


[root@controller ~]# yum install centos-release-openstack-pike


[root@controller ~]# yum updater


[root@controller ~]# yum install openstack-packstack


[root@controller ~]# packstack --gen-answer-file=/root/answers.txt


[root@controller ~]# packstack --answer-file=/root/answers.txt--timeout=600


[root@controller ~]# source /root/keystonerc_admin
[root@controller ~(keystone_admin)]#