openstack flavor list
openstack image list
openstack security group list
openstack image list | grep 'kernel'
openstack security group rule list default
openstack keypair list

$ mysql -u root -p

CREATE DATABASE keystone;

$ openssl rand -hex 10

nova service-delete 10

glance image-delete

openstack image list
openstack compute service list

Nova

service nova-api restart
service nova-consoleauth restart
service nova-scheduler restart
service nova-conductor restart
service nova-novncproxy restart

Neutron

service neutron-server restart
service neutron-linuxbridge-agent restart
service neutron-dhcp-agent restart
service neutron-metadata-agent restart
service neutron-l3-agent restart

Database

systemctl status httpd
systemctl restart httpd
Reference:
http://www.tuxfixer.com/openstack-unable-to-connect-to-horizon-dashboard/

Modify /etc/hostname to reflect the hostname that you want
cloud-controller-01 ( for example )

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