Open Stack

Hello,

When using following site to create an advanced Overcloud, I find that sometimes keystone works, sometimes does not work.
https://repos.fedorapeople.org/repos/openstack-m/docs/master/advanced_deployment/advanced_deployment.html


------------
$ source overcloudrc 
$ openstack-status 
== Nova services ==
openstack-nova-api:                     active
openstack-nova-cert:                    inactive  (disabled on boot)
openstack-nova-compute:                 active
openstack-nova-network:                 inactive  (disabled on boot)
openstack-nova-scheduler:               active
openstack-nova-conductor:               active
== Glance services ==
openstack-glance-api:                   active
openstack-glance-registry:              active
== Keystone service ==
openstack-keystone:                     active
== Horizon service ==
openstack-dashboard:                    active
== neutron services ==
neutron-server:                         active
neutron-dhcp-agent:                     active
neutron-l3-agent:                       inactive  (disabled on boot)
neutron-metadata-agent:                 inactive  (disabled on boot)
neutron-openvswitch-agent:              active
== Swift services ==
openstack-swift-proxy:                  active
openstack-swift-account:                active
openstack-swift-container:              active
openstack-swift-object:                 active
== Ceilometer services ==
openstack-ceilometer-api:               active
openstack-ceilometer-central:           active
openstack-ceilometer-compute:           inactive  (disabled on boot)
openstack-ceilometer-collector:         active
openstack-ceilometer-alarm-notifier:    active
openstack-ceilometer-alarm-evaluator:   active
openstack-ceilometer-notification:      active
== Heat services ==
openstack-heat-api:                     active
openstack-heat-api-cfn:                 active
openstack-heat-api-cloudwatch:          active
openstack-heat-engine:                  active
== Support services ==
libvirtd:                               active
openvswitch:                            active
dbus:                                   active
rabbitmq-server:                        active
memcached:                              active
----------

But the first time:
----------
$ source overcloudrc
$ openstack user list
Invalid OpenStack Identity credentials.
---------

the second time:
---------
$ openstack user list
+----------------------------------+------------+
| ID                               | Name       |
+----------------------------------+------------+
| 0faeea08393e4a4db07c06dfbd3607db | cinderv2   |
| 17b23141251f4c838f2125e47efe2745 | ceilometer |
| 1e765d328ae34685b6024bbf1ea874d1 | nova       |
| 2b2ca0f5803a4ac08c6dd788b55348e2 | glance     |
| af255c0288eb4ef3bb9db8b9f49bcab5 | heat       |
| b955d565d0d34adcab4165ca6e8c336a | cinder     |
| baad3e14bc0d4e68aba0b328279fba43 | ec2        |
| c3ea813bbe0d4ac9932cb07a6ab86665 | swift      |
| ce424df01e1146bb84e16681e4e51534 | neutron    |
| dfe4e66cfc2f46a4bd0d38f0bbea3b7a | admin      |
+----------------------------------+------------+
---------

Is it bug?