Failed to start openstack-nova-compute.service 问题解决

在装openstack allinone 版本的时候遇到的

Welcome to the Packstack setup utilityThe installation log file is available at: /var/tmp/packstack/20160802-152934-dwYeND/openstack-setup.logInstalling:Clean Up                                             [ DONE ]Discovering ip protocol version                      [ DONE ]Setting up ssh keys                                  [ DONE ]Preparing servers                                    [ DONE ]Pre installing Puppet and discovering hosts' details [ DONE ]Preparing pre-install entries                        [ DONE ]Setting up CACERT                                    [ DONE ]Preparing AMQP entries                               [ DONE ]Preparing MariaDB entries                            [ DONE ]Fixing Keystone LDAP config parameters to be undef if empty[ DONE ]Preparing Keystone entries                           [ DONE ]Preparing Glance entries                             [ DONE ]Checking if the Cinder server has a cinder-volumes vg[ DONE ]Preparing Cinder entries                             [ DONE ]Preparing Nova API entries                           [ DONE ]Creating ssh keys for Nova migration                 [ DONE ]Gathering ssh host keys for Nova migration           [ DONE ]Preparing Nova Compute entries                       [ DONE ]Preparing Nova Scheduler entries                     [ DONE ]Preparing Nova VNC Proxy entries                     [ DONE ]Preparing OpenStack Network-related Nova entries     [ DONE ]Preparing Nova Common entries                        [ DONE ]Preparing Neutron LBaaS Agent entries                [ DONE ]Preparing Neutron API entries                        [ DONE ]Preparing Neutron L3 entries                         [ DONE ]Preparing Neutron L2 Agent entries                   [ DONE ]Preparing Neutron DHCP Agent entries                 [ DONE ]Preparing Neutron Metering Agent entries             [ DONE ]Checking if NetworkManager is enabled and running    [ DONE ]Preparing OpenStack Client entries                   [ DONE ]Preparing Horizon entries                            [ DONE ]Preparing Swift builder entries                      [ DONE ]Preparing Swift proxy entries                        [ DONE ]Preparing Swift storage entries                      [ DONE ]Preparing Gnocchi entries                            [ DONE ]Preparing MongoDB entries                            [ DONE ]Preparing Redis entries                              [ DONE ]Preparing Ceilometer entries                         [ DONE ]Preparing Aodh entries                               [ DONE ]Preparing Nagios server entries                      [ DONE ]Preparing Nagios host entries                        [ DONE ]Preparing Puppet manifests                           [ DONE ]Copying Puppet modules and manifests                 [ DONE ]Applying 172.18.31.17_controller.pp172.18.31.17_controller.pp:                          [ DONE ]         Applying 172.18.31.17_network.pp172.18.31.17_network.pp:                             [ DONE ]      Applying 172.18.31.17_compute.pp172.18.31.17_compute.pp:                          [ ERROR ]        Applying Puppet manifests                         [ ERROR ]ERROR : Error appeared during Puppet run: 172.18.31.17_compute.ppError: Could not start Service[nova-compute]: Execution of '/usr/bin/systemctl start openstack-nova-compute' returned 6: Failed to start openstack-nova-compute.service: Unit openstack-nova-compute.service failed to load: No such file or directory.You will find full trace in log /var/tmp/packstack/20160802-152934-dwYeND/manifests/172.18.31.17_compute.pp.logPlease check log file /var/tmp/packstack/20160802-152934-dwYeND/openstack-setup.log for more informationAdditional information: * A new answerfile was created in: /root/packstack-answers-20160802-152935.txt * Time synchronization installation was skipped. Please note that unsynchronized time on server instances might be problem for some OpenStack components. * File /root/keystonerc_admin has been created on OpenStack client host 172.18.31.17. To use the command line tools you need to source the file. * To access the OpenStack Dashboard browse to http://172.18.31.17/dashboard .Please, find your login credentials stored in the keystonerc_admin in your home directory. * To use Nagios, browse to http://172.18.31.17/nagios username: nagiosadmin, password: 93ce549b8df04789

解决办法：

手动重启，然后再装就好了

service openstack-nova-compute restart