Hi, I got the follow errors while trying to install openstack nova on centos6.3 through puppet. I am using puppet2.7.14 with puppetdb. So how to debug this issue and find out the problem? notice: /Stage[main]/Keystone::Endpoint/Keystone_endpoint[keystone]: Dependency Keystone_service[keystone] has failures: true warning: /Stage[main]/Keystone::Endpoint/Keystone_endpoint[keystone]: Skipping because of failed dependencies err: Could not prefetch keystone_user_role provider ''keystone'': undefined method `collect'' for nil:NilClass notice: /Stage[main]/Nova::Keystone::Auth/Keystone_user_role[nova@services]: Dependency Keystone_user[nova] has failures: true notice: /Stage[main]/Nova::Keystone::Auth/Keystone_user_role[nova@services]: Dependency Keystone_role[admin] has failures: true warning: /Stage[main]/Nova::Keystone::Auth/Keystone_user_role[nova@services]: Skipping because of failed dependencies err: /Stage[main]/Keystone::Roles::Admin/Keystone_user[admin]: Could not evaluate: undefined method `collect'' for nil:NilClass err: /Stage[main]/Nova::Keystone::Auth/Keystone_endpoint[RegionOne/nova_ec2]: Could not evaluate: undefined method `collect'' for nil:NilClass err: /Stage[main]/Nova::Keystone::Auth/Keystone_service[nova]: Could not evaluate: undefined method `collect'' for nil:NilClass err: /Stage[main]/Swift::Keystone::Auth/Keystone_service[swift]: Could not evaluate: undefined method `collect'' for nil:NilClass err: /Stage[main]/Swift::Keystone::Auth/Keystone_user[swift]: Could not evaluate: undefined method `collect'' for nil:NilClass notice: /Stage[main]/Swift::Keystone::Auth/Keystone_user_role[swift@services]: Dependency Keystone_user[swift] has failures: true notice: /Stage[main]/Swift::Keystone::Auth/Keystone_user_role[swift@services]: Dependency Keystone_role[admin] has failures: true -- You received this message because you are subscribed to the Google Groups "Puppet Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to puppet-users+unsubscribe@googlegroups.com. To post to this group, send email to puppet-users@googlegroups.com. Visit this group at http://groups.google.com/group/puppet-users?hl=en. For more options, visit https://groups.google.com/groups/opt_out.