It's been 2 or 3 days that periodic tempest master is failing in 107 tests:
tempest.api.compute.admin.test_aggregates.AggregatesAdminTestJSON
tempest.api.compute.admin.test_aggregates_negative.AggregatesAdminNegativeTestJSON
tempest.api.compute.admin.test_availability_zone.AZAdminV2TestJSON.test_get_availability_zone_list
tempest.api.compute.admin.test_delete_server.DeleteServersAdminTestJSON.test_admin_delete_servers_of_others
tempest.api.compute.admin.test_delete_server.DeleteServersAdminTestJSON.test_delete_server_while_in_error_state
tempest.api.compute.admin.test_hosts.HostsAdminTestJSON.test_show_host_detail
tempest.api.compute.admin.test_hypervisor.HypervisorAdminTestJSON.test_get_hypervisor_list
tempest.api.compute.admin.test_hypervisor.HypervisorAdminTestJSON.test_get_hypervisor_list_details
tempest.api.compute.admin.test_hypervisor.HypervisorAdminTestJSON.test_get_hypervisor_show_details
tempest.api.compute.admin.test_hypervisor.HypervisorAdminTestJSON.test_get_hypervisor_show_servers
tempest.api.compute.admin.test_hypervisor.HypervisorAdminTestJSON.test_search_hypervisor
tempest.api.compute.admin.test_hypervisor_negative.HypervisorAdminNegativeTestJSON.test_get_hypervisor_uptime_with_non_admin_user
tempest.api.compute.admin.test_hypervisor_negative.HypervisorAdminNegativeTestJSON.test_search_hypervisor_with_non_admin_user
tempest.api.compute.admin.test_hypervisor_negative.HypervisorAdminNegativeTestJSON.test_show_hypervisor_with_non_admin_user
tempest.api.compute.admin.test_hypervisor_negative.HypervisorAdminNegativeTestJSON.test_show_servers_with_non_admin_user
tempest.api.compute.admin.test_servers_negative.ServersAdminNegativeTestJSON
tempest.api.compute.admin.test_services.ServicesAdminTestJSON.test_get_service_by_service_binary_name
tempest.api.compute.admin.test_server_diagnostics.ServerDiagnosticsTest.test_get_server_diagnostics
tempest.api.compute.admin.test_server_diagnostics_negative.ServerDiagnosticsNegativeTest.test_get_server_diagnostics_by_non_admin
tempest.api.compute.floating_ips.test_floating_ips_actions_negative.FloatingIPsNegativeTestJSON
tempest.api.compute.admin.test_servers.ServersAdminTestJSON
tempest.api.compute.images.test_images.ImagesTestJSON.test_create_image_from_paused_server
tempest.api.compute.admin.test_simple_tenant_usage.TenantUsagesTestJSON
tempest.api.compute.images.test_images.ImagesTestJSON.test_create_image_from_stopped_server
tempest.api.compute.images.test_images.ImagesTestJSON.test_create_image_from_suspended_server
tempest.api.compute.images.test_images.ImagesTestJSON.test_delete_saving_image
tempest.api.compute.images.test_images_negative.ImagesNegativeTestJSON.test_create_image_from_deleted_server
tempest.api.compute.admin.test_volumes_negative.VolumesAdminNegativeTest
tempest.api.compute.images.test_images_oneserver_negative.ImagesOneServerNegativeTestJSON
tempest.api.compute.floating_ips.test_floating_ips_actions.FloatingIPsTestJSON
tempest.api.compute.servers.test_attach_interfaces.AttachInterfacesTestJSON.test_add_remove_fixed_ip
tempest.api.compute.servers.test_attach_interfaces.AttachInterfacesTestJSON.test_create_list_show_delete_interfaces
tempest.api.compute.images.test_images_oneserver.ImagesOneServerTestJSON
tempest.api.compute.servers.test_disk_config.ServerDiskConfigTestJSON.test_rebuild_server_with_auto_disk_config
tempest.api.compute.servers.test_disk_config.ServerDiskConfigTestJSON.test_rebuild_server_with_manual_disk_config
tempest.api.compute.servers.test_disk_config.ServerDiskConfigTestJSON.test_update_server_from_auto_to_manual
tempest.api.compute.servers.test_instance_actions_negative.InstanceActionsNegativeTestJSON
tempest.api.compute.images.test_list_image_filters.ListImageFiltersTestJSON
tempest.api.compute.servers.test_list_server_filters.ListServerFiltersTestJSON
tempest.api.compute.servers.test_server_addresses.ServerAddressesTestJSON
tempest.api.compute.security_groups.test_security_groups.SecurityGroupsTestJSON.test_list_security_groups_by_server
tempest.api.compute.servers.test_server_addresses_negative.ServerAddressesNegativeTestJSON
tempest.api.compute.security_groups.test_security_groups.SecurityGroupsTestJSON.test_server_security_groups
tempest.api.compute.servers.test_server_group.ServerGroupTestJSON.test_create_server_with_scheduler_hint_group
tempest.api.compute.servers.test_availability_zone.AZV2TestJSON.test_get_availability_zone_list_with_non_admin_user
tempest.api.compute.servers.test_server_rescue.ServerRescueTestJSON
tempest.api.compute.servers.test_servers_negative.ServersNegativeTestJSON
tempest.api.compute.servers.test_create_server.ServersTestBootFromVolume
tempest.api.compute.volumes.test_attach_volume.AttachVolumeTestJSON.test_attach_detach_volume
tempest.api.compute.volumes.test_attach_volume.AttachVolumeTestJSON.test_list_get_volume_attachments
tempest.api.compute.servers.test_create_server.ServersTestJSON
tempest.api.compute.servers.test_create_server.ServersTestManualDisk
tempest.api.compute.servers.test_create_server_multi_nic.ServersTestMultiNic.test_verify_duplicate_network_nics
tempest.api.compute.servers.test_create_server_multi_nic.ServersTestMultiNic.test_verify_multiple_nics_order
tempest.api.compute.servers.test_delete_server.DeleteServersTestJSON.test_delete_active_server
tempest.api.compute.servers.test_delete_server.DeleteServersTestJSON.test_delete_server_while_in_attached_volume
tempest.api.compute.servers.test_delete_server.DeleteServersTestJSON.test_delete_server_while_in_pause_state
tempest.api.compute.servers.test_delete_server.DeleteServersTestJSON.test_delete_server_while_in_shelved_state
tempest.api.compute.servers.test_delete_server.DeleteServersTestJSON.test_delete_server_while_in_shutoff_state
tempest.api.compute.servers.test_delete_server.DeleteServersTestJSON.test_delete_server_while_in_suspended_state
tempest.api.compute.servers.test_instance_actions.InstanceActionsTestJSON
tempest.api.compute.servers.test_list_servers_negative.ListServersNegativeTestJSON
tempest.api.compute.servers.test_multiple_create.MultipleCreateTestJSON.test_multiple_create
tempest.api.compute.servers.test_multiple_create.MultipleCreateTestJSON.test_multiple_create_with_reservation_return
tempest.api.compute.servers.test_server_metadata.ServerMetadataTestJSON
tempest.api.compute.servers.test_server_metadata_negative.ServerMetadataNegativeTestJSON
tempest.api.compute.servers.test_server_password.ServerPasswordTestJSON
tempest.api.compute.servers.test_server_rescue_negative.ServerRescueNegativeTestJSON
tempest.api.compute.servers.test_servers.ServersTestJSON.test_create_server_with_ipv6_addr_only
tempest.api.compute.servers.test_servers.ServersTestJSON.test_create_specify_keypair
tempest.api.compute.servers.test_servers.ServersTestJSON.test_create_with_existing_server_name
tempest.api.compute.servers.test_servers.ServersTestJSON.test_update_access_server_address
tempest.api.compute.servers.test_servers.ServersTestJSON.test_update_server_name
tempest.api.compute.servers.test_servers_negative.ServersNegativeTestMultiTenantJSON
tempest.api.compute.servers.test_virtual_interfaces.VirtualInterfacesTestJSON
tempest.api.compute.volumes.test_attach_volume_negative.AttachVolumeNegativeTest.test_delete_attached_volume
tempest.api.volume.admin.test_volumes_actions.VolumesActionsTest.test_force_detach_volume
tempest.api.volume.test_volumes_snapshots.VolumesSnapshotTestJSON.test_snapshot_create_delete_with_volume_in_use
tempest.api.volume.test_volumes_snapshots.VolumesSnapshotTestJSON.test_snapshot_create_offline_delete_online
tempest.scenario.test_aggregates_basic_ops.TestAggregatesBasicOps.test_aggregate_basic_ops
tempest.scenario.test_minimum_basic.TestMinimumBasicScenario.test_minimum_basic_scenario
tempest.scenario.test_network_v6.TestGettingAddress.test_dhcp6_stateless_from_os
tempest.api.volume.test_volumes_actions.VolumesActionsTest.test_attach_detach_volume_to_instance
tempest.api.volume.test_volumes_actions.VolumesActionsTest.test_get_volume_attachment
tempest.scenario.test_network_v6.TestGettingAddress.test_dualnet_dhcp6_stateless_from_os
tempest.scenario.test_network_v6.TestGettingAddress.test_dualnet_multi_prefix_dhcpv6_stateless
tempest.scenario.test_network_v6.TestGettingAddress.test_dualnet_multi_prefix_slaac
tempest.api.volume.test_volumes_negative.VolumesNegativeTest.test_attach_volumes_with_nonexistent_volume_id
tempest.scenario.test_network_v6.TestGettingAddress.test_dualnet_slaac_from_os
tempest.scenario.test_network_v6.TestGettingAddress.test_multi_prefix_dhcpv6_stateless
tempest.scenario.test_network_advanced_server_ops.TestNetworkAdvancedServerOps.test_server_connectivity_pause_unpause
tempest.scenario.test_network_advanced_server_ops.TestNetworkAdvancedServerOps.test_server_connectivity_reboot
tempest.scenario.test_network_v6.TestGettingAddress.test_multi_prefix_slaac
tempest.scenario.test_network_advanced_server_ops.TestNetworkAdvancedServerOps.test_server_connectivity_rebuild
tempest.scenario.test_network_v6.TestGettingAddress.test_slaac_from_os
tempest.scenario.test_network_advanced_server_ops.TestNetworkAdvancedServerOps.test_server_connectivity_stop_start
tempest.scenario.test_server_advanced_ops.TestServerAdvancedOps.test_server_sequence_suspend_resume
tempest.scenario.test_network_advanced_server_ops.TestNetworkAdvancedServerOps.test_server_connectivity_suspend_resume
tempest.scenario.test_volume_boot_pattern.TestVolumeBootPattern.test_create_ebs_image_and_check_boot
tempest.scenario.test_security_groups_basic_ops.TestSecurityGroupsBasicOps.test_in_tenant_traffic
tempest.scenario.test_security_groups_basic_ops.TestSecurityGroupsBasicOps.test_port_security_disable_security_group
tempest.scenario.test_volume_boot_pattern.TestVolumeBootPattern.test_create_server_from_volume_snapshot
tempest.scenario.test_volume_boot_pattern.TestVolumeBootPattern.test_volume_boot_pattern
tempest.scenario.test_security_groups_basic_ops.TestSecurityGroupsBasicOps.test_port_update_new_security_group
tempest.scenario.test_server_basic_ops.TestServerBasicOps.test_server_basic_ops
tempest.scenario.test_shelve_instance.TestShelveInstance.test_shelve_instance
tempest.scenario.test_shelve_instance.TestShelveInstance.test_shelve_volume_backed_instance
tempest.scenario.test_snapshot_pattern.TestSnapshotPattern.test_snapshot_pattern
Mostly of them with the following failure as you can see in [1]:
Details: {u'message': u'No valid host was found. ', u'code': 500, u'created': u'2017-08-21T08:08:56Z'}
1 - http://logs.openstack.org/periodic/periodic-tripleo-ci-centos-7-ovb-nonha-tempest-oooq-master/3a9982a/logs/tempest.html.gz
Since this started to be constant, I'm opening this bug.
In nova-compute log:
2017-08-21 07:52:53.189 17605 ERROR oslo_service.