O MAAS Region Controller está bem conectado ao Rack Controller, mas desde então nunca foi sincronizado. 
EstavaverificandoologdeerrosnoRackControllermostrando-meoseguinte:
May1903:26:45rackAmaas.networks.monitor:[info]Networksmonitoringservice:ProcessID6121assumedresponsibility.May1903:27:00rackAmaas.dhcp.probe:[error]Can'tinitiateDHCPprobe;noRPCconnectiontoregion.May1903:27:00rackAmaas.boot_image_download_service:[error]Can'tinitiateimagedownload,noRPCconnectiontoregion.May1903:27:16rackAmaas.service_monitor_service:[error]Can'tupdateservicestatuses,noRPCconnectiontoregion.May1903:28:15rackAmaas.service_monitor_service:[error]Can'tupdateservicestatuses,noRPCconnectiontoregion.May1903:29:15rackAmaas.service_monitor_service:[error]Can'tupdateservicestatuses,noRPCconnectiontoregion.May1903:30:15rackAmaas.service_monitor_service:[error]Can'tupdateservicestatuses,noRPCconnectiontoregion.May1903:54:42rackAmaas.networks.monitor:[info]Networksmonitoringservice:ProcessID9896assumedresponsibility.May1903:54:43rackAmaas.tftp:[warn]Nobootimageshavebeenimportedfromtheregion.May1903:54:47rackAmaas.import-images:[info]Startedimportingbootimages.May1903:54:47rackAmaas.import-images:[info]Downloadingimagedescriptionsfromhttp://192.168.1.52/MAAS/images-stream/streams/v1/index.jsonMay1903:54:48rackAmaas.import-images:[info]Downloadingbootresourcesfromhttp://192.168.1.52/MAAS/images-stream/streams/v1/index.jsonMay1903:57:59rackAmaas.networks.monitor:[info]Networksmonitoringservice:ProcessID10278assumedresponsibility.May1903:58:02rackAmaas.tftp:[warn]Nobootimageshavebeenimportedfromtheregion.May1903:58:04rackAmaas.import-images:[info]Startedimportingbootimages.May1903:58:04rackAmaas.import-images:[info]Downloadingimagedescriptionsfromhttp://192.168.1.52:5240/MAAS/images-stream/streams/v1/index.jsonMay1903:58:05rackAmaas.import-images:[info]Downloadingbootresourcesfromhttp://192.168.1.52:5240/MAAS/images-stream/streams/v1/index.jsonMay1903:58:30rackAmaas.refresh:[info]Refreshingrackcontrollerhardwareinformation.May1903:58:31rackAmaas.service_monitor:[info]Service'ntp'hasbeenrestarted.Itscurrentstateis'on'and'running'.May1904:05:29rackAmaas.import-images:[info]UpdatingbootimageiSCSItargets.May1904:05:29rackAmaas.import-images:[warn]Unabletoimportbootimages;cleaningupfailedsnapshotandcache.May1904:05:30rackAmaas.boot_image_download_service:[error]Failedtodownloadimages:Invalidsha256Checksumathttp://192.168.1.52:5240/MAAS/images-stream/ubuntu/amd64/hwe-x-lowlatency/trusty/20170509/boot-kernel.Found3004a1440bcbe73107d38b7ffdb6c8d856cdae25e4fde11a908d438e6baaedcc.Expected638678c39b65bb2e8791298bd2e2e73317b19208663b7af72c08a4f088d70f23.read5857280bytesexpected5850224bytes.(size5857280expected5850224)May1904:07:27rackAmaas.service_monitor:[error]Whilemonitoringservice'ntp_rack'anerrorwasencountered:Connectiontotheothersidewaslostinanon-cleanfashion.May1904:07:27rackAmaas.power_monitor_service:[error]Failedtoquerynodes'powerstatus:Connectiontotheothersidewaslostinanon-cleanfashion.May1904:07:59rackAmaas.import-images:[info]Startedimportingbootimages.May1904:07:59rackAmaas.import-images:[info]Downloadingimagedescriptionsfromhttp://192.168.1.52:5240/MAAS/images-stream/streams/v1/index.jsonMay1904:08:00rackAmaas.import-images:[info]Downloadingbootresourcesfromhttp://192.168.1.52:5240/MAAS/images-stream/streams/v1/index.jsonMay1904:10:57rackAmaas.networks.monitor:[info]Networksmonitoringservice:ProcessID1164assumedresponsibility.May1904:11:12rackAmaas.dhcp.probe:[error]Can'tinitiateDHCPprobe;noRPCconnectiontoregion.May1904:11:12rackAmaas.boot_image_download_service:[error]Can'tinitiateimagedownload,noRPCconnectiontoregion.May1904:11:27rackAmaas.service_monitor_service:[error]Can'tupdateservicestatuses,noRPCconnectiontoregion.May1904:12:27rackAmaas.service_monitor_service:[error]Can'tupdateservicestatuses,noRPCconnectiontoregion.May1904:13:27rackAmaas.service_monitor_service:[error]Can'tupdateservicestatuses,noRPCconnectiontoregion.May1904:14:27rackAmaas.service_monitor_service:[error]Can'tupdateservicestatuses,noRPCconnectiontoregion.May1904:15:27rackAmaas.service_monitor_service:[error]Can'tupdateservicestatuses,noRPCconnectiontoregion.May1904:16:04rackAmaas.networks.monitor:[info]Networksmonitoringservice:ProcessID1435assumedresponsibility.May1904:16:09rackAmaas.import-images:[info]Startedimportingbootimages.May1904:16:09rackAmaas.import-images:[info]Downloadingimagedescriptionsfromhttp://192.168.1.52:5240/MAAS/images-stream/streams/v1/index.jsonMay1904:16:10rackAmaas.import-images:[info]Downloadingbootresourcesfromhttp://192.168.1.52:5240/MAAS/images-stream/streams/v1/index.jsonMay1904:16:11rackAmaas.tftp:[warn]Nobootimageshavebeenimportedfromtheregion.May1904:16:34rackAmaas.refresh:[info]Refreshingrackcontrollerhardwareinformation.May1904:16:36rackAmaas.service_monitor:[info]Service'ntp'hasbeenrestarted.Itscurrentstateis'on'and'running'.May1904:23:57rackAmaas.power_monitor_service:[error]Failedtoquerynodes'powerstatus:Connectiontotheothersidewaslostinanon-cleanfashion.May1904:23:59rackAmaas.service_monitor:[error]Whilemonitoringservice'ntp_rack'anerrorwasencountered:Connectiontotheothersidewaslostinanon-cleanfashion.May1904:24:04rackAmaas.power_monitor_service:[error]Lostconnectiontoregioncontroller.May1905:10:16rackAmaas.drivers.power.manual:[info]Youneedtocheckpowerstateof8dhscsmanually.May1905:10:16rackAmaas.drivers.power.manual:[info]Youneedtocheckpowerstateof8dhscsmanually.May1905:40:16rackAmaas.drivers.power.manual:[info]Youneedtocheckpowerstateof8dhscsmanually.May1905:45:22rackAmaas.service_monitor:[info]Service'maas-dhcpd'hasbeenrestarted.Itscurrentstateis'on'and'running'.May1905:45:23rackAmaas.service_monitor:[info]Service'maas-dhcpd6'hasbeenrestarted.Itscurrentstateis'on'and'running'.May1905:45:37rackAmaas.service_monitor:[info]Service'maas-dhcpd'hasbeenrestarted.Itscurrentstateis'on'and'running'.May1905:46:16rackAmaas.service_monitor:[info]Service'maas-dhcpd'hasbeenrestarted.Itscurrentstateis'on'and'running'.May1905:46:31rackAmaas.service_monitor:[info]Service'maas-dhcpd'isnotoff,itwillbestopped.May1905:46:31rackAmaas.service_monitor:[info]Service'maas-dhcpd'hasbeenstoppedandis'dead'.May1905:46:31rackAmaas.service_monitor:[info]Service'maas-dhcpd6'isnotoff,itwillbestopped.May1905:46:31rackAmaas.service_monitor:[info]Service'maas-dhcpd6'hasbeenstoppedandis'dead'.May1906:00:04rackAmaas.power_monitor_service:[error]Lostconnectiontoregioncontroller.May1906:41:34rackAmaas.power_monitor_service:[error]Lostconnectiontoregioncontroller.May1906:41:34rackAmaas.service_monitor:[error]Whilemonitoringservice'ntp_rack'anerrorwasencountered:Connectionwasclosedcleanly.Aquiestáoutrafotodoproblema,aindacarregandodesdeashoras.
Não é possível descobrir onde o problema pode estar.
Minhas soluções, acabei de registrar novamente o dispositivo usando o seguinte:
sudo maas-rack register --url http://192.168.1.11:5240/MAAS --secret $secret
se você não sabe onde obter o segredo do MAAS, agradeço por isso:
Nodes - > Controllers - > Add Rack Controller : Uma caixa preta como esta vai cair:
Isso corrige o problema.