Verifique se a arquitetura de hardware do seu nó está definida como amd64 / generic.
Eu tenho um problema incomum aqui, 1. Eu tenho meu servidor MAAS rodando em um hardware com o ubuntu 14.04 server distro 2. As opções de inicialização do pxe estão ativas em todas as outras máquinas. 3. ao tentar inicializar a partir das máquinas do nó eu enfrentei um erro que é tring para encontrar o kernel do Ubuntu 12.04 e ofcorse não está disponível porque eu adicionei a imagem 14.04 ubuntu no servidor maas.
Eu não marquei o ubuntu 12.04 em imagens, mas no boot do pxe ele tenta inicializar ao invés do trusty que está disponível no maas server
estes são meus arquivos de log:
==> /var/log/maas/pserv.log <==
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 2070): <RRQDatagram(filename=pxelinux.0, mode=octet, options={'tsize': '0'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 2070): <RRQDatagram(filename=pxelinux.0, mode=octet, options={'tsize': '0'})>
2014-02-06 19:59:11-0500 [ClusterClient,client] RemoteOriginReadSession starting on 55059
2014-02-06 19:59:11-0500 [ClusterClient,client] RemoteOriginReadSession starting on 55059
2014-02-06 19:59:11-0500 [ClusterClient,client] Starting protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92ca88c0>
2014-02-06 19:59:11-0500 [ClusterClient,client] Starting protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92ca88c0>
2014-02-06 19:59:11-0500 [RemoteOriginReadSession (UDP)] Got error: <tftp.datagram.ERRORDatagram object at 0x7fcb92c18e50>
2014-02-06 19:59:11-0500 [RemoteOriginReadSession (UDP)] Got error: <tftp.datagram.ERRORDatagram object at 0x7fcb92c18e50>
2014-02-06 19:59:11-0500 [-] (UDP Port 55059 Closed)
2014-02-06 19:59:11-0500 [-] (UDP Port 55059 Closed)
2014-02-06 19:59:11-0500 [-] Stopping protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92ca88c0>
2014-02-06 19:59:11-0500 [-] Stopping protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92ca88c0>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 2071): <RRQDatagram(filename=pxelinux.0, mode=octet, options={'blksize': '1456'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 2071): <RRQDatagram(filename=pxelinux.0, mode=octet, options={'blksize': '1456'})>
2014-02-06 19:59:11-0500 [ClusterClient,client] RemoteOriginReadSession starting on 59084
2014-02-06 19:59:11-0500 [ClusterClient,client] RemoteOriginReadSession starting on 59084
2014-02-06 19:59:11-0500 [ClusterClient,client] Starting protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92ca6128>
2014-02-06 19:59:11-0500 [ClusterClient,client] Starting protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92ca6128>
2014-02-06 19:59:11-0500 [RemoteOriginReadSession (UDP)] Final ACK received, transfer successful
2014-02-06 19:59:11-0500 [RemoteOriginReadSession (UDP)] Final ACK received, transfer successful
2014-02-06 19:59:11-0500 [-] (UDP Port 59084 Closed)
2014-02-06 19:59:11-0500 [-] (UDP Port 59084 Closed)
2014-02-06 19:59:11-0500 [-] Stopping protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92ca6128>
2014-02-06 19:59:11-0500 [-] Stopping protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92ca6128>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49152): <RRQDatagram(filename=pxelinux.cfg/37333336-3436-435a-3234-313130435359, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49152): <RRQDatagram(filename=pxelinux.cfg/37333336-3436-435a-3234-313130435359, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49153): <RRQDatagram(filename=pxelinux.cfg/01-2c-44-fd-96-2a-ac, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49153): <RRQDatagram(filename=pxelinux.cfg/01-2c-44-fd-96-2a-ac, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
==> /var/log/maas/maas-django.log <==
ERROR 2014-02-06 19:59:11,536 maasserver Unable to identify boot image for (ubuntu/amd64/hwe-p/precise/commissioning): cluster 'maas' does not have matching boot image.
==> /var/log/maas/pserv.log <==
2014-02-06 19:59:11-0500 [HTTPPageGetter,client] RemoteOriginReadSession starting on 59043
2014-02-06 19:59:11-0500 [HTTPPageGetter,client] RemoteOriginReadSession starting on 59043
2014-02-06 19:59:11-0500 [HTTPPageGetter,client] Starting protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92ca9758>
2014-02-06 19:59:11-0500 [HTTPPageGetter,client] Starting protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92ca9758>
2014-02-06 19:59:11-0500 [RemoteOriginReadSession (UDP)] Final ACK received, transfer successful
2014-02-06 19:59:11-0500 [RemoteOriginReadSession (UDP)] Final ACK received, transfer successful
2014-02-06 19:59:11-0500 [-] (UDP Port 59043 Closed)
2014-02-06 19:59:11-0500 [-] (UDP Port 59043 Closed)
2014-02-06 19:59:11-0500 [-] Stopping protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92ca9758>
2014-02-06 19:59:11-0500 [-] Stopping protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92ca9758>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49154): <RRQDatagram(filename=ifcpu64.c32, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49154): <RRQDatagram(filename=ifcpu64.c32, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [-] RemoteOriginReadSession starting on 42954
2014-02-06 19:59:11-0500 [-] RemoteOriginReadSession starting on 42954
2014-02-06 19:59:11-0500 [-] Starting protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92c6c5a8>
2014-02-06 19:59:11-0500 [-] Starting protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92c6c5a8>
2014-02-06 19:59:11-0500 [RemoteOriginReadSession (UDP)] Final ACK received, transfer successful
2014-02-06 19:59:11-0500 [RemoteOriginReadSession (UDP)] Final ACK received, transfer successful
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49155): <RRQDatagram(filename=ubuntu/amd64/hwe-p/precise/no-such-image/boot-kernel, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49155): <RRQDatagram(filename=ubuntu/amd64/hwe-p/precise/no-such-image/boot-kernel, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [-] (UDP Port 42954 Closed)
2014-02-06 19:59:11-0500 [-] (UDP Port 42954 Closed)
2014-02-06 19:59:11-0500 [-] Stopping protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92c6c5a8>
2014-02-06 19:59:11-0500 [-] Stopping protocol <tftp.bootstrap.RemoteOriginReadSession instance at 0x7fcb92c6c5a8>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49156): <RRQDatagram(filename=ubuntu/amd64/hwe-p/precise/no-such-image/boot-kernel.cbt, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49156): <RRQDatagram(filename=ubuntu/amd64/hwe-p/precise/no-such-image/boot-kernel.cbt, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49157): <RRQDatagram(filename=ubuntu/amd64/hwe-p/precise/no-such-image/boot-kernel.0, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49157): <RRQDatagram(filename=ubuntu/amd64/hwe-p/precise/no-such-image/boot-kernel.0, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49158): <RRQDatagram(filename=ubuntu/amd64/hwe-p/precise/no-such-image/boot-kernel.com, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49158): <RRQDatagram(filename=ubuntu/amd64/hwe-p/precise/no-such-image/boot-kernel.com, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49159): <RRQDatagram(filename=ubuntu/amd64/hwe-p/precise/no-such-image/boot-kernel.c32, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
2014-02-06 19:59:11-0500 [TFTP (UDP)] Datagram received from ('172.20.90.103', 49159): <RRQDatagram(filename=ubuntu/amd64/hwe-p/precise/no-such-image/boot-kernel.c32, mode=octet, options={'tsize': '0', 'blksize': '1408'})>
Verifique se a arquitetura de hardware do seu nó está definida como amd64 / generic.