UnknownRemoteError: Code<UNKNOWN>: Unknown Error when calling delete_host_maps

[Dan Poler]

MAAS Version 1.8.0 (beta7+bzr3926)

I'm using virtual machines via libvirt.
Pick a node in the web interface, and commission it. It boots normally and starts to commission. During the commissioning process, INTERNAL SERVER ERROR's will be seen on its console. Shortly thereafter it powers off. Even though it has powered off, MAAS still shows it in the "Commissioning" state - so it's unusable, all I can do is Abort the node and start over and trigger the same sequence of events.

ubuntu@maas-server:/var/log/maas$ dpkg -l '*maas*' |cat
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-===================================-====================================-============-===============================================================================
ii maas 1.8.0~beta7+bzr3926-0ubuntu1~trusty1 all MAAS server all-in-one metapackage
ii maas-cli 1.8.0~beta7+bzr3926-0ubuntu1~trusty1 all MAAS command line API tool
ii maas-cluster-controller 1.8.0~beta7+bzr3926-0ubuntu1~trusty1 all MAAS server cluster controller
ii maas-common 1.8.0~beta7+bzr3926-0ubuntu1~trusty1 all MAAS server common files
ii maas-dhcp 1.8.0~beta7+bzr3926-0ubuntu1~trusty1 all MAAS DHCP server
ii maas-dns 1.8.0~beta7+bzr3926-0ubuntu1~trusty1 all MAAS DNS server
ii maas-proxy 1.8.0~beta7+bzr3926-0ubuntu1~trusty1 all MAAS Caching Proxy
ii maas-region-controller 1.8.0~beta7+bzr3926-0ubuntu1~trusty1 all MAAS server complete region controller
ii maas-region-controller-min 1.8.0~beta7+bzr3926-0ubuntu1~trusty1 all MAAS Server minimum region controller
ii python-django-maas 1.8.0~beta7+bzr3926-0ubuntu1~trusty1 all MAAS server Django web framework
ii python-maas-client 1.8.0~beta7+bzr3926-0ubuntu1~trusty1 all MAAS python API client
ii python-maas-provisioningserver 1.8.0~beta7+bzr3926-0ubuntu1~trusty1 all MAAS server provisioning libraries

[Raphaël Badin (rvb)]

The core problem seems to be this crash: http://paste.ubuntu.com/11387380/

Probably similar to bug 1457879 (which is worked on right now.)

[Gavin Panella (allenap)]

I think this is a manifestation of bug 1457708, which has a fix committed and should be available in the next beta or release candidate for MAAS 1.8.