MAAS

UnknownRemoteError: Code<UNKNOWN>: Unknown Error raised when calling update_host_maps

Bug #1457879 reported by Raphaël Badin
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
MAAS
In Progress
Critical
Gavin Panella

Bug Description

This happened in OIL: http://paste.ubuntu.com/11284554/

It's hard to get any meaningful context given that a lot of things happen in OIL at the same time but this was triggered when a node was being started by Juju. But see the attached logs.

See original description
Revision history for this message
Raphaël Badin (rvb) wrote :
description: updated
Gavin Panella (allenap)
Changed in maas:
assignee: nobody → Gavin Panella (allenap)
status: Triaged → In Progress
Revision history for this message
Raphaël Badin (rvb) wrote :

Very similar crash (I suspect caused by the same problem): bug 1459088. See my comment: https://bugs.launchpad.net/maas/+bug/1459088/comments/4.

Revision history for this message
Gavin Panella (allenap) wrote :

I think what happened is that the cluster encountered:

  provisioningserver.service_monitor.UnknownServiceError: 'maas-dhcpd'
  is unknown to upstart.

but this, not being part of the RPC call's signature, could not be
transmitted over the wire. On the region it appeared as:

  UnknownRemoteError: Code<UNKNOWN>: Unknown Error

Work carried out for bug 1457799 should help us diagnose these issues
more rapidly in the future.

Revision history for this message
Gavin Panella (allenap) wrote :

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.

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