Hi Team,
Wanted to let you know why we are having consistent functional test
failures in the gate.
This is being caused by Nova returning "No valid host" to heat:
2015-08-13 08:26:16.303 31543 INFO heat.engine.resource [-] CREATE:
Server "kube_minion" [12ab45ef-0177-4118-9ba0-3fffbc3c1d1a] Stack
"testbay-y366b2atg6mm-kube_minions-cdlfyvhaximr-0-dufsjliqfoet"
[b40f0c9f-cb54-4d75-86c3-8a9f347a27a6]
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource Traceback (most
recent call last):
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource File
"/opt/stack/new/heat/heat/engine/resource.py", line 625, in _action_recorder
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource yield
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource File
"/opt/stack/new/heat/heat/engine/resource.py", line 696, in _do_action
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource yield
self.action_handler_task(action, args=handler_args)
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource File
"/opt/stack/new/heat/heat/engine/scheduler.py", line 320, in wrapper
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource step =
next(subtask)
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource File
"/opt/stack/new/heat/heat/engine/resource.py", line 670, in
action_handler_task
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource while not
check(handler_data):
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource File
"/opt/stack/new/heat/heat/engine/resources/openstack/nova/server.py",
line 759, in check_create_complete
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource return
self.client_plugin()._check_active(server_id)
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource File
"/opt/stack/new/heat/heat/engine/clients/os/nova.py", line 232, in
_check_active
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource 'code':
fault.get('code', _('Unknown'))
2015-08-13 08:26:16.303 31543 ERROR heat.engine.resource
ResourceInError: Went to status ERROR due to "Message: No valid host was
found. There are not enough hosts available., Code: 500"
And this in turn is being caused by the compute instance running out of
disk space:
2015-08-13 08:26:15.216 DEBUG nova.filters
[req-e5bb52cb-387e-4638-911e-8c72aa1b6400 admin admin] Starting with 1
host(s) get_filtered_objects /opt/stack/new/nova/nova/filters.py:70
2015-08-13 08:26:15.217 DEBUG nova.filters
[req-e5bb52cb-387e-4638-911e-8c72aa1b6400 admin admin] Filter
RetryFilter returned 1 host(s) get_filtered_objects
/opt/stack/new/nova/nova/filters.py:84
2015-08-13 08:26:15.217 DEBUG nova.filters
[req-e5bb52cb-387e-4638-911e-8c72aa1b6400 admin admin] Filter
AvailabilityZoneFilter returned 1 host(s) get_filtered_objects
/opt/stack/new/nova/nova/filters.py:84
2015-08-13 08:26:15.217 DEBUG nova.filters
[req-e5bb52cb-387e-4638-911e-8c72aa1b6400 admin admin] Filter RamFilter
returned 1 host(s) get_filtered_objects
/opt/stack/new/nova/nova/filters.py:84
2015-08-13 08:26:15.218 DEBUG nova.scheduler.filters.disk_filter
[req-e5bb52cb-387e-4638-911e-8c72aa1b6400 admin admin]
(devstack-trusty-rax-dfw-4299602, devstack-trusty-rax-dfw-4299602)
ram:5172 disk:17408 io_ops:0 instances:1 does not have 20480 MB usable
disk, it only has 17408.0 MB usable disk. host_passes
/opt/stack/new/nova/nova/scheduler/filters/disk_filter.py:60
2015-08-13 08:26:15.218 INFO nova.filters
[req-e5bb52cb-387e-4638-911e-8c72aa1b6400 admin admin] Filter DiskFilter
returned 0 hosts
For now a recheck seems to work about 1 in 2, so we can still land patches.
The fix for this could be to clean up our Magnum devstack install more
aggressively, which might be as simple as cleaning up the images we use,
or get infra to provide our tests with a larger disk size. I will
probably test out a patch today which cleans up the images we use in
devstack to see if that helps.
If anyone can help progress this let me know.
Cheers,
Tom
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