Lab 3.2 use script to join hypervisor to cloud
Chris-M
Posts: 1
Hi, on lab 3.2 i am getting an error when running the ./tools/disocver_hosts.sh command, here is the output below, any ideas?
An error has occurred:
Traceback (most recent call last):
File "/opt/stack/nova/nova/cmd/manage.py", line 1863, in main
ret = fn(*fn_args, **fn_kwargs)
File "/opt/stack/nova/nova/cmd/manage.py", line 1583, in discover_hosts
hosts = host_mapping_obj.discover_hosts(ctxt, cell_uuid, status_fn)
File "/opt/stack/nova/nova/objects/host_mapping.py", line 206, in discover_hosts
cell_mappings = objects.CellMappingList.get_all(ctxt)
File "/usr/local/lib/python2.7/dist-packages/oslo_versionedobjects/base.py", line 184, in wrapper
result = fn(cls, context, *args, **kwargs)
File "/opt/stack/nova/nova/objects/cell_mapping.py", line 137, in get_all
db_mappings = cls._get_all_from_db(context)
File "/usr/local/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 978, in wrapper
with self._transaction_scope(context):
File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
return self.gen.next()
File "/usr/local/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 1028, in _transaction_scope
context=context) as resource:
File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__
return self.gen.next()
File "/usr/local/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 633, in _session
bind=self.connection, mode=self.mode)
File "/usr/local/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 398, in _create_session
self._start()
File "/usr/local/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 484, in _start
engine_args, maker_args)
File "/usr/local/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 506, in _setup_for_connection
"No sql_connection parameter is established")
CantStartEngineError: No sql_connection parameter is established
Comments
Hello,
The discover_hosts command was used when the an added hypervisor is not showing up after being added to the cluster. It was a bug, that may have been addressed. Were you able to add the second node, and spin up an instance without this script? As well, which node were you on when you ran the command, the devstack-cc or the compute-node?
Regards,
Hello
I had the same issue but I realized that I was on compute-node when I ran the script. Once I returned to devstack-cc, everything went well.
Thanks