On 20/10/2020 11:02, Javier Pena wrote:

Hi guys. I'm trying to deploy with "packstack --allinone" and it always (tried ~5 times) fails with: ... ERROR : Error appeared during Puppet run:A.B.C.D_compute.pp Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns: pymysql.err.OperationalError: (1040, 'Too many connections') You will find full trace in log /var/tmp/packstack/20201018-183415-ik3ijyw7/manifests/172.24.154.202_compute.pp.log Please check log file /var/tmp/packstack/20201018-183415-ik3ijyw7/openstack-setup.log for more information

If some expert might be interested then in /var/tmp/packstack/20201018-183415-ik3ijyw7/manifests/172.24.154.202_compute.pp.log .... Notice: /Stage[main]/Nova::Compute::Libvirt/Nova_config[DEFAULT/compute_driver]/ensure: created Notice: /Stage[main]/Nova::Compute::Libvirt/Nova_config[vnc/server_listen]/ensure: created Notice: /Stage[main]/Nova::Compute::Libvirt/Nova_config[libvirt/virt_type]/ensure: created Notice: /Stage[main]/Nova::Compute::Libvirt/Nova_config[libvirt/cpu_mode]/ensure: created Notice: /Stage[main]/Nova::Compute::Libvirt/Nova_config[libvirt/inject_password]/ensure: created Notice: /Stage[main]/Nova::Compute::Libvirt/Nova_config[libvirt/inject_key]/ensure: created Notice: /Stage[main]/Nova::Compute::Libvirt/Nova_config[libvirt/inject_partition]/ensure: created Notice: /Stage[main]/Nova::Migration::Libvirt/Nova_config[libvirt/live_migration_uri]/ensure: created Notice: /Stage[main]/Nova::Compute::Libvirt::Services/Service[libvirt]/ensure: ensure changed 'stopped' to 'running' Notice: /Stage[main]/Neutron::Deps/Anchor[neutron::service::begin]: Triggered 'refresh' from 2 events Notice: /Stage[main]/Nova::Deps/Anchor[nova::config::end]: Triggered 'refresh' from 22 events Notice: /Stage[main]/Nova::Deps/Anchor[nova::service::begin]: Triggered 'refresh' from 1 event Notice: /Stage[main]/Nova::Compute/Nova::Generic_service[compute]/Service[nova-compute]/ensure: ensure changed 'stopped' to 'running' Notice: /Stage[main]/Nova::Deps/Anchor[nova::service::end]: Triggered 'refresh' from 1 event Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns: An error has occurred: Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns: Traceback (most recent call last): Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2262, in _wrap_pool_connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return fn() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 294, in unique_connection Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return _ConnectionFairy._checkout(self) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 751, in _checkout Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     fairy = _ConnectionRecord.checkout(pool) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 483, in checkout Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     rec = pool._do_get() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/impl.py", line 138, in _do_get Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     self._dec_overflow() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/util/langhelpers.py", line 68, in __exit__ Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     compat.reraise(exc_type, exc_value, exc_tb) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 129, in reraise Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     raise value Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/impl.py", line 135, in _do_get Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return self._create_connection() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 299, in _create_connection Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return _ConnectionRecord(self) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 428, in __init__ Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     self.__connect(first_connect_check=True) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 630, in __connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     connection = pool._invoke_creator(self) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/engine/strategies.py", line 114, in connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return dialect.connect(*cargs, **cparams) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/engine/default.py", line 453, in connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return self.dbapi.connect(*cargs, **cparams) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/__init__.py", line 94, in Connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return Connection(*args, **kwargs) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 325, in __init__ Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     self.connect() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 599, in connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     self._request_authentication() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 861, in _request_authentication Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     auth_packet = self._read_packet() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 684, in _read_packet Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     packet.check_error() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/protocol.py", line 220, in check_error Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     err.raise_mysql_exception(self._data) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/err.py", line 109, in raise_mysql_exception Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     raise errorclass(errno, errval) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns: pymysql.err.OperationalError: (1040, 'Too many connections') Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:

Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns: The above exception was the direct cause of the following exception: Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:

Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns: Traceback (most recent call last): Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/nova/cmd/manage.py", line 2777, in main Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     ret = fn(*fn_args, **fn_kwargs) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/nova/cmd/manage.py", line 1144, in discover_hosts Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     by_service) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/nova/objects/host_mapping.py", line 256, in discover_hosts Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     cell_mappings = objects.CellMappingList.get_all(ctxt) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/oslo_versionedobjects/base.py", line 184, in wrapper Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     result = fn(cls, context, *args, **kwargs) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/nova/objects/cell_mapping.py", line 256, in get_all Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     db_mappings = cls._get_all_from_db(context) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/oslo_db/sqlalchemy/enginefacade.py", line 1013, in wrapper Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     with self._transaction_scope(context): Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/contextlib.py", line 81, in __enter__ Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return next(self.gen) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/oslo_db/sqlalchemy/enginefacade.py", line 1063, in _transaction_scope Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     context=context) as resource: Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/contextlib.py", line 81, in __enter__ Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return next(self.gen) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/oslo_db/sqlalchemy/enginefacade.py", line 658, in _session Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     bind=self.connection, mode=self.mode) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/oslo_db/sqlalchemy/enginefacade.py", line 418, in _create_session Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     self._start() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/oslo_db/sqlalchemy/enginefacade.py", line 510, in _start Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     engine_args, maker_args) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/oslo_db/sqlalchemy/enginefacade.py", line 534, in _setup_for_connection Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     sql_connection=sql_connection, **engine_kwargs) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/debtcollector/renames.py", line 43, in decorator Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return wrapped(*args, **kwargs) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/oslo_db/sqlalchemy/engines.py", line 201, in create_engine Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     test_conn = _test_connection(engine, max_retries, retry_interval) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/oslo_db/sqlalchemy/engines.py", line 376, in _test_connection Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return engine.connect() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2193, in connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return self._connection_cls(self, **kwargs) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 103, in __init__ Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     else engine.raw_connection() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2293, in raw_connection Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     self.pool.unique_connection, _connection Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2266, in _wrap_pool_connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     e, dialect, self Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1534, in _handle_dbapi_exception_noconnection Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     util.raise_from_cause(newraise, exc_info) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 383, in raise_from_cause Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     reraise(type(exception), exception, tb=exc_tb, cause=cause) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 128, in reraise Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     raise value.with_traceback(tb) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2262, in _wrap_pool_connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return fn() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 294, in unique_connection Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return _ConnectionFairy._checkout(self) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 751, in _checkout Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     fairy = _ConnectionRecord.checkout(pool) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 483, in checkout Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     rec = pool._do_get() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/impl.py", line 138, in _do_get Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     self._dec_overflow() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/util/langhelpers.py", line 68, in __exit__ Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     compat.reraise(exc_type, exc_value, exc_tb) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 129, in reraise Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     raise value Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/impl.py", line 135, in _do_get Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return self._create_connection() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 299, in _create_connection Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return _ConnectionRecord(self) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 428, in __init__ Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     self.__connect(first_connect_check=True) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 630, in __connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     connection = pool._invoke_creator(self) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/engine/strategies.py", line 114, in connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return dialect.connect(*cargs, **cparams) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib64/python3.6/site-packages/sqlalchemy/engine/default.py", line 453, in connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return self.dbapi.connect(*cargs, **cparams) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/__init__.py", line 94, in Connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     return Connection(*args, **kwargs) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 325, in __init__ Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     self.connect() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 599, in connect Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     self._request_authentication() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 861, in _request_authentication Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     auth_packet = self._read_packet() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/connections.py", line 684, in _read_packet Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     packet.check_error() Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/protocol.py", line 220, in check_error Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     err.raise_mysql_exception(self._data) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:   File "/usr/lib/python3.6/site-packages/pymysql/err.py", line 109, in raise_mysql_exception Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns:     raise errorclass(errno, errval) Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns: sqlalchemy.exc.OperationalError: (pymysql.err.OperationalError) (1040, 'Too many connections') Notice: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]/returns: (Background on this error at: http://sqlalche.me/e/e3q8) Error: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]: Failed to call refresh: 'nova-manage  cell_v2 discover_hosts' returned 255 instead of one of [0] Error: /Stage[main]/Nova::Cell_v2::Discover_hosts/Exec[nova-cell_v2-discover_hosts]: 'nova-manage  cell_v2 discover_hosts' returned 255 instead of one of [0]

Hi,

This might happen if you have a lot of CPUs in your machine, since Packstack will spawn by default 1 worker per CPU on every service. In some cases, that is too much for the default MariaDB open file parameters.

Can you try adding "--service-workers=2" to your packstack command-line? Alternatively, you can set the CONFIG_SERVICE_WORKERS option in your answer file.

Yes! that seems to be the fix for my. Lots of cores in the box is my case.

Regards, Javier

Bit discouraging to fail at start but I trust you can share some good advice. I'm on Centos8 with ussuri. Many thanks, L.