#4024 nova [-] __init__() takes at least 2 arguments (1 given) - openstack-nova-compute failed to start up

[GONG Jie]

This is openstack baremetal related problem. Please refer to xCAT bug #4023 first.
https://sourceforge.net/p/xcat/bugs/4023/

The testing environment is RHEL6.4 on x86-64. The following rpm packages were installed and used.

[root@dx360m4n05 ~]# rpm -qa | grep -i xcat
perl-xCAT-2.8.4-snap201403130854.noarch
xCAT-OpenStack-baremetal-2.8.4-snap201403130855.noarch
xCAT-server-2.8.4-snap201403130854.noarch
xCAT-client-2.8.4-snap201403130854.noarch

[root@dx360m4n05 ~]# rpm -qa | grep -i openstack | sort
kernel-2.6.32-358.123.2.openstack.el6.x86_64
kernel-firmware-2.6.32-358.123.2.openstack.el6.noarch
openstack-glance-2013.2.2-2.el6.noarch
openstack-keystone-2013.2.2-1.el6.noarch
openstack-nova-2013.2.2-1.el6.noarch
openstack-nova-api-2013.2.2-1.el6.noarch
openstack-nova-cells-2013.2.2-1.el6.noarch
openstack-nova-cert-2013.2.2-1.el6.noarch
openstack-nova-common-2013.2.2-1.el6.noarch
openstack-nova-compute-2013.2.2-1.el6.noarch
openstack-nova-conductor-2013.2.2-1.el6.noarch
openstack-nova-console-2013.2.2-1.el6.noarch
openstack-nova-network-2013.2.2-1.el6.noarch
openstack-nova-novncproxy-2013.2.2-1.el6.noarch
openstack-nova-objectstore-2013.2.2-1.el6.noarch
openstack-nova-scheduler-2013.2.2-1.el6.noarch
openstack-packstack-2013.2.1-0.32.dev987.el6.noarch
openstack-selinux-0.1.3-2.el6ost.noarch
openstack-utils-2013.2-2.el6.noarch
perf-2.6.32-358.123.2.openstack.el6.x86_64
xCAT-OpenStack-baremetal-2.8.4-snap201403130855.noarch

This is the nova configuration file

[root@dx360m4n05 ~]# cat /etc/nova/nova.conf | grep -v ^# | grep -v ^$
[DEFAULT]
reserved_host_memory_mb=0
scheduler_host_manager=nova.scheduler.baremetal_host_manager.BaremetalHostManager
ram_allocation_ratio=1.0
compute_driver=xcat.openstack.baremetal.driver.xCATBareMetalDriver
my_ip = 9.114.34.243
vncserver_listen = 9.114.34.243
vncserver_proxyclient_address = 9.114.34.243
auth_strategy = keystone
rpc_backend = nova.openstack.common.rpc.impl_qpid
qpid_hostname = dx360m4n05
[hyperv]
[zookeeper]
[osapi_v3]
[conductor]
[keymgr]
[cells]
[database]
connection = mysql://nova:cluster@dx360m4n05/nova
[image_file_url]
[baremetal]
sql_connection=mysql://root:cluster@localhost/nova_bm?charset=utf8
instance_type_extra_specs=cpu_arch:x86_64
tftp_root=/tftpboot
[rpc_notifier2]
[matchmaker_redis]
[ssl]
[trusted_computing]
[upgrade_levels]
[matchmaker_ring]
[vmware]
[spice]
[keystone_authtoken]
auth_uri = http://dx360m4n05:5000
auth_host = dx360m4n05
auth_protocol = http
auth_port = 35357
admin_user = nova
admin_tenant_name = service
admin_password = cluster
[xcat]
deploy_timeout=0
deploy_checking_interval=10
reboot_timeout=0
reboot_checking_interval=5

After apply the quick-and-dirty fixing for the indent problem. There is still another problem.
https://sourceforge.net/p/xcat/bugs/4023/attachment/openstack-baremetal-driver.py.patch

The openstack-nova-compute service still can not start up. Please refer to the following log messages.

[root@dx360m4n05 ~]# tail /var/log/nova/compute.log
2014-03-17 12:57:15.913 18325 CRITICAL nova [-] unexpected indent (driver.py, line 171)
2014-03-17 12:57:22.147 18340 CRITICAL nova [-] unexpected indent (driver.py, line 171)
2014-03-17 12:57:35.070 18479 CRITICAL nova [-] unexpected indent (driver.py, line 171)
2014-03-17 12:58:13.955 18715 CRITICAL nova [-] unexpected indent (driver.py, line 171)
2014-03-17 13:07:34.592 18867 CRITICAL nova [-] __init__() takes at least 2 arguments (1 given)
2014-03-17 13:07:36.828 18881 CRITICAL nova [-] __init__() takes at least 2 arguments (1 given)
2014-03-17 13:07:56.815 18908 CRITICAL nova [-] __init__() takes at least 2 arguments (1 given)
2014-03-17 13:08:05.569 18923 CRITICAL nova [-] __init__() takes at least 2 arguments (1 given)
2014-03-17 13:12:38.591 18990 CRITICAL nova [-] __init__() takes at least 2 arguments (1 given)
2014-03-17 13:27:15.746 19163 CRITICAL nova [-] __init__() takes at least 2 arguments (1 given)

[Ling]

This is very interesting, I have compared the files with my machine. Files under these 3 directories are identical:
nova/virt
nova/virt/baremetal
/opt/xcat/lib/python/xcat/openstack/baremetal

Both machines have python 2.6.6.
Why does one complain and the other does not?

The trace file looks like this:

INFO nova.virt.driver [-] Loading compute driver 'xcat.openstack.baremetal.driver.xCATBareMetalDriver'
CRITICAL nova [-] init() takes at least 2 arguments (1 given)
TRACE nova Traceback (most recent call last):
TRACE nova File "/usr/bin/nova-compute", line 11, in <module>
TRACE nova sys.exit(main())
TRACE nova File "/usr/lib/python2.6/site-packages/nova/cmd/compute.py", line 68, in main
TRACE nova db_allowed=False)
TRACE nova File "/usr/lib/python2.6/site-packages/nova/service.py", line 257, in create
TRACE nova db_allowed=db_allowed)
TRACE nova File "/usr/lib/python2.6/site-packages/nova/service.py", line 139, in init
TRACE nova self.manager = manager_class(host=self.host, args, kwargs)
TRACE nova File "/usr/lib/python2.6/site-packages/nova/compute/manager.py", line 450, in init
TRACE nova self.driver = driver.load_compute_driver(self.virtapi, compute_driver)
TRACE nova File "/usr/lib/python2.6/site-packages/nova/virt/driver.py", line 1115, in load_compute_driver
TRACE nova virtapi)
TRACE nova File "/usr/lib/python2.6/site-packages/nova/openstack/common/importutils.py", line 54, in import_object_ns
TRACE nova return import_class(import_str)(args, kwargs)
TRACE nova File "/opt/xcat/lib/python/xcat/openstack/baremetal/driver.py", line 39, in init
TRACE nova super(xCATBareMetalDriver, self).init(virtapi)
TRACE nova File "/usr/lib/python2.6/site-packages/nova/virt/baremetal/driver.py", line 124, in init
TRACE nova default=DEFAULT_FIREWALL_DRIVER)
TRACE nova File "/usr/lib/python2.6/site-packages/nova/virt/firewall.py", line 49, in load_driver
TRACE nova return fw_class(*args, kwargs)
TRACE nova TypeError: init() takes at least 2 arguments (1 given)
TRACE nova</module>

[Ling]

The nova/virt/firewall.py has the following code to load the firewall driver:

def load_driver(default, *args, **kwargs):
fw_class = importutils.import_class(CONF.firewall_driver or default)
return fw_class(*args, **kwargs)

Some how on your cloud, the value of CONF.firewall_driver is nova.virt.libvirt.firewall.IptablesFirewallDriver even if I commented it out in /etc/nova/nova.conf.

On my cloud it is None.

So the solution is manually set
firewall_driver=nova.virt.firewall.NoopFirewallDriver
in /etc/nova/nova.conf.

I have also updated this doc: https://sourceforge.net/apps/mediawiki/xcat/index.php?title=Using_xCAT_in_OpenStack_Baremetal_Node_Deployment