x/cloudbase-init
Code Issues Proposed changes

Adds option to truncate host name to Netbios len

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In some scenarios it is necessary to limit the length
of the host name to the maximum length allowed by Netbios.

The "netbios_host_name_compatibility" option can be used to
control this behaviour.
This commit is contained in:
Alessandro Pilotti 2014-02-05 23:25:27 +02:00
parent 9752b11b85
commit 889a5f8e8c
1 changed files with 26 additions and 2 deletions
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28
cloudbaseinit/plugins/windows/sethostname.py
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@ -14,12 +14,24 @@
# License for the specific language governing permissions and limitations
# under the License.
from cloudbaseinit.openstack.common import cfg
from cloudbaseinit.openstack.common import log as logging
from cloudbaseinit.osutils import factory as osutils_factory
from cloudbaseinit.plugins import base
from cloudbaseinit.openstack.common import log as logging
opts = [
cfg.BoolOpt('netbios_host_name_compatibility', default=True,
help='Truncates the hostname to 15 characters for Netbios '
'compatibility'),
]
CONF = cfg.CONF
CONF.register_opts(opts)
LOG = logging.getLogger(__name__)
NETBIOS_HOST_NAME_MAX_LEN = 15
class SetHostNamePlugin(base.BasePlugin):
def execute(self, service, shared_data):
@ -30,7 +42,19 @@ class SetHostNamePlugin(base.BasePlugin):
osutils = osutils_factory.OSUtilsFactory().get_os_utils()
new_host_name = meta_data['hostname'].split('.', 1)[0]
metadata_host_name = meta_data['hostname'].split('.', 1)[0]
if (len(metadata_host_name) > NETBIOS_HOST_NAME_MAX_LEN and
CONF.netbios_host_name_compatibility):
new_host_name = metadata_host_name[:NETBIOS_HOST_NAME_MAX_LEN]
LOG.warn('Truncating host name for Netbios compatibility. '
'Old name: %(metadata_host_name)s, new name: '
'%(new_host_name)s' %
{'metadata_host_name': metadata_host_name,
'new_host_name': new_host_name})
else:
new_host_name = metadata_host_name
reboot_required = osutils.set_host_name(new_host_name)
return (base.PLUGIN_EXECUTION_DONE, reboot_required)