openstack/ironic
Code Issues Proposed changes

Change pxe dhcp options name to codes.

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There is difference between dhcp option names in different backends.
This patch changes options name to code according to [0].

[0] https://www.iana.org/assignments/bootp-dhcp-parameters/bootp-dhcp-parameters.xhtml

Closes-Bug: 1717236

Change-Id: Idbc2f7496d10d92d8dc481eb4173ed1c6f35d412
This commit is contained in:
Andrey Shestakov 2017-08-31 13:55:33 +03:00 committed by Vasyl Saienko
parent a4d23f3230
commit c377f5cbbd
3 changed files with 31 additions and 19 deletions
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23
ironic/common/pxe_utils.py
View File

@ -33,6 +33,12 @@ LOG = logging.getLogger(__name__)
PXE_CFG_DIR_NAME = 'pxelinux.cfg'
DHCP_TFTP_SERVER_NAME = '66' # rfc2132
DHCP_BOOTFILE_NAME = '67' # rfc2132
DHCP_TFTP_SERVER_ADDRESS = '150' # rfc5859
DHCP_IPXE_ENCAP_OPTS = '175' # Tentatively Assigned
DHCP_TFTP_PATH_PREFIX = '210' # rfc5071
def get_root_dir():
"""Returns the directory where the config files and images will live."""
@ -317,30 +323,31 @@ def dhcp_options_for_instance(task):
if dhcp_provider_name == 'neutron':
# Neutron use dnsmasq as default DHCP agent, add extra config
# to neutron "dhcp-match=set:ipxe,175" and use below option
dhcp_opts.append({'opt_name': 'tag:!ipxe,bootfile-name',
dhcp_opts.append({'opt_name': "tag:!ipxe,%s" % DHCP_BOOTFILE_NAME,
'opt_value': boot_file})
dhcp_opts.append({'opt_name': 'tag:ipxe,bootfile-name',
dhcp_opts.append({'opt_name': "tag:ipxe,%s" % DHCP_BOOTFILE_NAME,
'opt_value': ipxe_script_url})
else:
# !175 == non-iPXE.
# http://ipxe.org/howto/dhcpd#ipxe-specific_options
dhcp_opts.append({'opt_name': '!175,bootfile-name',
dhcp_opts.append({'opt_name': "!%s,%s" % (DHCP_IPXE_ENCAP_OPTS,
DHCP_BOOTFILE_NAME),
'opt_value': boot_file})
dhcp_opts.append({'opt_name': 'bootfile-name',
dhcp_opts.append({'opt_name': DHCP_BOOTFILE_NAME,
'opt_value': ipxe_script_url})
else:
dhcp_opts.append({'opt_name': 'bootfile-name',
dhcp_opts.append({'opt_name': DHCP_BOOTFILE_NAME,
'opt_value': boot_file})
# 210 == tftp server path-prefix or tftp root, will be used to find
# pxelinux.cfg directory. The pxelinux.0 loader infers this information
# from it's own path, but Petitboot needs it to be specified by this
# option since it doesn't use pxelinux.0 loader.
dhcp_opts.append({'opt_name': '210',
dhcp_opts.append({'opt_name': DHCP_TFTP_PATH_PREFIX,
'opt_value': get_tftp_path_prefix()})
dhcp_opts.append({'opt_name': 'server-ip-address',
dhcp_opts.append({'opt_name': DHCP_TFTP_SERVER_NAME,
'opt_value': CONF.pxe.tftp_server})
dhcp_opts.append({'opt_name': 'tftp-server',
dhcp_opts.append({'opt_name': DHCP_TFTP_SERVER_ADDRESS,
'opt_value': CONF.pxe.tftp_server})
# Append the IP version for all the configuration options

22
ironic/tests/unit/common/test_pxe_utils.py
View File

@ -621,16 +621,16 @@ class TestPXEUtils(db_base.DbTestCase):
self.config(tftp_server='192.0.2.1', group='pxe')
self.config(pxe_bootfile_name='fake-bootfile', group='pxe')
self.config(tftp_root='/tftp-path/', group='pxe')
expected_info = [{'opt_name': 'bootfile-name',
expected_info = [{'opt_name': '67',
'opt_value': 'fake-bootfile',
'ip_version': ip_version},
{'opt_name': '210',
'opt_value': '/tftp-path/',
'ip_version': ip_version},
{'opt_name': 'server-ip-address',
{'opt_name': '66',
'opt_value': '192.0.2.1',
'ip_version': ip_version},
{'opt_name': 'tftp-server',
{'opt_name': '150',
'opt_value': '192.0.2.1',
'ip_version': ip_version},
]
@ -689,16 +689,16 @@ class TestPXEUtils(db_base.DbTestCase):
self.config(dhcp_provider='isc', group='dhcp')
expected_boot_script_url = 'http://192.0.3.2:1234/boot.ipxe'
expected_info = [{'opt_name': '!175,bootfile-name',
expected_info = [{'opt_name': '!175,67',
'opt_value': boot_file,
'ip_version': 4},
{'opt_name': 'server-ip-address',
{'opt_name': '66',
'opt_value': '192.0.2.1',
'ip_version': 4},
{'opt_name': 'tftp-server',
{'opt_name': '150',
'opt_value': '192.0.2.1',
'ip_version': 4},
{'opt_name': 'bootfile-name',
{'opt_name': '67',
'opt_value': expected_boot_script_url,
'ip_version': 4}]
@ -707,16 +707,16 @@ class TestPXEUtils(db_base.DbTestCase):
self.config(dhcp_provider='neutron', group='dhcp')
expected_boot_script_url = 'http://192.0.3.2:1234/boot.ipxe'
expected_info = [{'opt_name': 'tag:!ipxe,bootfile-name',
expected_info = [{'opt_name': 'tag:!ipxe,67',
'opt_value': boot_file,
'ip_version': 4},
{'opt_name': 'server-ip-address',
{'opt_name': '66',
'opt_value': '192.0.2.1',
'ip_version': 4},
{'opt_name': 'tftp-server',
{'opt_name': '150',
'opt_value': '192.0.2.1',
'ip_version': 4},
{'opt_name': 'tag:ipxe,bootfile-name',
{'opt_name': 'tag:ipxe,67',
'opt_value': expected_boot_script_url,
'ip_version': 4}]

5
releasenotes/notes/use-dhcp-option-numbers-8b0b0efae912ff5f.yaml Normal file
View File

@ -0,0 +1,5 @@
---
fixes:
- |
Fixes compatibility with Neutron DHCP backends other than dnsmasq by using
standard DHCP option codes instead of dnsmasq-specific option names.