def _dhcp_option_file_or_url(task, urlboot=False, ip_version=None):
"""Returns the appropriate file or URL.
:param task: A TaskManager object.
:param url_boot: Boolean value default False to indicate if a
URL should be returned to the file as opposed
to a file.
:param ip_version: Integer representing the version of IP of
to return options for DHCP. Possible options
are 4, and 6.
"""
try:
if task.driver.boot.ipxe_enabled:
boot_file = deploy_utils.get_ipxe_boot_file(task.node)
else:
boot_file = deploy_utils.get_pxe_boot_file(task.node)
except AttributeError:
# Support boot interfaces that lack an explicit ipxe_enabled
# attribute flag.
boot_file = deploy_utils.get_pxe_boot_file(task.node)
# NOTE(TheJulia): There are additional cases as we add new
# features, so the logic below is in the form of if/elif/elif
if not urlboot:
return boot_file
elif urlboot:
if CONF.my_ipv6 and ip_version == 6:
host = utils.wrap_ipv6(CONF.my_ipv6)
else:
host = utils.wrap_ipv6(CONF.pxe.tftp_server)
return "tftp://{host}/{boot_file}".format(host=host,
boot_file=boot_file)
def get_socat_console_url(port):
"""Get a URL to access the console via socat.
:param port: the terminal port (integer) for the node
:return: an access URL to the socat console of the node
"""
console_host = utils.wrap_ipv6(CONF.console.socat_address)
return 'tcp://%(host)s:%(port)s' % {'host': console_host, 'port': port}
def discovery(portal_address, portal_port):
"""Do iSCSI discovery on portal."""
utils.execute('iscsiadm',
'-m', 'discovery',
'-t', 'st',
'-p', '%s:%s' % (utils.wrap_ipv6(portal_address),
portal_port),
run_as_root=True,
check_exit_code=[0],
attempts=5,
delay_on_retry=True)
def logout_iscsi(portal_address, portal_port, target_iqn):
"""Logout from an iSCSI target."""
utils.execute('iscsiadm',
'-m', 'node',
'-p', '%s:%s' % (utils.wrap_ipv6(portal_address),
portal_port),
'-T', target_iqn,
'--logout',
run_as_root=True,
check_exit_code=[0],
attempts=5,
delay_on_retry=True)
def get_shellinabox_console_url(port):
"""Get a url to access the console via shellinaboxd.
:param port: the terminal port for the node.
"""
console_host = utils.wrap_ipv6(CONF.my_ip)
scheme = 'https' if CONF.console.terminal_cert_dir else 'http'
return '%(scheme)s://%(host)s:%(port)s' % {
'scheme': scheme,
'host': console_host,
'port': port
}
def delete_iscsi(portal_address, portal_port, target_iqn):
"""Delete the iSCSI target."""
# Retry delete until it succeeds (exit code 0) or until there is
# no longer a target to delete (exit code 21).
utils.execute('iscsiadm',
'-m', 'node',
'-p', '%s:%s' % (utils.wrap_ipv6(portal_address),
portal_port),
'-T', target_iqn,
'-o', 'delete',
run_as_root=True,
check_exit_code=[0, 21],
attempts=5,
delay_on_retry=True)
def _dhcp_option_file_or_url(task, urlboot=False):
"""Returns the appropriate file or URL.
:param task: A TaskManager object.
:param url_boot: Boolean value default False to indicate if a
URL should be returned to the file as opposed
to a file.
"""
boot_file = deploy_utils.get_pxe_boot_file(task.node)
# NOTE(TheJulia): There are additional cases as we add new
# features, so the logic below is in the form of if/elif/elif
if not urlboot:
return boot_file
elif urlboot:
host = utils.wrap_ipv6(CONF.pxe.tftp_server)
return "tftp://{host}/{boot_file}".format(host=host,
boot_file=boot_file)
def login_iscsi(portal_address, portal_port, target_iqn):
"""Login to an iSCSI target."""
utils.execute('iscsiadm',
'-m',
'node',
'-p',
'%s:%s' % (utils.wrap_ipv6(portal_address), portal_port),
'-T',
target_iqn,
'--login',
run_as_root=True,
check_exit_code=[0],
attempts=5,
delay_on_retry=True)
error_occurred = False
try:
# Ensure the login complete
verify_iscsi_connection(target_iqn)
# force iSCSI initiator to re-read luns
force_iscsi_lun_update(target_iqn)
# ensure file system sees the block device
check_file_system_for_iscsi_device(portal_address, portal_port,
target_iqn)
except (exception.InstanceDeployFailure,
processutils.ProcessExecutionError) as e:
with excutils.save_and_reraise_exception():
error_occurred = True
LOG.error("Failed to login to an iSCSI target due to %s", e)
finally:
if error_occurred:
try:
logout_iscsi(portal_address, portal_port, target_iqn)
delete_iscsi(portal_address, portal_port, target_iqn)
except processutils.ProcessExecutionError as e:
LOG.warning(
"An error occurred when trying to cleanup "
"failed ISCSI session error %s", e)
