def _ensure_netfailover_safe(network_config):
"""
Search network config physical interfaces to see if any of them are
a netfailover master. If found, we prevent matching by MAC as the other
failover devices have the same MAC but need to be ignored.
Note: we rely on cloudinit.net changes which prevent netfailover devices
from being present in the provided network config. For more details about
netfailover devices, refer to cloudinit.net module.
:param network_config
A v1 or v2 network config dict with the primary NIC, and possibly
secondary nic configured. This dict will be mutated.
"""
# ignore anything that's not an actual network-config
if "version" not in network_config:
return
if network_config["version"] not in [1, 2]:
LOG.debug(
"Ignoring unknown network config version: %s",
network_config["version"],
)
return
mac_to_name = get_interfaces_by_mac()
if network_config["version"] == 1:
for cfg in [c for c in network_config["config"] if "type" in c]:
if cfg["type"] == "physical":
if "mac_address" in cfg:
mac = cfg["mac_address"]
cur_name = mac_to_name.get(mac)
if not cur_name:
continue
elif is_netfail_master(cur_name):
del cfg["mac_address"]
elif network_config["version"] == 2:
for _, cfg in network_config.get("ethernets", {}).items():
if "match" in cfg:
macaddr = cfg.get("match", {}).get("macaddress")
if macaddr:
cur_name = mac_to_name.get(macaddr)
if not cur_name:
continue
elif is_netfail_master(cur_name):
del cfg["match"]["macaddress"]
del cfg["set-name"]
cfg["match"]["name"] = cur_name
def is_netfail_master(self, devname: DeviceName) -> bool:
return net.is_netfail_master(devname)