diff options
Diffstat (limited to 'cloudinit/sources/DataSourceAzure.py')
| -rwxr-xr-x | cloudinit/sources/DataSourceAzure.py | 154 |
1 files changed, 91 insertions, 63 deletions
diff --git a/cloudinit/sources/DataSourceAzure.py b/cloudinit/sources/DataSourceAzure.py index e98fd497..773c60d7 100755 --- a/cloudinit/sources/DataSourceAzure.py +++ b/cloudinit/sources/DataSourceAzure.py @@ -1387,76 +1387,104 @@ def load_azure_ds_dir(source_dir): return (md, ud, cfg, {'ovf-env.xml': contents}) -def parse_network_config(imds_metadata): +@azure_ds_telemetry_reporter +def parse_network_config(imds_metadata) -> dict: """Convert imds_metadata dictionary to network v2 configuration. - Parses network configuration from imds metadata if present or generate fallback network config excluding mlx4_core devices. @param: imds_metadata: Dict of content read from IMDS network service. @return: Dictionary containing network version 2 standard configuration. """ - with events.ReportEventStack( - name="parse_network_config", - description="", - parent=azure_ds_reporter - ) as evt: - if imds_metadata != sources.UNSET and imds_metadata: - netconfig = {'version': 2, 'ethernets': {}} - LOG.debug('Azure: generating network configuration from IMDS') - network_metadata = imds_metadata['network'] - for idx, intf in enumerate(network_metadata['interface']): - # First IPv4 and/or IPv6 address will be obtained via DHCP. - # Any additional IPs of each type will be set as static - # addresses. - nicname = 'eth{idx}'.format(idx=idx) - dhcp_override = {'route-metric': (idx + 1) * 100} - dev_config = {'dhcp4': True, 'dhcp4-overrides': dhcp_override, - 'dhcp6': False} - for addr_type in ('ipv4', 'ipv6'): - addresses = intf.get(addr_type, {}).get('ipAddress', []) - if addr_type == 'ipv4': - default_prefix = '24' - else: - default_prefix = '128' - if addresses: - dev_config['dhcp6'] = True - # non-primary interfaces should have a higher - # route-metric (cost) so default routes prefer - # primary nic due to lower route-metric value - dev_config['dhcp6-overrides'] = dhcp_override - for addr in addresses[1:]: - # Append static address config for ip > 1 - netPrefix = intf[addr_type]['subnet'][0].get( - 'prefix', default_prefix) - privateIp = addr['privateIpAddress'] - if not dev_config.get('addresses'): - dev_config['addresses'] = [] - dev_config['addresses'].append( - '{ip}/{prefix}'.format( - ip=privateIp, prefix=netPrefix)) - if dev_config: - mac = ':'.join(re.findall(r'..', intf['macAddress'])) - dev_config.update({ - 'match': {'macaddress': mac.lower()}, - 'set-name': nicname - }) - # With netvsc, we can get two interfaces that - # share the same MAC, so we need to make sure - # our match condition also contains the driver - driver = device_driver(nicname) - if driver and driver == 'hv_netvsc': - dev_config['match']['driver'] = driver - netconfig['ethernets'][nicname] = dev_config - evt.description = "network config from imds" - else: - blacklist = ['mlx4_core'] - LOG.debug('Azure: generating fallback configuration') - # generate a network config, blacklist picking mlx4_core devs - netconfig = net.generate_fallback_config( - blacklist_drivers=blacklist, config_driver=True) - evt.description = "network config from fallback" - return netconfig + if imds_metadata != sources.UNSET and imds_metadata: + try: + return _generate_network_config_from_imds_metadata(imds_metadata) + except Exception as e: + LOG.error( + 'Failed generating network config ' + 'from IMDS network metadata: %s', str(e)) + try: + return _generate_network_config_from_fallback_config() + except Exception as e: + LOG.error('Failed generating fallback network config: %s', str(e)) + return {} + + +@azure_ds_telemetry_reporter +def _generate_network_config_from_imds_metadata(imds_metadata) -> dict: + """Convert imds_metadata dictionary to network v2 configuration. + Parses network configuration from imds metadata. + + @param: imds_metadata: Dict of content read from IMDS network service. + @return: Dictionary containing network version 2 standard configuration. + """ + netconfig = {'version': 2, 'ethernets': {}} + network_metadata = imds_metadata['network'] + for idx, intf in enumerate(network_metadata['interface']): + # First IPv4 and/or IPv6 address will be obtained via DHCP. + # Any additional IPs of each type will be set as static + # addresses. + nicname = 'eth{idx}'.format(idx=idx) + dhcp_override = {'route-metric': (idx + 1) * 100} + dev_config = {'dhcp4': True, 'dhcp4-overrides': dhcp_override, + 'dhcp6': False} + for addr_type in ('ipv4', 'ipv6'): + addresses = intf.get(addr_type, {}).get('ipAddress', []) + if addr_type == 'ipv4': + default_prefix = '24' + else: + default_prefix = '128' + if addresses: + dev_config['dhcp6'] = True + # non-primary interfaces should have a higher + # route-metric (cost) so default routes prefer + # primary nic due to lower route-metric value + dev_config['dhcp6-overrides'] = dhcp_override + for addr in addresses[1:]: + # Append static address config for ip > 1 + netPrefix = intf[addr_type]['subnet'][0].get( + 'prefix', default_prefix) + privateIp = addr['privateIpAddress'] + if not dev_config.get('addresses'): + dev_config['addresses'] = [] + dev_config['addresses'].append( + '{ip}/{prefix}'.format( + ip=privateIp, prefix=netPrefix)) + if dev_config: + mac = ':'.join(re.findall(r'..', intf['macAddress'])) + dev_config.update({ + 'match': {'macaddress': mac.lower()}, + 'set-name': nicname + }) + # With netvsc, we can get two interfaces that + # share the same MAC, so we need to make sure + # our match condition also contains the driver + driver = device_driver(nicname) + if driver and driver == 'hv_netvsc': + dev_config['match']['driver'] = driver + netconfig['ethernets'][nicname] = dev_config + return netconfig + + +@azure_ds_telemetry_reporter +def _generate_network_config_from_fallback_config() -> dict: + """Generate fallback network config excluding mlx4_core & mlx5_core devices. + + @return: Dictionary containing network version 2 standard configuration. + """ + # Azure Dv4 and Ev4 series VMs always have mlx5 hardware. + # https://docs.microsoft.com/en-us/azure/virtual-machines/dv4-dsv4-series + # https://docs.microsoft.com/en-us/azure/virtual-machines/ev4-esv4-series + # Earlier D and E series VMs (such as Dv2, Dv3, and Ev3 series VMs) + # can have either mlx4 or mlx5 hardware, with the older series VMs + # having a higher chance of coming with mlx4 hardware. + # https://docs.microsoft.com/en-us/azure/virtual-machines/dv2-dsv2-series + # https://docs.microsoft.com/en-us/azure/virtual-machines/dv3-dsv3-series + # https://docs.microsoft.com/en-us/azure/virtual-machines/ev3-esv3-series + blacklist = ['mlx4_core', 'mlx5_core'] + # generate a network config, blacklist picking mlx4_core and mlx5_core devs + return net.generate_fallback_config( + blacklist_drivers=blacklist, config_driver=True) @azure_ds_telemetry_reporter |