diff options
Diffstat (limited to 'cloudinit/sources/helpers/upcloud.py')
| -rw-r--r-- | cloudinit/sources/helpers/upcloud.py | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/cloudinit/sources/helpers/upcloud.py b/cloudinit/sources/helpers/upcloud.py new file mode 100644 index 00000000..199baa58 --- /dev/null +++ b/cloudinit/sources/helpers/upcloud.py @@ -0,0 +1,231 @@ +# Author: Antti Myyrä <antti.myyra@upcloud.com> +# +# This file is part of cloud-init. See LICENSE file for license information. + +import json + +from cloudinit import dmi +from cloudinit import log as logging +from cloudinit import net as cloudnet +from cloudinit import url_helper + +LOG = logging.getLogger(__name__) + + +def convert_to_network_config_v1(config): + """ + Convert the UpCloud network metadata description into + Cloud-init's version 1 netconfig format. + + Example JSON: + { + "interfaces": [ + { + "index": 1, + "ip_addresses": [ + { + "address": "94.237.105.53", + "dhcp": true, + "dns": [ + "94.237.127.9", + "94.237.40.9" + ], + "family": "IPv4", + "floating": false, + "gateway": "94.237.104.1", + "network": "94.237.104.0/22" + }, + { + "address": "94.237.105.50", + "dhcp": false, + "dns": [], + "family": "IPv4", + "floating": true, + "gateway": "", + "network": "94.237.105.50/32" + } + ], + "mac": "32:d5:ba:4a:36:e7", + "network_id": "031457f4-0f8c-483c-96f2-eccede02909c", + "type": "public" + }, + { + "index": 2, + "ip_addresses": [ + { + "address": "10.6.3.27", + "dhcp": true, + "dns": [], + "family": "IPv4", + "floating": false, + "gateway": "10.6.0.1", + "network": "10.6.0.0/22" + } + ], + "mac": "32:d5:ba:4a:84:cc", + "network_id": "03d82553-5bea-4132-b29a-e1cf67ec2dd1", + "type": "utility" + }, + { + "index": 3, + "ip_addresses": [ + { + "address": "2a04:3545:1000:720:38d6:baff:fe4a:63e7", + "dhcp": true, + "dns": [ + "2a04:3540:53::1", + "2a04:3544:53::1" + ], + "family": "IPv6", + "floating": false, + "gateway": "2a04:3545:1000:720::1", + "network": "2a04:3545:1000:720::/64" + } + ], + "mac": "32:d5:ba:4a:63:e7", + "network_id": "03000000-0000-4000-8046-000000000000", + "type": "public" + }, + { + "index": 4, + "ip_addresses": [ + { + "address": "172.30.1.10", + "dhcp": true, + "dns": [], + "family": "IPv4", + "floating": false, + "gateway": "172.30.1.1", + "network": "172.30.1.0/24" + } + ], + "mac": "32:d5:ba:4a:8a:e1", + "network_id": "035a0a4a-77b4-4de5-820d-189fc8135714", + "type": "private" + } + ], + "dns": [ + "94.237.127.9", + "94.237.40.9" + ] + } + """ + + def _get_subnet_config(ip_addr, dns): + if ip_addr.get("dhcp"): + dhcp_type = "dhcp" + if ip_addr.get("family") == "IPv6": + # UpCloud currently passes IPv6 addresses via + # StateLess Address Auto Configuration (SLAAC) + dhcp_type = "ipv6_dhcpv6-stateless" + return {"type": dhcp_type} + + static_type = "static" + if ip_addr.get("family") == "IPv6": + static_type = "static6" + subpart = { + "type": static_type, + "control": "auto", + "address": ip_addr.get("address"), + } + + if ip_addr.get("gateway"): + subpart["gateway"] = ip_addr.get("gateway") + + if "/" in ip_addr.get("network"): + subpart["netmask"] = ip_addr.get("network").split("/")[1] + + if dns != ip_addr.get("dns") and ip_addr.get("dns"): + subpart["dns_nameservers"] = ip_addr.get("dns") + + return subpart + + nic_configs = [] + macs_to_interfaces = cloudnet.get_interfaces_by_mac() + LOG.debug("NIC mapping: %s", macs_to_interfaces) + + for raw_iface in config.get("interfaces"): + LOG.debug("Considering %s", raw_iface) + + mac_address = raw_iface.get("mac") + if mac_address not in macs_to_interfaces: + raise RuntimeError( + "Did not find network interface on system " + "with mac '%s'. Cannot apply configuration: %s" + % (mac_address, raw_iface) + ) + + iface_type = raw_iface.get("type") + sysfs_name = macs_to_interfaces.get(mac_address) + + LOG.debug( + "Found %s interface '%s' with address '%s' (index %d)", + iface_type, + sysfs_name, + mac_address, + raw_iface.get("index"), + ) + + interface = { + "type": "physical", + "name": sysfs_name, + "mac_address": mac_address + } + + subnets = [] + for ip_address in raw_iface.get("ip_addresses"): + sub_part = _get_subnet_config(ip_address, config.get("dns")) + subnets.append(sub_part) + + interface["subnets"] = subnets + nic_configs.append(interface) + + if config.get("dns"): + LOG.debug("Setting DNS nameservers to %s", config.get("dns")) + nic_configs.append({ + "type": "nameserver", + "address": config.get("dns") + }) + + return {"version": 1, "config": nic_configs} + + +def convert_network_config(config): + return convert_to_network_config_v1(config) + + +def read_metadata(url, timeout=2, sec_between=2, retries=30): + response = url_helper.readurl( + url, timeout=timeout, sec_between=sec_between, retries=retries + ) + if not response.ok(): + raise RuntimeError("unable to read metadata at %s" % url) + return json.loads(response.contents.decode()) + + +def read_sysinfo(): + # UpCloud embeds vendor ID and server UUID in the + # SMBIOS information + + # Detect if we are on UpCloud and return the UUID + + vendor_name = dmi.read_dmi_data("system-manufacturer") + if vendor_name != "UpCloud": + return False, None + + server_uuid = dmi.read_dmi_data("system-uuid") + if server_uuid: + LOG.debug( + "system identified via SMBIOS as UpCloud server: %s", + server_uuid + ) + else: + msg = ( + "system identified via SMBIOS as a UpCloud server, but " + "did not provide an ID. Please contact support via" + "https://hub.upcloud.com or via email with support@upcloud.com" + ) + LOG.critical(msg) + raise RuntimeError(msg) + + return True, server_uuid |