diff options
Diffstat (limited to 'cloudinit/sources')
| -rwxr-xr-x | cloudinit/sources/DataSourceAzure.py | 246 |
1 files changed, 120 insertions, 126 deletions
diff --git a/cloudinit/sources/DataSourceAzure.py b/cloudinit/sources/DataSourceAzure.py index dcdf9f8f..2e7bfbe3 100755 --- a/cloudinit/sources/DataSourceAzure.py +++ b/cloudinit/sources/DataSourceAzure.py @@ -76,7 +76,7 @@ REPROVISION_NIC_ATTACH_MARKER_FILE = "/var/lib/cloud/data/wait_for_nic_attach" REPROVISION_NIC_DETACHED_MARKER_FILE = "/var/lib/cloud/data/nic_detached" REPORTED_READY_MARKER_FILE = "/var/lib/cloud/data/reported_ready" AGENT_SEED_DIR = '/var/lib/waagent' - +DEFAULT_PROVISIONING_ISO_DEV = '/dev/sr0' # In the event where the IMDS primary server is not # available, it takes 1s to fallback to the secondary one @@ -428,148 +428,142 @@ class DataSourceAzure(sources.DataSource): # it determines the value of ret. More specifically, the first one in # the candidate list determines the path to take in order to get the # metadata we need. - candidates = [self.seed_dir] + reprovision = False + ovf_is_accessible = True + reprovision_after_nic_attach = False + metadata_source = None + ret = None if os.path.isfile(REPROVISION_MARKER_FILE): - candidates.insert(0, "IMDS") + reprovision = True + metadata_source = "IMDS" report_diagnostic_event("Reprovision marker file already present " "before crawling Azure metadata: %s" % REPROVISION_MARKER_FILE, logger_func=LOG.debug) elif os.path.isfile(REPROVISION_NIC_ATTACH_MARKER_FILE): - candidates.insert(0, "NIC_ATTACH_MARKER_PRESENT") + reprovision_after_nic_attach = True + metadata_source = "NIC_ATTACH_MARKER_PRESENT" report_diagnostic_event("Reprovision nic attach marker file " "already present before crawling Azure " "metadata: %s" % REPROVISION_NIC_ATTACH_MARKER_FILE, logger_func=LOG.debug) - candidates.extend(list_possible_azure_ds_devs()) - if ddir: - candidates.append(ddir) - - found = None - reprovision = False - ovf_is_accessible = True - reprovision_after_nic_attach = False - for cdev in candidates: - try: - LOG.debug("cdev: %s", cdev) - if cdev == "IMDS": - ret = None - reprovision = True - elif cdev == "NIC_ATTACH_MARKER_PRESENT": - ret = None - reprovision_after_nic_attach = True - elif cdev.startswith("/dev/"): - if util.is_FreeBSD(): - ret = util.mount_cb(cdev, load_azure_ds_dir, - mtype="udf") + else: + for src in list_possible_azure_ds(self.seed_dir, ddir): + try: + if src.startswith("/dev/"): + if util.is_FreeBSD(): + ret = util.mount_cb(src, load_azure_ds_dir, + mtype="udf") + else: + ret = util.mount_cb(src, load_azure_ds_dir) + # save the device for ejection later + self.iso_dev = src + ovf_is_accessible = True else: - ret = util.mount_cb(cdev, load_azure_ds_dir) - else: - ret = load_azure_ds_dir(cdev) - - except NonAzureDataSource: - report_diagnostic_event( - "Did not find Azure data source in %s" % cdev, - logger_func=LOG.debug) - continue - except BrokenAzureDataSource as exc: - msg = 'BrokenAzureDataSource: %s' % exc - report_diagnostic_event(msg, logger_func=LOG.error) - raise sources.InvalidMetaDataException(msg) - except util.MountFailedError: - report_diagnostic_event( - '%s was not mountable' % cdev, logger_func=LOG.debug) - cdev = 'IMDS' - ovf_is_accessible = False - empty_md = {'local-hostname': ''} - empty_cfg = dict( - system_info=dict( - default_user=dict( - name='' + ret = load_azure_ds_dir(src) + metadata_source = src + break + except NonAzureDataSource: + report_diagnostic_event( + "Did not find Azure data source in %s" % src, + logger_func=LOG.debug) + continue + except util.MountFailedError: + report_diagnostic_event( + '%s was not mountable' % src, + logger_func=LOG.debug) + ovf_is_accessible = False + empty_md = {'local-hostname': ''} + empty_cfg = dict( + system_info=dict( + default_user=dict( + name='' + ) ) ) - ) - ret = (empty_md, '', empty_cfg, {}) - - report_diagnostic_event("Found provisioning metadata in %s" % cdev, - logger_func=LOG.debug) - - # save the iso device for ejection before reporting ready - if cdev.startswith("/dev"): - self.iso_dev = cdev - - perform_reprovision = reprovision or self._should_reprovision(ret) - perform_reprovision_after_nic_attach = ( - reprovision_after_nic_attach or - self._should_reprovision_after_nic_attach(ret)) - - if perform_reprovision or perform_reprovision_after_nic_attach: - if util.is_FreeBSD(): - msg = "Free BSD is not supported for PPS VMs" + ret = (empty_md, '', empty_cfg, {}) + metadata_source = 'IMDS' + continue + except BrokenAzureDataSource as exc: + msg = 'BrokenAzureDataSource: %s' % exc report_diagnostic_event(msg, logger_func=LOG.error) raise sources.InvalidMetaDataException(msg) - if perform_reprovision_after_nic_attach: - self._wait_for_all_nics_ready() - ret = self._reprovision() - imds_md = self.get_imds_data_with_api_fallback( - self.fallback_interface, - retries=10 - ) - if not imds_md and not ovf_is_accessible: - msg = 'No OVF or IMDS available' - report_diagnostic_event(msg) + report_diagnostic_event( + "Found provisioning metadata in %s" % metadata_source, + logger_func=LOG.debug) + + perform_reprovision = reprovision or self._should_reprovision(ret) + perform_reprovision_after_nic_attach = ( + reprovision_after_nic_attach or + self._should_reprovision_after_nic_attach(ret)) + + if perform_reprovision or perform_reprovision_after_nic_attach: + if util.is_FreeBSD(): + msg = "Free BSD is not supported for PPS VMs" + report_diagnostic_event(msg, logger_func=LOG.error) raise sources.InvalidMetaDataException(msg) - (md, userdata_raw, cfg, files) = ret - self.seed = cdev - crawled_data.update({ - 'cfg': cfg, - 'files': files, - 'metadata': util.mergemanydict( - [md, {'imds': imds_md}]), - 'userdata_raw': userdata_raw}) - imds_username = _username_from_imds(imds_md) - imds_hostname = _hostname_from_imds(imds_md) - imds_disable_password = _disable_password_from_imds(imds_md) - if imds_username: - LOG.debug('Username retrieved from IMDS: %s', imds_username) - cfg['system_info']['default_user']['name'] = imds_username - if imds_hostname: - LOG.debug('Hostname retrieved from IMDS: %s', imds_hostname) - crawled_data['metadata']['local-hostname'] = imds_hostname - if imds_disable_password: - LOG.debug( - 'Disable password retrieved from IMDS: %s', - imds_disable_password - ) - crawled_data['metadata']['disable_password'] = imds_disable_password # noqa: E501 - - # only use userdata from imds if OVF did not provide custom data - # userdata provided by IMDS is always base64 encoded - if not userdata_raw: - imds_userdata = _userdata_from_imds(imds_md) - if imds_userdata: - LOG.debug("Retrieved userdata from IMDS") - try: - crawled_data['userdata_raw'] = base64.b64decode( - ''.join(imds_userdata.split())) - except Exception: - report_diagnostic_event( - "Bad userdata in IMDS", - logger_func=LOG.warning) - found = cdev + if perform_reprovision_after_nic_attach: + self._wait_for_all_nics_ready() + ret = self._reprovision() - report_diagnostic_event( - 'found datasource in %s' % cdev, logger_func=LOG.debug) - break + imds_md = self.get_imds_data_with_api_fallback( + self.fallback_interface, + retries=10 + ) + if not imds_md and not ovf_is_accessible: + msg = 'No OVF or IMDS available' + report_diagnostic_event(msg) + raise sources.InvalidMetaDataException(msg) + (md, userdata_raw, cfg, files) = ret + self.seed = metadata_source + crawled_data.update({ + 'cfg': cfg, + 'files': files, + 'metadata': util.mergemanydict( + [md, {'imds': imds_md}]), + 'userdata_raw': userdata_raw}) + imds_username = _username_from_imds(imds_md) + imds_hostname = _hostname_from_imds(imds_md) + imds_disable_password = _disable_password_from_imds(imds_md) + if imds_username: + LOG.debug('Username retrieved from IMDS: %s', imds_username) + cfg['system_info']['default_user']['name'] = imds_username + if imds_hostname: + LOG.debug('Hostname retrieved from IMDS: %s', imds_hostname) + crawled_data['metadata']['local-hostname'] = imds_hostname + if imds_disable_password: + LOG.debug( + 'Disable password retrieved from IMDS: %s', + imds_disable_password + ) + crawled_data['metadata']['disable_password'] = imds_disable_password # noqa: E501 + + # only use userdata from imds if OVF did not provide custom data + # userdata provided by IMDS is always base64 encoded + if not userdata_raw: + imds_userdata = _userdata_from_imds(imds_md) + if imds_userdata: + LOG.debug("Retrieved userdata from IMDS") + try: + crawled_data['userdata_raw'] = base64.b64decode( + ''.join(imds_userdata.split())) + except Exception: + report_diagnostic_event( + "Bad userdata in IMDS", + logger_func=LOG.warning) - if not found: + if not metadata_source: msg = 'No Azure metadata found' report_diagnostic_event(msg, logger_func=LOG.error) raise sources.InvalidMetaDataException(msg) + else: + report_diagnostic_event( + 'found datasource in %s' % metadata_source, + logger_func=LOG.debug) - if found == ddir: + if metadata_source == ddir: report_diagnostic_event( "using files cached in %s" % ddir, logger_func=LOG.debug) @@ -2084,18 +2078,18 @@ def _get_random_seed(source=PLATFORM_ENTROPY_SOURCE): @azure_ds_telemetry_reporter -def list_possible_azure_ds_devs(): - devlist = [] +def list_possible_azure_ds(seed, cache_dir): + yield seed + yield DEFAULT_PROVISIONING_ISO_DEV if util.is_FreeBSD(): cdrom_dev = "/dev/cd0" if _check_freebsd_cdrom(cdrom_dev): - return [cdrom_dev] + yield cdrom_dev else: for fstype in ("iso9660", "udf"): - devlist.extend(util.find_devs_with("TYPE=%s" % fstype)) - - devlist.sort(reverse=True) - return devlist + yield from util.find_devs_with("TYPE=%s" % fstype) + if cache_dir: + yield cache_dir @azure_ds_telemetry_reporter |