** Changed in: maas
Status: Triaged => Invalid
** Changed in: maas
Importance: High => Undecided
** Tags removed: bug-council
--
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to cloud-init.
https://bugs.launchpad.net/bugs/2009746
Title:
dpkg-reconfigure cloud-init: yaml.load errors during MAAS deloyment of
Ubuntu 23.04(Lunar)
Status in cloud-init:
Fix Committed
Status in MAAS:
Invalid
Status in maas package in Ubuntu:
Invalid
Bug description:
Affects cloud-init 23.1.1 Lunar
MAAS deployed Ubuntu 23.04 (Lunar) machines invoke `dpkg-reconfigure
cloud-init` which results in an exit 1 with the following traceback
as seen in curtin logs:
Running command ['unshare', '--fork', '--pid', '--', 'chroot',
'/tmp/tmpwr8y_4f8/target', 'dpkg-reconfigure', '--frontend=noninteractive',
'cloud-init'] with allowed return codes [0] (capture=True)
finish: cmd-install/stage-curthooks/builtin/cmd-curthooks/writing-apt-config:
FAIL: configuring apt configuring apt
finish: cmd-install/stage-curthooks/builtin/cmd-curthooks: FAIL: curtin
command curthooks
Traceback (most recent call last):
File "/curtin/curtin/commands/main.py", line 202, in main
ret = args.func(args)
^^^^^^^^^^^^^^^
File "/curtin/curtin/commands/curthooks.py", line 1886, in curthooks
builtin_curthooks(cfg, target, state)
File "/curtin/curtin/commands/curthooks.py", line 1692, in builtin_curthooks
do_apt_config(cfg, target)
File "/curtin/curtin/commands/curthooks.py", line 97, in do_apt_config
apt_config.handle_apt(apt_cfg, target)
File "/curtin/curtin/commands/apt_config.py", line 73, in handle_apt
apply_debconf_selections(cfg, target)
File "/curtin/curtin/commands/apt_config.py", line 167, in
apply_debconf_selections
dpkg_reconfigure(need_reconfig, target=target)
File "/curtin/curtin/commands/apt_config.py", line 133, in dpkg_reconfigure
util.subp(['dpkg-reconfigure', '--frontend=noninteractive'] +
File "/curtin/curtin/util.py", line 275, in subp
return _subp(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^
File "/curtin/curtin/util.py", line 139, in _subp
raise ProcessExecutionError(stdout=out, stderr=err,
curtin.util.ProcessExecutionError: Unexpected error while running command.
Command: ['unshare', '--fork', '--pid', '--', 'chroot',
'/tmp/tmpwr8y_4f8/target', 'dpkg-reconfigure', '--frontend=noninteractive',
'cloud-init']
Exit code: 1
Reason: -
Stdout: ''
Stderr: Traceback (most recent call last):
File "<string>", line 23, in <module>
TypeError: load() missing 1 required positional argument: 'Loader'
Ubuntu 23.04 Lunar has published PyYAML 6.0.1[1] which finally changed the
signature on yaml.load to require a Loader= parameter.
This traceback is due to a stale call to yaml.load() in
cloud-init.postinst[2] that should have migrated to yaml.safe_load.
In Jammy and and earlier, PyYAML was still emitting deprecation
warning messages to stderr, but those warnings are silenced
automatically by any invocation to `dpkg-reconfigure
--frontend=noninteractive cloud-init`. So none of the warnings showed
up in curtin or MAAS, until we got an explicit non-zero exit code.
References:
[1] Pyyaml 6.0.1 commit sync'd to lunar
https://git.launchpad.net/ubuntu/+source/pyyaml/commit/?id=5308dbefbe5dc7ce4a19adbfdb4c4e08a798217d
[2] yaml.load failure on Lunar:
https://github.com/canonical/cloud-init/blob/ubuntu/devel/debian/cloud-init.postinst#L41
To manage notifications about this bug go to:
https://bugs.launchpad.net/cloud-init/+bug/2009746/+subscriptions
--
Mailing list: https://launchpad.net/~yahoo-eng-team
Post to : yahoo-eng-team@lists.launchpad.net
Unsubscribe : https://launchpad.net/~yahoo-eng-team
More help : https://help.launchpad.net/ListHelp
