The cloud-init yaml errors are a problem also on lxd, I've created bug #2131809.
Could reproduce the autopkgtest image dpkg error in a fresh resolute container from just now (without local changes) with the following steps on questing: % lxc init -c security.nesting=true ubuntu-daily:26.04 autopkgtest-test % lxc start autopkgtest-test % cat > locale.gen <<eof en_US.UTF-8 UTF-8 de_DE.UTF-8 UTF-8 en_DK.UTF-8 UTF-8 eof % lxc file push locale.gen autopkgtest-test//etc/ % lxc exec openldap-ppm-test -- locale-gen % lxc exec openldap-ppm-test -- timedatectl set-timezone Europe/Berlin % lxc exec openldap-ppm-test -- sudo.ws -i -u ubuntu container: % apt install autopkgtest qemu-system-x86 genisoimage container: % autopkgtest-buildvm-ubuntu-cloud -v -a amd64 -r resolute -s 10G << yaml errors from bug #2131809 >> 59.721266] cloud-init[258]: 2025-11-18 15:36:04,898 - util.py[WARNING]: Failed loading yaml blob. Yaml load allows (<class 'dict'>,) root types, but got str instead [ 60.960550] cloud-init[258]: 2025-11-18 15:36:06,131 - util.py[WARNING]: Failed loading yaml blob. Yaml load allows (<class 'dict'>,) root types, but got str instead [ 61.493800] cloud-init[258]: 2025-11-18 15:36:06,672 - schema.py[WARNING]: cloud-config failed schema validation! You may run 'sudo cloud-init schema --system' to check the details. << dpkg errors >> [ 62.135399] cloud-init[258]: dpkg: error: --add-architecture takes exactly one argument [ 62.140489] cloud-init[258]: Type dpkg --help for help about installing and deinstalling packages [*]; [ 62.145879] cloud-init[258]: Use 'apt' or 'aptitude' for user-friendly package management; [ 62.150762] cloud-init[258]: Type dpkg -Dhelp for a list of dpkg debug flag values; [ 62.156802] cloud-init[258]: Type dpkg --force-help for a list of forcing options; [ 62.161672] cloud-init[258]: Type dpkg-deb --help for help about manipulating *.deb files; [ 62.169566] cloud-init[258]: Options marked [*] produce a lot of output - pipe it through 'less' or 'more' ! [ OK ] Finished cloud-init-network.service - Cloud-init: Network Stage. [...] the script continues to run, though, and in the end it produces an img (it did so also for my initial report). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2131431 Title: qemu image cloud-init yaml validation fails, dpkg architecture error To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/autopkgtest/+bug/2131431/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
