This bug is believed to be fixed in cloud-init in 17.1. If this is still a problem for you, please make a comment and set the state back to New
Thank you. ** Changed in: cloud-init Status: Fix Committed => Fix Released -- 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/1701325 Title: attempt to read dmi data can cause warning and stacktrace in logs in a container. Status in cloud-init: Fix Released Status in cloud-init package in Ubuntu: Fix Released Status in cloud-init source package in Xenial: Fix Released Status in cloud-init source package in Zesty: Fix Released Bug description: === Begin SRU Template === [Impact] lxc containers would show warnings in /var/log/cloud-init.log. This was because attempts were made to read dmi information from inside the (unpriviledged) container. Such attempts to read dmi data like /sys/class/dmi/id/product_serial would then result in an attempt to run dmidecode which would also fail. [Test Case] To test this, simply a.) create an lxd instance from a image with -proposed version of cloud-init $ release=xenial $ ref=$release-1701325 $ lxc-proposed-snapshot --proposed --publish $release $ref $ lxc launch $ref $name b.) lxc exec $name -- grep WARN /var/log/cloud-init.log [Regression Potential] A regression caused by this change is possible on some system where systemd identified the system as a container but the container platform provided simulated/virtualized dmi information in /sys/class/dmi/id. The check for for container is done with: systemd-detect-virt --quite --container [Other Info] Upstream commit at https://git.launchpad.net/cloud-init/commit/?id=4d9f24f5c3 This was actually a regression of the upstream fix for bug 1691772. That never entered a stable Ubuntu release. The testing here is actually a test against regression. The upstream commit for that change is at https://git.launchpad.net/cloud-init/commit/?id=802e7cb2da lxc-proposed-snapshot is https://git.launchpad.net/~smoser/cloud-init/+git/sru-info/tree/bin/lxc-proposed-snapshot It publishes an image to lxd with proposed enabled and cloud-init upgraded. === End SRU Template === I launched an instance of artful. Looked in /var/log/cloud-init.log and saw: 2017-06-29 16:00:15,222 - util.py[DEBUG]: Reading from /sys/class/dmi/id/product_serial (quiet=False) 2017-06-29 16:00:15,222 - util.py[WARNING]: failed read of /sys/class/dmi/id/product_serial 2017-06-29 16:00:15,223 - util.py[DEBUG]: failed read of /sys/class/dmi/id/product_serial Traceback (most recent call last): File "/usr/lib/python3/dist-packages/cloudinit/util.py", line 2359, in _read_dmi_syspath key_data = load_file(dmi_key_path, decode=False) File "/usr/lib/python3/dist-packages/cloudinit/util.py", line 1283, in load_file with open(fname, 'rb') as ifh: PermissionError: [Errno 13] Permission denied: '/sys/class/dmi/id/product_serial' 2017-06-29 16:00:15,225 - util.py[DEBUG]: Running command ['/usr/sbin/dmidecode', '--string', 'system-serial-number'] with allowed return codes [0] (shell=False, capture=True) 2017-06-29 16:00:15,228 - util.py[DEBUG]: failed dmidecode cmd: ['/usr/sbin/dmidecode', '--string', 'system-serial-number'] Unexpected error while running command. Command: ['/usr/sbin/dmidecode', '--string', 'system-serial-number'] Exit code: 1 Reason: - Stdout: - Stderr: /sys/firmware/dmi/tables/smbios_entry_point: Permission denied /dev/mem: No such file or directory ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: cloud-init 0.7.9-197-gebc9ecbc-0ubuntu1 ProcVersionSignature: Ubuntu 4.10.0-22.24-generic 4.10.15 Uname: Linux 4.10.0-22-generic x86_64 ApportVersion: 2.20.5-0ubuntu5 Architecture: amd64 Date: Thu Jun 29 16:47:51 2017 PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=C.UTF-8 SourcePackage: cloud-init UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-init/+bug/1701325/+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