Public bug reported:
After upgrade from xenial to bionic (beta) I no longer could start
unpriveleged containers, they failed with following message:
lxc-start: test: start.c: lxc_spawn: 1555 Failed initializing cgroup support
lxc-start: test: start.c: __lxc_start: 1868 Failed to
spawn container "test"
The container failed to start.
Additional information can be obtained by setting the --logfile and
--logpriority options.
Moreover, I could see this in auth log:
Mar 23 18:21:46 host sudo: PAM unable to dlopen(pam_cgfs.so):
/lib/security/pam_cgfs.so: cannot open shared object file: No such file or
directory
Mar 23 18:21:46 host sudo: PAM adding faulty module: pam_cgfs.so
I have installed libpam-cgfs, but it provides only /lib/x86_64-linux-
gnu/security/pam_cgfs.so
Moreover, if I create a symlink from /lib/security/pam_cgfs.so to
/lib/x86_64-linux-gnu/security/pam_cgfs.so it fails with follwing
message:
PAM unable to dlopen(pam_cgfs.so): /lib/security/pam_cgfs.so: undefined
symbol: file_exists
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: lxc 3.0.0~beta2-0ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7
Uname: Linux 4.15.0-12-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CurrentDesktop: X-Cinnamon
Date: Fri Mar 23 18:20:38 2018
DistributionChannelDescriptor:
# This is a distribution channel descriptor
# For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
canonical-oem-somerville-xenial-amd64-20160624-2
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-06-22 (274 days ago)
InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary
20160624-10:47
PackageArchitecture: all
SourcePackage: lxc
UpgradeStatus: No upgrade log present (probably fresh install)
defaults.conf:
lxc.net.0.type = veth
lxc.net.0.link = lxcbr0
lxc.net.0.flags = up
lxc.net.0.hwaddr = 00:16:3e:xx:xx:xx
** Affects: lxc (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apparmor apport-bug bionic
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https://bugs.launchpad.net/bugs/1758380
Title:
unpriveleged containers no longer could start due to start.c:
lxc_spawn: 1555 Failed initializing cgroup support
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