[lxc-users] Are these messages normal for un-previlieged lxc containers?

[John Siu]

> On Feb 22, 2016, at 12:55, Serge Hallyn <serge.hallyn at ubuntu.com> wrote:
> 
> Quoting John Siu (john.sd.siu at gmail.com):
>> OS: Ubuntu 16.04
>> LXC: 2.0.0-rc1
>> 
>> Following are from host journal when starting up a lxc container:
>> 
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18926 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/blkio/user.slice/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18926 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/cpuacct/user.slice/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18926 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/cpuset/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18926 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/devices/user.slice/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18926 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/hugetlb/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18926 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/net_prio/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18926 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/perf_event/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18926 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/pids/user.slice/user-1000.slice/session-2.scope/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18930 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/blkio/user.slice/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18930 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/cpuacct/user.slice/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18930 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/cpuset/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18930 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/devices/user.slice/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18930 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/hugetlb/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18930 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/net_prio/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18930 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/perf_event/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18930 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/pids/user.slice/user-1000.slice/session-2.scope/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18936 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/blkio/user.slice/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18935 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/blkio/user.slice/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18936 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/cpuacct/user.slice/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18935 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/cpuacct/user.slice/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18936 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/cpuset/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18935 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/cpuset/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18936 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/devices/user.slice/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18935 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/devices/user.slice/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18936 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/hugetlb/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18935 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/hugetlb/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18936 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/net_prio/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18935 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/net_prio/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18936 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/perf_event/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18935 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/perf_event/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18936 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/pids/user.slice/user-1000.slice/session-2.scope/lxc
>> Feb 22 01:31:18 JS-HP cgmanager[2978]: cgmanager:do_create_main: pid 18935 (uid 1000 gid 1000) may not create under /run/cgmanager/fs/pids/user.slice/user-1000.slice/session-2.scope/lxc
>> Feb 22 01:31:18 JS-HP kernel: IPv6: ADDRCONF(NETDEV_UP): vethPYRIGJ: link is not ready
>> Feb 22 01:31:18 JS-HP kernel: device vethPYRIGJ entered promiscuous mode
>> Feb 22 01:31:18 JS-HP kernel: public: renamed from vethPYRIGJp
>> Feb 22 01:31:18 JS-HP kernel: IPv6: ADDRCONF(NETDEV_UP): veth9SIJ98: link is not ready
>> Feb 22 01:31:18 JS-HP kernel: device veth9SIJ98 entered promiscuous mode
>> Feb 22 01:31:18 JS-HP kernel: mgmt: port 2(veth9SIJ98) entered forwarding state
>> Feb 22 01:31:18 JS-HP kernel: mgmt: port 2(veth9SIJ98) entered forwarding state
>> Feb 22 01:31:18 JS-HP kernel: mgmt: renamed from veth9SIJ98p
>> Feb 22 01:31:18 JS-HP systemd-udevd[19248]: Could not generate persistent MAC address for vethM46DG6p: No such file or directory
>> Feb 22 01:31:18 JS-HP kernel: IPv6: ADDRCONF(NETDEV_UP): vethM46DG6: link is not ready
>> Feb 22 01:31:18 JS-HP kernel: device vethM46DG6 entered promiscuous mode
>> Feb 22 01:31:18 JS-HP kernel: private0: port 2(vethM46DG6) entered forwarding state
>> Feb 22 01:31:18 JS-HP kernel: private0: port 2(vethM46DG6) entered forwarding state
>> Feb 22 01:31:18 JS-HP kernel: private: renamed from vethM46DG6p
>> Feb 22 01:31:18 JS-HP kernel: mgmt: port 2(veth9SIJ98) entered disabled state
>> Feb 22 01:31:18 JS-HP kernel: private0: port 2(vethM46DG6) entered disabled state
>> Feb 22 01:31:18 JS-HP kernel: IPv6: ADDRCONF(NETDEV_CHANGE): vethPYRIGJ: link becomes ready
>> Feb 22 01:31:18 JS-HP kernel: public: port 2(vethPYRIGJ) entered forwarding state
>> Feb 22 01:31:18 JS-HP kernel: public: port 2(vethPYRIGJ) entered forwarding state
>> Feb 22 01:31:18 JS-HP kernel: IPv6: ADDRCONF(NETDEV_CHANGE): veth9SIJ98: link becomes ready
>> Feb 22 01:31:18 JS-HP kernel: mgmt: port 2(veth9SIJ98) entered forwarding state
>> Feb 22 01:31:18 JS-HP kernel: mgmt: port 2(veth9SIJ98) entered forwarding state
>> Feb 22 01:31:18 JS-HP kernel: IPv6: ADDRCONF(NETDEV_CHANGE): vethM46DG6: link becomes ready
>> Feb 22 01:31:18 JS-HP kernel: private0: port 2(vethM46DG6) entered forwarding state
>> Feb 22 01:31:18 JS-HP kernel: private0: port 2(vethM46DG6) entered forwarding state
>> Feb 22 01:31:18 JS-HP audit[18945]: AVC apparmor="DENIED" operation="mount" info="failed type match" error=-13 profile="lxc-container-default" name="/sys/fs/cgroup/" pid=18945 comm="systemd" flags="ro, nosuid, nodev, noexec, remount, strictatime"
>> Feb 22 01:31:18 JS-HP kernel: audit: type=1400 audit(1456122678.561:43): apparmor="DENIED" operation="mount" info="failed type match" error=-13 profile="lxc-container-default" name="/sys/fs/cgroup/" pid=18945 comm="systemd" flags="ro, nosuid, nodev, noexec, remount, strictatime"
>> Feb 22 01:31:21 JS-HP audit[20333]: AVC apparmor="DENIED" operation="mount" info="failed flags match" error=-13 profile="lxc-container-default" name="/" pid=20333 comm="(l-upload)" flags="rw, rslave"
>> Feb 22 01:31:21 JS-HP kernel: audit: type=1400 audit(1456122681.413:44): apparmor="DENIED" operation="mount" info="failed flags match" error=-13 profile="lxc-container-default" name="/" pid=20333 comm="(l-upload)" flags="rw, rslave"
>> Feb 22 01:31:27 JS-HP kernel: mgmt: port 2(veth9SIJ98) entered forwarding state
>> Feb 22 01:31:27 JS-HP kernel: private0: port 2(vethM46DG6) entered forwarding state
>> Feb 22 01:31:33 JS-HP kernel: public: port 2(vethPYRIGJ) entered forwarding state
>> 
>> My main concern are those cgmanager and audit messages.
>> 
>> Are they normal for unprivileged container and can be ignore??
> 
> Those are normal.  The top ones are because (I assume) you're running
> libpam-cgfs (or libpam-cgm) and not getting cgroups that you own for
> those subsystems.  Notice freezer and name=systemd are not listed.
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I just install Ubuntu 16.04 and installed lxc from apt-get. I did not change/touch cgroup config, as I have completely no idea how :P