[lxc-users] Error connecting to cgroup manager

[Serge Hallyn]

Quoting Alan Hoffmeister (alanhoffmeister at gmail.com):
> Hello folks, I'm getting this messages when trying to autostart a vanilla
> ubuntu 14.04 guest on an ubntu 14.04 host, I'm using LXC 1.1.2
> 
>       lxc-start 1433600022.910 ERROR    lxc_cgmanager -
> cgmanager.c:cgm_destroy:571 - Error connecting to cgroup manager
>       lxc-start 1433600096.266 ERROR    lxc_cgmanager -
> cgmanager.c:cgm_bind_dir:1339 - /usr/lib/x86_64-linux-gnu/lxc/sys/fs/cgroup
> does not exist

Hm, this looks like a race.  lxc.conf starts on runlevel [2345].
cgmanager starts on starting dbus.  If cgmanager is slow to start,
I'm not sure there is anything stopping runlevel 2 from being entered before
cgmanager is up.

Does it reliably solve your issue if you change the 'start on' line in
/etc/init/lxc.conf to

start on runlevel [2345] and started cgmanager

?

>       lxc-start 1433600096.286 ERROR    lxc_conf -
> conf.c:lxc_mount_auto_mounts:846 - No such file or directory - error
> mounting /sys/fs/cgroup
>       lxc-start 1433600096.286 ERROR    lxc_conf - conf.c:lxc_setup:3847 -
> failed to setup the automatic mounts for 'test'
>       lxc-start 1433600096.286 ERROR    lxc_start - start.c:do_start:699 -
> failed to setup the container
>       lxc-start 1433600096.286 ERROR    lxc_sync - sync.c:__sync_wait:51 -
> invalid sequence number 1. expected 2
>       lxc-start 1433600096.319 ERROR    lxc_start -
> start.c:__lxc_start:1164 - failed to spawn 'test'
>       lxc-start 1433600101.324 ERROR    lxc_start_ui - lxc_start.c:main:344
> - The container failed to start.
>       lxc-start 1433600101.325 ERROR    lxc_start_ui - lxc_start.c:main:346
> - To get more details, run the container in foreground mode.
>       lxc-start 1433600101.325 ERROR    lxc_start_ui - lxc_start.c:main:348
> - Additional information can be obtained by setting the --logfile and
> --logpriority options
> 
> --
> Alan Hoffmeister
> https://twitter.com/alan_hoff
> https://github.com/alanhoff
> https://keybase.io/alanhoff

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