Ubuntu 16.04.5 :: Can not start a container


(John Dreamer) #1

Hello,

I have installed lxc2 in Ubuntu 16.04.5 and currently try to start new created container.

For unknown to me reason the container refuses to start. I followed ‘Getting started’ instructions and the container is created but a command

lxc-start -n fog-container -d
lxc-ls -f

gives following output

NAME             STATE   AUTOSTART  GROUPS  IPV4  IPV6  UNPRIVILEGED
fog-container  STOPPED 0            -   -   -   true

I’ve attempted to create ‘privileged’ container under root account with same result

NAME             STATE   AUTOSTART  GROUPS  IPV4  IPV6  UNPRIVILEGED
fog-container  STOPPED 0             -   -   -   false

I did some reading on a problem, devpts looks good

devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)

I’ve attempted to start the container with following command

root# lxc-start -n fog-container -l DEBUG -F --logfile /tmp/fog-container.log`
    lxc-start: fog-container: sync.c: __sync_wait: 59 An error occurred in another process (expected sequence number 7)
                                       lxc-start: fog-container: start.c: __lxc_start: 1910 Failed to spawn container "fog-container"
                                                     lxc-start: fog-container: tools/lxc_start.c: main: 330 The container failed to start
    lxc-start: fog-container: tools/lxc_start.c: main: 336 Additional information can be obtained by setting the --logfile and --logpriority options

root#  egrep -i 'warn|error' /tmp/fog-container.log
lxc-start fog-container 20181219025215.784 WARN     start - start.c:lxc_check_inherited:289 - Inherited fd 3
lxc-start fog-container 20181219025215.883 WARN     conf - conf.c:lxc_setup_devpts:1620 - Invalid argument - Failed to unmount old devpts instance
lxc-start fog-container 20181219025215.887 ERROR    start - start.c:start:1999 - Exec format error - Failed to exec "/sbin/init"
lxc-start fog-container 20181219025215.887 ERROR    sync - sync.c:__sync_wait:59 - An error occurred in another process (expected sequence number 7)
lxc-start fog-container 20181219025215.927 ERROR    start - start.c:__lxc_start:1910 - Failed to spawn container "fog-container"
lxc-start fog-container 20181219025216.455 ERROR    lxc_start - tools/lxc_start.c:main:330 - The container failed to start
lxc-start fog-container 20181219025216.455 ERROR    lxc_start - tools/lxc_start.c:main:336 - Additional information can be obtained by setting the --logfile and --logpriority options

Full log file can be obtained by following next link fog-container.log

John


(Sailaja) #2

Hi, This can be helpful to you
https://www.alibabacloud.com/blog/how-to-install-and-configure-lxc-container-on-ubuntu-16-04_594090