[lxc-users] old Ubuntu 8.04 container, /sbin/init fails
jf
jfmeteo at gmail.com
Sat Jan 21 20:53:39 UTC 2017
Thanks for the help.
So what I miss is how to debug /sbin/init in a container ?
I saw that lxc-start has an extra argument to execute the init command like
lxc-start -n container /sbin/init.
But I'm using lxd and didn't find any equivalent command for lxc start.
2017-01-21 21:36 GMT+01:00 Fajar A. Nugraha <list at fajar.net>:
> On Sun, Jan 22, 2017 at 3:08 AM, jf <jfmeteo at gmail.com> wrote:
>
>> Hi,
>>
>> I'm using Ubuntu 16.04 with the default Ubuntu lxd package.
>> I'm trying to start a Ubuntu 8.04 container, but I didn't find any
>> image. So I built and imported an image from deboostrap.
>>
>>
> Whenever possibly, don't try to run any end-of-life distro, as it could
> open yourself to various security hole, and possibly harm others (e.g. when
> your setup is compromized by botnet). Even if it's in container.
>
>
>
>> When I start the container, /sbin/init doesn't init anything and "lxc
>> stop" hangs:
>> * lxc start ub8
>> * lxc exec ub8 ps auwwx
>> USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
>> root 1 0.0 0.0 4020 1428 ? Ss Jan22 0:00
>> /sbin/init
>> root 25 0.0 0.0 14856 1700 ? Rs+ Jan22 0:00 ps auwwx
>>
>>
>> If I run these 3 commands:
>> * lxc start ub8
>> * lxc exec ub8 /etc/init.d/rc S
>> * lxc exec ub8 /etc/init.d/rc 2
>> everything goes fine: the system is initialized and I can stop it.
>>
>> Do I miss something ? Why do I need to manually run /etc/init.d/rc ?
>>
>>
> Short version: some changes are necessary to run inside a container. Newer
> distro versions (e.g. xenial) has those changes built in, older ones don't.
>
> See https://github.com/lxc/lxc/blob/master/templates/lxc-centos.in on
> what some of the changes look like for a sysvinit-based distro (this
> includes editing /etc/inittab).
>
> --
> Fajar
>
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>
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