On Tue, 2011-12-13 at 14:42 +0530, nishant mungse wrote:
> Hi,
>
> My basic need::
>
> I am writing a simple socket programme and as input to programme I
> want to give the IP address of containers. Now I have IP address in
> sequential order, but to make my socket programme running I need the
> networking service of the containers to start.
>
Hmmm... not enough context again. Where does the program run: container
or host ? What does it do ?
> I am able to do this using lxc-start as it call lxc-init where upstart
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Are you sure this is what you want to say ? AFAIK lxc-start doesn't call
lxc-init by default but /sbin/init (upstart in your case).
> which handles the starting of service during booting, but I don't
Right.
> want to use this lxc-start, but want to start only networking service
Why don't you want to use lxc-start ? Is it because you want to defer
the starting of some services to a later time ?
> so that my socket programme works.
>
> Can I start only networking service using lxc-execute or not????
>
No you can't.
>
> Is there any other solution to this?????
>
If your need is to defer the startup of some services, then it's an
upstart story... I don't know upstart but I guess it's possible to
configure it so that when you do lxc-start, a minimal set of services
will be started to provide network.
> Regards,
> Nishant
>
Cheers.
--
Greg
> On Mon, Dec 12, 2011 at 3:31 PM, Greg Kurz <gk...@fr.ibm.com> wrote:
> On Mon, 2011-12-12 at 11:54 +0530, nishant mungse wrote:
> > Hi Geordy,
> >
>
> Hi Nishant,
>
> I removed Cc: to containers@ as your troubles are about using
> the lxc
> userspace tool: lxc-users@ is THE place for seeking help.
>
> > This script gives the IP address of running system, but what
> I want is
> > to get the IP address of the containers that are not started
> using
> > lxc-start, lxc-start will call /sbin/init to init all the
> system, but
> > I want to use lxc-execute that will no init the system.
> >
>
>
> I still don't understand what you intend to do... All I can
> say is that
> using lxc-execute to partially start a container (that's what
> you're
> doing when you want do lxc-execute /etc/init.d/networking) is
> a total
> nonsense. Sorry.
>
> >
> > Hey Greg you said that, it is possible to get the IP address
> without
> > starting the containers how can we do this????
> >
>
>
> Your containers don't get their IP addresses in a vacuum...
> Either the
> addresses are statically configured is some distro specific
> file, either
> they are assigned by an external service (DHCP most of the
> time).
> In the first case, you can probably find the address by
> parsing the
> appropriate file from your container's filesystem
> (/etc/sysconfig/network-scripts/ifcfg-eth0 for example on
> redhat). In
> the second case, it depends on the DHCP server setup... please
> see that
> with your sysadmin.
>
> > And one more question how to start the network services
> using
> > lxc-execute
> >
>
>
> As told before, nonsense.
>
> >
> > Please help me ASAP.
> >
> >
>
> That's what several people on the list are trying to do... If
> you really
> need help, stop asking about how to misuse lxc-execute and
> give some
> hints about your network setup... Do your containers use
> static
> addresses ? Do they rely on a DHCP server ? Are you sysadmin
> for the
> DHCP server ?
>
> Unless you provide more context, I'm afraid nobody will be
> able to help
> you...
>
> Cheers.
>
> --
> Gregory Kurz
> gk...@fr.ibm.com
> Software Engineer @ IBM/Meiosys
> http://www.ibm.com
> Tel +33 (0)534 638 479 Fax +33
> (0)561 400 420
>
> "Anarchy is about taking complete responsibility for
> yourself."
> Alan Moore.
>
>
>
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