Re: [lxc-users] LXD: modify IP of snapshot before starting
On Fri, Dec 07, 2018 at 09:34:14AM -0600, Steven Spencer wrote: > All, > > My Google search turned up empty, so I'm turning to the list to see if this > is possible: > > * In LXD I make a copy of a container, but want to create a new container > from it > * The container has a static assigned IP address, so if I bring up the new How is the static ip address assigned? Using raw.lxc, using dhcp config on the host, using /etc/network/interfaces or the like in the container's rootfs? How are you currently copying it? Are you using lxc copy --stateless? Can you just pass '-c ' to the lxc copy command to change the ipv4 configuration? > container with the other one running, I'm going to end up with an IP > conflict > * What I'd like to be able to do is to change the IP of the snapshot before > creating a container out of it. > > Is that possible, or am I missing another method. I've already done this > step before, which works, but isn't the best if you want to keep systems up. > > * Stop the original container > * create the new container with the snapshot > * modify the IP of the new container > * start the original container > > If it isn't possible, I'll continue on as I've been doing. > > Thanks, > Steven G. Spencer > ___ > lxc-users mailing list > lxc-users@lists.linuxcontainers.org > http://lists.linuxcontainers.org/listinfo/lxc-users ___ lxc-users mailing list lxc-users@lists.linuxcontainers.org http://lists.linuxcontainers.org/listinfo/lxc-users
Re: [lxc-users] lxd access from host to container rootfs
On Wed, Dec 05, 2018 at 02:55:33PM +0100, Ingo Baab wrote:
> Hello All,
> how can I access the LXD/LXC containers rootfs from the host system?
> (if I am using ubuntu18.04 with snap lxc --version 3.7 on loopback-ZFS)
>
> On other (real ZFS-based and U16.04) server I can access:
>
> "/var/lib/lxd/containers/{$containername}/rootfs/"
>
> Any hints?
> Ingo
Well, I'm sure there is a better answer, but as I don't run the
snap version of lxd, i'm not sure of "the right" way, so...
the first thing you can do, if the container is running, is
pid=$(lxc info $containername | awk '/Pid/ { print $2 }')
ls /proc/$pid/root
You also should be able to look at the open fds in the running
lxd for a hint as to where the info is being kept,
pid=$(pidof lxd | awk '{ print $1 }')
ls -l /proc/$pid/fd | grep $containername
or
ls -l /proc/$pid/fd | grep database
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Re: [lxc-users] LXD: modify IP of snapshot before starting
Greetings, Steven Spencer! > My Google search turned up empty, so I'm turning to the list to see if this > is possible: > * In LXD I make a copy of a container, but want to create a new container > from it > * The container has a static assigned IP address, so if I bring up the new > container with the other one running, I'm going to end up with an IP conflict > * What I'd like to be able to do is to change the IP of the snapshot before > creating a container out of it. > Is that possible, or am I missing another method. I've already done this > step before, which works, but isn't the best if you want to keep systems up. That's because you're doing it wrong. You should have a template container which "never" online, from it you could create copies, edit them and start them as you pleased. > * Stop the original container > * create the new container with the snapshot > * modify the IP of the new container > * start the original container > If it isn't possible, I'll continue on as I've been doing. -- With best regards, Andrey Repin Friday, December 7, 2018 20:32:59 Sorry for my terrible english... ___ lxc-users mailing list lxc-users@lists.linuxcontainers.org http://lists.linuxcontainers.org/listinfo/lxc-users
[lxc-users] LXD: modify IP of snapshot before starting
All, My Google search turned up empty, so I'm turning to the list to see if this is possible: * In LXD I make a copy of a container, but want to create a new container from it * The container has a static assigned IP address, so if I bring up the new container with the other one running, I'm going to end up with an IP conflict * What I'd like to be able to do is to change the IP of the snapshot before creating a container out of it. Is that possible, or am I missing another method. I've already done this step before, which works, but isn't the best if you want to keep systems up. * Stop the original container * create the new container with the snapshot * modify the IP of the new container * start the original container If it isn't possible, I'll continue on as I've been doing. Thanks, Steven G. Spencer ___ lxc-users mailing list lxc-users@lists.linuxcontainers.org http://lists.linuxcontainers.org/listinfo/lxc-users
