On Mon, Jun 9, 2014 at 8:47 PM, frodox <fro...@zoho.com> wrote: > yup, lxc-attach starts a process inside a running container. But it can > starts only processes/programs that already exists (installed) inside a > container. > > May be I misunderstand Dominik Schulz,
Reading at the archive, Dominik pretty much wanted lxc-attach. > but what I mean -- how to execute/move a process from host OS inside a > running container It was Marco who wanted something that. And for that requirement, I have no idea whether it's possible. > (i.e. without installing it inside; like run it in sandbox or move already > running process). > It is very close to recent thread "Howto/Tutorial wanted: Running an > application inside a container" That's different. Stephane's article installs the program inside the container. > (btw, I succeeded your tutorial in that thread, except gui apps.) ... and the problem is ...? IIRC I had some problems as well (using bind-mounted existing root and overlayfs as container root), and it turns out part of the startup process inside the container removes /tmp/.X11-unix/* . The "workaround" was to disable (or uninstall) lightdm (or whatever display manager you use) inside the container, so the hosts's /tmp/.X11-unix/X0 stays intact. > And, well, related question. > I read a lot, that it's not good to run lxc-execute, and also you said > > ... Again, personally I prefer to simply use full OS in the container(even > with the consequence oh having to update it separately from thehost) combined > with lxc-start and lxc-attach. I did say "personally" :) Other people might find lxc-execute useful for their needs. > > is there any security issues, except not that I know of there are specific to lxc-execute. -- Fajar > > For the network interface part you can work around it by specifying it in > the container config file, but you might need other things configured as well > (e.g. iptables, dependent services like mysql,etc), >> which is why I would recommend lxc-start and lxc-attach over lxc-execute. > > while use lxc-execute? > may be, we can improve lxc-execute in that way..? > > -- > Regards, Christian. > > > > ---- On Mon, 09 Jun 2014 17:19:15 +0400 Fajar A. Nugraha<l...@fajar.net> > wrote ---- > > > > On Mon, Jun 9, 2014 at 5:53 PM, frodox <fro...@zoho.com> wrote: > > > Hi all. > > > > > > A few years ago there was a thread about executing a command inside a > > > running container [1]. > > > > > But how about nowadays? > > > Is it possible now, since we have a new system call setns(2), which looks > > > like does exactly necessary thing? > > > > http://manpages.ubuntu.com/manpages/trusty/man1/lxc-attach.1.html > > > > -- > > Fajar > > _______________________________________________ > 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
