12:09 a.m.
Dear All,
I want to start my application automatically after I start the container with a virsh
command " virsh -c lxc:/// start mycontainer"
How can I achieve this?
Thank you in advance.
Cheng
3:11 a.m.
On Thu, Oct 23, 2014 at 05:09:50AM +0000, WANG Cheng D wrote:
Dear All,
I want to start my application automatically after I start the container with a virsh
command " virsh -c lxc:/// start mycontainer"
How can I achieve this?
Whatever you specify as the <init>....</init> binary in the container
XML file is started when the container is created. If you only want
1 application to run, then this is straightforward. If you want to
run multiple applications either point the "init" binary to a shell
script to run the many things, or better yet use a real init system
like systemd to spawn off the things you need.
Regards,
Daniel
--
|: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org -o- http://virt-manager.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
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3:03 a.m.
Dear Daniel,
You said "use a real init system like systemd to spawn off the things", do you
mean a full OS distro container?
I installed the container using "yum --installroot=/root/fedora19lxc --releasever=19
install -y openssh, bridge-utils" which is described at
https://www.redhat.com/archives/libvirt-users/2013-August/msg00007.html.
I don't know how to make systemd work in my current container. And I don't know
how to install a full OS distro container either. Could you give me more guidance?
With my warmest regards,
Cheng
-----Original Message-----
From: Daniel P. Berrange [mailto:berrange@redhat.com]
Sent: 2014年10月23日 16:11
To: WANG Cheng D
Cc: libvirt-users(a)redhat.com
Subject: Re: [libvirt-users] How can a user process be automatically started after the
container is started?
On Thu, Oct 23, 2014 at 05:09:50AM +0000, WANG Cheng D wrote:
Dear All,
I want to start my application automatically after I start the container with a virsh
command " virsh -c lxc:/// start mycontainer"
How can I achieve this?
Whatever you specify as the <init>....</init> binary in the container XML file
is started when the container is created. If you only want
1 application to run, then this is straightforward. If you want to run multiple
applications either point the "init" binary to a shell script to run the many
things, or better yet use a real init system like systemd to spawn off the things you
need.
Regards,
Daniel
--
|: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org -o- http://virt-manager.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
3:08 a.m.
On Fri, Oct 24, 2014 at 08:03:59AM +0000, WANG Cheng D wrote:
Dear Daniel,
You said "use a real init system like systemd to spawn off the things", do you
mean a full OS distro container?
I installed the container using "yum --installroot=/root/fedora19lxc --releasever=19
install -y openssh, bridge-utils" which is described at
https://www.redhat.com/archives/libvirt-users/2013-August/msg00007.html.
I don't know how to make systemd work in my current container.
And I don't know how to install a full OS distro container
either. Could you give me more guidance?
If you install a modern Fedora distro in a chroot and use that as the
filesystem for the container, then you have a container that uses
systemd for startup. There is nothing special you should ned todo with
system - it ought to "just work" as systemd is designed to easily cope
with running inside a container. For reference see also this:
https://www.berrange.com/posts/2013/08/12/running-a-full-fedora-os-inside...
Regards,
Daniel
--
|: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org -o- http://virt-manager.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
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3 comments
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participants (2)
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Daniel P. Berrange -
WANG Cheng D