[libvirt-users] Creating network interfaces with specific name in LXC
Hello I am trying to create interfaces within an LXC container with specific name. I am using the following XML: <interface type='network' name='blah'> <source network='dpbr_n_0'/> </interface> This doesn't seem to work; it always ends up creating interface with name as "eth0". I found some examples here: http://libvirt.org/guide/html/Application_Development_Guide-Network_Interfac... That uses interface type as "ethernet" and specifies name also, If I do that, I get back an error while starting the container as "Unsupported network type ethernet". Appreciate your help. Regards, Harish
On Fri, Oct 30, 2015 at 08:16:33PM +0530, Harish Vishwanath wrote:
Hello
I am trying to create interfaces within an LXC container with specific name. I am using the following XML:
<interface type='network' name='blah'> <source network='dpbr_n_0'/> </interface>
That name='' is not parsed, it won't get saved, it doesn't mean anything to libvirt. This particular configuration doesn't say much, because type=network means all the settings will get set from the network dpbr_n_0. See https://libvirt.org/formatdomain.html for all the things you can configure in <interface/> and what does each option mean.
This doesn't seem to work; it always ends up creating interface with name as "eth0".
I found some examples here: http://libvirt.org/guide/html/Application_Development_Guide-Network_Interfac...
That uses interface type as "ethernet" and specifies name also, If I do that, I get back an error while starting the container as "Unsupported network type ethernet".
Appreciate your help.
Regards, Harish
_______________________________________________ libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
Thanks Martin. What I would like to achieve is govern the interface name created within the container, so that my application can take different actions on different interfaces (such as eth0, eth1 etc.,). Libvirt's lxc driver seems to create interfaces as eth0, eth1 and so on, when there are multiple <interface /> entries in the domain xml. How can I request for a particular interface name? I saw that in some of the examples in https://libvirt.org/formatdomain.html, <source dev=" " network=" "> is specified. I tried setting the "dev" attribute of source tag, but it doesn't look like that is being parsed and stored either. Regards, Harish On Fri, Oct 30, 2015 at 8:32 PM, Martin Kletzander <mkletzan@redhat.com> wrote:
On Fri, Oct 30, 2015 at 08:16:33PM +0530, Harish Vishwanath wrote:
Hello
I am trying to create interfaces within an LXC container with specific name. I am using the following XML:
<interface type='network' name='blah'> <source network='dpbr_n_0'/> </interface>
That name='' is not parsed, it won't get saved, it doesn't mean anything to libvirt. This particular configuration doesn't say much, because type=network means all the settings will get set from the network dpbr_n_0. See https://libvirt.org/formatdomain.html for all the things you can configure in <interface/> and what does each option mean.
This doesn't seem to work; it always ends up creating interface with name
as "eth0".
I found some examples here:
http://libvirt.org/guide/html/Application_Development_Guide-Network_Interfac...
That uses interface type as "ethernet" and specifies name also, If I do that, I get back an error while starting the container as "Unsupported network type ethernet".
Appreciate your help.
Regards, Harish
_______________________________________________
libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
On Fri, Oct 30, 2015 at 10:09:51PM +0530, Harish Vishwanath wrote:
Thanks Martin. What I would like to achieve is govern the interface name created within the container, so that my application can take different actions on different interfaces (such as eth0, eth1 etc.,).
<interface> <guest dev='devicename'/> </interface> That is what you're looking for. Although I usually recommend not relying on the name, but rather using the MAC address. Also <target dev='othername'/> says how the device will be named on the host.
Libvirt's lxc driver seems to create interfaces as eth0, eth1 and so on, when there are multiple <interface /> entries in the domain xml. How can I request for a particular interface name?
I saw that in some of the examples in https://libvirt.org/formatdomain.html, <source dev=" " network=" "> is specified. I tried setting the "dev" attribute of source tag, but it doesn't look like that is being parsed and stored either.
Regards, Harish
On Fri, Oct 30, 2015 at 8:32 PM, Martin Kletzander <mkletzan@redhat.com> wrote:
On Fri, Oct 30, 2015 at 08:16:33PM +0530, Harish Vishwanath wrote:
Hello
I am trying to create interfaces within an LXC container with specific name. I am using the following XML:
<interface type='network' name='blah'> <source network='dpbr_n_0'/> </interface>
That name='' is not parsed, it won't get saved, it doesn't mean anything to libvirt. This particular configuration doesn't say much, because type=network means all the settings will get set from the network dpbr_n_0. See https://libvirt.org/formatdomain.html for all the things you can configure in <interface/> and what does each option mean.
This doesn't seem to work; it always ends up creating interface with name
as "eth0".
I found some examples here:
http://libvirt.org/guide/html/Application_Development_Guide-Network_Interfac...
That uses interface type as "ethernet" and specifies name also, If I do that, I get back an error while starting the container as "Unsupported network type ethernet".
Appreciate your help.
Regards, Harish
_______________________________________________
libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
Thanks very much Martin! It looks like <guest dev='' /> is available only from 1.2.7 version of libvirt. I am on 1.2.2, so bad luck! Regards, Harish On Mon, Nov 2, 2015 at 9:35 PM, Martin Kletzander <mkletzan@redhat.com> wrote:
On Fri, Oct 30, 2015 at 10:09:51PM +0530, Harish Vishwanath wrote:
Thanks Martin. What I would like to achieve is govern the interface name created within the container, so that my application can take different actions on different interfaces (such as eth0, eth1 etc.,).
<interface> <guest dev='devicename'/> </interface>
That is what you're looking for. Although I usually recommend not relying on the name, but rather using the MAC address.
Also <target dev='othername'/> says how the device will be named on the host.
Libvirt's lxc driver seems to create interfaces as eth0, eth1 and so on,
when there are multiple <interface /> entries in the domain xml. How can I request for a particular interface name?
I saw that in some of the examples in https://libvirt.org/formatdomain.html, <source dev=" " network=" "> is specified. I tried setting the "dev" attribute of source tag, but it doesn't look like that is being parsed and stored either.
Regards, Harish
On Fri, Oct 30, 2015 at 8:32 PM, Martin Kletzander <mkletzan@redhat.com> wrote:
On Fri, Oct 30, 2015 at 08:16:33PM +0530, Harish Vishwanath wrote:
Hello
I am trying to create interfaces within an LXC container with specific name. I am using the following XML:
<interface type='network' name='blah'> <source network='dpbr_n_0'/> </interface>
That name='' is not parsed, it won't get saved, it doesn't mean
anything to libvirt. This particular configuration doesn't say much, because type=network means all the settings will get set from the network dpbr_n_0. See https://libvirt.org/formatdomain.html for all the things you can configure in <interface/> and what does each option mean.
This doesn't seem to work; it always ends up creating interface with name
as "eth0".
I found some examples here:
http://libvirt.org/guide/html/Application_Development_Guide-Network_Interfac...
That uses interface type as "ethernet" and specifies name also, If I do that, I get back an error while starting the container as "Unsupported network type ethernet".
Appreciate your help.
Regards, Harish
_______________________________________________
libvirt-users mailing list libvirt-users@redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users
participants (2)
-
Harish Vishwanath -
Martin Kletzander