Re: [CentOS-virt] Disable/stop nic in a virtual guest with virsh
On Wed, Feb 18, 2015 at 3:10 AM, C. L. Martinez wrote: > On Tue, Feb 17, 2015 at 1:43 PM, Sven Kieske wrote: > > > > > > On 17/02/15 09:18, C. L. Martinez wrote: > >> Hi all, > >> > >> How can I stop/disable a nic in a virtual guest using a virsh > >> command?? I am searching the same effect like if I unplug network > >> cable ... Is it possible?? I have tried with "detach-interface" > >> command without luck. I don't want to remove the nic from guest > >> configuration, only to stop the nic ... > > > > Depending on your network architecture you could just ifdown > > the vmnet, but this just works if you don't have multiple > > vms on one vmnet (which you shouldn't). > > > > HTH > > > > -- > > Ok, to do a ifdown of virtual bridge it seems the only option. > > Many thanks to all for your answers. > * Definitely look to Juerg Haefliger's solution. It's exactly what you want since you requested a method that can be done from the virsh interface. Thanks Juerg! 1) down the vnetX interface from the host node ip link show dev vnetX ip link set down vnetX ip link show dev vnetX And if using bridged networking, you have one more option. 2) remove the vnetX interface from the bridge brctl delif vnetX Certainly downing the interface using either Juerg's solution via virsh or mine via iproute2 tools is most ideal since it's easier/simpler to reinstate. You can use ifconfig if you prefer it over ip tools, but enjoy those tools and syntax while it remains! [0] ;-) [0] https://dougvitale.wordpress.com/2011/12/21/deprecated-linux-networking-commands-and-their-replacements/ -- ---~~.~~--- Mike // SilverTip257 // ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Disable/stop nic in a virtual guest with virsh
On Wed, Feb 18, 2015 at 9:10 AM, C. L. Martinez wrote: > On Tue, Feb 17, 2015 at 1:43 PM, Sven Kieske wrote: >> >> >> On 17/02/15 09:18, C. L. Martinez wrote: >>> Hi all, >>> >>> How can I stop/disable a nic in a virtual guest using a virsh >>> command?? I am searching the same effect like if I unplug network >>> cable ... Is it possible?? I have tried with "detach-interface" >>> command without luck. I don't want to remove the nic from guest >>> configuration, only to stop the nic ... There's a qemu monitor command for that. You can pass it in through virsh: $ virsh qemu-monitor-command --hmp 'set_link off' Example: # virsh list IdName State 3 dwarf-0039 running # virsh qemu-monitor-command --hmp dwarf-0039 'info network' net0: index=0,type=nic,model=virtio-net-pci,macaddr=52:54:00:a8:85:ea \ hostnet0: index=0,type=tap,fd=24 # virsh qemu-monitor-command --hmp dwarf-0039 'set_link net0 off' ...Juerg >> Depending on your network architecture you could just ifdown >> the vmnet, but this just works if you don't have multiple >> vms on one vmnet (which you shouldn't). >> >> HTH >> >> -- > > Ok, to do a ifdown of virtual bridge it seems the only option. > > Many thanks to all for your answers. > ___ > CentOS-virt mailing list > CentOS-virt@centos.org > http://lists.centos.org/mailman/listinfo/centos-virt ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Disable/stop nic in a virtual guest with virsh
On Tue, Feb 17, 2015 at 1:43 PM, Sven Kieske wrote: > > > On 17/02/15 09:18, C. L. Martinez wrote: >> Hi all, >> >> How can I stop/disable a nic in a virtual guest using a virsh >> command?? I am searching the same effect like if I unplug network >> cable ... Is it possible?? I have tried with "detach-interface" >> command without luck. I don't want to remove the nic from guest >> configuration, only to stop the nic ... > > Depending on your network architecture you could just ifdown > the vmnet, but this just works if you don't have multiple > vms on one vmnet (which you shouldn't). > > HTH > > -- Ok, to do a ifdown of virtual bridge it seems the only option. Many thanks to all for your answers. ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Disable/stop nic in a virtual guest with virsh
On 17/02/15 09:18, C. L. Martinez wrote: > Hi all, > > How can I stop/disable a nic in a virtual guest using a virsh > command?? I am searching the same effect like if I unplug network > cable ... Is it possible?? I have tried with "detach-interface" > command without luck. I don't want to remove the nic from guest > configuration, only to stop the nic ... Depending on your network architecture you could just ifdown the vmnet, but this just works if you don't have multiple vms on one vmnet (which you shouldn't). HTH -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Disable/stop nic in a virtual guest with virsh
I don't think it can be done. I would try to remove the VM's vnet from the bridge it's connected to. HTH Lucian -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro - Original Message - > From: "C. L. Martinez" > To: centos-virt@centos.org > Sent: Tuesday, 17 February, 2015 08:18:56 > Subject: [CentOS-virt] Disable/stop nic in a virtual guest with virsh > Hi all, > > How can I stop/disable a nic in a virtual guest using a virsh > command?? I am searching the same effect like if I unplug network > cable ... Is it possible?? I have tried with "detach-interface" > command without luck. I don't want to remove the nic from guest > configuration, only to stop the nic ... > > Thanks. > > P.D: Host is CentOS 6.6 x86_64 fully patched. > ___ > CentOS-virt mailing list > CentOS-virt@centos.org > http://lists.centos.org/mailman/listinfo/centos-virt ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] Disable/stop nic in a virtual guest with virsh
Hi all, How can I stop/disable a nic in a virtual guest using a virsh command?? I am searching the same effect like if I unplug network cable ... Is it possible?? I have tried with "detach-interface" command without luck. I don't want to remove the nic from guest configuration, only to stop the nic ... Thanks. P.D: Host is CentOS 6.6 x86_64 fully patched. ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
