Hello, After having integrated OVS with Ovirt and enabled it as default network provider I am facing the following issues. I can see with "ovs-vsctl show" that the virtual switch / bridge called "br-int" is created. I can see interfaces being added / removed to it as I start / stop VMs. [root@******* ~]# ovs-vsctl show 78e883f9-f074-4292-afce-bb829ded856b Bridge br-int fail_mode: secure Port "vnet6" Interface "vnet6" Port br-int Interface br-int type: internal Port "vnet4" Interface "vnet4" ovs_version: "2.9.0" Now I for example want to create a new interface as shown: ip tuntap add mode tap sniff0 ovs-vsctl add-port br-int sniff0 -- --id=@p get port sniff0 -- --id=@m create mirror name=m0 select-all=true output-port=@p -- set bridge br-int mirrors=@m fae36943-2ca7-4914-9679-0b881cd062d8 Its created, but how do I assign this sniffing interface to a ovirt VM? also, how can I create sniffing ports listening only on a subset of interfaces if they get dynamically created / removed? vnet6 points to host A now, but after shutting it down starting a few other VMs it will point to host B... How do I control to what vm the vnetX nic gets assigned?
Maybe you can create a host hook, if you find a solution I'd be really interested as it would solve a lot of problems for us. Regards, Paul S. ________________________________________ From: 0pk0de@riseup.net <0pk0de@riseup.net> Sent: 15 November 2018 09:16 To: users@ovirt.org Subject: [ovirt-users] OVS and Ovirt integration questions Hello, After having integrated OVS with Ovirt and enabled it as default network provider I am facing the following issues. I can see with "ovs-vsctl show" that the virtual switch / bridge called "br-int" is created. I can see interfaces being added / removed to it as I start / stop VMs. [root@******* ~]# ovs-vsctl show 78e883f9-f074-4292-afce-bb829ded856b Bridge br-int fail_mode: secure Port "vnet6" Interface "vnet6" Port br-int Interface br-int type: internal Port "vnet4" Interface "vnet4" ovs_version: "2.9.0" Now I for example want to create a new interface as shown: ip tuntap add mode tap sniff0 ovs-vsctl add-port br-int sniff0 -- --id=@p get port sniff0 -- --id=@m create mirror name=m0 select-all=true output-port=@p -- set bridge br-int mirrors=@m fae36943-2ca7-4914-9679-0b881cd062d8 Its created, but how do I assign this sniffing interface to a ovirt VM? also, how can I create sniffing ports listening only on a subset of interfaces if they get dynamically created / removed? vnet6 points to host A now, but after shutting it down starting a few other VMs it will point to host B... How do I control to what vm the vnetX nic gets assigned? _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/FLR67ZYMFONHH3... To view the terms under which this email is distributed, please go to:- http://disclaimer.leedsbeckett.ac.uk/disclaimer/disclaimer.html
On Thu, Nov 15, 2018 at 10:17 AM <0pk0de@riseup.net> wrote:
Hello,
After having integrated OVS with Ovirt and enabled it as default network provider I am facing the following issues.
We are using OVN as network provider.
I can see with "ovs-vsctl show" that the virtual switch / bridge called "br-int" is created. I can see interfaces being added / removed to it as I start / stop VMs.
[root@******* ~]# ovs-vsctl show 78e883f9-f074-4292-afce-bb829ded856b Bridge br-int fail_mode: secure Port "vnet6" Interface "vnet6" Port br-int Interface br-int type: internal Port "vnet4" Interface "vnet4" ovs_version: "2.9.0"
Now I for example want to create a new interface as shown:
ip tuntap add mode tap sniff0 ovs-vsctl add-port br-int sniff0 -- --id=@p get port sniff0 -- --id=@m create mirror name=m0 select-all=true output-port=@p -- set bridge br-int mirrors=@m fae36943-2ca7-4914-9679-0b881cd062d8
Its created, but how do I assign this sniffing interface to a ovirt VM?
If I understand your intentions correctly from now on you just need to add OVN network connected to physical 'sniff0'. This can be done via UI in Networks -> New network -> Check "Create on physical network" -> Select correct provider -> Change to "Custom" and type the 'sniff0' in the textbox. From now on you can use vNIC profile of this network and assign it to desired VM.
also, how can I create sniffing ports listening only on a subset of interfaces if they get dynamically created / removed? vnet6 points to host A now, but after shutting it down starting a few other VMs it will point to host B...
Adding @Dominik <dholler@redhat.com>
How do I control to what vm the vnetX nic gets assigned? _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/FLR67ZYMFONHH3...
Hopefully this helps. Regards, Ales Musil -- ALES MUSIL Associate Software Engineer - rhv network Red Hat EMEA <https://www.redhat.com/> amusil@redhat.com IM: amusil <https://red.ht/sig>
On Fri, Nov 16, 2018 at 10:26 AM Ales Musil <amusil@redhat.com> wrote:
On Thu, Nov 15, 2018 at 10:17 AM <0pk0de@riseup.net> wrote:
Hello,
After having integrated OVS with Ovirt and enabled it as default network provider I am facing the following issues.
We are using OVN as network provider.
I can see with "ovs-vsctl show" that the virtual switch / bridge called "br-int" is created. I can see interfaces being added / removed to it as I start / stop VMs.
[root@******* ~]# ovs-vsctl show 78e883f9-f074-4292-afce-bb829ded856b Bridge br-int fail_mode: secure Port "vnet6" Interface "vnet6" Port br-int Interface br-int type: internal Port "vnet4" Interface "vnet4" ovs_version: "2.9.0"
Now I for example want to create a new interface as shown:
ip tuntap add mode tap sniff0 ovs-vsctl add-port br-int sniff0 -- --id=@p get port sniff0 -- --id=@m create mirror name=m0 select-all=true output-port=@p -- set bridge br-int mirrors=@m fae36943-2ca7-4914-9679-0b881cd062d8
Its created, but how do I assign this sniffing interface to a ovirt VM?
If I understand your intentions correctly from now on you just need to add OVN network connected to physical 'sniff0'. This can be done via UI in Networks -> New network -> Check "Create on physical network" -> Select correct provider -> Change to "Custom" and type the 'sniff0' in the textbox. From now on you can use vNIC profile of this network and assign it to desired VM.
also, how can I create sniffing ports listening only on a subset of interfaces if they get dynamically created / removed? vnet6 points to host A now, but after shutting it down starting a few other VMs it will point to host B...
Matching the interfaces by name is problematic, but I assume you are more interested about sniffing a specific vm, or a specific interface (with a known mac) You could use the vdsm hooks for this. Every time you plug/unplug an interface, the vdsm host will look for hook scripts inside: /usr/libexec/vdsm/hooks/after_nic_hotplug /usr/libexec/vdsm/hooks/after_nic_hotunplug and execute them after the nic is plugged/unplugged. Inside the scripts you can retrieve the information about the vm, and the plugged nic. A sample script would look as follows: ------------------------------------- #!/usr/bin/python import os vm_id = os.environ['vmId'] nic_xml_file = os.environ['_hook_domxml'] -------------------------------------- with the vm_id being the vm uuid: and the nic xml file containing something like: <?xml version="1.0" encoding="utf-8"?><interface type="bridge"><model type="virtio"/><link state="up"/><source bridge="br-int"/><alias name="ua-ebf987b0-271f-42c9-83fd-d09630a524a2"/><mac address="56:6f:7d:07:00:08"/><mtu size="1442"/><bandwidth/><virtualport type="openvswitch"><parameters interfaceid="aa8660f1-cf11-4c9c-97d6-7ef852037ca7"/></virtualport></interface> You could identify you port by mac or interfaceid (id of the ovn logical port). You could now use this information to adjust your mirror entries.
Adding @Dominik <dholler@redhat.com>
How do I control to what vm the vnetX nic gets assigned? _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/FLR67ZYMFONHH3...
Hopefully this helps.
Regards, Ales Musil --
ALES MUSIL Associate Software Engineer - rhv network
Red Hat EMEA <https://www.redhat.com/>
amusil@redhat.com IM: amusil <https://red.ht/sig> _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/site/privacy-policy/ oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/MQRL62MDKSUENA...
participants (4)
-
0pk0de＠riseup.net -
Ales Musil -
Marcin Mirecki -
Staniforth, Paul