Hello, I'm testing ovirt node, both 4.1.5 and 4.1.6rc2. I see that in both versions the network stack is configured with NetworkManager enabled. With plain CentOS I always disabled NetworkManager and only used classical network service alone, so I have not background with NM, related to hypervisor. I have configured a vlan (untagged) for VMs, using bonding mode=4 (802.3ad). I have some problems with my VMs: they are reachable from some parts and not from others. In parallel I have already asked network guys to crosscheck network configurations of the datacenter, but I would like to have confirmation that other ones are already using with success the combination of: - NetworkManager on hypervisor - bonding mode = 4 for VMs traffic Another question for another aspect I never understood: with an environment in the past (before 3.5 times if I remember well) I used 802.3ad but I had to set lacp_rate=1 (fast) because I had connection problems with the default lacp_rate=0 (slow) parameter. I see that still the default is lacp_rate=0 Could it be the same this time? Is there any reason to set default lacp_rate=0 in oVirt (or the reverse... ;-)? Thanks in advance, Gianluca
Just use the UI to manage your network interfaces. On Wed, Sep 13, 2017 at 6:23 AM, Gianluca Cecchi <gianluca.cecchi@gmail.com> wrote:
Hello, I'm testing ovirt node, both 4.1.5 and 4.1.6rc2. I see that in both versions the network stack is configured with NetworkManager enabled.
With plain CentOS I always disabled NetworkManager and only used classical network service alone, so I have not background with NM, related to hypervisor.
I have configured a vlan (untagged) for VMs, using bonding mode=4 (802.3ad).
I have some problems with my VMs: they are reachable from some parts and not from others.
In parallel I have already asked network guys to crosscheck network configurations of the datacenter, but I would like to have confirmation that other ones are already using with success the combination of:
- NetworkManager on hypervisor - bonding mode = 4 for VMs traffic
Another question for another aspect I never understood: with an environment in the past (before 3.5 times if I remember well) I used 802.3ad but I had to set lacp_rate=1 (fast) because I had connection problems with the default lacp_rate=0 (slow) parameter. I see that still the default is lacp_rate=0 Could it be the same this time? Is there any reason to set default lacp_rate=0 in oVirt (or the reverse... ;-)?
Thanks in advance, Gianluca
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On Wed, Sep 13, 2017 at 1:43 PM, Donny Davis <donny@fortnebula.com> wrote:
Just use the UI to manage your network interfaces.
Just used and prolems arose... hence the question ;-) In the mean time, as I have no control on network configuration from a switch point of view, I have asked network guys to verify. My question was to verify that NM + 802.3AD is used ok from others
As long as the switch is setup for 802.3AD (LACP) then you should be fine. I used the UI to setup my bond's and here is the output from my hypervisor [root@virtnode-3 ~]# systemctl status NetworkManager ● NetworkManager.service - Network Manager Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled) Active: active (running) since Mon 2017-09-11 19:07:06 UTC; 1 day 16h ago Docs: man:NetworkManager(8) Main PID: 952 (NetworkManager) CGroup: /system.slice/NetworkManager.service └─952 /usr/sbin/NetworkManager --no-daemon Sep 11 20:12:15 virtnode-3.fortnebula.com NetworkManager[952]: <info> [1505160735.0612] ifcfg-rh: Ignoring connection /etc/sysconfig/network-scripts/ifcfg-storage (53b19d46-6b08-f...me:storage. Sep 11 20:12:16 virtnode-3.fortnebula.com NetworkManager[952]: <info> [1505160736.8563] device (p3p1): link connected Sep 11 20:12:17 virtnode-3.fortnebula.com NetworkManager[952]: <info> [1505160737.0798] device (p3p2): link connected Sep 11 20:12:17 virtnode-3.fortnebula.com NetworkManager[952]: <info> [1505160737.0839] device (bond0): link connected Sep 11 20:12:17 virtnode-3.fortnebula.com NetworkManager[952]: <info> [1505160737.7324] ifcfg-rh: new connection /etc/sysconfig/network-scripts/ifcfg-bond0.600 (cad7be9f-9e8c-bcab-4...m bond0.600") Sep 11 20:12:17 virtnode-3.fortnebula.com NetworkManager[952]: <info> [1505160737.7324] ifcfg-rh: Ignoring connection /etc/sysconfig/network-scripts/ifcfg-bond0.600 (cad7be9f-9e8c-b...me:bond0.600. Sep 11 20:12:17 virtnode-3.fortnebula.com NetworkManager[952]: <info> [1505160737.7533] manager: (bond0.600): new VLAN device (/org/freedesktop/NetworkManager/Devices/37) Sep 11 20:12:17 virtnode-3.fortnebula.com NetworkManager[952]: <info> [1505160737.7705] manager: (storage): new Bridge device (/org/freedesktop/NetworkManager/Devices/38) Sep 11 20:12:17 virtnode-3.fortnebula.com NetworkManager[952]: <info> [1505160737.7905] device (bond0.600): link connected Sep 11 20:12:17 virtnode-3.fortnebula.com NetworkManager[952]: <info> [1505160737.8477] device (storage): link connected Hint: Some lines were ellipsized, use -l to show in full. [root@virtnode-3 ~]# rpm -qa vdsm vdsm-4.19.28-1.el7.centos.x86_64 [root@virtnode-3 ~]# On Wed, Sep 13, 2017 at 7:46 AM, Gianluca Cecchi <gianluca.cecchi@gmail.com> wrote:
On Wed, Sep 13, 2017 at 1:43 PM, Donny Davis <donny@fortnebula.com> wrote:
Just use the UI to manage your network interfaces.
Just used and prolems arose... hence the question ;-)
In the mean time, as I have no control on network configuration from a switch point of view, I have asked network guys to verify. My question was to verify that NM + 802.3AD is used ok from others
On Wed, Sep 13, 2017 at 1:53 PM, Donny Davis <donny@fortnebula.com> wrote:
As long as the switch is setup for 802.3AD (LACP) then you should be fine. I used the UI to setup my bond's and here is the output from my hypervisor
OK, thanks. I suppose bond0 is where you have your lacp bonding What do you get in output on your node with the command cat /proc/net/bonding/bond0 ? Could it do any difference to do 802.3ad on a tagged or untagged vlan? Thanks, Gianluca
participants (2)
-
Donny Davis -
Gianluca Cecchi