[Users] no VM network connection

[Assaf Muller]

If you intend to produce data following your stress tests, please share.

Assaf Muller, Cloud Networking Engineer 
Red Hat 

----- Original Message -----
From: "William Kwan" <potatok at yahoo.com>
To: "Dan Kenigsberg" <danken at redhat.com>, "Assaf Muller" <amuller at redhat.com>
Cc: users at ovirt.org
Sent: Thursday, January 9, 2014 11:26:50 PM
Subject: Re: [Users] no VM network connection

Thanks for the tips. Yes, after tcpdump left and right, we found an issue.  It is definitely an user error.

BTW, thanks for all the assistance.  We have a promising setup working so far.  We are running tests and putting more stress to test it.

Thanks
Will




On Thursday, January 9, 2014 11:53 AM, Dan Kenigsberg <danken at redhat.com> wrote:
 
On Thu, Jan 09, 2014 at 09:18:15AM -0500, Assaf Muller wrote:
> Hi Will,
> 
> Do these new faulty VMs get IP from the DHCP server on subnet1? If so, can they ping their default gateway?
> 
> If you SSH into the hypervisor that hosts the new VM, do you see a new 'vnetX' device for it? If you type brctl showmacs <name of VM bridge>, do you see the MAC of the NIC of the VM that is connected to the VM network?
> 
> If you tcpdump bond1, do you see any outgoing VM traffic?

Also, if you set an explicit IP address within the guest and try to ping
outside of it - cun you see packets travelling out of the vnetX and into
the connected bridge?


> 
> Assaf Muller, Cloud Networking Engineer 
> Red Hat 
> 
> 
> ----- Original Message -----
> From: "William Kwan" <potatok at yahoo.com>
> To: users at ovirt.org
> Sent: Wednesday, January 8, 2014 8:47:51 PM
> Subject: [Users] no VM network connection
> 
> Hi all, 
> 
> Need some pointers here. I created one VM successfully with network connection. New VMs and clone can't seem to get network connections. 
> 
> I have ovirt 3.3.2-1.el6 on CentOS6.5. Two virtualization nodes are on 6.5 with GlusterFS. 
> Both nodes have bond0 on management subnet and bond1 on subnet1. 
> bond0 has an IP assigned and bond1 has no IP assigned (just link up) 
> 
> I created a VM with two NICs attached to two the logical networks. This VM1 works fine with both network connections. This VM can be started on either node fine with network connections. 
> 
> When I tried to build a new VM or build one from the template of VM1, I can't seem to get another network connection working on these new VMs. Yes, they have logical network attached to them.