Re: [Users] no VM network connection
If you intend to produce data following your stress tests, please share. Assaf Muller, Cloud Networking Engineer Red Hat - Original Message - From: William Kwan pota...@yahoo.com To: Dan Kenigsberg dan...@redhat.com, Assaf Muller amul...@redhat.com Cc: users@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 dan...@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 pota...@yahoo.com To: users@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. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] no VM network connection
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? Assaf Muller, Cloud Networking Engineer Red Hat - Original Message - From: William Kwan pota...@yahoo.com To: users@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. Thanks in advance, Will ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] no VM network connection
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 pota...@yahoo.com To: users@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. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
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 dan...@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 pota...@yahoo.com To: users@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. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
