[CentOS-virt] Xen 4.6.3-9 release

[Brandon Shoemaker]

Hi list,

 

Xen 4.6.3-9 will be general release soon? 

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Re: [CentOS-virt] Network isolation for KVM guests

[Nux!]

Use libvirt with mac/ip spoofing enabled.

https://libvirt.org/formatnwfilter.html

https://libvirt.org/firewall.html

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- Original Message -
> From: "C. L. Martinez" 
> To: centos-virt@centos.org
> Sent: Thursday, 30 March, 2017 15:06:58
> Subject: [CentOS-virt] Network isolation for KVM guests

> Hi all,
> 
> What options exists under CentOS hosts to work with isolated networks?. For
> example, on BSD systems it is really trivial. In FreeBSD you can use setfib
> tools and on OpenBSD it is possible to use rdomain options. In 30 secs it is
> possible to work with isolated networks and assign process, ip address and
> routes (hidden from the main route table and ip addresses), etc.
> 
> But I can't find a similar solution for CentOS environments. I have found two
> similar options:
> 
> a/ Network namespaces (but doesn't provides a real network isolation)
> b/ VRF (but it is supported only for kernels 4.8 and up)
> 
> Any ideas?
> 
> Thanks.
> 
> --
> Greetings,
> C. L. Martinez
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Re: [CentOS-virt] Network isolation for KVM guests

[Kristián Feldsam]

for KVM guests I use VLANs

S pozdravem Kristián Feldsam
Tel.: +420 773 303 353
E-mail.: ad...@feldhost.cz

www.feldhost.cz - FeldHost poskytuje kvalitní hostingové a serverové služby za 
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> On 30 Mar 2017, at 16:06, C. L. Martinez  wrote:
> 
> Hi all,
> 
> What options exists under CentOS hosts to work with isolated networks?. For 
> example, on BSD systems it is really trivial. In FreeBSD you can use setfib 
> tools and on OpenBSD it is possible to use rdomain options. In 30 secs it is 
> possible to work with isolated networks and assign process, ip address and 
> routes (hidden from the main route table and ip addresses), etc.
> 
> But I can't find a similar solution for CentOS environments. I have found two 
> similar options:
> 
> a/ Network namespaces (but doesn't provides a real network isolation)
> b/ VRF (but it is supported only for kernels 4.8 and up)
> 
> Any ideas?
> 
> Thanks.
> 
> -- 
> Greetings,
> C. L. Martinez
> ___
> CentOS-virt mailing list
> CentOS-virt@centos.org
> https://lists.centos.org/mailman/listinfo/centos-virt

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[CentOS-virt] Network isolation for KVM guests

[C. L. Martinez]

Hi all,

 What options exists under CentOS hosts to work with isolated networks?. For 
example, on BSD systems it is really trivial. In FreeBSD you can use setfib 
tools and on OpenBSD it is possible to use rdomain options. In 30 secs it is 
possible to work with isolated networks and assign process, ip address and 
routes (hidden from the main route table and ip addresses), etc.

 But I can't find a similar solution for CentOS environments. I have found two 
similar options:

 a/ Network namespaces (but doesn't provides a real network isolation)
 b/ VRF (but it is supported only for kernels 4.8 and up)

 Any ideas?

Thanks.

-- 
Greetings,
C. L. Martinez
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Re: [CentOS-virt] 2.6.0-28.el7_3.6.1 e1000 problem

[Dmitry Melekhov]

30.03.2017 10:52, Dmitry Melekhov пишет:

Hello!

We tried to move Windows 2003 VM with e1000 driver from Centos 7 which 
runs qemu-kvm-0.12.1.2-2.491.el6_8.7.x86_64
to Centos 7 with qemu-kvm-ev-2.6.0-28.el7_3.6.1.x86_64 and we got 
problems-

tcp sessions, namely smb connections, randomly drops.

We didn't test previous qemu-rhev with this VM, so we don't know how 
it works in them.


Could you tell me is this known problem? Any workaround except 
switching to virtio?


Thank you!


Sorry, previous host system was Centos 6 with default qemu...


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[CentOS-virt] 2.6.0-28.el7_3.6.1 e1000 problem

[Dmitry Melekhov]

Hello!

We tried to move Windows 2003 VM with e1000 driver from Centos 7 which 
runs qemu-kvm-0.12.1.2-2.491.el6_8.7.x86_64

to Centos 7 with qemu-kvm-ev-2.6.0-28.el7_3.6.1.x86_64 and we got problems-
tcp sessions, namely smb connections, randomly drops.

We didn't test previous qemu-rhev with this VM, so we don't know how it 
works in them.


Could you tell me is this known problem? Any workaround except switching 
to virtio?


Thank you!

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