2
votes
1answer
54 views

Any way to increase the libvirt guest network response time?

We are running a number of Debian Wheezy VMs on top of Ubuntu Servers 12.04.4 / Libvirt 0.9.8-2ubuntu17.17 The host is connected to the network through a trunk. It then split the VLANs and create a ...
1
vote
2answers
127 views

How do I configure bridged networking for VMs

I'm setting up a KVM virtualization server in CentOS 6. How do I configure bridged networking? (I think I need network interface eth0 to be accessible to VMs) I have tried to follow this guide: How ...
2
votes
1answer
193 views

Ubuntu/KVM Bridge Interface IP Assignment

I have a Ubuntu 12.04 LTS machine running KVM/libvirt. It has two physical ethernet interfaces. I have dedicated eth0 as the primary interface and configured bridging on eth1 for my VMs. The KVM host ...
4
votes
1answer
188 views

libvirt guest cannot reach outside world

My server connects to the public internet via eth0 (50.131.xxx.xxx). The same server connects to the LAN via eth1 (192.168.138.1 on 192.168.138.0/24) On the same server, I run libvirt, which created ...
1
vote
1answer
439 views

Kvm Guest Network Unreachable

I have a kvm setup with several guest vms running ubuntu. For some reason I cannot get traffic through port 80 from the guests to the outside anylonger. The other way round works just fine, the ...
1
vote
1answer
145 views

Changing the mac address in a libvirt xml config file breaks network connectivity for the guest

I'm using Xen with libvirt and trying to set it up on a bridged interface. I am able to install an OS and everything works as I would expect. If I save the xml output from "virsh dumpxml guest", edit ...
1
vote
1answer
136 views

Network traffic is not being forwarded from a VM to the network using a bridged interface with Xen + libvirt

I'm having trouble getting network access from a VM that I'm running using Xen and libvirt. I've been trying different things and reading similar posts online for a couple of days but I'm really stuck ...
0
votes
1answer
146 views

Debian Squeeze KVM - No Matter How I Setup Bridge, No Connectivity on Guest

I'm attempting to setup libvirt KVM guests on my server, and I've been messing around for two days now trying to get the guest networking working. So far, I haven't gotten anywhere. My network is ...
1
vote
1answer
128 views

Apply libvirt nwfilter without editing of XML

Is it possible to apply libvirt's network filter to a KVM guest without manually editing the XML (for use in scripts)? Or is there any easy way of pushing the network filter configuration into ...
1
vote
1answer
602 views

KVM-qemu libvirt multiple interfaces in vms - how to control?

Running Ubuntu 12.04 we have 12 interfaces on the hypervisor which we want to expose in each vm. When we use only interface elements in the xml, we get the interfaces but we can't predict/control ...
1
vote
2answers
872 views

Accessing guests on virtual network when connected to host via PPTP

I'm setting up a development machine which runs Ubuntu 12.04 and KVM for virtualization. I have a guest running Ubuntu 12.04 which can be accessed from the host via its IP address which is assigned by ...
2
votes
2answers
3k views

KVM/Libvirt bridged/routed networking not working on newer guest kernels

I have a dedicated server running Debian 6, with Libvirt (0.9.11.3) and Qemu-KVM (qemu-kvm-1.0+dfsg-11, Debian). I am having a problem getting bridged/routed networking to work in KVM guests with ...
1
vote
2answers
315 views

Downloads stuck from a VM run by libvirt (kvm) on Ubuntu 10.04 LTS

I first wrote my problem on stackoverflow thinking it was a Maven proxy software problem. But I realised it was more a problem with my virtualization stack (libvirt 0.7.5-5ubuntu27.19 / kvm ...
1
vote
1answer
272 views

Libvirt: create a network bridged to the LAN (eth0)

I have a Xen-enabled host and Libvirtd running on a machine. The LAN (on eth0) is 192.168.1.0/24, and the host has 192.168.1.174 as its main IP address. Now what I want to do is to create a domU ...
2
votes
1answer
2k views

Bandwidth monitoring on KVM

Is it possible to monitor/limit bandwidth for KVM guests? I'd like to give people VMs on my server but I want to be careful not to go over my monthly bandwidth limit. The only places I can find that ...
2
votes
4answers
541 views

physical to virtual (kvm) migration with saving IP of guest and reusing it at host

I want to do a physical-to-virtual migration of BSD server, saving the IP address. The destination virtual host is Linux/KVM. The current setup: I had a BSD server with failed Hardware. I have just ...
4
votes
2answers
4k views

Routing networking on kvm

There are a lot of configuration used for Kvm-networking. But i'm not able to get to the guest from the host or outside. I'm working on Ubuntu 11.04. On the guest i've a WindowsXp with dhcp. I want ...
3
votes
2answers
1k views

Network freezes with KVM/libvirt and ip_forward = 1

I'm using KVM and libvirt and experience small network freezes on the host and the guests every 2-3 minutes or so. The freezes last 1-2 seconds. The used OS is Ubuntu 10 LTS server edition. I'm ...
2
votes
1answer
1k views

How do I create a bridged virtual network for libvirt+KVM+ubuntu-server the easy way?

I see lots of documentation on how to manually set up a network bridge and then manually add vm's tun devices to these bridges and then write a shell script that glues it all together. lots of work, ...
2
votes
1answer
549 views

two physical kvm hosts with multiple guests, private network

I have two physical hosts which run debian lenny with kvm. They have one nic which connects to the internet and another nic which is a cross-link to each other, for a faster private net. On this kvm ...
3
votes
1answer
484 views

libvirtd kvm networking on Centos5.4

I've got KVM installed on CentOS 5.4, and am attempting to set up a virtual network to allow each VM to communicate with services on the host, namely DHCP to allow PXE boot installations. I'm having ...