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[libvirt-users] dnsmasq not started when no dhcp enabled ?
by jbd 12 Mar '11

12 Mar '11

Hello everybody, i've defined a simple network, with no dhcp. I'd like to use dnsmasq only as a dns server. $ virsh net-dumpxml basicswitch <network> <name>basicswitch</name> <uuid>60f491d2-d6c4-6b57-8a50-081cace8dedc</uuid> <forward mode='nat'/> <bridge name='virbr1' stp='on' delay='0' /> <ip address='192.168.100.1' netmask='255.255.255.0'> </ip> </network> I start it : $ virsh net-start basicswitch Network basicswitch started $ virsh net-list Name State Autostart ----------------------------------------- basicswitch active no But i see no dnsmasq process : $ ps fax|grep dnsmas[q] Here the output of "virsh version" : $ virsh version Compiled against library: libvir 0.8.8 Using library: libvir 0.8.8 Using API: QEMU 0.8.8 Running hypervisor: QEMU 0.12.5 What is funny is that the dnsmasq process is created on another box with different version : $ virsh version Compiled against library: libvir 0.8.3 Using library: libvir 0.8.3 Using API: QEMU 0.8.3 Running hypervisor: QEMU 0.12.5 $ ps fax|grep dnsmas[q] 7104 ? S 0:00 dnsmasq --strict-order --bind-interfaces --pid-file=/var/run/libvirt/network/basicswitch.pid --conf-file= --listen-address 192.168.100.1 --except-interface lo Any advice on it ? Regards, Jean-Baptiste

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[libvirt-users] libvirt configuration problem
by Onkar Mahajan 12 Mar '11

12 Mar '11

Hi , I am getting errors while configuring libvirt to compile it from source. There is a error in libnl checking for UDEV... no checking whether to compile with macvtap support... yes checking whether to compile with virtual port support... no checking for LIBNL... no configure: error: libnl-devel >= 1.1 is required for macvtap support I have already installed the libnl library in /lib/ [root@localhost lib]# ls libnl* libnl.a libnl-cli.so.2 libnl-genl.so libnl-nf.a libnl-nf.so.2.0.0 libnl-route.so.2 libnl.so.2.0.0 libnl-cli.a libnl-cli.so.2.0.0 libnl-genl.so.2 libnl-nf.la libnl-route.a libnl-route.so.2.0.0 libnl-cli.la libnl-genl.a libnl-genl.so.2.0.0 libnl-nf.so libnl-route.la libnl.so libnl-cli.so libnl-genl.la libnl.la libnl-nf.so.2 libnl-route.so libnl.so.2 Please help me !! Regards, Onkar

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[libvirt-users] libvirt/kvm/qemu: pointopoint routed setup?
by Andreas Jellinghaus 12 Mar '11

12 Mar '11

Hi, can anyone give an example for a pointopoint routed setup? i.e. each virtual machine has one ip with pointopoint config to the host machine, on a private interface - thus the virtual machines can only talk to the host, which routes them and can use normal iptables for filtering all traffic. with xen this was a simple script doing ifconfig ${vif} ${main_ip} netmask 255.255.255.255 up ip route ${ipcmd} ${addr} dev ${vif} src ${main_ip} and an optional echo 1 >/proc/sys/net/ipv4/conf/${vif}/proxy_arp has someone implemented something like this with libvirt/kvm setup? can you give some pointers how to do this? I don't need high speed communication between the virtual machines, and the option to filter all traffic between them (without using the bridge netfilter tables) would be nice. Or is there a reason not to use such a setup, and a better option to implement this? Thanks for your help and best regards, Andreas Jellinghaus

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[libvirt-users] Migrating existing debian system to KVM/libvirt
by Randall Webstuff 12 Mar '11

12 Mar '11

I have a dying machine running debian etch that acts as a web/mail server that I would like to virtualize using debian/kvm/libvirt. Is it as simple as removing the hard-disk (multiple ext2/ext3 partitions) from the dying machine into my newer server and then writing a custom xml config file? Is there a tutorial on doing this somewhere? Thanks. Randy

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[libvirt-users] client certificate path hard coded?
by Anthony Goddard 12 Mar '11

12 Mar '11

Hi all, I'm trying to figure out how to get my desktop talking to two libvirt hosts using qemu+tls and I've read that virsh relies on hard coded paths to the certificates.. which seems to be true. Is there a way to tell virsh to use a different path to a certificate, or another way people solve this presently? Cheers, Ant

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[libvirt-users] libvirt and phyp driver (Power Hypervisor guests)
by Boninsegna, Werner (Werner, ES-Best-Shore-Services-China-SH) 11 Mar '11

11 Mar '11

Hi all, I would like to ask about the status of the phyp driver to manage Power Hypervisor guests. According the documentation [1] the driver is supported, however it does not show up on the main driver page [2]. Has somebody already had experience using this driver in a productive or testing environment? [1] http://libvirt.org/guide/html/Application_Development_Guide-Connections-URI… [2] http://libvirt.org/drivers.html Kind regards, Werner --- Werner Boninsegna HP Enterprise Services

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[libvirt-users] unable to connect to libvirtd at '*': No route to host
by Christoph Raible 11 Mar '11

11 Mar '11

Hi @all, I have the following systems: AMD Processor Scientific Linux 6.0 Kernelversion: 2.6.32-71.18.2.el6.x86_64 KVM / Libvirt out of the repository I've setup my TLS-Certificates with the following howto /http://wiki.libvirt.org/page/TLSSetup/ Now I want to connect the servers with /virsh -c qemu+tls://nebula3/system/(nebula3 is the hostname) but the following error message always is displayed: /error: unable to connect to libvirtd at 'nebula3': No route to host error: failed to connect to the hypervisor/ SELinux is disabled and the servers are in the same IP-Range (ping works fine) Passwordless ssh-login also works fine! If I connect to a server with qemu+ssh://nebula3/system all wroks fine... Installation with virt-manager an bridged networkinterface also works fine... Did anyone of you have an idea where my problem is? Thanks for Help :) Regards, Christoph -- Vorstand/Board of Management: Dr. Bernd Finkbeiner, Dr. Roland Niemeier, Dr. Arno Steitz, Dr. Ingrid Zech Vorsitzender des Aufsichtsrats/ Chairman of the Supervisory Board: Michel Lepert Sitz/Registered Office: Tuebingen Registergericht/Registration Court: Stuttgart Registernummer/Commercial Register No.: HRB 382196

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[libvirt-users] venet as network device for openvz based VMs
by knawnd＠gmail.com 11 Mar '11

11 Mar '11

Hi! Is there any way to use venet (http://wiki.openvz.org/Venet) for openvz based VM via libvirt? Thanks! Nikolay.

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[libvirt-users] ifname in openvz container
by knawnd＠gmail.com 10 Mar '11

10 Mar '11

Hi! Is there any way to specify ethernet device name to be created inside the openvz container? I could find such info at http://libvirt.org/formatdomain.html#elementsNICS. If I do as below I get br0 as ethernet device inside VM whereas I'd like it to be eth0. $ cat ovz.xml <domain type='openvz' id='144'> <name>144</name> <uuid>0071c128-58b4-4688-be17-1e062a22b36c</uuid> <vcpu>1</vcpu> <memory>524288</memory> <os> <type>exe</type> <init>/sbin/init</init> </os> <devices> <filesystem type='template'> <source name='centos-5-x86'/> <target dir='/'/> </filesystem> <interface type='bridge'> <source bridge='br0'/> </interface> </devices> </domain> $ virsh create ovz.xml Domain 144 created from ovz.xml $ grep -i netif /etc/vz/conf/144.conf NETIF="ifname=br0,bridge=br0,mac=52:54:00:74:DD:F3,host_ifname=veth144.0,host_mac=52:54:00:06:78:76" br0 is a bridge on the server (CT0). But I would like to assign ethernet device inside VM as eth0 i.e. ifname in VM config has to be eth0. ovzkernel release is 2.6.18-194.26.1.el5.028stab081.1 OS is CentOS 5.5, libvirt/virsh version is 0.8.8. Best regards, Nikolay.

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[libvirt-users] diskspace and diskinodes tag for openvz
by knawnd＠gmail.com 10 Mar '11

10 Mar '11

Hi! as far as I understood from "xml format for openvz driver" thread available at [1] it should be possible to specify via libvirt disk size and disk inodes for openvz VM.But the following device section in VM xml description doesn't set disksize and diskinodes properly (it looks like those parameters are taken from default OpenVZ config and not as they are specified in libvirt tags): <devices> <filesystem type='template'> <source name='centos-5-x86'/> <target dir='/'/> <quota type="size" max="100000"/> <quota type="inodes" max="200000"/> </filesystem> </devices> Could anyone manage to set mentioned OpenVZ parameters properly? I am using libvirt-0.8.8, CentOS 5.5, vzctl version is 3.0.26-1. Thanks! Nikolay. [1] http://www.mail-archive.com/libvir-list@redhat.com/msg07329.html

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