Re: [libvirt] Re: virsh/virt-install for dummies

On Fri, Aug 15, 2008 at 8:02 PM, Daniel P. Berrange <berrange(a)redhat.com&gt; wrote: > On Fri, Aug 15, 2008 at 07:47:32PM +0900, Jun Koi wrote: > >> On Fri, Aug 15, 2008 at 7:36 PM, Daniel P. Berrange <berrange(a)redhat.com&gt; wrote: >> >>> On Fri, Aug 15, 2008 at 07:32:48PM +0900, Jun Koi wrote: >>> >>>> On Fri, Aug 15, 2008 at 7:30 PM, Jun Koi <junkoi2004(a)gmail.com&gt; wrote: >>>> >>>>> Hi, >>>>> >>>>> I am frustrated searching for a quick-start documentation for virsh, >>>>> just to no avail. Any help is greatly appreciated! >>>>> >>>>> Here is what I did: >>>>> - Compile and install libvirt, virt-manager, virt-install and >>>>> virt-viewer from source code. This is done (on Ubuntu 8.04). >>>>> - Now I want to do install a new VM with QEMU or KVM. I got the below >>>>> error with virt-install: >>>>> >>>>> >>>>> # virt-install -c qemu:///system --name jeos2 --ram 500 --file >>>>> img.jeos2 --cdrom jeos-8.04.1-jeos-i386.iso >>>>> Fri, 15 Aug 2008 19:19:10 ERROR virConnectOpen() failed >>>>> Traceback (most recent call last): >>>>> File "/usr/bin/virt-install", line 496, in <module> >>>>> main() >>>>> File "/usr/bin/virt-install", line 345, in main >>>>> conn = cli.getConnection(options.connect) >>>>> File "/usr/lib/python2.5/site-packages/virtinst/cli.py", line 92, in >>>>> getConnection >>>>> return libvirt.open(connect) >>>>> File "/usr/lib/python2.5/site-packages/libvirt.py", line 139, in open >>>>> if ret is None:raise libvirtError('virConnectOpen() failed') >>>>> libvirtError: virConnectOpen() failed >>>>> >>>>> >>>>> >>>>> How to fix this? Perhaps I need to run libvirtd before using virsh??? >>>>> >>>> I tried to run libvirtd to see if that fixes the problem, but got the >>>> below error: >>>> >>> Yes, for QEMU you need to have the libvirtd daemon up & running. Before >>> attempting to connect with virt-install, make sure you can connect with >>> virsh, eg as a good test run: >>> >>> virsh --connect qemu:///system capabilities >>> >>> > >> Then I believe this should be fixed: users should be able to run >> libvirtd without brctl installed. I can still use QEMU/KVM before on >> my machine without it, so I find no reason why it stop working now >> with virt-install. >> > There's nothing to fix - this is simply a deployment issue - the default > installation we provide sets up a 'default' virtual network which provides > guests with a NAT based network connection out of the box which requires > bridgeutils. If you don't want to use that then you can remove this default > config from /etc/libvirt/qemu/networks. All the QEMU network configs without > use of bridge-utils are pretty crap though, hence why we setup this default > networking config for people > > >> OK, now I install bridge-utils, and run libvirtd. After that, I tried >> virt-install, but still got error like below: >> >> How to fix this now? >> > Debug it with 'virsh' first to make sure the basic functionality is working > and then go onto virt-install. > Yes, virsh works well: it returns few pages of xml data. However, "virt-install" still has problem like below. It seems to have some thing with Xen? I dont install Xen on my machine. Could you give some hints to fix this?? Thanks, J # LIBVIRT_DEBUG=1 virt-install -c qemu:///system --name jeos2 --ram 500 --file img.jeos2 --cdrom jeos-8.04.1-jeos-i386.iso