| # cat /etc/centos-release CentOS release 6.3 (Final) # uname -rn centos6-1.localdomain 2.6.32-279.2.1.el6.x86_64 |
| # yum groupinstall Virtulization "Virtualization Platform" "Virtualization Client" "Virtualization Tools" |
| # /usr/libexec/qemu-kvm --version QEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2), Copyright (c) 2003-2008 Fabrice Bellard # virt-manager --version 0.9.0 # libvirtd --version libvirtd (libvirt) 0.9.10 |
start libvirtd
| # /etc/init.d/libvirtd start Starting libvirtd daemon: [ OK ] |
connect to hypervisor with virsh to confirm whether or not libvirtd and virsh work.
| # virsh --connect qemu:///system Welcome to virsh, the virtualization interactive terminal. Type: 'help' for help with commands 'quit' to quit virsh # quit |
connect to the hypervisor with root user.
If you try this with regular users , you will see the following error
| $ LANG=C virsh --connect qemu:///system error: authentication failed: Authorization requires authentication but no agent is available. error: failed to connect to the hypervisor |
Same issue will occur with virt-manager.
root user
| # virt-manager |
connect to the hypervisor
non root user
| $ virt-manager |
can’t connect
error messages are like this:
| File "/usr/lib64/python2.6/site-packages/libvirt.py", line 102, in openAuth if ret is None:raise libvirtError('virConnectOpenAuth() failed') libvirtError: authentication failed: Authorization requires authentication but no agent is available. |
add a bridge interface ( not mandatory )
trun on network and turn off NetworkManager.
| # chkconfig NetworkManager off # chkconfig network on # chkconfig --list | grep -i network NetworkManager 0:off 1:off 2:off 3:off 4:off 5:off 6:off network 0:off 1:off 2:on 3:on 4:on 5:on 6:off |
I’ll associate eth0 with br0.
| # pwd /etc/sysconfig/network-scripts # cp ifcfg-eth0 ifcfg-br0 |
edit ifcfg-eth0 like this:
| # egrep -v ^# ifcfg-eth0 TYPE=Ethernet DEFROUTE=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no NAME="Auto eth0" DEVICE="eth0" UUID=zzz ONBOOT=yes HWADDR=zz BRIDGE="br0" |
edit ifcfg-br0 like this:
| # egrep -v ^# ifcfg-br0 TYPE=Bridge BOOTPROTO=none DEFROUTE=yes IPV4_FAILURE_FATAL=yes IPV6INIT=no NAME="br0" DEVICE="br0" UUID=zz ONBOOT=yes HWADDR=zz IPADDR=x.x.x.x PREFIX=24 GATEWAY=z.z.z.z DNS1=y.y.y.y |
stop NetworkManager and start network.
| # /etc/init.d/NetworkManager stop;/etc/init.d/network restart |
Okay , I could create bridge interface which is associated with eth0.
| # brctl show bridge name bridge id STP enabled interfaces br0 8000.002655e1aefa no eth0 virbr0 8000.525400fd7ade yes virbr0-nic |
[ build a CentOS 6 VM with virt-manager and SPICE ]
install spice packages
| # yum install spice-server spice-client spice-protocol –y |
change display settings to Spice from VNC
| # virsh list --all Id Name State ---------------------------------------------------- 1 centos6-64-1 running # virsh dumpxml 1 | grep -i spice <channel type='spicevmc'> <target type='virtio' name='com.redhat.spice.0'/> <graphics type='spice' port='5900' autoport='yes' keymap='ja'/> |
connect to the VM with spice client
| # spicec -h 127.0.0.1 -p 5900 |
| virsh # list --all Id Name State ---------------------------------------------------- 3 centos6-64-1 running virsh # qemu-monitor-command 3 --hmp 'info spice' Server: address: 127.0.0.1:5900 auth: none Channel: address: 127.0.0.1:50420 session: 1714636915 channel: 1:0 Channel: address: 127.0.0.1:50421 session: 1714636915 channel: 6:0 Channel: address: 127.0.0.1:50422 session: 1714636915 channel: 5:0 Channel: address: 127.0.0.1:50423 session: 1714636915 channel: 4:0 Channel: address: 127.0.0.1:50424 session: 1714636915 channel: 2:0 Channel: address: 127.0.0.1:50425 session: 1714636915 channel: 3:0 virsh # |
