kvm-83. That said, as you've probably already read in the docs, KVM is
a technology preview in RHEL 5.x...6.0 will be the first version
with official/stable KVM support by Red Hat.
My understanding is that KVM was tech preview in RHEL/CentOS 5.4 and
officially supported from RHEL/CentOS 5.5.
If you manually install virtualbox, you can unload the kvm module
manually and load the virtual box modules. You can't have both loaded
at the same time (at least not that I know of), but you can unload
one and load the other.
Concretely, before running VirtualBox, run:
sudo /sbin/modprobe -r
Hello,
I'm trying to set up IP aliases within a QEMU/KVM guest on CentOS 5.5
x86_64, going through a bridged virtualized interface.
The virtualized interface in the guest is configured as follow:
# ifcfg-eth1
DEVICE=eth1
BOOTPROTO=none
PEERDNS=yes
GATEWAY=IP.OF.HOST.GATEWAY
On first reading I thought eth1 would have been your second interface
within the guest, besides eth0. Meanwhile I think you just skipped eth0.
There is a eth0 interface, but it is connected to the internal NAT
network of libvirt.
That way I have a LAN between my guests and eth1 is used for
NETMASK=255.255.255.255?
it surprised me as well first, but that is what OVH recommends and it
works fine with virtual interfaces
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Hi,
I have a virtualized infrastructure based on KVM/QEMU with CentOS 5.5
x86_64 hosts and guests, using bridge networking.
I want to set up IP based VirtualHosts in Apache (because they will
use SSL) and I have ordered an IP block.
Now, in order to have the IPs available on some guests, I'm
You don't have to restart the guest to add or remove aliases:
yes I am aware of that, and that's why I'm wondering whether it is
better to use aliases rather than to add virtual interfaces (which
does require to restart guests with our KVM version, no hot-plug I
think).
But is there any
yes, you can add / remove disks to a VM without restarting the guest.
look at the xm block-attach / block-detach commands
My understanding is that xm is Xen specific (I'm using Qemu/KVM)
I tried with virsh:
virsh # attach-disk 6 /dev/mapper/vg_alma_fast-lv_test_virtlvm2 vdb
Disk attached
You also need to tell the guest that a new device exists... Unless it
(the guest) has some hotswap abilities
Do you know how I can do that?
I reinstalled the guest (CentOS 5.4 x86_64, just as the host) with the
default non-desktop groups, but it still doesn't see when I attach a
disk.
I
something along
echo - - - /sys/class/scsi_host/hostX/scan // yes, the -
must be there !
Unfortunately there is nothing under scsi:
[r...@localhost ~]# ll /sys/class/scsi_*
/sys/class/scsi_device:
total 0
/sys/class/scsi_disk:
total 0
/sys/class/scsi_host:
total 0
I also tried
SELinux is preventing qemu-kvm (qemu_t) execute to /dev/zero
(zero_device_t).
(full alert below)
I thought that maybe the latest selinux-policy update would fix this,
but after updating and 'sudo /sbin/restorecon -v /dev/zero' again, I
still have the same SELinux denial.
I browsed the CentOS
Hi,
on an up to date CentOS 5.4 x86_64 (test machine), I systematically
get the following SELinux denial when I start a QEMU/KVM virtual
machine via virt-manager:
SELinux is preventing qemu-kvm (qemu_t) execute to /dev/zero (zero_device_t).
(full alert below)
Running the command suggested by
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