Xen users - Jul 2010 - Xm console unable centos 5.5 Full virt

Hi all.

I am comming back to the virtualization...

Days ago I installed Centos 5.5  and I want to tray xen Full
virtualization.. so I create and installed my Full virtual machine. I use
virt-manager... the VM run pretty well...

But... If I connect remotly using ssh to domain0 and then use "xm console
ID" I get nothing.... and I have to ctrl + ].... (this happen too if I am
locally in the host machine)
I dont use ssh directly to guest because it use dhcp..so in any moment the
IP can change and maybe I can not login...

Or is there any way to know the address  of any guest(with dhcp) without
access to console ?

Above is the Vm conf file and guest grub.conf....



I search in common problems, edit the grub.conf on the guest with
console=tty , but I can not access to the console....I have 2 days reading
and searching but nothing work.. and I am no really sure if the console is
available using FULL virtualization...


title CentOS (2.6.18-194.3.1.el5)
        root (hd0,0)
        kernel /vmlinuz-2.6.18-194.3.1.el5 ro root=/dev/VolGroup00/LogVol00
        console=tty0 console=ttys0
        initrd /initrd-2.6.18-194.3.1.el5.img



My VM conf file is:

===========================================
name = "now"
uuid = "a6f8a3fb-6386-c1c5-9dd2-f33f9298b86b"
maxmem = 1024
memory = 507
vcpus = 1
builder = "hvm"
kernel = "/usr/lib/xen/boot/hvmloader"
boot = "c"
pae = 1
acpi = 1
apic = 1
localtime = 0
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
device_model = "/usr/lib/xen/bin/qemu-dm"
sdl = 0
vnc = 1
vncunused = 1
keymap = "en-us"
disk = [ "file:/var/lib/xen/images/now.img,hda,w",
",hdc:cdrom,r" ]
vif = [ "mac=00:16:36:45:0b:92,bridge=xenbr0,script=vif-bridge" ]
parallel = "none"
serial = "pty"
>
> ==========================================




-- 
--Michael Mendoza--


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On Tue, Jul 13, 2010 at 5:06 AM, Michael Mendoza <michaelux@gmail.com>
wrote:
> Hi all.
> I am comming back to the virtualization...
> Days ago I installed Centos 5.5  and I want to tray xen Full
> virtualization.. so I create and installed my Full virtual machine. I use
> virt-manager... the VM run pretty well...
> But... If I connect remotly using ssh to domain0 and then use "xm
console
> ID" I get nothing.... and I have to ctrl + ].... (this happen too if I
am
> locally in the host machine)
Short answer: since you use full virtualization, the domU (guest) was
not setup by default to use the serial console.
> I dont use ssh directly to guest because it use dhcp..so in any moment the
> IP can change and maybe I can not login...
> Or is there any way to know the address  of any guest(with dhcp) without
> access to console ?
There are some ways (not Xen-specific), using dynamic dns being the easiest one.
> Above is the Vm conf file and guest grub.conf....
>
>
> I search in common problems, edit the grub.conf on the guest with
> console=tty , but I can not access to the console....I have 2 days reading
> and searching but nothing work.. and I am no really sure if the console is
> available using FULL virtualization...
you need to edit /etc/inittab and /etc/securetty to use ttyS0 as well
> title CentOS (2.6.18-194.3.1.el5)
>         root (hd0,0)
>         kernel /vmlinuz-2.6.18-194.3.1.el5 ro root=/dev/VolGroup00/LogVol00
>         console=tty0 console=ttys0
it should be ttyS0, not ttys0

-- 
Fajar

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