Re: vnc trick?

On 10/27/06, Justin Conover <justin.conover@xxxxxxxxx> wrote:

On 10/27/06, Daniel P. Berrange < berrange@xxxxxxxxxx> wrote:

On Thu, Oct 26, 2006 at 08:25:04PM -0500, Justin Conover wrote:
> Is there something I'm missing with VNCserver/viewer?
>
> # xenguest-install
> Would you like a fully virtualized guest (yes or no)?  This will allow you
> to run unmodified operating systems. yes
> What is the name of your virtual machine? fc6-httpd01
> How much RAM should be allocated (in megabytes)? 512
> What would you like to use as the disk (path)? /home/xen/fc6-httpd01
> How large would you like the disk to be (in gigabytes)? 6
> Would you like to enable graphics support? (yes or no) yes
> What would you like to use for the virtual CD image? /home/xen/FC-6-x86_64-
> DVD.iso
>
>
> Starting install...
> libvir: Xen Daemon error : GET operation failed: No such domain fc6-httpd01
>
> VNC Viewer Free Edition 4.1.2 for X - built Oct 25 2006 09:08:37
> Copyright (C) 2002-2005 RealVNC Ltd.
> See http://www.realvnc.com for information on VNC.
>
> Thu Oct 26 20:21:19 2006
> main:        unable to connect to host: Connection refused (111)
> Domain installation still in progress.  You can reconnect
> to the console to complete the installation process.
> [root@kainos xen]# xm list
> Name                                      ID Mem(MiB) VCPUs State   Time(s)
> Domain-0                                   0     1477     2 r-----   1003.2
> fc6-httpd01                               12      512     1 r-----     34.2
> [root@kainos xen]# xm console fc6-httpd01
> xenconsole: Could not read tty from store: No such file or directory

Ok, a couple of things to check:

- Run  'virsh dumpxml fc6-httpd01'  and look to see if there is a
   <graphics type='vnc'> tag, and whether it has a port number in it
- Run 'ps -axuwwf | grep vnc' to see if there is a 'xen-vncfb'
   server daemon running in Dom0
- Run 'netstat -t -l -n -p' to see if this server daemon is listening
   on the port indicated by the XML dump in step 1. This will also tell
   you if its listening on 127.0.0.1, or all interfaces

If any of that is missing/wrong, then /var/log/xen/xend- debug.log is
where the VNC server stucks its logs.

Regards,
Dan.
--
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$ vncviewer localhost:5900

VNC Viewer Free Edition 4.1.2 for X - built Oct 25 2006 09:08:37
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.

Fri Oct 27 21:54:27 2006

 main:        unable to connect to host: Connection refused (111)

If I open the serial console this is the output:

IP route cache hash table entries: 32768 (order: 6, 262144 bytes)
TCP established hash table entries: 131072 (order: 10, 4194304 bytes)
TCP bind hash table entries: 65536 (order: 9, 2097152 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
IA-32 Microcode Update Driver: v1.14-xen <
tigran@xxxxxxxxxxx>
audit: initializing netlink socket (disabled)
audit(1162003336.006:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
SELinux:  Registering netfilter hooks
Initializing Cryptographic API
ksign: Installing public key data
Loading keyring
- Added public key 4D36EEF71C3A3150
- User ID: Red Hat, Inc. (Kernel Module GPG key)
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
rtc: IRQ 8 is not free.
Non-volatile memory driver v1.2
Linux agpgart interface v0.101
 (c) Dave Jones
RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize
Xen virtual console successfully installed as xvc0
Event-channel device installed.
Console: switching to colour frame buffer device 100x37
input: Xen Virtual Keyboard/Mouse as /class/input/input0
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
ide-floppy driver 
0.99.newide
usbcore: registered new driver libusual
usbcore: registered new driver hiddev
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
PNP: No PS/2 controller found. Probing ports directly.
i8042.c: No controller found.
mice: PS/2 mouse device common for all mice
md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: bitmap version 4.39
TCP bic registered
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
XENBUS: Device with no driver: device/vbd/51712
XENBUS: Device with no driver: device/vif/0
Write protecting the kernel read-only data: 440k