[one-users] Not able to access running Ubuntu vm

Amit Soni get.amitsoni at gmail.com
Wed Apr 20 07:13:36 PDT 2011 

Hello,

I was finally able to run my ubuntu image using one.

Thanks to Jaime, I was installing the ubuntu-10.10-64bit-server iso
through opennebula by modifying the template file. I got the error
that the kernel is 64 bit but the architecture is i686. As mentioned
in the documentation
http://opennebula.org/documentation:rel2.2:template we have to
explicitly specify the architecture by adding OS = [ ARCH = x86_64 ]
if the kernel we are trying to boot is not 32 bits which I was not
doing for my previous images also.

That's when I stopped the installation without completing and tried OS
= [ ARCH = x86_64 ]  for my previously made images. Now they work like
a charm.

So, it's not necessary to install the ubuntu image using opennebula
(although it is easy to install that way). We can run pre-installed
(installed using qemu command) in opennebula, we just need the right
template file. In my case the final template file that I used was:

NAME   = ubuntu
CPU    = 1
MEMORY = 400

DISK   = [
  source   = "/path/to/ubuntu-1010-server-64bits.img",
  target   = "sda",
  readonly = "no",
  DRIVER=qcow2
]

OS = [ ARCH = x86_64]

NIC    = [ NETWORK = "VM_LAN" ]

FEATURES=[ acpi="no" ]

GRAPHICS = [type="vnc", listen="0.0.0.0", port="5949"]


BR,
Amit


On Tue, Apr 19, 2011 at 12:51 PM, Jaime Melis <j.melis at gmail.com> wrote:
> Hi Amit,
> take a look at this [1] post, it might help you out with running Ubuntu
> 10.10. Although I have described the process for Ubuntu 10.04 it should work
> with Ubuntu 10.10.
> [1] http://lists.opennebula.org/pipermail/users-opennebula.org/2011-April/004893.html
> Cheers,
> Jaime
>
> On Fri, Apr 15, 2011 at 12:52 PM, Amit Soni <get.amitsoni at gmail.com> wrote:
>>
>> Hello,
>>
>> I made this img file using the following commands:
>>
>> qemu-img create -f qcow2 vdisk.img 10G
>> qemu-system-x86_64 -hda vdisk.img -cdrom /path/to/ubuntu-server.iso
>> -boot d  -m 384
>> mv vdisk.img ubuntu-1010-server-network-init.img
>>
>> So, I am pretty sure it's qcow2 format.
>>
>> Also, I tried to convert the img file to the raw format using the
>> following command but still I got the same blank screen:
>>
>> qemu-img convert -O raw ubuntu-1010-server-network-init.img
>> ubuntu-1010-server-network-init.raw
>>
>> So I am still not able to run ubuntu VM in opennebula. I would be
>> great if there are some sort of standard contextualized images of
>> standard linux distros available for usage.
>>
>> Amit
>>
>> On Fri, Apr 15, 2011 at 1:26 PM, Olivier Sallou <olivier.sallou at irisa.fr>
>> wrote:
>> > your source file is
>> >
>> > ubuntu-1010-server-network-init.img
>> >
>> > with img extension are you sure it is a qcow2?
>> >
>> > Olivier
>> > Le 4/15/11 12:13 PM, Amit Soni a écrit :
>> >> Hello,
>> >>
>> >> There is some interesting progress. I was able to connect to the vnc
>> >> session of the machine. I found the following output:
>> >>
>> >> Booting from Hard Disk ...
>> >> Boot failed: not a bootable disk
>> >>
>> >> No bootable device.
>> >>
>> >> Apparently, the format of the IMG file is qcow2 and I didn't mentioned
>> >> that format in the VM template. Hence, I did the following changes in
>> >> the VM template as mentioned in the link
>> >> https://support.opennebula.pro/entries/348847-using-qcow-images:
>> >>
>> >> DISK   = [
>> >>   source   =
>> >> "/srv/cloud/images/ubuntu/ubuntu-1010-server-network-init.img",
>> >>   target   = "hda",
>> >>   readonly = "no",
>> >>   DRIVER=qcow2
>> >> ]
>> >>
>> >> However, now when I access the VM from the vnc session I see blank
>> >> screen (not a single character on the screen). The VM is still in the
>> >> "runn" state.
>> >> Now I am really confused what could have went wrong.
>> >>
>> >> --Amit
>> >>
>> >>
>> >> 2011/4/14 Amit Soni <get.amitsoni at gmail.com>:
>> >>> Hello,
>> >>>
>> >>> I was trying the same thing using following parameters in the template
>> >>> file:
>> >>>
>> >>> RAW = [ type = "kvm",
>> >>>              data = "<devices><serial type=\"pty\"><source
>> >>> path=\"/dev/pts/5\"/><target port=\"0\"/></serial><console
>> >>> type=\"pty\"
>> >>> tty=\"/dev/pts/5\"><source path=\"/dev/pts/5\"/><target
>> >>> port=\"0\"/></console></devices>" ]
>> >>>
>> >>> However, when I accessed the machine using the virsh console I got the
>> >>> following output after which it just froze. I hit "enter" many time
>> >>> but no response. Although I was able to get out of the console:
>> >>>
>> >>> virsh # console one-13
>> >>> Connected to domain one-13
>> >>> Escape character is ^]
>> >>>
>> >>> I read somewhere that this can be because I have not enabled the VM to
>> >>> be accessed from serial console so then I followed the following guide
>> >>> to make some modification in the VM:
>> >>>
>> >>> https://help.ubuntu.com/community/SerialConsoleHowto
>> >>>
>> >>> However, after making the changes when I boot the VM using the "qemu"
>> >>> command I just  see the some output like follows:
>> >>>
>> >>> fsck from util-linux-ng 2.17.2
>> >>> /dev/sda1: clean ... files, ... blocks
>> >>>  * Starting AppArmor profiles
>> >>>
>> >>> And that's it. After this there is no response from the VM. However, I
>> >>> am able to ssh into the VM (since I have started it from qemu
>> >>> command).
>> >>>
>> >>> But the important thing is, even after these changes for enabling
>> >>> serial console in the VM and starting the VM from the opennebula with
>> >>> the above mentioned RAW parameters, I get the same result. It get the
>> >>> same output upon accessing the console and after that it just freezes.
>> >>>
>> >>> Could see any mistake that I might be making.
>> >>>
>> >>> Thanks & Regards,
>> >>> Amit
>> >>>
>> >>>
>> >>> 2011/4/14 Idafen Santana Pérez <idafensp at gmail.com>:
>> >>>> Hi Zeeshan,
>> >>>>
>> >>>> how do you access a running VM?
>> >>>>
>> >>>> Regards
>> >>>> Idafen
>> >>>>
>> >>>> On Thu, Apr 14, 2011 at 6:13 PM, Zeeshan Ali Shah <zashah at pdc.kth.se>
>> >>>> wrote:
>> >>>>> Manually Console to the running VM to see what went wrong ..
>> >>>>>
>> >>>>> /Zeeshan
>> >>>>>
>> >>>>> On Thu, Apr 14, 2011 at 5:40 PM, Amit Soni <get.amitsoni at gmail.com>
>> >>>>> wrote:
>> >>>>>> Hello,
>> >>>>>>
>> >>>>>> I manually created a Ubuntu IMG by installing the Ubuntu 10.10
>> >>>>>> server
>> >>>>>> ISO using qemu command as follows:
>> >>>>>>
>> >>>>>> qemu-img create -f qcow2 vdisk.img 10G
>> >>>>>> qemu-system-x86_64 -hda vdisk.img -cdrom /path/to/ubuntu-server.iso
>> >>>>>> -boot d  -m 384
>> >>>>>>
>> >>>>>> Then I added the network contextualisation scripts as mentioned in
>> >>>>>> the
>> >>>>>> first section of the article:
>> >>>>>> http://opennebula.org/documentation:archives:rel2.0:cong
>> >>>>>> But I did one change; I added the execution of the "vmcontext"
>> >>>>>> script
>> >>>>>> in the "/etc/init.d/networking" script since adding the "vmcontext"
>> >>>>>> script in the runlevel 2 didn't helped.
>> >>>>>>
>> >>>>>> Now when I start the installed Ubuntu IMG using the following
>> >>>>>> command,
>> >>>>>> I get the desired IP in the machine. I am also able to SSH to the
>> >>>>>> machine:
>> >>>>>>
>> >>>>>> qemu-system-x86_64 -hda ubuntu-server.img  -net
>> >>>>>> nic,macaddr=02:00:c0:a8:02:08 -net tap
>> >>>>>>
>> >>>>>> However, when I use this IMG in the opennebula template file the
>> >>>>>> machine goes in the "runn" state but I am not able to access the
>> >>>>>> machine. My template file is as follows:
>> >>>>>>
>> >>>>>> NAME   = ubuntu
>> >>>>>> CPU    = 1
>> >>>>>> MEMORY = 400
>> >>>>>>
>> >>>>>> DISK   = [
>> >>>>>>  source   = "/srv/cloud/images/ubuntu/ubuntu-server.img",
>> >>>>>>  target   = "hda",
>> >>>>>>  readonly = "no" ]
>> >>>>>>
>> >>>>>> NIC    = [ NETWORK = "VM_LAN" ]
>> >>>>>>
>> >>>>>> FEATURES=[ acpi="no" ]
>> >>>>>>
>> >>>>>> Moreover, when I start the standard ttylinux IMG in am easily able
>> >>>>>> to
>> >>>>>> SSH to the machine.
>> >>>>>> Can anyone guide me to some standard documentation of how to create
>> >>>>>> a
>> >>>>>> IMG for opennebula starting from an ISO.
>> >>>>>>
>> >>>>>> Thanks & Regards,
>> >>>>>> Amit Soni
>> >>>>>> _______________________________________________
>> >>>>>> Users mailing list
>> >>>>>> Users at lists.opennebula.org
>> >>>>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>> >>>>>
>> >>>>>
>> >>>>> --
>> >>>>>
>> >>>>> --
>> >>>>> Regards
>> >>>>>
>> >>>>> Zeeshan Ali Shah
>> >>>>> System Administrator
>> >>>>> PDC-Center for High Performance Computing
>> >>>>> KTH-Royal Institute of Technology , Sweden
>> >>>>>
>> >>>>> +46 8 790 9115
>> >>>>>
>> >>>>> _______________________________________________
>> >>>>> Users mailing list
>> >>>>> Users at lists.opennebula.org
>> >>>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>> >>>>>
>> >>>>>
>> >>>
>> >>>
>> >>> --
>> >>> Amit Soni
>> >>> Email-id: get.amitsoni at gmail.com, get.amitsoni at hotmail.com
>> >>>
>> >>
>> >>
>> >
>> > --
>> > gpg key id: 4096R/326D8438  (pgp.mit.edu)
>> > Key fingerprint = 5FB4 6F83 D3B9 5204 6335  D26D 78DC 68DB 326D 8438
>> >
>> >
>> > _______________________________________________
>> > Users mailing list
>> > Users at lists.opennebula.org
>> > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>> >
>>
>>
>>
>> --
>> Amit Soni
>> Email-id: get.amitsoni at gmail.com, get.amitsoni at hotmail.com
>> _______________________________________________
>> Users mailing list
>> Users at lists.opennebula.org
>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>
>



-- 
Amit Soni
Email-id: get.amitsoni at gmail.com, get.amitsoni at hotmail.com

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