[one-users] Cannot access Sunstone after upload image 500Gb
Daniel Molina
dmolina at opennebula.org
Wed Oct 2 02:08:33 PDT 2013
In this case you can improve the overall performance deploying Sunstone and
oned in different physical machines, you can even deploy more than one
sunstone server. You may find useful the following guide:
http://opennebula.org/documentation:rel4.2:suns_advance
Note that sunstone use the tmp_dir variable in sunstone-server.conf to
store the files uploaded through sunstone, so if you are deploying sunstone
in a different machine you will have to export this directory to be
available in the machine where oned is running.
# /etc/one/sunstone-server.conf
# Directory to store temp files when uploading images
#
:tmpdir: /var/tmp
You should also consider using a different datastore such as Ceph where you
can distribute the I/O load among different hosts. Currently in OpenNebula
4.2 you can only specify one Ceph host, but in 4.4 we will include a
BRIDGE_LIST to specify more than one host.
http://opennebula.org/documentation:rel4.4:ceph_ds
Cheers
On 9 September 2013 07:42, Mohammad Fazli Ahmat Jalaluddin <
fazli.jalaluddin at gmail.com> wrote:
> It seems that when I upload a new image, or cloning that involves heavy
> disk activity (I/O) which causing the lag and lock-ups.
> I googled and found out that Ubuntu default I/O scheduling is using CFQ.
>
> May I know how OpenNebula admin manage the resources?
> I mean do admin let the user create the image and uploads it using
> Sunstone?
>
> If so, does other user encounter any lags if other user uploads a big
> image?
>
> How is it actually, the real case scenario for cloud service provider to
> provide an efficient service?
>
> I really appreciate for any suggestions
>
> Thank you
>
>
> On Thu, Sep 5, 2013 at 4:34 PM, Mohammad Fazli Ahmat Jalaluddin <
> fazli.jalaluddin at gmail.com> wrote:
>
>> Yes, I still experiencing the issue.
>> I really think that the problem is my network since I am using NFS for
>> the data transfer.
>>
>> If I deploy a Persistent image, the deployment time would be fast.
>> Most of my image is using persistent and it has no problem at all
>>
>> If I deploy a non-persistant image, the deployment time would be slow.
>> This holds true as non-persistent image would be copy to hypervisor and
>> this is my problem.
>> For a non-persistent image of 8Gb, it would take about 1/2 hour to deploy
>> (from prolog to running)
>> While deploying, the sunstone server seems slow other people who want to
>> login also takes much longer time
>>
>>
>> On Mon, Sep 2, 2013 at 9:46 PM, Daniel Molina <dmolina at opennebula.org>wrote:
>>
>>> Hi,
>>>
>>>
>>> On 15 August 2013 06:25, Mohammad Fazli Ahmat Jalaluddin <
>>> fazli.jalaluddin at gmail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> Sorry for late reply since it is holiday season in my country.
>>>>
>>>> I think the issue maybe due to NFS configuration (using NFSv3) and also
>>>> some other minor things such as upgrading ruby version and so on.
>>>>
>>>> I happened to see you post this suggested solutions while you were
>>>> helping another user:
>>>>
>>>> This error appears when the browser cannot contact the sunstone-server
>>>> or the request takes more than expected and the timeout is reached. To
>>>> improve the response time:
>>>> * [sunstone-oned] Is the connection between sunstone-server and
>>>> oned fast?
>>>> * [sunstone] Check if the nokogiri gem is installed in the
>>>> physical machine where sunstone-server is running, if it's not
>>>> installed rexml will be used by default (a bit slower)
>>>> * [sunstone] Using ruby 1.9 instead of 1.8
>>>> * [sunstone] By default sunstone-server runs using the thin
>>>> server, in a production environment it's recommended to use passenger +
>>>> apache/nginx instead. [1]
>>>> * [oned] Use mysql instead of sqlite as oned backend. [2]
>>>>
>>>>
>>>> Currently my deployment is installed with nokogiri gem, using mysql as
>>>> backend, using ruby 1.8, and running on thin server.
>>>>
>>>> I will try your suggested solution.
>>>>
>>>> Also, how to know is the connection between sunstone-server and oned
>>>> fast? Since in my deployment, both reside in the same server.
>>>>
>>>
>>> If both services are in the same machine, it should be fast. Are you
>>> still experiencing this issue?
>>>
>>> Cheers
>>>
>>>
>>>> Thank you.
>>>>
>>>> Regards
>>>>
>>>>
>>>> On Mon, Aug 5, 2013 at 2:36 PM, Daniel Molina <dmolina at opennebula.org>wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>>
>>>>> On 1 August 2013 02:11, Mohammad Fazli Ahmat Jalaluddin <
>>>>> fazli.jalaluddin at gmail.com> wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> Thanks for the reply.
>>>>>>
>>>>>> I have enough space on disk.
>>>>>> It's just the server seems not responding when I upload any image
>>>>>> files or deploy non-persistent image files.
>>>>>>
>>>>>> When I was using 3.8.3, the error comes something like this: "error:
>>>>>> execution expired"
>>>>>>
>>>>>
>>>>> Are you still experiencing this issue? If so, could you please open a
>>>>> ticket in our dev page so we can take a look into it
>>>>>
>>>>> http://dev.opennebula.org/
>>>>>
>>>>> Cheers
>>>>>
>>>>>
>>>>>>
>>>>>> Thank you
>>>>>>
>>>>>> Regards,
>>>>>> Fazli
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Mon, Jul 29, 2013 at 5:46 PM, Daniel Molina <
>>>>>> dmolina at opennebula.org> wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>>
>>>>>>> On 29 July 2013 08:17, Mohammad Fazli Ahmat Jalaluddin <
>>>>>>> fazli.mmu at gmail.com> wrote:
>>>>>>>
>>>>>>>> Hello all,
>>>>>>>>
>>>>>>>> I'm using OpenNebula 4.0.1, and I configured the filesystem using
>>>>>>>> NFS.
>>>>>>>>
>>>>>>>> After I try to upload a 500Gb image file, after some time, several
>>>>>>>> error message comes out and after that, the browser logs out
>>>>>>>> and when I'm want to login back, I got this error message
>>>>>>>>
>>>>>>>> "No answer from server. Is it running?"
>>>>>>>>
>>>>>>>> Is it natural?
>>>>>>>>
>>>>>>>> The problem is actually, when a user want to access their VM via
>>>>>>>> sunstone, they cannot access if other user try to upload a huge size of
>>>>>>>> image.
>>>>>>>> So, somehow it defeats the purpose of having Cloud.
>>>>>>>>
>>>>>>>> Is there any method to overcome this problem?
>>>>>>>>
>>>>>>>
>>>>>>> Do you have enough space in your disk? When uploading images through
>>>>>>> Sunstone temp files will be stored in /var/tmp and then moved to the given
>>>>>>> datastore.
>>>>>>>
>>>>>>> You can change this directory in the sunstone-server.conf:
>>>>>>> # Directory to store temp files when uploading images
>>>>>>> #
>>>>>>> :tmpdir: /var/tmp
>>>>>>>
>>>>>>> Hope this helps
>>>>>>>
>>>>>>>
>>>>>>>>
>>>>>>>> Thank you very much for helping me.
>>>>>>>>
>>>>>>>> Regards,
>>>>>>>> Fazli
>>>>>>>> _______________________________________________
>>>>>>>> Users mailing list
>>>>>>>> Users at lists.opennebula.org
>>>>>>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Join us at OpenNebulaConf2013 <http://opennebulaconf.com/> in
>>>>>>> Berlin, 24-26 September, 2013
>>>>>>> --
>>>>>>> Daniel Molina
>>>>>>> Project Engineer
>>>>>>> OpenNebula - The Open Source Solution for Data Center Virtualization
>>>>>>> www.OpenNebula.org | dmolina at opennebula.org | @OpenNebula
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Join us at OpenNebulaConf2013 <http://opennebulaconf.com/> in Berlin,
>>>>> 24-26 September, 2013
>>>>> --
>>>>> Daniel Molina
>>>>> Project Engineer
>>>>> OpenNebula - The Open Source Solution for Data Center Virtualization
>>>>> www.OpenNebula.org | dmolina at opennebula.org | @OpenNebula
>>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> Join us at OpenNebulaConf2013 <http://opennebulaconf.com/> in Berlin,
>>> 24-26 September, 2013
>>> --
>>> Daniel Molina
>>> Project Engineer
>>> OpenNebula - The Open Source Solution for Data Center Virtualization
>>> www.OpenNebula.org | dmolina at opennebula.org | @OpenNebula
>>>
>>
>>
>
--
--
Daniel Molina
Project Engineer
OpenNebula - Flexible Enterprise Cloud Made Simple
www.OpenNebula.org | dmolina at opennebula.org | @OpenNebula
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