instance console something went wrong, connection is closed | Wallaby DCN

Swogat Pradhan swogatpradhan22 at gmail.com
Fri Jun 23 03:07:50 UTC 2023


Hi Mel,
Thank you for your response.
I am facing issues with the instance console (vnc) in the openstack
dashboard, Most of the time I shelve the instance and unshelve the instance
to get the console.
But there are some VM's I created which are not working even after
shelve/unshelve.

I have used the same director to deploy a total of a central and 2 edge
sites.
This issue is happening on a single edge site.
Cold Migration also helps in some situations.

With regards,
Swogat Pradhan

On Fri, Jun 23, 2023 at 12:42 AM melanie witt <melwittt at gmail.com> wrote:

> On 06/22/23 01:08, Swogat Pradhan wrote:
> > Hi,
> > Please find the below log:
> > [root at dcn01-hci-1 libvirt]# cat virtqemud.log
> > 2023-06-22 07:40:01.575+0000: 350319: error : virNetSocketReadWire:1804
> > : End of file while reading data: Input/output error
> > 2023-06-22 07:40:01.575+0000: 350319: error : virNetSocketWriteWire:1844
> > : Cannot write data: Broken pipe
> >
> > I think this is causing the problem of not getting the instance console.
>
> When you say "instance console" are you referring to an interactive
> console like VNC or are you talking about the console log for the instance?
>
> If it's the interactive console, if you have a console open and then
> migrate the instance, that console will not be moved along with the
> instance. When a user requests a console, the console proxy service
> establishes a connection to the compute host where the instance is
> located. The proxy doesn't know when an instance has been moved though,
> so if the instance is moved, the user will need to request a new console
> (which will establish a new connection to the new compute host).
>
> Is that the behavior you are seeing?
>
> -melwitt
>
> > On Fri, Jun 2, 2023 at 11:27 AM Swogat Pradhan
> > <swogatpradhan22 at gmail.com <mailto:swogatpradhan22 at gmail.com>> wrote:
> >
> >     Update:
> >     If the i am performing any activity like migration or resize of an
> >     instance whose console is accessible, the console becomes
> >     inaccessible giving out the following error : something went wrong,
> >     connection is closed
> >
> >     The was 1 other instance whose console was not accessible and i did
> >     a shelve and unshelve and suddenly the instance console became
> >     accessible.
> >
> >     This is a peculiar behavior and i don't understand where is the
> issue .
> >
> >     With regards,
> >     Swogat Pradhan
> >
> >     On Fri, Jun 2, 2023 at 11:19 AM Swogat Pradhan
> >     <swogatpradhan22 at gmail.com <mailto:swogatpradhan22 at gmail.com>>
> wrote:
> >
> >         Hi,
> >         I am creating instances in my DCN site and i am unable to get
> >         the console sometimes, error: something went wrong, connection
> >         is closed
> >
> >         I have 3 instances now running on my hci02 node and there is
> >         console access on 1 of the vm's and the rest two i am not
> >         getting the console, i have used the same flavor, same image
> >         same security group for the VM's.
> >
> >         Please suggest what can be done.
> >
> >         With regards,
> >         Swogat Pradhan
> >
>
>
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