[ovirt-users] Bug: Spice port changed!!!!!

David Jaša djasa at redhat.com
Mon Sep 22 12:44:03 UTC 2014 

Paul,

Short answer: your approach will not work. I mentioned the custom hooks
and engine-config/UserDefinedVMProperties for a reason. Please follow my
advice first before asking further advice.


Longer answer: your changes to the libvirt domains would apply on next
domain cold start but that will never happen because vdsm always creates
libvirt domains as transient ones so the libvirt domain will disappear
on guest OS shutdown. On next start of the same oVirt VM, vdsm will
creates a new domain XML that will be used to start a new libvirt
transient domain.

In order to make this new libvirt domain use your desired parameters,
you have to edit the XML before it is used to start the libvirt domain
and because we humans are too slow to do that and too annoyed to do that
on every VM start, vdsm hooks mechanism was devised and a script in
before_vm_start can do that changes for you (with input variables
defined in engine-config and set in VM's custom properties).


So back to my original suggestion: do you still think that it is wise to
try method that is more complicated and less secure than the custom
launcher method?


Regards,

David

On Po, 2014-09-22 at 11:11 +0800, PaulCheung wrote:
> Dear David:
> 
> 
> I am trying figure it out using my way.   So I used "virsh edit vm",
> I change the port the 5980 & 5981,   but still not work!!!
> 
> 
>   
> 
>  
> 
> 
> 
> 
> I found after virsh edit,  there is a xml file here  /etc/libvirt/qemu
> which I edit using "virsh edit vm".
> 
> 
> And I also run this command :    "virsh define vm.xml"    
> 
> 
> also not work.    Can you tell me where is the file I can fixed the
> spice port.
> 
> 
> 
> 
> Sincerely yours,
> PaulCheung
> 
> 
>  tel: 180-8882-7173
> 
> 
> 
> > Subject: Re: [ovirt-users] Bug: Spice port changed!!!!!
> > From: djasa at redhat.com
> > To: eq2008 at msn.com
> > CC: users at ovirt.org
> > Date: Thu, 18 Sep 2014 15:27:50 +0200
> > 
> > Hi,
> > 
> > 2) is not a file, it's a key in engine-config
> > 3) is a VDSM custom hook that needs to be in all the hypervisors in
> DC/Cluster
> > 
> > Follow vdsm custom hook documentation (I don't have a link from top
> of my head but web or ML archives will surely help).
> > 
> > David
> > 
> > On Thu, 2014-09-18 at 14:51 +0800, PaulCheung wrote:
> > > Dear David,
> > > 
> > > 
> > > Thank you for your help . Your answer is very professional.
> > > 
> > > 
> > > I still can't not find a way to stick with static port assignments
> > > For I don't understand you telling me , 2&3, where I can find the
> > > file to modify?
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > > However, if you _really_ want to stick with static port
> assignments,
> > > do
> > > > the following:
> > > > 1) designate the port range so that it doesn't collide with
> other
> > > ranges
> > > > in use (e.g. RHEV uses 5900-6023, so 5800-5899 could be safe)
> > > > 2) add a custom VM properties to the engine for setting of port
> and
> > > > tls-port
> > > > 3) add a vdsm hook to before_vm_start directory on each host
> that
> > > will
> > > > add "port" and "tlsPort" parameters to the graphics element of
> > > libvirt
> > > > domain xml
> > > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > 
> > > Sincerely yours,
> > > PaulCheung
> > > 
> > > 
> > > tel: 180-8882-7173
> > > 
> > > 
> > > 
> > > > Subject: Re: [ovirt-users] Bug: Spice port changed!!!!!
> > > > From: djasa at redhat.com
> > > > To: eq2008 at msn.com
> > > > CC: users at ovirt.org
> > > > Date: Wed, 17 Sep 2014 10:40:42 +0200
> > > > 
> > > > Hi Paul,
> > > > 
> > > > This behaviour is by design. It is a bad idea to override it. A
> good
> > > > approach to your problem would be to write a launcher script
> that
> > > would:
> > > > 1) connect to the REST API
> > > > 2) get the VM connection details
> > > > 3) get new VM ticket
> > > > 4) write this info down to a temporary .vv file [3]
> > > > 5) launch remote-viewer
> > > > 
> > > > Some info how to use REST API is described here [1] and .vv file
> > > format
> > > > is documented in virt-viewer sources [2]. Please note that [1]
> is a
> > > bit
> > > > outdated:
> > > > * you can use HTTP header "filter: true" to be able to log in as
> > > non-admin
> > > > * you only have to use password login once when you use
> > > > "prefer: persistent-auth" HTTP header and you send the cookie
> you
> > > got
> > > > in a response to first request.
> > > > In the future, the steps 2-4 will become a one step of getting a
> > > > ready-to-use .vv file from the API [3] but we aren't there yet.
> > > > 
> > > > [1]
> > >
> http://www.ovirt.org/How_to_Connect_to_SPICE_Console_Without_Portal
> > > > [2]
> > >
> https://git.fedorahosted.org/cgit/virt-viewer.git/tree/src/virt-viewer-file.c#n30
> > > > [3] https://bugzilla.redhat.com/show_bug.cgi?id=1128763
> > > > 
> > > > 
> > > > However, if you _really_ want to stick with static port
> assignments,
> > > do
> > > > the following:
> > > > 1) designate the port range so that it doesn't collide with
> other
> > > ranges
> > > > in use (e.g. RHEV uses 5900-6023, so 5800-5899 could be safe)
> > > > 2) add a custom VM properties to the engine for setting of port
> and
> > > > tls-port
> > > > 3) add a vdsm hook to before_vm_start directory on each host
> that
> > > will
> > > > add "port" and "tlsPort" parameters to the graphics element of
> > > libvirt
> > > > domain xml
> > > > 
> > > > 
> > > > Best regards,
> > > > 
> > > > David
> > > > 
> > > > On St, 2014-09-17 at 10:41 +0800, PaulCheung wrote:
> > > > > Dear all,
> > > > > 
> > > > > 
> > > > > After shutdown the VM, then restart the VM the Vm's spice port
> is
> > > > > changed!
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > Because I have 10 terminal ARM-Box running spice client
> connected
> > > to
> > > > > the vm, but after the VM shutdown and start again, the vm not
> the
> > > one
> > > > > whice the one before.
> > > > > 
> > > > > 
> > > > > I wish you can let us have a option, to let the VM with a
> fixed
> > > spice
> > > > > port, like:
> > > > > vm1: spice port : 5900 tls:5901
> > > > > vm2: 5902 5903
> > > > > 
> > > > > 
> > > > > And I have another recommond: have a fuction to do that :
> > > > > 
> > > > > 
> > > > > if the vm shutdown by user, it will start the VM automatic.
> That
> > > > > means the VM can not be shutdown!
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > I hope you can have this two fuction! That means a lot to
> those
> > > who
> > > > > are using Terminal box user like me.
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > I am sorry for my poor English. But I hope you all can
> understand
> > > > > what I am saying.
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > 
> > > > > Sincerely yours,
> > > > > PaulCheung
> > > > > 
> > > > > 
> > > > > tel: 180-8882-7173
> > > > > 
> > > > > _______________________________________________
> > > > > Users mailing list
> > > > > Users at ovirt.org
> > > > > http://lists.ovirt.org/mailman/listinfo/users
> > > > 
> > > > 
> > > 
> > > _______________________________________________
> > > Users mailing list
> > > Users at ovirt.org
> > > http://lists.ovirt.org/mailman/listinfo/users
> > 
> > 
> 
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