[libvirt-users] [ovirt-users] virsh athentification failure

[Michal Skrivanek]

> On 04 Dec 2015, at 16:26, Daniel P. Berrange <berrange at redhat.com> wrote:
> 
> On Fri, Dec 04, 2015 at 03:18:19PM +0000, Jean-Pierre Ribeauville wrote:
>> Hi,
>> 
>> I wrote a C program running in a KVM host.
>> Part of it adds a Unix Channel device in all Guests in order to  have a dialog from Host to Guest.

are you adding it later, when the VM is running? Is it a requirement to do it this way?
You can use oVirt vdsm hook[1] to inject custom snippet to libvirt’s xml on VM startup and add any channel you want. 
It would also allow you to pass arbitrary parameters from oVirt UI, should you ever need them.

Thanks,
michal

[1] http://www.ovirt.org/VDSM-Hooks

>> As long as my host wasn't part of an Ovirt cluster , all was running fine.
>> 
>> 
>> I added my host in a ovirt cluster , and then , when running the script creating the channel device  ( by  using  "virsh attach-device  --persistent -live ....." ) , I got following error :
>> 
>> Please enter your authentication name:
>> Please enter your password:
>> error: failed to connect to the hypervisor
>> error: no valid connection
>> error: authentication failed: Failed to step SASL negotiation: -1 (SASL(-1): generic failure: All-whitespace username.)
>> 
>> 
>> What's the user/password I've to use then ?
> 
> When you attach a compute node to oVirt, it sets up auth with libvirt
> to prevent admins from connecting to libvirt. If you want to oiverride
> that you need to create yourself a SASL user + password using the
> saslpasswd2 command eg see
> 
> http://libvirt.org/auth.html#ACL_server_username
> 
> Regards,
> Daniel
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