[ovirt-users] oVirt messages from engine to vdsm

[Yaniv Kaul]

I feel it's a question more suitable for the devel list.
In any way, perhaps setting the Engine in debug mode would suffice?
Y.

On Sat, May 5, 2018 at 1:07 PM, Anastasiya Ruzhanskaya <
anastasiya.ruzhanskaya at frtk.ru> wrote:

> Hello everyone!
> Currently I want to determine what information is included in messages
> passing from oVirt engine to VDSM on ovirt-node.
>
> I made up a really simple configuration with one VM representing engine,
> another - node, a managed to successfully  launch a single VM on this node.
> However, I have chosen to configure everything automatically. Currently
> traffic is encrypted with default certificates.
> So, there are three options for me and no one of them really works.
>
> 1) Find the format of messages ( what the fields are, session id for
> example) in docs, but I didn't  manage to find it;
> 2) Use wireshark to decrypt the traffic and the apply maybe a json
> -dissector to the decrypted data. I have tried many solutions ( thanks god
> I have rsa private and public keys but there is another session key which
> is generated every time engine starts to communicate with vdsm, which I
> cannot get with the help of sslkeylog file or ld_preload technology.
> Maybe someone knows the exact methodology how to do this correctly?
>
> 3) Turn off ssl in oVirt. It is simple to do that for vdsm, but for
> engine, according to answers on oVirt site, I should do 2 requests to the
> database. I was really surprised that psql was not installed by oVirt on my
> system. How did it then created a default database? ( I have chosen to
> create all locally and with default configurations).
> I mean these two commands : https://www.ovirt.org/develop/
> developer-guide/vdsm/connecting-development-vdsm-to-engine/ . I have a
> following error there :
> psql: FATAL: Peer authentication failed for user "engine"
>
> Could you please guide my what method is the best and how should I correct
> my faults there?
>
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