[ovirt-devel] oVirt messages from engine to vdsm

[Anastasiya Ruzhanskaya]

rpm -qa |grep postgres
rh-postgresql95-postgresql-libs-9.5.9-1.el7.x86_64
postgresql-libs-9.2.23-3.el7_4.x86_64
rh-postgresql95-runtime-2.2-2.el7.x86_64
rh-postgresql95-postgresql-9.5.9-1.el7.x86_64
postgresql-jdbc-9.2.1002-5.el7.noarch
postgresql-contrib-9.2.23-3.el7_4.x86_64
rh-postgresql95-postgresql-server-9.5.9-1.el7.x86_64
postgresql-9.2.23-3.el7_4.x86_64
rh-postgresql95-postgresql-contrib-9.5.9-1.el7.x86_64
collectd-postgresql-5.8.0-2.el7.x86_64
postgresql-server-9.2.23-3.el7_4.x86_64
[skotti at localhost ~]$ psql -U postgres
psql: FATAL:  Peer authentication failed for user "postgres"

But I actually installed it manually, still no succeed. But ovirt engine is
working.

2018-05-07 5:22 GMT-04:00 Eli Mesika <emesika at redhat.com>:

>
>
> On Mon, May 7, 2018 at 11:40 AM, Anastasiya Ruzhanskaya <
> anastasiya.ruzhanskaya at frtk.ru> wrote:
>
>> If the engine user is not accessible directly, why then in this command
>> you use it?:
>>
>>  psql -U engine engine -c "UPDATE vdc_options set option_value = 'false'
>>                                                  WHERE option_name = 'SSLEnabled';"
>>
>> I am not really good in managing databases, I also didn't have postgresql
>> installed after finishing oVirt engine installation and even managing to
>> deploy everything. Does it mean that no database was created at all? I have
>> chosen automatic and local creation in all fields related to database while
>> installing oVirt engine.
>>
>
> ​Can you paste the output of the following command
>
> rpm -qa |grep postgres ​
>
>
>
>
>>
>>
>> 2018-05-07 11:00 GMT+03:00 Martin Sivak <msivak at redhat.com>:
>>
>>> Hi,
>>>
>>> I think what you are looking for is mostly this:
>>> https://github.com/oVirt/vdsm/blob/master/lib/vdsm/api/vdsm-api.yml
>>>
>>> The best way to see what the traffic is is to disable SSL. The
>>> postgres database is installed and accessible using the postgres user
>>> (the engine user is not allowed to access it directly).
>>>
>>> You might also be interested in the vdsm fake project we use as node
>>> simulator. Its readme will tell you exactly how to do this:
>>> https://github.com/oVirt/ovirt-vdsmfake
>>>
>>> I wrote an article some time ago that explained how to setup a
>>> development environment without real hosts:
>>> https://www.ovirt.org/blog/2016/11/testing-ovirt-changes-wit
>>> hout-cluster/
>>>
>>> Might I ask what you goal is?
>>>
>>> Best regards
>>>
>>> --
>>> Martin Sivak
>>> SLA / oVirt
>>>
>>> On Sun, May 6, 2018 at 6:26 AM, 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/connectin
>>> g-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?
>>> >
>>> >
>>> > _______________________________________________
>>> > Devel mailing list
>>> > Devel at ovirt.org
>>> > http://lists.ovirt.org/mailman/listinfo/devel
>>>
>>
>>
>> _______________________________________________
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>> http://lists.ovirt.org/mailman/listinfo/devel
>>
>
>
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