Re: [ovirt-users] How does VDSM-Fake actually work?

Wednesday, 17 February 2016

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Hi Roman,

El 16/02/16 a las 10:27, Roman Mohr escribió:
...
 On Fri, Feb 12, 2016 at 12:45 PM, Michal Skrivanek 
 <michal.skrivanek(a)redhat.com <mailto:michal.skrivanek@redhat.com>> wrote:

>     On 09 Feb 2016, at 12:15, Nicolás <nicolas(a)devels.es
>     <mailto:nicolas@devels.es>> wrote:
>
>     Is there a way to get an account on mojo.redhat.com
>     <http://mojo.redhat.com> or is it internal? I'm trying to open
>     the document but credentials are required and I see no option to
>     create an account.

     yes it is

     Eldad, would you please move it to ovirt.org <http://ovirt.org>
     instead?

 I recently played with fakevdsm myself. The result was the patch 
 series in [1]. At least an updated README for the result of my patches 
 can be found in [2].

     Thanks,
     michal

>
>     El 04/02/16 a las 13:49, emarcian escribió:
>>     Hi,
>>     Seems like you need to change this settings update vdc_options
>>     set option_value='false' where option_name='InstallVds';
>>     follow the instructions here:
>>     https://mojo.redhat.com/docs/DOC-990399
>>
>>     in case you using 3.6 there is a new war (if you run the
>>     simulator as standalone).
>>
>>     -Eldad
>>
>>
>>     On 02/04/2016 03:04 PM, Piotr Kliczewski wrote:
>>>     Eldad is working on making it working with engine 3.6. He should be able
to
>>>     give you information you need.
>>>
>>>     On Wed, Feb 3, 2016 at 12:33 PM,&lt;nicolas(a)devels.es&gt;
<mailto:nicolas@devels.es>  wrote:
>>>>     Anything?
>>>>
>>>>     El 2016-02-02 10:18, Nicolás escribió:
>>>>>     Hi,
>>>>>
>>>>>       I'm trying to set up VDSM-Fake
>>>>>     (git://gerrit.ovirt.org/ovirt-vdsmfake.git) for some tests,
however,
>>>>>     I'm a bit confused about how does it actually work. As the
>>>>>     instructions say, I was able to build the project with Maven
(however,
>>>>>     the org.ovirt.vdsm-jsonrpc-java dependency version had to be
changed
>>>>>     to 1.1.5 instead of 1.1.2-SNAPSHOT in pom.xml as this latter is
no
>>>>>     longer provided at the repository).
>>>>>
>>>>>       Once built, I run mvn jetty:run and the server started
correctly:
>>>>>
>>>>>>     2016-02-02 11:01:51.957:INFO::jetty-6.1.26  [1]
>>>>>>     2016-02-02 11:01:52.804:INFO::No  [2] Transaction manager
found - if
>>>>>>     your webapp requires one, please configure one.
>>>>>>     2016-02-02 11:01:53,424 Application initialized.
>>>>>>     2016-02-02 11:01:53,442 Opening a Stomp server
localhost:54322
>>>>>>     2016-02-02 11:01:53.702:INFO::Started  [3]
>>>>>>     SelectChannelConnector@0.0.0.0:54321
>>>>>>     <mailto:SelectChannelConnector@0.0.0.0:54321>
>>>>>>     [INFO] Started Jetty Server
>>>>>>     [INFO] Starting scanner at interval of 10 seconds.
>>>>>       I could indeed verify it's listening on the VDSM port:
>>>>>
>>>>>>     [root@host ovirt-vdsmfake]# netstat -atpn | grep 54321
>>>>>>     tcp6       0      0
>>>>>>     :::54321
>>>>>>     :::*                    LISTEN
>>>>>>     44870/java
>>>>>       So the next step is to add a fake host via REST. I used
scripts
>>>>>     provided here [4] and I successfully added the host, however, it
>>>>>     starts installing all the VDSM packages as it were a normal host
and
>>>>>     therefore it tries to start vdsmd as well, which throws an error
as
>>>>>     the Jetty Server is already listening on the 54321 port. I shut
down
>>>>>     the Jetty Server and allowed oVirt Manager to install all the
packages
>>>>>     properly, then stopped vdsmd and started the Jetty Server, but
>>>>>     expectedly oVirt Engine fails with message "Host xxx is non
>>>>>     responsive", so what I actually got is a real VDSM host and
not a fake
>>>>>     one.
>>>>>
>>>>>       FWIW, the fake VDSM runs on a different host, ports are
reacheable
>>>>>     from the oVirt engine, proper /etc/hosts has been added to the
engine
>>>>>     to reach the host, and no further customization of web.xml has
been
>>>>>     done.
>>>>>
>>>>>       I feel like I'm missing something here. Could someone shed
some light
>>>>>     on what's wrong?
>>>>>
>>>>>       Thanks.
>>>>>
>>>>>       Nicolás

 @Nicolas I would recommend you to use the top of my gerrit patches to 
 run vdsmake:

   git clone git://gerrit.ovirt.org/ovirt-vdsmfake 
 <http://gerrit.ovirt.org/ovirt-vdsmfake>
   cd ovirt-vdsmfake
   git fetch git://gerrit.ovirt.org/ovirt-vdsmfake 
 <http://gerrit.ovirt.org/ovirt-vdsmfake> refs/changes/70/53570/2 && 
 git checkout FETCH_HEAD

 then follow the instructions in the README of the checked out 
 repository [3].

 Hope that helps.

 Best Regards,
 Roman

 [1] 

https://gerrit.ovirt.org/#/q/status:open+project:ovirt-vdsmfake+branch:ma...
 [2] https://gerrit.ovirt.org/#/c/53570/
 [3] https://gerrit.ovirt.org/#/c/53570/2/README

I could finally make fakevdsm work with your changes. Maybe I'm missing 
something but this works if the engine and the fake host are run on the 
same server - when I tried to run the fake host on a different host I 
wasn't seeing any responses from the host (the firewall was vanilla 
clean). In any case, I'm ok with both running on the same machine.

Will this be merged into master?

Thanks.

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    Hi Roman,<br>
    <br>
    <div class="moz-cite-prefix">El 16/02/16 a las 10:27, Roman Mohr
      escribió:<br>
    </div>
    <blockquote
cite="mid:CALDPj7sW0FuV+1jeqAAREkQOAhAdzeFb0Uq6hkXOeqST-aoYag@mail.gmail.com"
      type="cite">
      <div dir="ltr">On Fri, Feb 12, 2016 at 12:45 PM, Michal Skrivanek
        <span dir="ltr">&lt;<a moz-do-not-send="true"
            href="mailto:michal.skrivanek@redhat.com"
target=&quot;_blank&quot;&gt;michal.skrivanek(a)redhat.com&lt;/a&gt;&amp;gt;&lt;/span&gt;
        wrote:<br>
        <div>
          <div>
            <div class="gmail_extra">
              <div class="gmail_quote">
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px 0.8ex;border-left:1px solid
                  rgb(204,204,204);padding-left:1ex">
                  <div style="word-wrap:break-word"><br>
                    <div><span class="">
                        <blockquote type="cite">
                          <div>On 09 Feb 2016, at 12:15, Nicolás &lt;<a
                              moz-do-not-send="true"
                              href="mailto:nicolas@devels.es"
                              target="_blank"><a
class="moz-txt-link-abbreviated"
href="mailto:nicolas@devels.es">nicolas@devels.es</a></a>&gt;
                            wrote:</div>
                          <br>
                          <div>
                            <div text="#000000"
bgcolor="#FFFFFF"> Is
                              there a way to get an account on <a
                                moz-do-not-send="true"
                                href="http://mojo.redhat.com"
                                target="_blank">mojo.redhat.com</a> or
                              is it internal? I'm trying to open the
                              document but credentials are required and
                              I see no option to create an account.<br>
                            </div>
                          </div>
                        </blockquote>
                        <div><br>
                        </div>
                      </span>yes it is</div>
                    <div><br>
                    </div>
                    <div>Eldad, would you please move it to <a
                        moz-do-not-send="true"
href="http://ovirt.org"
                        target="_blank">ovirt.org</a>
instead?</div>
                    <div><br>
                    </div>
                  </div>
                </blockquote>
                <div><br>
                </div>
                <div>I recently played with fakevdsm myself. The result
                  was the patch series in [1]. At least an updated
                  README for the result of my patches can be found in
                  [2].<br>
                </div>
                <div> </div>
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px 0.8ex;border-left:1px solid
                  rgb(204,204,204);padding-left:1ex">
                  <div style="word-wrap:break-word">
                    <div>Thanks,</div>
                    <div>michal</div>
                    <div>
                      <div class="h5">
                        <div><br>
                          <blockquote type="cite">
                            <div>
                              <div text="#000000"
bgcolor="#FFFFFF"> <br>
                                <div>El 04/02/16 a las 13:49, emarcian
                                  escribió:<br>
                                </div>
                                <blockquote type="cite"> <font
                                    color="#333333"><small><font
                                        face="Helvetica, Arial,
                                        sans-serif">Hi,</font><br>
                                      <font face="Helvetica, Arial,
                                        sans-serif">Seems like you need
                                        to change this settings
</font><span><font
                                          face="Helvetica, Arial,
                                          sans-serif">update vdc_options
                                          set option_value='false' where
                                          option_name='InstallVds';
</font></span><br>
                                      <span><font face="Helvetica,
                                          Arial, sans-serif">follow the
                                          instructions
here:</font></span><br>
                                      <span><font face="Helvetica,
                                          Arial, sans-serif"><a
                                            moz-do-not-send="true"

href="https://mojo.redhat.com/docs/DOC-990399"
                                            target="_blank"><a
class="moz-txt-link-freetext"
href="https://mojo.redhat.com/docs/DOC-990399">https://mojo....
                                      <span></span><br>
                                      <span><font face="Helvetica,
                                          Arial, sans-serif">in case you
                                          using 3.6 there is a new war
                                          (if you run the simulator as

standalone).</font></span><br>
                                      <span></span></small><br>
                                    <span><font face="Helvetica, Arial,

sans-serif">-Eldad</font></span></font>
                                  <br>
                                  <span></span><span

style="color:rgb(61,61,61);font-family:&quot;Helvetica
                                    Neue&quot;,Helvetica,Arial,&quot;Lucida
Grande&quot;,sans-serif;font-size:14px;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:19.0909px;text-align:left;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;display:inline!important;float:none;background-color:rgb(255,255,255)"><br>
                                  </span><br>
                                  <div>On 02/04/2016 03:04 PM, Piotr
                                    Kliczewski wrote:<br>
                                  </div>
                                  <blockquote type="cite">
                                    <pre>Eldad is working on making it working with
engine 3.6. He should be able to
give you information you need.

On Wed, Feb 3, 2016 at 12:33 PM,  <a moz-do-not-send="true"
href="mailto:nicolas@devels.es"
target=&quot;_blank&quot;&gt;&amp;lt;nicolas(a)devels.es&amp;gt;&lt;/a&gt; wrote:
</pre>
                                    <blockquote type="cite">
                                      <pre>Anything?

El 2016-02-02 10:18, Nicolás escribió:
</pre>
                                      <blockquote type="cite">
                                        <pre>Hi,

 I'm trying to set up VDSM-Fake
(<a
moz-do-not-send="true">git://gerrit.ovirt.org/ovirt-vdsmfake...>)
for some tests, however,
I'm a bit confused about how does it actually work. As the
instructions say, I was able to build the project with Maven (however,
the org.ovirt.vdsm-jsonrpc-java dependency version had to be changed
to 1.1.5 instead of 1.1.2-SNAPSHOT in pom.xml as this latter is no
longer provided at the repository).

 Once built, I run mvn jetty:run and the server started correctly:

</pre>
                                        <blockquote type="cite">
                                          <pre>2016-02-02 11:01:51.957:<a
moz-do-not-send="true">INFO::jetty-6.1.26</a> [1]
2016-02-02 11:01:52.804:<a moz-do-not-send="true">INFO::No</a> [2]
Transaction manager found - if
your webapp requires one, please configure one.
2016-02-02 11:01:53,424 Application initialized.
2016-02-02 11:01:53,442 Opening a Stomp server localhost:54322
2016-02-02 11:01:53.702:<a moz-do-not-send="true">INFO::Started</a>
[3]
<a moz-do-not-send="true"
href="mailto:SelectChannelConnector@0.0.0.0:54321"
target="_blank">SelectChannelConnector@0.0.0.0:54321</a>
[INFO] Started Jetty Server
[INFO] Starting scanner at interval of 10 seconds.
</pre>
                                        </blockquote>
                                        <pre> I could indeed verify it's
listening on the VDSM port:

</pre>
                                        <blockquote type="cite">
                                          <pre>[root@host ovirt-vdsmfake]# netstat
-atpn | grep 54321
tcp6       0      0
:::54321
:::*                    LISTEN
44870/java
</pre>
                                        </blockquote>
                                        <pre> So the next step is to add a fake host
via REST. I used scripts
provided here [4] and I successfully added the host, however, it
starts installing all the VDSM packages as it were a normal host and
therefore it tries to start vdsmd as well, which throws an error as
the Jetty Server is already listening on the 54321 port. I shut down
the Jetty Server and allowed oVirt Manager to install all the packages
properly, then stopped vdsmd and started the Jetty Server, but
expectedly oVirt Engine fails with message "Host xxx is non
responsive", so what I actually got is a real VDSM host and not a fake
one.

 FWIW, the fake VDSM runs on a different host, ports are reacheable
from the oVirt engine, proper /etc/hosts has been added to the engine
to reach the host, and no further customization of web.xml has been
done.

 I feel like I'm missing something here. Could someone shed some light
on what's wrong?

 Thanks.

 Nicolás
</pre>
                                      </blockquote>
                                    </blockquote>
                                  </blockquote>
                                </blockquote>
                              </div>
                            </div>
                          </blockquote>
                        </div>
                      </div>
                    </div>
                  </div>
                </blockquote>
                <div><br>
                </div>
                <div>@Nicolas I would recommend you to use the top of my
                  gerrit patches to run vdsmake:<br>
                  <br>
                    git clone git://<a moz-do-not-send="true"

href="http://gerrit.ovirt.org/ovirt-vdsmfake">gerrit.ovirt.o...
                    cd ovirt-vdsmfake<br>
                    git fetch git://<a moz-do-not-send="true"

href="http://gerrit.ovirt.org/ovirt-vdsmfake">gerrit.ovirt.o...
                  refs/changes/70/53570/2 &amp;&amp; git checkout
                  FETCH_HEAD<br>
                </div>
                <div>  <br>
                </div>
                <div>then follow the instructions in the README of the
                  checked out repository [3].<br>
                  <br>
                </div>
                <div>Hope that helps. <br>
                  <br>
                </div>
                <div>Best Regards,<br>
                </div>
                <div>Roman<br>
                </div>
                <blockquote class="gmail_quote" style="margin:0px 0px
                  0px 0.8ex;border-left:1px solid
                  rgb(204,204,204);padding-left:1ex">
                  <br>
                </blockquote>
                <div>[1] <a moz-do-not-send="true"
href="https://gerrit.ovirt.org/#/q/status:open+project:ovirt-vdsmfak...
                  [2] <a moz-do-not-send="true"

href="https://gerrit.ovirt.org/#/c/53570/">https://gerrit.ov...
                  [3] <a moz-do-not-send="true"

href="https://gerrit.ovirt.org/#/c/53570/2/README">https://g...
                  <br>
                </div>
              </div>
              <br>
            </div>
          </div>
        </div>
      </div>
    </blockquote>
    <br>
    I could finally make fakevdsm work with your changes. Maybe I'm
    missing something but this works if the engine and the fake host are
    run on the same server - when I tried to run the fake host on a
    different host I wasn't seeing any responses from the host (the
    firewall was vanilla clean). In any case, I'm ok with both running
    on the same machine.<br>
    <br>
    Will this be merged into master?<br>
    <br>
    Thanks.<br>
  </body>
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Re: [ovirt-users] How does VDSM-Fake actually work?