<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<p>Ha! I got it - I had apache configured as SSL-only. That is: http
at port 80 was hard redirected to https at port 443. I changed the
config to only use http, and now it works. For now that's not
critical - this is an experimental server accessible only from
our internal network, I can try to fix this later.</p>
<p>Now I'll start playing with the visualizer app. So far it seems
to work pretty well - I just need to make it use all available
resources (it just runs sigle-core).<br>
</p>
<p><br>
</p>
<p>Thank you for your help, Sebastien!<br>
</p>
<p><br>
</p>
<p><br>
</p>
<p>For the record, this was the apache config that didn't work:</p>
<p>NameVirtualHost *:80<br>
<VirtualHost *:80><br>
ServerName vbl-sim.eli-beams.eu<br>
Redirect permanent / <a class="moz-txt-link-freetext" href="https://vbl-sim.eli-beams.eu/">https://vbl-sim.eli-beams.eu/</a><br>
</VirtualHost><br>
<br>
NameVirtualHost *:443<br>
<VirtualHost *:443><br>
ServerName vbl-sim.eli-beams.eu<br>
ServerAdmin <a class="moz-txt-link-abbreviated" href="mailto:jiri.vyskocil@eli-beams.eu">jiri.vyskocil@eli-beams.eu</a><br>
DocumentRoot /usr/local/share/paraview-5.0/www/<br>
<br>
ErrorLog "logs/pv-error_log"<br>
CustomLog "logs/pv-access_log" common<br>
<br>
<Location /usr/local/share/paraview-5.0/www/><br>
SSLRequireSSL On<br>
SSLVerifyClient optional<br>
SSLVerifyDepth 1<br>
SSLOptions +StdEnvVars +StrictRequire<br>
</Location><br>
<br>
ProxyPass /paraview <a class="moz-txt-link-freetext" href="http://localhost:9000/paraview">http://localhost:9000/paraview</a><br>
RewriteEngine On<br>
RewriteMap session-to-port
txt:/etc/httpd/paraview-mapping/proxy.txt<br>
RewriteCond %{QUERY_STRING} ^sessionId=(.*)$ [NC]<br>
RewriteRule ^/proxy.*$ <a class="moz-txt-link-freetext" href="ws://$">ws://$</a>{session-to-port:%1}/ws [P]<br>
<br>
SSLEngine on<br>
SSLCertificateFile /etc/pki/tls/certs/vblpar.crt<br>
SSLCertificateKeyFile /etc/pki/tls/private/vblpar.key<br>
<br>
<Directory /usr/local/share/paraview-5.0/www/><br>
Options Indexes FollowSymLinks<br>
Order allow,deny<br>
Allow from all<br>
AllowOverride None<br>
Require all granted<br>
</Directory><br>
<br>
</VirtualHost><br>
<br>
<br>
</p>
<p><br>
</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 06/05/16 16:54, Sebastien Jourdain
wrote:<br>
</div>
<blockquote
cite="mid:CABObKxeTmnhJ4Mz72F7SB2OXBr-K=++1BYQmhSF6mjS38yHdww@mail.gmail.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<div dir="ltr">You are getting really close...
<div><br>
</div>
<div>Basically you have the ParaView process that properly
started at the request of the client and waits to it to
connect, which never happen.</div>
<div><br>
</div>
<div>Usually that mean, you have a mistake either in your Apache
config and/or in your launcher.</div>
<div><br>
</div>
<div>Could you share your Apache virtual host with your launcher
config along with the URL the web client connects to?</div>
<div><br>
</div>
<div>Seb</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, May 6, 2016 at 5:47 AM, Jiří
Vyskočil <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:jiri.vyskocil@fjfi.cvut.cz" target="_blank">jiri.vyskocil@fjfi.cvut.cz</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<p>One more step closer to the goal it seems - if run:</p>
<p><br>
</p>
<p>export XAUTHORITY=/var/run/slim/slim.auth<br>
DISPLAY=:0 xhost +</p>
<p><br>
</p>
<p>as root, I can get the launcher to start, and not die
with an X-related error (cumbersome workaround, but I
guess I can find a better way later). <br>
</p>
<p><br>
</p>
<p>[paraview@vbl-sim ~] $ cat
/etc/httpd/paraview-mapping/proxy.txt <br>
be12802a-137f-11e6-b12c-002590e6af35 <a
moz-do-not-send="true"
href="http://vbl-sim.eli-beams.eu:9003"
target="_blank">vbl-sim.eli-beams.eu:9003</a><br>
</p>
<p>[paraview@vbl-sim ~] $ ps aux | grep pvpython<br>
paraview 1792 1.2 0.1 1393740 144956 pts/1 S+
13:42 0:02 /usr/local/lib/paraview-5.0/pvpython
/usr/local/lib/paraview-5.0/site-packages/vtk/web/launcher.py
/etc/httpd/paraview-launcher.config -d<br>
paraview 1887 1.6 0.1 1519164 237520 pts/1 Sl+
13:43 0:02 /usr/local/lib/paraview-5.0/pvpython -dr
/usr/local/lib/paraview-5.0/site-packages/paraview/web/pv_web_visualizer.py
--port 9003 --data-dir /var/paraview/data -f --authKey
3ZXwyWwTz7aPjT9p</p>
<p><br>
</p>
<p>Now when I try to open an app from the browser, it
still doesn't work (waits forever to load some part,
etc.), and I see thist in the paraview log:</p>
<p><br>
</p>
<p>[strazce@vbl-sim ~] $ cat
/var/log/paraview-viz-logs/be12802a-137f-11e6-b12c-002590e6af35.txt
<br>
2016-05-06 13:43:27+0200 [-] Log opened.<br>
2016-05-06 13:43:27+0200 [-] Site starting on 9003<br>
2016-05-06 13:43:27+0200 [-] Starting factory
<twisted.web.server.Site instance at
0x7fd34014f3b0><br>
2016-05-06 13:43:27+0200 [-]
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++<br>
2016-05-06 13:43:27+0200 [-]
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++<br>
<br>
</p>
<p><br>
</p>
and a lot of lines which contain just the repeating plus
signs. <br>
<span class="">
<p><br>
</p>
<p><br>
</p>
<p><br>
</p>
<p><br>
</p>
<p><br>
</p>
<br>
<div>On 05/05/16 16:23, Sebastien Jourdain wrote:<br>
</div>
</span>
<div>
<div class="h5">
<blockquote type="cite">
<div dir="ltr">You were on the right track with
DISPLAY=:0 but I'm wondering if you setup a
"virtual" monitor or if your "paraview" user is
auto logged in a X session or if it stuck at the
"login" panel?
<div><br>
</div>
<div>You can find some information about the
virtual screen here: (Search for "Screen")</div>
<div><br>
</div>
<div><a moz-do-not-send="true"
href="http://kitware.github.io/paraviewweb/docs/guides/graphics_on_ec2_g2.html"
target="_blank">http://kitware.github.io/paraviewweb/docs/guides/graphics_on_ec2_g2.html</a><br>
</div>
<div><br>
</div>
<div>And for the autologin if it is needed. (Note
on EC2 the user start X hence no need to
login...)</div>
<div><br>
</div>
<div><a moz-do-not-send="true"
href="https://github.com/Kitware/paraviewweb/blob/master/tools/ansible/roles/paraview/tasks/Ubuntu.yml"
target="_blank">https://github.com/Kitware/paraviewweb/blob/master/tools/ansible/roles/paraview/tasks/Ubuntu.yml</a><br>
</div>
<div><br>
</div>
<div>Seb</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, May 5, 2016 at
6:58 AM, Jiří Vyskočil <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:jiri.vyskocil@fjfi.cvut.cz"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:jiri.vyskocil@fjfi.cvut.cz">jiri.vyskocil@fjfi.cvut.cz</a></a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">Hello,<br>
<br>
<br>
I'm trying to set up a Paraview Web server on
a Fedora 23 machine. The serves is not
connected to a monitor or a keyboard (I only
have access through ssh), but it has a nvidia
GPU which I want to use for paraview.<br>
<br>
<br>
I have installed xdm to run the X server, and
verified that it is in fact running with the
correct nvidia drivers (by checking the
Xorg.0.log file). The problem is I don't know
how to run the paraview webserver on the X
display when there's no one physically logged
in - I can only get to the server via ssh.
When I log in, and switch to the paraview
user, the DISPLAY and XAUTHORITY variables are
empty.<br>
<br>
<br>
The webserver itself is running (apache + the
python launcher), but when I try to open any
of the example applications, I get an error
like this:<br>
<br>
<br>
$ ./launch-paraview.sh<br>
2016-05-05 14:54:17,528:<a
moz-do-not-send="true"><a class="moz-txt-link-freetext" href="INFO:twisted:Site">INFO:twisted:Site</a></a>
starting on 9000<br>
2016-05-05 14:54:17,528:<a
moz-do-not-send="true"><a class="moz-txt-link-freetext" href="INFO:twisted:Starting">INFO:twisted:Starting</a></a>
factory <twisted.web.server.Site instance
at 0x7fe20da6a998><br>
2016-05-05 14:55:09,655:<a
moz-do-not-send="true"><a class="moz-txt-link-freetext" href="INFO:twisted">INFO:twisted</a></a>:"127.0.0.1"
- - [05/May/2016:12:55:09 +0000] "POST
/paraview/ HTTP/1.1" 503 78 "<a
moz-do-not-send="true"
href="https://vbl-sim.eli-beams.eu/apps/Visualizer/"
rel="noreferrer" target="_blank"><a class="moz-txt-link-freetext" href="https://vbl-sim.eli-beams.eu/apps/Visualizer/">https://vbl-sim.eli-beams.eu/apps/Visualizer/</a></a>"
"Mozilla/5.0 (X11; Fedora; Linux x86_64;
rv:45.0) Gecko/20100101 Firefox/45.0"<br>
<br>
<br>
$ cat 965318f2-12c0-11e6-a3cb-002590e6af35.txt<br>
2016-05-05 14:55:06+0200 [-] Log opened.<br>
ERROR: In
/home/strazce/hax/ParaView-v5.0.0-source/VTK/Rendering/OpenGL/vtkXOpenGLRenderWindow.cxx,
line 333<br>
vtkXOpenGLRenderWindow (0x3f00be0): bad X
server connection. DISPLAY=<br>
<br>
<br>
Specifying DISPLAY=:0 when running the
launcher gives this error:<br>
<br>
$ cat e73921bc-12c0-11e6-b002-002590e6af35.txt<br>
2016-05-05 14:57:22+0200 [-] Log opened.<br>
No protocol specified<br>
No protocol specified<br>
No protocol specified<br>
ERROR: In
/home/strazce/hax/ParaView-v5.0.0-source/VTK/Rendering/OpenGL/vtkXOpenGLRenderWindow.cxx,
line 333<br>
vtkXOpenGLRenderWindow (0x4127c10): bad X
server connection. DISPLAY=:0. Aborting.<br>
<br>
<br>
<br>
Thanks for any hints,<br>
<br>
Jiri<br>
<br>
<br>
<br>
<br>
_______________________________________________<br>
Powered by <a moz-do-not-send="true"
href="http://www.kitware.com"
rel="noreferrer" target="_blank">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a
moz-do-not-send="true"
href="http://www.kitware.com/opensource/opensource.html"
target="_blank"><a class="moz-txt-link-freetext" href="http://www.kitware.com/opensource/opensource.html">http://www.kitware.com/opensource/opensource.html</a></a><br>
<br>
Please keep messages on-topic and check the
ParaView Wiki at: <a moz-do-not-send="true"
href="http://paraview.org/Wiki/ParaView"
rel="noreferrer" target="_blank">http://paraview.org/Wiki/ParaView</a><br>
<br>
Search the list archives at: <a
moz-do-not-send="true"
href="http://markmail.org/search/?q=ParaView"
rel="noreferrer" target="_blank"><a class="moz-txt-link-freetext" href="http://markmail.org/search/?q=ParaView">http://markmail.org/search/?q=ParaView</a></a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
<a moz-do-not-send="true"
href="http://public.kitware.com/mailman/listinfo/paraview"
rel="noreferrer" target="_blank">http://public.kitware.com/mailman/listinfo/paraview</a><br>
<br>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
</div>
</div>
</div>
<br>
_______________________________________________<br>
Powered by <a moz-do-not-send="true"
href="http://www.kitware.com" rel="noreferrer"
target="_blank">www.kitware.com</a><br>
<br>
Visit other Kitware open-source projects at <a
moz-do-not-send="true"
href="http://www.kitware.com/opensource/opensource.html"
rel="noreferrer" target="_blank"><a class="moz-txt-link-freetext" href="http://www.kitware.com/opensource/opensource.html">http://www.kitware.com/opensource/opensource.html</a></a><br>
<br>
Please keep messages on-topic and check the ParaView Wiki
at: <a moz-do-not-send="true"
href="http://paraview.org/Wiki/ParaView" rel="noreferrer"
target="_blank">http://paraview.org/Wiki/ParaView</a><br>
<br>
Search the list archives at: <a moz-do-not-send="true"
href="http://markmail.org/search/?q=ParaView"
rel="noreferrer" target="_blank">http://markmail.org/search/?q=ParaView</a><br>
<br>
Follow this link to subscribe/unsubscribe:<br>
<a moz-do-not-send="true"
href="http://public.kitware.com/mailman/listinfo/paraview"
rel="noreferrer" target="_blank">http://public.kitware.com/mailman/listinfo/paraview</a><br>
<br>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
</body>
</html>