[Paraview] paraview web issue

Tue Nov 25 22:04:55 EST 2014

BTW, once you update the configuration file, you will need to restart that
launcher process.
It is not smart enough to watch that file. ;-)

And down the road, if you want to use different machine for the Viz, you
can issue some ssh command to remotely start that ParaView process even
with mpi/pvserver.

Seb

On Tue, Nov 25, 2014 at 8:01 PM, Sebastien Jourdain <
sebastien.jourdain at kitware.com> wrote:

> Found the issue! Or at least I think I do ;-)
>
> The short answer is that the "ready_line" property inside your
> launcher.json file should be "Starting factory" and not "Starting factory -
> XYZ" for all the command lines. (Like written in the documentation ;-)
>
> The reason is that the launcher look for that exact String in the output
> of the process that it runs. This allow to know when the process is ready.
> And the line "Starting factory - XYZ" never show up, hence the error message
> "Session did not start before timeout expired. Check session logs." has it
> think the process is not ready.
>
> Let me know if you run into something else.
>
> Seb
>
>
>
>
> On Tue, Nov 25, 2014 at 5:00 PM, Burlen Loring <bloring at lbl.gov> wrote:
>
>>  Hi Sebastien,
>>
>> OK, I finally upgrade to Ubuntu 14.04 and apache 2.4! however, I still
>> have some issue. again I see the render window pop up in the background, in
>> the browser I have the ParaView web logo and spinning wheel, now after a
>> few seconds a dialog: Session did not start before timeout expired. Check
>> session logs.
>>
>> I cranked up the log verbosity in apache. attached everything.  Any idea
>> what the problem is? how to get more info? paraview has an error, how does
>> that get reported?
>>
>> Thanks
>> Burlen
>>
>>
>> On 11/24/2014 12:48 PM, Sebastien Jourdain wrote:
>>
>> Apache 2.2 will probably be an issue as WS forwarding was not properly
>> supported with url rewrite.
>>
>>  You may need to build Apache yourself on that distribution. The one
>> that have all the fix and is supposed to work is 2.4.7+.
>>
>>  We have some additional documentation about that part here:
>>
>>
>> http://www.paraview.org/ParaView3/Doc/Nightly/www/js-doc/index.html#!/guide/apache_front_end
>>
>>  Seb
>>
>> On Mon, Nov 24, 2014 at 12:47 PM, Burlen Loring <bloring at lbl.gov> wrote:
>>
>>>  Hi Sebastien,
>>>
>>> this is for a public deployment but I am testing in the browser while it
>>> locally logged into the system. This server is running ubuntu 11.04, apache
>>> 2.2.22. I hope that this isn't a roadblock.I can't easily upgrade.
>>>
>>> your instructions for 14.04 went off OK but in 2 spots I had to find a
>>> work around:
>>> 1) proxy_wstunnel had to be installed manually, this went without a
>>> hitch and it loaded up without error
>>> 2) in the apache config I had to comment #Require all granted as that
>>> wasn't valid in 2.2
>>>
>>> the session id was in the proxy.txt file and had the port number 9100
>>> which I see elsewhere in the logs, so that looks OK.
>>>
>>> I'm attaching the launcher config.
>>>
>>> the apache config is pasted below.
>>>
>>> 131
>>> ################################################################################333
>>> 132 <VirtualHost *:80>
>>> 133     ServerName paraview.lbl.gov
>>> 134     ServerAdmin bloring at lbl.gov
>>> 135     DocumentRoot /var/www/ParaView/www
>>> 136     ErrorLog "/var/www/ParaView/logs/error.log"
>>> 137     CustomLog "/var/www/ParaView/logs/access.log" common
>>> 138
>>> 139     <Directory "/var/www/ParaView/www">
>>> 140         Options Indexes FollowSymLinks
>>> 141         Order allow,deny
>>> 142         Allow from all
>>> 143         AllowOverride None
>>> 144         #for ver >= 2.4
>>> 145         #Require all granted
>>> 146     </Directory>
>>> 147
>>> 148     # Handle launcher forwarding
>>> 149     ProxyPass /paraview http://localhost:8080/paraview
>>> 150
>>> 151     # Handle WebSocket forwarding
>>> 152     RewriteEngine On
>>> 153     RewriteMap  session-to-port txt:/var/www/ParaView/proxy.txt
>>> 154     RewriteCond %{QUERY_STRING} ^sessionId=(.*)$ [NC]
>>> 155     RewriteRule ^/proxy.*$ ws://${session-to-port:%1}/ws [P]
>>> 156 </VirtualHost>
>>>
>>>
>>> On 11/24/2014 10:02 AM, Sebastien Jourdain wrote:
>>>
>>> Hi Burlen,
>>>
>>>  Just to make sure, you are performing the install on an Ubuntu 14.04 ?
>>>
>>>  Are you trying to try it locally first using "localhost", or are you
>>> targeting a real deploy with a real host name?
>>>
>>>  Can you share your config file for the launcher + apache?
>>> (You can do it privately depending on your target deploy / security)
>>>
>>>  Moreover, can you validate that the session id c3079f24-73f9-11e4-a023-002590202132
>>>  was properly mapped inside the text file that is shared between Apache and
>>> the Python launcher?
>>>
>>>  Thanks,
>>>
>>>  Seb
>>>
>>>
>>>
>>> On Mon, Nov 24, 2014 at 10:29 AM, burlen <burlen.loring at gmail.com>
>>> wrote:
>>>
>>>>  Hi All,
>>>>
>>>> Making an attempt to install ParaView web. I need some assistance in
>>>> trouble shooting. I am attaching a set of logs from a single attempt. I'm
>>>> following the instructions for Ubuntu 14.04
>>>> <http://www.paraview.org/ParaView3/Doc/Nightly/www/js-doc/index.html#%21/guide/ubuntu_14_04>.
>>>> I see the x11 render window open, but the web page shows nothing.
>>>>
>>>> from the error log
>>>> [Mon Nov 24 08:48:53 2014] [error] [client 131.243.240.15] File does
>>>> not exist: /var/www/ParaView/www/ws:
>>>>
>>>> from the access log
>>>> 131.243.240.15 - - [24/Nov/2014:08:48:53 -0800] "GET /
>>>> ws://localhost:9100/ws?sessionId=c3079f24-73f9-11e4-a023-002590202132
>>>> HTTP/1.1" 404 513
>>>> 131.243.240.15 - - [24/Nov/2014:08:48:53 -0800] "GET
>>>> /proxy?sessionId=c3079f24-73f9-11e4-a023-002590202132 HTTP/1.1" 404 457
>>>>
>>>> Seems that the problem potentially relates to web sockets. How can I
>>>> get further info about what's failing? Can anyone give some hint on
>>>> troubleshooting this issue?
>>>>
>>>> Burlen
>>>>
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>>>
>>>
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>>
>>
>
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