Re: [Zope-dev] web sites are keep crashing

2011-08-27 Thread Tres Seaver
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

On 08/26/2011 10:24 PM, Babylakshmi Muthusamy wrote:

 We have 3 sites running in the same web server. In one of them, i
 migrated the database from ZODB to mySQL.

Do you mean that you migrated from Filestorage to RelStorage, backed by
MySQL, or do you mean that you re-wrote your application to use MySQL
directly (maybe via Products.ZMySQLDA)?

 After uploading the migrated site back, all the sites are crashing
 very often.

Crashing seems to imply that your Zope server is stopping:  the
indivdual sites you serve from that serve can't crash, per se.  Or do
you mean that they are displaying error pages?

If the Zope server process is actually stopping, there may be something
in the error log which helps diagnose the problem.

If there is nothing in the error log, then it seems likely that your
server is segfaulting (maybe due to a bug in the MySQL library, or else
it is built improperly).  In that case, you might learn something by
running the server in the foreground (e.g, 'bin/zopectl fg', instead of
'bin/zopectl start'), or with coredumps enabled.



Tres.
- -- 
===
Tres Seaver  +1 540-429-0999  tsea...@palladion.com
Palladion Software   Excellence by Designhttp://palladion.com
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Re: [Zope-dev] web sites are keep crashing

2011-08-26 Thread Babylakshmi Muthusamy
Hi AJ,

I have moved one of the site's database from ZODB to mysql. Should I have to
change any of the configuration?

Thanks,
Babylakshmi

On Thu, Aug 25, 2011 at 4:06 PM, Andreas Jung li...@zopyx.com wrote:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1



 Babylakshmi Muthusamy wrote:

  /usr/local/zope/ZoPe/lib/python/Products/PPD/Extensions/Fetch_Graph.py,
 
 
 line 349, in Make_Graph
  Module PIL.Image, line 1717, in open IOError: [Errno 2] No such file
  or directory: '/usr/local/zope/PPD/architecture/domains/IL4.png'
  

 This is not a Zope issue but obviously a problem of your application
 trying to load an image from the filesystem for processing through PIL.
 I doubt that there is nothing we can do...your application, your code...
 But I doubt that this error would cause a Zope shutdown or something
 similar. Such errors are usually logged and the worker thread continues
 to work with the next request. Such an error is not typical for a fatal
 Zope server failure.

 - -aj


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Re: [Zope-dev] web sites are keep crashing

2011-08-26 Thread Charlie Clark
Am 26.08.2011, 15:27 Uhr, schrieb Babylakshmi Muthusamy  
babylakshmim...@gmail.com:

 Hi AJ,
 I have moved one of the site's database from ZODB to mysql. Should I  
 have to
 change any of the configuration?

Hi Babylakshimani,

that change has nothing to do with the problem. Does your Zope-user have  
access to files in /usr/local/zope/PPD/architecture/domains/

BTW. as you say you are new to Zope, what documentation have you been  
given.

Charlie
-- 
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Managing Director
Clark Consulting  Research
German Office
Helmholtzstr. 20
Düsseldorf
D- 40215
Tel: +49-211-600-3657
Mobile: +49-178-782-6226
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Re: [Zope-dev] web sites are keep crashing

2011-08-26 Thread Babylakshmi Muthusamy
Hi,

The site error which i posted is fixed now. the image file was not present
in the specified location. After discussions with others in this board, I
realized that all the 3 sites are crashing not because of this error.
I would like to restate my issue clearly.
We have 3 sites running in the same web server. In one of them, i migrated
the database from ZODB to mySQL. After uploading the migrated site back, all
the sites are crashing very often.
There is no documentation available. I have fair experience in zope
development. but not in hosting.
Any help is highly appreciated.

Thanks,
Babylakshmi


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   1. Re: web sites are keep crashing (Charlie Clark)


 --

 Message: 1
 Date: Fri, 26 Aug 2011 15:34:11 +0200
 From: Charlie Clark charlie.cl...@clark-consulting.eu
 Subject: Re: [Zope-dev] web sites are keep crashing
 To: zope-dev@zope.org
 Message-ID: op.v0tpa9f55mynk9@fuchsia.local
 Content-Type: text/plain; charset=utf-8; format=flowed; delsp=yes

 Am 26.08.2011, 15:27 Uhr, schrieb Babylakshmi Muthusamy
 babylakshmim...@gmail.com:

  Hi AJ,
  I have moved one of the site's database from ZODB to mysql. Should I
  have to
  change any of the configuration?

 Hi Babylakshimani,

 that change has nothing to do with the problem. Does your Zope-user have
 access to files in /usr/local/zope/PPD/architecture/domains/

 BTW. as you say you are new to Zope, what documentation have you been
 given.

 Charlie
 --
 Charlie Clark
 Managing Director
 Clark Consulting  Research
 German Office
 Helmholtzstr. 20
 D?sseldorf
 D- 40215
 Tel: +49-211-600-3657
 Mobile: +49-178-782-6226


 --

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Re: [Zope-dev] web sites are keep crashing

2011-08-25 Thread Babylakshmi Muthusamy
Hi AJ,

Thank you for your reply. I checked the error logs and found that site is
showing proxy error rather than showing 'site error' where there were
programmatic bugs.

In the error log below, there is a image file missing. This breaks the site
and shows 502 proxy error.

I would like to know whether we can change the proxy error to site error
which wont affect the uptime of the site.

Thanks,
Babylakshmi
-
2011-08-24T18:48:25 ERROR Zope.SiteErrorLog
http://www.plasmaproteomedatabase.org/molecule_page
Traceback (innermost last):
  Module ZPublisher.Publish, line 115, in publish
  Module ZPublisher.mapply, line 88, in mapply
  Module ZPublisher.Publish, line 41, in call_object
  Module OFS.DTMLMethod, line 144, in __call__
   - DTMLMethod at /sites/PPD_new/molecule_page
   - URL: http://www.plasmaproteomedatabase.org/molecule_page/manage_main
   - Physical Path: /sites/PPD_new/molecule_page
  Module DocumentTemplate.DT_String, line 476, in __call__
  Module DocumentTemplate.DT_Util, line 196, in eval
   - __traceback_info__: Fetch_Graph
  Module string, line 1, in expression
  Module Products.ExternalMethod.ExternalMethod, line 225, in __call__
   - __traceback_info__: (('HPRD_00981', 'HPRD_00981_2'), {}, None)
  Module
/usr/local/zope/ZoPe/lib/python/Products/PPD/Extensions/Fetch_Graph.py, line
87, in Fetch_Graph
  Module
/usr/local/zope/ZoPe/lib/python/Products/PPD/Extensions/Fetch_Graph.py, line
349, in Make_Graph
  Module PIL.Image, line 1717, in open
IOError: [Errno 2] No such file or directory:
'/usr/local/zope/PPD/architecture/domains/IL4.png'

On Wed, Aug 24, 2011 at 3:06 PM, Andreas Jung li...@zopyx.com wrote:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

 Look at the event.log file (or however it is called on your
 installation). In general find your 'log' folder first (sniff into
 your zope.conf file to figure out the location).

 - -aj

 Babylakshmi Muthusamy wrote:
  Hi aj,
 
  Thanks for the immediate reply. I am a newbie for zope. I don't know
  from where we can get those files. Could you please help me
  providing file paths?
 
  Thanks, Babylakshmi
 
  On Wed, Aug 24, 2011 at 1:04 PM, Andreas Jung li...@zopyx.com
  mailto:li...@zopyx.com wrote:
 
  The first thing is provide accurate information like information from
  tracebacks, core dump files etc.
 
  -aj
 
  Babylakshmi Muthusamy wrote:
  Hi All,
 
  We have hosted 3 websites in a single web server with 4GB RAM. All
  the three sites were built using zope. Almost every day the sites
  are crashing with 504-proxy error. The sites are up when i restart
  the httpd and zope.  Why this happens all the time? Your help on
  fixing this issue is greatly appreciated.
 
  Thanks and regards, Babylakshmi
 
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Re: [Zope-dev] web sites are keep crashing

2011-08-25 Thread Lennart Regebro
On Thu, Aug 25, 2011 at 10:34, Babylakshmi Muthusamy
babylakshmim...@gmail.com wrote:
 I would like to know whether we can change the proxy error to site error
 which wont affect the uptime of the site.

By default the proxy you have in front (Apache?) should not show 502
in these cases. This may be a problem in the configuration of that
proxy. It could also be that the Zope application you have catches the
error and then returns an empty response instead of the normal error
page. In that case the application needs to be fixed.

//Lennart
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Re: [Zope-dev] web sites are keep crashing

2011-08-25 Thread Andreas Jung
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1



Babylakshmi Muthusamy wrote:

 /usr/local/zope/ZoPe/lib/python/Products/PPD/Extensions/Fetch_Graph.py,

 
line 349, in Make_Graph
 Module PIL.Image, line 1717, in open IOError: [Errno 2] No such file
 or directory: '/usr/local/zope/PPD/architecture/domains/IL4.png' 
 

This is not a Zope issue but obviously a problem of your application
trying to load an image from the filesystem for processing through PIL.
I doubt that there is nothing we can do...your application, your code...
But I doubt that this error would cause a Zope shutdown or something
similar. Such errors are usually logged and the worker thread continues
to work with the next request. Such an error is not typical for a fatal
Zope server failure.

- -aj


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[Zope-dev] web sites are keep crashing

2011-08-24 Thread Babylakshmi Muthusamy
Hi All,

We have hosted 3 websites in a single web server with 4GB RAM. All the three
sites were built using zope. Almost every day the sites are crashing with
504-proxy error.
The sites are up when i restart the httpd and zope.  Why this happens all
the time? Your help on fixing this issue is greatly appreciated.

Thanks and regards,
Babylakshmi
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Re: [Zope-dev] web sites are keep crashing

2011-08-24 Thread Andreas Jung
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

The first thing is provide accurate information like information
from tracebacks, core dump files etc.

- -aj

Babylakshmi Muthusamy wrote:
 Hi All,
 
 We have hosted 3 websites in a single web server with 4GB RAM. All
 the three sites were built using zope. Almost every day the sites
 are crashing with 504-proxy error. The sites are up when i restart
 the httpd and zope.  Why this happens all the time? Your help on
 fixing this issue is greatly appreciated.
 
 Thanks and regards, Babylakshmi
 
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- 
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Re: [Zope-dev] web sites are keep crashing

2011-08-24 Thread Babylakshmi Muthusamy
Hi aj,

Thanks for the immediate reply. I am a newbie for zope. I don't know from
where we can get those files. Could you please help me providing file paths?

Thanks,
Babylakshmi

On Wed, Aug 24, 2011 at 1:04 PM, Andreas Jung li...@zopyx.com wrote:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

 The first thing is provide accurate information like information
 from tracebacks, core dump files etc.

 - -aj

 Babylakshmi Muthusamy wrote:
  Hi All,
 
  We have hosted 3 websites in a single web server with 4GB RAM. All
  the three sites were built using zope. Almost every day the sites
  are crashing with 504-proxy error. The sites are up when i restart
  the httpd and zope.  Why this happens all the time? Your help on
  fixing this issue is greatly appreciated.
 
  Thanks and regards, Babylakshmi
 
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 Charlottenstr. 37/1 | The full-service network for Zope  Plone
 D-72070 Tübingen| Produce  Publish
 www.zopyx.com   | www.produce-and-publish.com
 - 
 E-Publishing, Python, Zope  Plone development, Consulting


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Re: [Zope-dev] web sites are keep crashing

2011-08-24 Thread Andreas Jung
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Look at the event.log file (or however it is called on your
installation). In general find your 'log' folder first (sniff into
your zope.conf file to figure out the location).

- -aj

Babylakshmi Muthusamy wrote:
 Hi aj,
 
 Thanks for the immediate reply. I am a newbie for zope. I don't know 
 from where we can get those files. Could you please help me
 providing file paths?
 
 Thanks, Babylakshmi
 
 On Wed, Aug 24, 2011 at 1:04 PM, Andreas Jung li...@zopyx.com 
 mailto:li...@zopyx.com wrote:
 
 The first thing is provide accurate information like information from
 tracebacks, core dump files etc.
 
 -aj
 
 Babylakshmi Muthusamy wrote:
 Hi All,
 
 We have hosted 3 websites in a single web server with 4GB RAM. All 
 the three sites were built using zope. Almost every day the sites 
 are crashing with 504-proxy error. The sites are up when i restart 
 the httpd and zope.  Why this happens all the time? Your help on 
 fixing this issue is greatly appreciated.
 
 Thanks and regards, Babylakshmi
 
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