[Resolved] Modx Creating Core Dumps

41 Posts

Deep Reply #1, 20 years ago

Hi,
My current modx installation located here: http://www.svsworldwide.com is creating core dumps and filling up the space. I have cuple of more modx installations on the same server but none of them are creating this kind of issue.

The dumps are from 0kb to 175MB, it happens in the root directory of the site. After testing i got to know that it happens when we login to the manager. (It might be happening in other random situations too but it happened thrice after logging into manager)

The dum contains junk values, one of the dump had following values in it...

?ff`fhfPf?defsvsworld_maindbscmodx_site_contentididdefsvsworld_maindbscmodx_site_contenttypetypedefsvsworld_maindbscmodx_site_contentcontentTypecontentTypedefsvsworld_maindbscmodx_site_contentpagetitlepagetitledefsvsworld_maindbscmodx_site_contentlongtitlelongtitledefsvsworld_maindbscmodx_site_contentdescriptiondescriptiondefsvsworld_maindbscmodx_site_contentaliasaliasdefsvsworld_maindbscmodx_site_contentpublishedpublisheddefsvsworld_maindbscmodx_site_contentpub_datepub_datedefsvsworld_maindbscmodx_site_contentunpub_dateunpub_datedefsvsworld_maindbscmodx_site_contentparentparentdefsvsworld_maindbscmodx_site_contentisfolderisfolderdefsvsworld_maindbscmodx_site_contentintrotextintrotextdefsvsworld_maindbscmodx_site_contentcontentcontentdefsvsworld_maindbscmodx_site_contentrichtextrichtextdefsvsworld_maindbscmodx_site_contenttemplatetemplatedefsvsworld_maindb

Can anyone tell me how do i trace and fix this issue?

Server is running PHP 4.4.3 with apache 1.3.37 and register_globals set as off

Below is the list of Snippets installed:

ContactForm - Simple, configurable XHTML-validating contact form for delivery to email accounts.
DateTime - Outputs the current date and time to the page.
DropMenu - Robust and configurable XHTML-validating menu and site map builder. Output an unordered list.
FlexSearchForm - Robust site search with like and partial matching.
FormProcessor - Form Processor Version 2
GetStats - Fetches the visitor statistics totals from the database
MemberCheck - Selectively show chunks based on logged in Web User’ group memberships.
NewsFeed - Enable RSS2 news feed from your website.
NewsListing - Updated: Versatile news/article display system.
NewsPublisher - Updated: Publish news articles directly from the web.
PageTrail - Outputs the page trail, based on Bill Wilson’s script
Personalize - Basic personalization for web users.
PoweredBy - A little link to MODx
UserComments - Updated: Add user comments to any document.
Wayfinder - Way Finder
WebChangePwd - Web User Change Password Snippet
WebLogin - Updated: Web User Login Snippet
WebSignup - Web User Signup Snippet

and I am running version 0.9.2 of cms

Thanks
Deep

Edit: Okay, I have traced out a bit... when we login to the manager, it generates following errors in the manager...

[Wed Oct 25 04:23:18 2006] [error] [client xx.xx.xx.xx] Premature end of script headers: /users/svsworld/public_html/index.php
[Wed Oct 25 04:23:14 2006] [error] [client xx.xx.xx.xx] Premature end of script headers: /users/svsworld/public_html/index.php

Deep Ganatra
Web1 Solutions

MODX Staff
12,272 Posts

Ryan Thrash Reply #2, 20 years ago

0.9.2 or 0.9.2.1? Are you using the built in stats? If so disable them and truncate their tables in the manager using the Backup Admin tool and clicking on the log files where the numbers are underlined. Keep in mind you’ll loose your historical stats, but gain back most likely a working install.

Or you could upgrade to the public beta 5 and gain a heck of a lot of features and bugfixes.

Ryan Thrash, MODX Co-Founder
Follow me on Twitter at @rthrash or catch my occasional unofficial thoughts at thrash.me

41 Posts

Deep Reply #3, 20 years ago

Hi,
I am using 0.9.2.1 i.e. latest stable build which is available for download. I just disabled the stats from configuration (log visits = no) but it did not help.

Do you think upgrading to 0.9.5 beta would help? and is it advisable for live sites?

Thanks
Deep

Deep Ganatra
Web1 Solutions

MODX Staff
12,272 Posts

Ryan Thrash Reply #4, 20 years ago

If you’re getting core dumps, I don’t see how it could hurt.

There are probably over a hundred bug fixes in 095 that might resolve the bad behavior. Right now the only things holding up release are a few minor bugs (the "main one" involving the upgrade to TinyMCE from previous installs with TinyMCE ... just delete Tiny first and it works great), language translations and minor styling/usability issues with the manager.

Did you truncate the visitor log tables?

Backup first and be prepared to re-install your database from your backup .sql file and your site from your files archive in case it’s something really crazy.

Ryan Thrash, MODX Co-Founder
Follow me on Twitter at @rthrash or catch my occasional unofficial thoughts at thrash.me

41 Posts

Deep Reply #5, 20 years ago

Hi,
Core dumps are hurting because it is filling the web space and because of this client’s emails are getting bounced. Whenever I access admin panel, it creates 2 dump files, one has the code pasted above and other one contains some jumbled code related to kernel and other stuff.

About truncating log tables, Yes, i had done it too.

I will update it to beta version and I hope it fixes my problem.

I will update the thread once I am done.

Thanks,
Deep

Deep Ganatra
Web1 Solutions

41 Posts

Deep Reply #6, 20 years ago

Hi,
I updated it to the beta version beta5-rev1785 but the problem still remains. The only difference is, now it is creating core dumps of file size around 53 MB (earlier it was around 116 - 176 MB)

Deep

Deep Ganatra
Web1 Solutions

41 Posts

Deep Reply #7, 20 years ago

I found one strange thing...

Check this mysql table details:

Table: modx_event_log
Records: 152,182
Type: MyISAM
Collation: latin1_swedish_ci
Size: 248.5 MB

It starts creating dumps once this events table is filled up...

Deep

Edit: Okay, some more clue....

When I checked one of the records of that table, this is what I found in the description:

              <html><head><title>MODx Content Manager  » </title>
              <style>TD, BODY { font-size: 11px; font-family:verdana; }</style>
              <script type='text/javascript'>
              function copyToClip()
              {
                holdtext.innerText = sqlHolder.innerText;
                Copied = holdtext.createTextRange();
                Copied.execCommand('Copy');
              }
            </script>
              </head><body>
              <h3 style='color:red'>« MODx Parse Error »</h3>
                    <table border='0' cellpadding='1' cellspacing='0'>
                    <tr><td colspan='3'>MODx encountered the following error while attempting to parse the requested resource:</td></tr>
                    <tr><td colspan='3'><b style='color:red;'>« Too many forward attempts. »</b></td></tr><tr><td colspan='3'><b style='color:#999;font-size: 9px;'>      SQL: <span id='sqlHolder'>The request could not be completed due to too many unsuccessful forward attempts.</span></b>
                    <br />      <a href='javascript:copyToClip();' style='color:#821517;font-size: 9px; text-decoration: none'>[Copy SQL to ClipBoard]</a><textarea id='holdtext' style='display:none;'></textarea></td></tr><tr><td> </td></tr><tr><td colspan='3'><b>Parser timing</b></td></tr><tr><td>  MySQL: </td><td><i>[^qt^]</i></td><td>(<i>[^q^] Requests</i>)</td></tr><tr><td>  PHP: </td><td><i>[^p^]</i></td><td> </td></tr><tr><td>  Total: </td><td><i>[^t^]</i></td><td> </td></tr></table></body></html>

Deep Ganatra
Web1 Solutions

MODX Staff
12,272 Posts

Ryan Thrash Reply #8, 20 years ago

trunc that table... that’s insane... in fact, clear out your manager event log.

Ryan Thrash, MODX Co-Founder
Follow me on Twitter at @rthrash or catch my occasional unofficial thoughts at thrash.me

41 Posts

Deep Reply #9, 20 years ago

I did that and again its filling up, check the edited reply i have posted. I have put the content of the record too...

It’s crazy, it is showing errors every other seconds and that too in buch of 100s.. check the screenshot, this was taken approx. 10 seconds after i cleared the event_log table

Deep Ganatra
Web1 Solutions

MODX Staff
12,272 Posts

Ryan Thrash Reply #10, 20 years ago

You might have a snippet going horribly awry. I have no idea which one, but I’d start disabling them one-by-one to figure it out.

Ryan Thrash, MODX Co-Founder
Follow me on Twitter at @rthrash or catch my occasional unofficial thoughts at thrash.me