httpd-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Boyle Owen" <Owen.Bo...@swx.com>
Subject RE: [users@httpd] 500 error page not showing?
Date Tue, 17 Apr 2007 08:37:17 GMT
> -----Original Message-----
> From: Tom Haddon [mailto:tom@greenleaftech.net] 
> Sent: Tuesday, April 17, 2007 10:16 AM
> To: users@httpd.apache.org
> Subject: [users@httpd] 500 error page not showing?
> 
> Hi Folks,
> 
> I believe I have an issue with a custom 500 error page not showing. I
> can simulate the error (or rather, cause the error) by stopping my
> database server which then produces an "Operational Error" page. If I
> look in my apache access logs I see an entry like this:
> 
> 91.84.7.17 - - [16/Apr/2007:13:16:15 +0100] "GET / HTTP/1.1" 
> 500 107 "-"
> "Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.3) Gecko/20061201
> Firefox/2.0.0.3 (Ubuntu-feisty)"
> 
> >From what I can see this is showing that a 500 error is 
> being recorded.
> Interestingly I get nothing in the error log. In my apache config I
> have:
> 
> ErrorDocument 500 /500.html
> 
> But the document isn't being shown, instead just the plain 
> "Operational
> Error" page. 

How is your database server accessed by the webserver?

If it's running as an application that apache accesses directly (eg, CGI
or similar executes DB queries) then a DB error should cause the script
to fail and a "real" 500.

However, if the DB is an HTTP-aware back-end and is accessed via
mod_proxy then the 500 is generated in the DB server and is simply
passed on by apache. So it's not a 500 in apache, hence no error log. I
suspect the latter since you mention an "Operational Error" page that,
presumably, comes from the DB server.

> 
> If I shut down my app servers, I can simulate/cause an 502 error fine
> and the 502 error page I've created displays fine, and I get a message
> like this in the error log:
> 
> [Tue Apr 17 07:45:06 2007] [error] (111)Connection refused: 
> proxy: HTTP:
> attempt to connect to 127.0.0.1:9999 (localhost) failed

Sure - apache can't connect to the DB so it is apache that has to report
back to the client. Hence error logging.

> 
> Can anyone enlighten me?

Did I?

Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may be ignored. 

> 
> Thanks, Tom
> 
> -- 
> 
> 
> ----------------------------------
> Tom Haddon
> mailto:tom@greenleaftech.net
> m +1.415.871.4180
> www.greenleaftech.net
> 
> 
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP 
> Server Project.
> See <URL:http://httpd.apache.org/userslist.html> for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
>    "   from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
 
 
This message is for the named person's use only. It may contain confidential, proprietary
or legally privileged information. No confidentiality or privilege is waived or lost by any
mistransmission. If you receive this message in error, please notify the sender urgently and
then immediately delete the message and any copies of it from your system. Please also immediately
destroy any hardcopies of the message. You must not, directly or indirectly, use, disclose,
distribute, print, or copy any part of this message if you are not the intended recipient.
The sender's company reserves the right to monitor all e-mail communications through their
networks. Any views expressed in this message are those of the individual sender, except where
the message states otherwise and the sender is authorised to state them to be the views of
the sender's company.

---------------------------------------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
   "   from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org


Mime
View raw message