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Posted to bugs@httpd.apache.org by bu...@apache.org on 2012/11/28 23:40:42 UTC
[Bug 54221] New: Not getting full information for certain lines in
the error log
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
Bug ID: 54221
Summary: Not getting full information for certain lines in the
error log
Product: Apache httpd-2
Version: 2.4.3
Hardware: Sun
OS: Solaris
Status: NEW
Severity: normal
Priority: P2
Component: mod_log_config
Assignee: bugs@httpd.apache.org
Reporter: mark.tischler@alcatel-lucent.com
Classification: Unclassified
Created attachment 29647
--> https://issues.apache.org/bugzilla/attachment.cgi?id=29647&action=edit
error log snippet from before the upgrade
Was running Apache 2.2.15 up until mid-October. Then upgraded to Apache 2.4.3.
There are statements that are coming out in the error log rather routinely, so
they were coming out before the upgrade, and they are coming out since the
upgrade. These are generated by some web application running a shell script on
our web server. The problem is that these lines lack full information in the
new Apache version, which makes debugging hard. I have been searching the
internet on and off for the past several weeks trying to figure out what might
be wrong, but have had no success. So, unfortunately, I'm having to resort to
this method of solving my problem. I have attached a file snippet from our
error log *prior* to the upgrade, a file snippet from our error log *after* to
the upgrade, as well as our httpd.conf. In the case of the two file snippets,
you will see that the information associated with the middle 4 lines is
severely lacking in the one from *after* our upgrade. Can you identify if
there's a problem in our configuration, or if there is something wrong with
Apache?
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #19 from Eric Covener <co...@gmail.com> ---
I have no idea, you'll have to wait for a volunteer to look further. Are you
sure your PHP runs as CGI?
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
Mark Tischler <ma...@alcatel-lucent.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|INVALID |---
--- Comment #25 from Mark Tischler <ma...@alcatel-lucent.com> ---
I'm not sure what else someone would need. I provided the httpd.conf files
from 2.2.15 and 2.4.3, and I provided an actual example on my posting of
2013-01-29 19:01:26 UTC.
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #21 from Eric Covener <co...@gmail.com> ---
> When you say that I would have to wait for another volunteer to see and grab
> this ticket, it's been 2 weeks since I posted that even using mod_cgi didn't
> help. So, what time period would I expect to have to wait until someone
> else jumps in? How does someone know that you are "detaching" from this
> ticket? Perhaps every other volunteer figures that you are still handling
> it, and, thus, they do not need to jump in.
Bugzilla isn't for support, It's for reporting bugs.
It's still unclear what component writes to your error log differently after
your upgrade and reconfguration, but no matter what it is originators are
expected to do their homework in the report.
Anyone who takes interest is always free to comment. Again, I think you
might get some guidance on the users list which has more eyes.
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #5 from Mark Tischler <ma...@alcatel-lucent.com> ---
I made the change from mod_cgi to mod_cgid simultaneous with the move from
2.2.15 to 2.4.3, so I don't know what caused it. As I noted in the httpd.conf,
I had to make that change to get things to work. Should I have done something
different?
I do not know what MPM is, so I guess I don't know if changed it. I will
attach my old httpd.conf -- the one from 2.2.15. Perhaps that answers this
question.
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #7 from Mark Tischler <ma...@alcatel-lucent.com> ---
Eric,
You were so good about responding quickly the first time. Any thoughts on what
the problem might be?
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #20 from Mark Tischler <ma...@alcatel-lucent.com> ---
The .php script I included above is run as a web page under that newly-built
web server, so it should be running as a built-in, not CGI, because I build PHP
with Apache. At least, that's the way I was understanding it. Besides the
.conf file, which I attached to the ticket, I could include the instructions I
used to build the product, if you think that would help.
When you say that I would have to wait for another volunteer to see and grab
this ticket, it's been 2 weeks since I posted that even using mod_cgi didn't
help. So, what time period would I expect to have to wait until someone else
jumps in? How does someone know that you are "detaching" from this ticket?
Perhaps every other volunteer figures that you are still handling it, and,
thus, they do not need to jump in.
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #22 from Mark Tischler <ma...@alcatel-lucent.com> ---
The problem is that this appears to me to be a bug. I think I have followed
the instructions to build a web server properly, but, as yet, there's been no
explanation as to why it doesn't work the way it used to work. Once there's a
plausible explanation (and I thought it was that I was supposed to use mod_cgi
instead of mod_cgid) as to why it's not working, then, to me, it would make
sense to go to the user list.
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #14 from Eric Covener <co...@gmail.com> ---
(In reply to comment #13)
> Then I'm confused. What would I have inadvertently changed so that I'm not
> using prefork MPM in Apache 2.4 vs. (apparently I was) in Apache 2.2? Is
> there something in the httpd.conf files for 2.2 and 2.4 that leads to that
> answer?
It's a build time decision in 2.2. In 2.4, you can build multiple MPM's and
choose whichever you like at runtime by LoadModule on exactly one.
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #11 from Mark Tischler <ma...@alcatel-lucent.com> ---
So, are you confirming that I can no longer use the mod_cgi module with Apache
2.4.3? And, if so, are you saying that there is no way to get the prefixes
back?
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #18 from Mark Tischler <ma...@alcatel-lucent.com> ---
Eric, I need advice from you. This is not something I can go to the forums
with, because I need insider knowledge of what's causing this issue. You had
one theory, but, either there's something additional at play, or there is
something completely different causing this. Please respond with your insight.
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #23 from Mark Tischler <ma...@alcatel-lucent.com> ---
No one has responded to this ticket in a very long time. If, indeed, Eric, you
were waiting for someone else to jump in and take it (as you indicated on
February 11), it appears that nothing is triggering anyone else to look at
this. Is there a way to trigger someone else to look at this in a timely
fashion?
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
Eric Covener <co...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO
Summary|Not getting full |no ErrorLog prefix on CGI
|information for certain |errors
|lines in the error log |
--- Comment #4 from Eric Covener <co...@gmail.com> ---
LoadModule info_module modules/mod_info.so
# mdt - 2012-09-14 - comment out because this module is not built by
default as of Apache 2.4.2
#LoadModule cgi_module modules/mod_cgi.so
# mdt - 2012-09-14 - add this module to take the place of mod_cgi as of
Apache 2.4.2
LoadModule cgid_module modules/mod_cgid.so
Did your logging difference happen during the change from mod_cgi to mod_cgid?
Did you change your MPM as well?
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #12 from Eric Covener <co...@gmail.com> ---
There's no new restrictions on mod_cgi in 2.4. Just like in 2.2, you can only
use it with the prefork MPM, not worker or event.
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
Mark Tischler <ma...@alcatel-lucent.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |NEW
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
Mark Tischler <ma...@alcatel-lucent.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|WONTFIX |---
--- Comment #17 from Mark Tischler <ma...@alcatel-lucent.com> ---
OK. So, I rebuilt the web server, this time with the '--enable-cgi' flag in
the config for both building Apache as well as PHP. I loaded the mod_cgi
module instead of the mod_cgid module, ran the following script, and still got
the problem:
<?php
print "Content-type: text/html\n\nhi\n";
$STDERR = fopen('php://stderr', 'w+');
fwrite($STDERR, "Error: cannot execute query\n");
?>
Running this as a URL, yields simply:
Error: cannot execute query
instead of something like:
[Tue Jan 29 12:51:44.330891 2013] [:note] [pid 19732:tid 5] [client
135.185.197.151:3798] Error: cannot execute query
You had said that it was because I was now using mod_cgid, instead of mod_cgi.
Given that I am now using mod_cgi and I still have this problem, what's the
next step?
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #15 from Mark Tischler <ma...@alcatel-lucent.com> ---
OK. So, I'm looking for some advice on how to configure the httpd.conf for
2.4.3, so that I get the correct module(s). As I said, when I tried to load
mog_cgi, it complained. It sounds (from what you're saying) that I simply need
to adjust the httpd.conf to load some new or different modules.
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #16 from Eric Covener <co...@gmail.com> ---
http://httpd.apache.org/userslist.html
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #13 from Mark Tischler <ma...@alcatel-lucent.com> ---
Then I'm confused. What would I have inadvertently changed so that I'm not
using prefork MPM in Apache 2.4 vs. (apparently I was) in Apache 2.2? Is there
something in the httpd.conf files for 2.2 and 2.4 that leads to that answer?
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #9 from Mark Tischler <ma...@alcatel-lucent.com> ---
So, are you saying that I need to load mod_cgi instead of mod_cgid? If so, as
I recall (it's been several months, though), when I tried loading mod_cgi, it
told me that this module was obsolete (you actually captured this implication
in your Nov. 29th response). So, how do you suggest I get mod_cgi to work? At
the time, my only recourse seemed to be to *not* load mod_cgi, but to instead
load mod_cgid.
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[Bug 54221] Not getting full information for certain lines in the
error log
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #2 from Mark Tischler <ma...@alcatel-lucent.com> ---
Created attachment 29649
--> https://issues.apache.org/bugzilla/attachment.cgi?id=29649&action=edit
config file
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
Eric Covener <co...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |WONTFIX
--- Comment #8 from Eric Covener <co...@gmail.com> ---
The prefix is a difference between mod_cgi and mod_cgid.
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #10 from Eric Covener <co...@gmail.com> ---
I'm only saying it's the explanation of the different behavior when you changed
from one CGI module to the other, which had been misinterpreted as something
that changed just due to the update.
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[Bug 54221] Not getting full information for certain lines in the
error log
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #1 from Mark Tischler <ma...@alcatel-lucent.com> ---
Created attachment 29648
--> https://issues.apache.org/bugzilla/attachment.cgi?id=29648&action=edit
error log snippet from after the upgrade
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
Eric Covener <co...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |INVALID
--- Comment #24 from Eric Covener <co...@gmail.com> ---
(In reply to comment #23)
> No one has responded to this ticket in a very long time. If, indeed, Eric,
> you were waiting for someone else to jump in and take it (as you indicated
> on February 11), it appears that nothing is triggering anyone else to look
> at this. Is there a way to trigger someone else to look at this in a timely
> fashion?
I'm not waiting for anything. We're all volunteers motivated by different
things without any implied level of service. As an originator, the best you
can do is provide your own detail and analysis to not reduce the overhead of
whoever looks at the bug report.
On 2.4, I can switch between mod_cgid and mod_cgi and run a CGI that does:
echo "XXX CGI TEST" >&2
And with mod_cgi, it shows up with the erorrlog prefix, and with mod_cgid it
shows up without it.
I confirmed on 2.2, mod_cgid behaves the same as it does in 2.4. I didn't
bother testing mod_cgi in 2.2.
I didn't go back to 2.2.15, just 2.2.latest. You'll need a more concrete
reproducible report to minimize the effort of anyone trying to find the bug
here.
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[Bug 54221] Not getting full information for certain lines in the
error log
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #3 from Mark Tischler <ma...@alcatel-lucent.com> ---
Note that I'm just giving one example of this. There are many more lines that
come out in the error log without any additional information. I haven't been
able to establish a pattern of what gets printed with additional information
and what does not.
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[Bug 54221] no ErrorLog prefix on CGI errors
Posted by bu...@apache.org.
https://issues.apache.org/bugzilla/show_bug.cgi?id=54221
--- Comment #6 from Mark Tischler <ma...@alcatel-lucent.com> ---
Created attachment 29657
--> https://issues.apache.org/bugzilla/attachment.cgi?id=29657&action=edit
old config file
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