[Catalyst] Apache2 and mod_perl deployment issue

[Peter Edwards]

Hi if you run the Apache server in single threaded mode with the -X flag
you should be able to strace it or gdb it.
Regards, Peter
On Nov 14, 2011 7:34 PM, "Adam Jimerson" <vendion at gmail.com> wrote:

> On Mon, Nov 14, 2011 at 4:21 AM, Tomas Doran <bobtfish at bobtfish.net>wrote:
>
>>
>> On 14 Nov 2011, at 02:55, Adam Jimerson wrote:
>>
>>  I am trying to deploy my app using the Catalyst Runtime 5.90006 using
>>> mod_perl  2.0.5 on apache 2.2.17.  I have all my configurations in a
>>> virtual host file, can be found here http://cloud.vendion.net/apps/**
>>> files_sharing/get.php?token=3D**9e6836a8d9e633e2c81390d73423be**b92df48=
9aa<http://cloud.vendion.net/apps/files_sharing/get.php?token=3D9e6836a8d9e=
633e2c81390d73423beb92df489aa>
>>> .
>>>
>>> My app runs fine under the development server script that ships with
>>> catalyst, but when I try to start Apache with this virtual host file it
>>> crashes Apache.  If I enable -Debug in my Catalyst app
>>> I can see where the app is being loaded with Apache and that mod_perl is
>>> working
>>>
>>
>> You mean it is loading, not that it's working :)
>>
>>
> Yea that is what I mean, and to answer an earlier question yes I do have a
> LoadModule directive for mod_perl
>
>
>>
>>  , and that the virtual host file passed the Syntax check.  The only clue
>>> that can find in my servers logs is:
>>>
>>> httpd2-prefork[21582]: segfault at 7f1cac9f84c0 ip 00007f1cac9f84c0 sp
>>> 00007fffd98d11d8 error 14 in librt-2.11.3.so[7f1cae229000+**8000]
>>>
>>
>> Hmm, that's not particularly nice.. But it's not crashing inside perl -
>> so I'd guess this is an issue with your apache and/or mod_perl, rather t=
han
>> with the perl code itself.
>>
>>
>>
> That was my first thought as well, but not getting help from my Distros
> support forums as far as server/module falls
>
>
>>  Running Apache under gdb with debug symbols for apache and mod_perl
>>> installed there is no stack trace generated but the only error I see is
>>> this:
>>>
>>
>> This would be as apache forks, and the gdb doesn't follow that..
>>
>>
> Would strace be able to follow the fork, or would I be in the same boat
> there?  The only thing that I can see that would be causing it is a couple
> of lines like this:
>
> rt_sigprocmask(SIG_BLOCK, [INT CHLD], [CHLD], 8) =3D 0
> clone(child_stack=3D0,
> flags=3DCLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD,
> child_tidptr=3D0x7f6cc00c69d0) =3D 23938
> rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) =3D 0
> close(3)                                =3D 0
> rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD], 8) =3D 0
> rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) =3D 0
> rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD], 8) =3D 0
> rt_sigaction(SIGINT, {0x439950, [], SA_RESTORER|SA_RESTART,
> 0x7f6cbf4b9e10}, {SIG_DFL, [], SA_RESTORER|SA_RESTART, 0x7f6cbf4b9e10}, 8)
> =3D 0
> wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) =3D=3D 0}], 0, NULL) =3D 23937
> wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) =3D=3D 1}], 0, NULL) =3D 23938
> rt_sigaction(SIGINT, {SIG_DFL, [], SA_RESTORER|SA_RESTART,
> 0x7f6cbf4b9e10}, {0x439950, [], SA_RESTORER|SA_RESTART, 0x7f6cbf4b9e10}, =
8)
> =3D 0
> rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) =3D 0
> close(3)                                =3D -1 EBADF (Bad file descriptor)
>
>
>>
>>  Syntax error on line 7 of /etc/apache2/vhosts.d/www.**vendion.net.conf:
>>> Invalid command 'PerlSwitches', perhaps misspelled or defined by a
>>> module not included in the server configuration
>>>
>>
>> How much of the config can you remove (and still get the segfault?)
>>
>> Does it only take the PerlSwitches line and/or the <Perl> block (if so
>> it's _definitely_ an issue with your mod_perl/Apache, as with the
>> 'PerlModule' statement removed, no code except mod_perl is actually being
>> loaded.
>>
>>
> Without the <Perl> block I get this error when trying to start Apache2:
>
> startproc:  exit status of parent of /usr/sbin/httpd2-prefork: 1
>
> Without the PerlSwitches line that is what causes it to segfault.
>
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