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From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: Spurious "Internal Server Errors" accessing "jkmanager" after upgrading Apache, "mod_jk" and OpenSSL
Date Wed, 28 Dec 2016 20:43:25 GMT
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Martin,

On 12/28/16 10:38 AM, Martin Knoblauch wrote:
> Hi,
> 
> today we updated our Devel/Integration environments from
> 
> HTTPD 2.4.18/mod_jk 1.2.41/OpenSSL-1.0.2h
> 
> to
> 
> HTTPD 2.4.23/mod_jk 1.2.42/OpenSSL-1.0.2j
> 
> 
> Since then we observe on both systems spurious "500" messages when 
> accessing the "jkmanager" page. Unfortunately there isn't much info
> besides that. Only "access_log" shows
> 
> access_log:xxx.xxx.xxx.xxx - xxxxxxxx [28/Dec/2016:16:29:18 +0100]
> "GET /jkmanager HTTP/1.1" 500 536
> 
> Any ideas how to get more insight

I had a problem a while back where I would get 500 responses and
*nothing* else back. It took a lot of tinkering-around to figure out
the problem: my LDAP server wasn't acceptable for some reason and
mod_auth_ldap was choking.

I spent all my time trying to figure out what was wrong with mod_jk
and it was the authentication layer way before mod_jk was being consulte
d.

If you require authorization for jkmanager (and you should!) make sure
that's working as expected before banging your head against mod_jk.

Also, make sure you are using the latest mod_jk that you can: the
distribution is separate from httpd.

- -chris
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