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can't start apache in centos 5.x

Posted on 2010-11-10
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Last Modified: 2012-05-10
Hi,

I can't start apache on my centos 5.x Here's the error I receive:
[root@seokingdomheaven vkimura]# /etc/init.d/httpd restart
Stopping httpd:                                            [FAILED]
Starting httpd: httpd: Syntax error on line 187 of /etc/httpd/conf/httpd.conf: Cannot load /etc/httpd/modules/mod_rewrite.so into server: /etc/httpd/modules/mod_rewrite.so: undefined symbol: ap_get_server_banner
                                                       
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Question by:Victor Kimura
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18 Comments
 
LVL 13

Expert Comment

by:darren-w-
ID: 34102676
are you sure you have super user access?
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Expert Comment

by:darren-w-
ID: 34102693
Looking at your error again, it looks like mod_rewrite.so has an error, has it been modified recently?
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Author Comment

by:Victor Kimura
ID: 34102847
No, mod_rewrite.so hasn't been modified.

I have su access. It's at root with these commands.

I think the problem lies in that when I compiled apache I didn't use the default centos install paths. It was based on a one of the recommendations of an expert here. I think that's why but how do I figure this out?
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Expert Comment

by:balasundaram_s
ID: 34103307
Did you upgrade Apache?  What version of Apache running?  
Is this first time, Apache being compiled and made run on this server?

'ap_get_server_banner" is not available until httpd version 2.2.4.


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Author Comment

by:Victor Kimura
ID: 34103399
[root@seokingdomheaven vkimura]# httpd -v
Server version: Apache/2.2.3
Server built:   Nov 12 2009 18:43:41

This is where httpd is located:
[root@seokingdomheaven vkimura]# which httpd
/usr/sbin/httpd
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Expert Comment

by:balasundaram_s
ID: 34103439
Is it possible to upgrade to 2.2.4?  
I dont have any other option to resolve this issue, except upgrade.
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Author Comment

by:Victor Kimura
ID: 34103512
Do you know if /usr/sbin/httpd is the default location?

How do I upgrade to 2.2.4? What are the commands? Sorry, newbie questions but I don't use my centos often. I forget the commands.
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Expert Comment

by:darren-w-
ID: 34104001
yum update mysql-server
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Author Comment

by:Victor Kimura
ID: 34104641
httpd restart is still failing. Any ideas?
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Author Comment

by:Victor Kimura
ID: 34104648
How can I upgrade from 2.2.3. to 2.2.4? I don't know if that will resolve the problem though.
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Assisted Solution

by:balasundaram_s
balasundaram_s earned 1000 total points
ID: 34104885
Look at the section "Upgrading of Apache 2.2.3 to Apache 2.2.4"  in the below link:

http://www.freelinuxtutorials.com/tutorials/centos-lamp-installation/

or You may download the source and compile it.
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Author Comment

by:Victor Kimura
ID: 34109685
I can't find:
3.    Download httpd-2.2.4-4.x86_64.rpm from http://rpmfind.net/
4.    Download httpd-devel-2.2.4-4.x86_64.rpm from http://rpmfind.net/
5.    Download lib64db4.5-4.5.20-1mdv2007.1.x86_64.rpm http://rpmfind.net/
6.    Install lib64db4.5-4.5.20-1mdv2007.1.x86_64.rpm

on
http://rpmfind.net/linux/rpm2html/search.php?query=apache&submit=Search+...&system=&arch=

I tried searching by 'apache' and 'httpd' but I can't find them. I tried even searching for them via google but still no luck. I'd like to try and avoid compiling for time's sake. Aren't there dependencies that I may miss if I compile from source?

If you have a direct page that would so helpful to me. =)
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Expert Comment

by:darren-w-
ID: 34109830
Hi,

Can I assume that you have tried running "sudo yum update mysql-server" on the command line? In order to get the system to automatically upgrade the apache?

Darren
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Author Comment

by:Victor Kimura
ID: 34110145
Hi darren-w,

I tried that. I still can't restart httpd.
[root@seokingdomheaven vkimura]# /etc/init.d/httpd restart
Stopping httpd:                                            [FAILED]
Starting httpd: httpd: Syntax error on line 187 of /etc/httpd/conf/httpd.conf: Cannot load /etc/httpd/modules/mod_rewrite.so into server: /etc/httpd/modules/mod_rewrite.so: undefined symbol: ap_get_server_banner
                                                           [FAILED]
[root@seokingdomheaven vkimura]#

That didn't update apache:
[root@seokingdomheaven vkimura]# httpd -v
Server version: Apache/2.2.3
Server built:   Nov 12 2009 18:43:41

Do you know where I can find the latest rpm for httpd?
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Expert Comment

by:SimonDard
ID: 34111446
To summarize, you downloaded the source code of Apache, compiled it, installed it and now (re)starting Apache ends prematurely in an error stating there's something wrong with mod_rewrite.so

Apparently, the newer compiled Apache is trying to load a version of mod_rewrite.so which is incompatible with it. I can think of 2 causes:
1. During compiling mod_rewrite was not built and therefore not replaced. Soluation: when configuring Apache before compiling (./configure before make), you need to add the right flag for adding mod_rewrite (and any other mod for that mather).
2. mod_rewrite was built, but got placed in another location. Solution: use (s)locate to scan your drive(s) for mod_rewrite and replace the failing mod_rewrite with the newer one.

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Assisted Solution

by:darren-w-
darren-w- earned 1000 total points
ID: 34111487
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Accepted Solution

by:
Victor Kimura earned 0 total points
ID: 34111911
I have this:
[vkimura@seokingdomheaven ~]$ locate httpd.conf
/etc/httpd/conf/httpd.conf
/etc/httpd/conf/httpd.conf.save
/etc/httpd/conf/original/httpd.conf
/etc/sysconfig/ha/conf/httpd.conf
/home/vkimura/.kde/share/apps/RecentDocuments/httpd.conf.desktop
/home/vkimura/httpd-2.2.14/docs/conf/httpd.conf
/home/vkimura/httpd-2.2.14/docs/conf/httpd.conf.in
/usr/local/apache/conf/.httpd.conf.swp
/usr/local/apache/conf/httpd.conf
/usr/local/apache/conf/httpd.conf.bak
/usr/local/apache/conf/httpd.conf.txt
/usr/local/apache/conf/original/httpd.conf
/usr/share/system-config-httpd/httpd.conf.xsl

The one I compiled is located here:
/usr/local/apache/conf/httpd.conf

so I found out that for me to start it I had to run this:
/usr/local/apache/bin/httpd -k start



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Author Closing Comment

by:Victor Kimura
ID: 34143337
Thank you all for your help.
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