I try to install Phusion Passenger on my CentOS 6. After follow installation instruction from https://www.phusionpassenger.com/library/install/apache/install/oss/el6/
The last step is to restart Apache and I got..
$ sudo service httpd restart
Stopping httpd: [FAILED]
Starting httpd: httpd: Syntax error on line 229 of /etc/httpd/conf/httpd.conf: Cannot load /usr/local/rvm/gems/ruby-2.2.2/gems/passenger-5.1.1/buildout/apache2/mod_passenger.so into server: /usr/local/rvm/gems/ruby-2.2.2/gems/passenger-5.1.1/buildout/apache2/mod_passenger.so: undefined symbol: ap_log_error_
[FAILED]
I verified and found that the mod_passenger.so is at the directory in the error message is exist. Then I try to validate with following command and got something like this..
Final autodetection results
* Found Apache 2.2.15!
Information:
apxs2 : /usr/bin/apxs
Main executable: /usr/sbin/httpd
Control command: /usr/sbin/apachectl
Config file : /etc/httpd/conf/httpd.conf
Error log file : unknown
To install Phusion Passenger against this specific Apache version:
/usr/local/rvm/gems/ruby-2.2.2/wrappers/ruby /usr/local/rvm/gems/ruby-2.2.2/gems/passenger-5.1.1/bin/passenger-install-apache2-module --apxs2-path='/usr/bin/apxs'
To start, stop or restart this specific Apache version:
/usr/sbin/apachectl start
/usr/sbin/apachectl stop
/usr/sbin/apachectl restart
* Found Apache 2.2.15!
Information:
apxs2 : /usr/sbin/apxs
Main executable: /usr/sbin/httpd
Control command: /usr/sbin/apachectl
Config file : /etc/httpd/conf/httpd.conf
Error log file : unknown
To install Phusion Passenger against this specific Apache version:
/usr/local/rvm/gems/ruby-2.2.2/wrappers/ruby /usr/local/rvm/gems/ruby-2.2.2/gems/passenger-5.1.1/bin/passenger-install-apache2-module --apxs2-path='/usr/sbin/apxs'
To start, stop or restart this specific Apache version:
/usr/sbin/apachectl start
/usr/sbin/apachectl stop
/usr/sbin/apachectl restart
WARNING: You have multiple Apache installations on your system!
You are strongly recommended to read this section of the documentation:
https://www.phusionpassenger.com/install/apache/multiple_apache_installs.html
According to the information in the suggested link, it seem that I have problem about multiple version of Apache that I probably should force build by running command "passenger-install-apache2-module" and specify APXS2 location.
But the message above it show that there are duplicated version of Apache 2.2.15.
Any suggestion on what should I do to figure out on this, please ?
UPDATE I ended up by uninstall both Apache and Phusion Passenger and then re-install them back again. Now it is running fine.
