Recently I’ve successfully update my OSSIM machine from version 2.1.x to version 2.2.x. It took several times to finish the update process.
After restarting the machine, I found out several warning messages from Apache depicted in the following figure :
The warnings were caused by the conflict between several nagios-apache configuration files. In my case there are two configuration files (apache2.conf and nagios3.conf) soft-linked to the same configuration file :
The solution is just delete the “apache2.conf” file.