I ran into an issue when installing TWiki on a Red Hat Enterprise Linux 4 server. I had installed TWiki to /home/twiki, and its scripts directory to /var/www/cgi-bin/twiki/bin. I set up paths appropriately in all config files, Apache config, etc, but still got an error at the end of the initial configure run:

Unable to write to file /home/twiki/lib/LocalSite.cfg

On a suggestion from the folks in IRC, I checked for SELinux on the system:

$ /usr/sbin/selinuxenabled

Which returned nothing, telling me that SELinux was enabled.

I then ran

$ /usr/sbin/setenforce 0

to disable SELinux enforcement until next reboot of the system. This allowed configure to access the files outside the /var/www directory tree, and the configuration completed successfully.

Of course, this is not a permanent solution, a better one might be to disable SELinux entirely (if security is not an issue) or configure access controls properly for the /home/twiki directory. Look at http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/selinux-guide/rhlcommon-section-0068.html for a lot of information on SELinux on RHEL.

-- Contributors: MaxLemieux

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