[LON-CAPA-users] problem starting apache with lon-capa

Stuart Raeburn raeburn at msu.edu
Sun Nov 3 12:12:19 EST 2013


> [Sun Nov 03 12:28:01 2013] [error] Can't locate HTML/LCParser.pm

That error is usually seen when SELinux is enabled.

I see that the Scientific Linux 6 distro updates for today (Nov. 3  
2013) include new versions for:


So, possibly you ran:

yum update

and the existing /etc/selinux/config file was overwritten, such that  
selinux is no longer disabled.

If this is the case you should be able to use the command "setup" to  
set SELinux to Disabled.  You'll then need to reboot.

Otherwise you could use a test editor to modify /etc/selinux/config so  
it contains the line:


(Note: this type of question is more appropriate for the  
lon-capa-admin list, which is intended for discussion about system  
administration and updating -- see:  


Stuart Raeburn
LON-CAPA Academic Consortium

Quoting Andrew Irwin <airwin at mta.ca>:

> I have been using the latest release of lon-capa (2.10) for most of   
> a year on a ScientificLinux OS. This morning we had a problem with   
> apache not starting due to errors executing /etc/httpd/conf/startup.pl
> In particular, I get an error loading the perl module LCParser.pm   
> when I attempt to start apache with /etc/init.d/httpd start as root:
> [Sun Nov 03 12:28:01 2013] [error] Can't locate HTML/LCParser.pm in   
> @INC (@INC contains: /usr/lib/perl5/site_perl/5.6.0/i386-linux/   
> /home/httpd/lib/perl /usr/local/lib64/perl5 /usr/local/share/perl5   
> /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl   
> /usr/lib64/perl5 /usr/share/perl5 . /etc/httpd) at   
> /etc/httpd/conf/startup.pl line 22.\nBEGIN failed--compilation   
> aborted at /etc/httpd/conf/startup.pl line 22.\nCompilation failed   
> in require at (eval 2) line 1.\n
> [Sun Nov 03 12:28:01 2013] [error] Can't load Perl file:   
> conf/startup.pl for server lon-capa.mta.ca:0, exiting...
> If I change the line "use HTML::LCParser" to "require   
> /home/httpd/lib/perl/HTML/LCParser.pm" I can get past this line, but  
>  then another module has an error.
> This is puzzling since "/home/httpd/lib/perl" is in the use path @INC
> Any suggestions would be most welcome.
> Andrew
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