I have installed Netdisco, which is a perl based network discovery tool
When I run httpd from a terminal prompt as root, it works fine.
When I try and start Apache as a service (service httpd start), I get the following error(s):
Starting httpd: [Mon Apr 23 19:45:48 2012] [warn] module perl_module is already loaded, skipping
[Mon Apr 23 19:45:48 2012] [warn] module apreq_module is already loaded, skipping
Syntax error on line 22 of /etc/httpd/conf/netdisco_apache.conf:
Can't locate netdisco.pm in @INC (@INC contains: /usr/local/netdisco /usr/local/lib/perl5 /usr/local/share/perl5 /usr/lib/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib/perl5 /usr/share/perl5 . /etc/httpd) at /etc/httpd/conf/netdisco_apache.conf line 26.\nBEGIN failed--compilation aborted\t(in cleanup) Can't locate netdisco.pm in @INC (@INC contains: /usr/local/netdisco /usr/local/lib/perl5 /usr/local/share/perl5 /usr/lib/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib/perl5 /usr/share/perl5 . /etc/httpd) at /etc/httpd/conf/netdisco_apache.conf line 26.\nBEGIN failed--compilation aborted at /etc/httpd/conf/netdisco_apache.conf line 26.\n
I tried adding the apache user to the netdisco group netdisco, and got the same result.
netdisco.pm is definitely in the first folder in @INC (/usr/local/netdisco), and the netdisco user / group owns that folder and all files, including netdisco.pm
Why won't it start?
Answer
Make sure that apache user has execute access to the /usr/local/netdisco folder and read access for the /usr/local/netdisco/netdisco.pm file.
You can also strace the startup of apache to find which files is trying to access. If those files exists it is a permission problem. Besides the Unix permissions you have to check the SELinux configuration.
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