Perl + mod_perl
2015/07/30
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Install mod_perl to make Perl scripts be fast.
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| [1] | Install mod_perl. |
# install from EPEL
[root@www ~]#
yum --enablerepo=epel -y install mod_perl
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| [2] | Configure PerlRun mode which always put Perl interpreter on RAM. |
[root@www ~]#
vi /etc/httpd/conf.d/perl.conf
# line 15: uncomment ( check codes and output warnings to logs )
PerlSwitches -w
# line 24: uncomment
PerlSwitches -T
# line 30-36: uncomment like follows
Alias /perl /var/www/perl <Directory /var/www/perl>
# the directory for mod_perl environment
SetHandler perl-script
# processes files as perl-scripts under this directory
# AddHandler perl-script .cgi
# set specific extension if do do not want to processes all files as CGI
# PerlResponseHandler ModPerl::Registry
PerlResponseHandler ModPerl::PerlRun
# specify PerlRun mode
PerlOptions +ParseHeaders Options +ExecCGI </Directory>
# line 43-49: uncomment and add like follows
<Location /perl-status> SetHandler perl-script PerlResponseHandler Apache2::Status
Require ip 127.0.0.1 10.0.0.0/24
# add access permission
# Order deny,allow # Deny from all # Allow from .example.com </Location>
systemctl restart httpd
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| [3] | Create a test Script to make sure the settings are no ploblem. It's OK if the result like follows is displayed. |
#!/usr/bin/perl
use strict;
use warnings;
print "Content-type: text/html\n\n";
print "<html>\n<body>\n";
print "<div style=\"width:100%; font-size:40px; font-weight:bold; text-align:center;\">";
my $a = 0;
&number();
print "</div>\n</body>\n</html>";
sub number {
$a++;
print "number \$a = $a";
}
chmod 705 /var/www/perl/test-mod_perl.cgi
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| [4] | Configure Registry mode which has caches of codes on RAM. |
[root@www ~]#
vi /etc/httpd/conf.d/perl.conf
Alias /perl /var/www/perl
[root@www ~]# <Directory /var/www/perl> SetHandler perl-script PerlResponseHandler ModPerl::Registry
# uncomment
#
PerlResponseHandler ModPerl::PerlRun
# comment out
PerlOptions +ParseHeaders Options +ExecCGI </Directory>
systemctl restart httpd
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| [5] | Access to the test script which is an example of [4] section, then variable increases by reloading because variable is cached on RAM. So it's necessarry to edit the code for Registry mode. |
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[root@www ~]#
vi /var/www/perl/test-mod_perl.cgi
#!/usr/bin/perl use strict; use warnings; print "Content-type: text/html\n\n"; print "<html>\n<body>\n"; print "<div style=\"width:100%; font-size:40px; font-weight:bold; text-align:center;\">"; my $a = 0;
&number(
$a
);print "</div>\n</body>\n</html>";
sub number {
my($a) = @_;
$a++;
print "number \$a = $a";
}
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| [6] | By the way, it's possible to see the status of mod_perl to access to "http://(hostname or IP address)/perl-status". |
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