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How to install mod_ruby and eruby on Linux server ?

April 8th, 2009 5 comments

What is mod_ruby?

mod_ruby embeds the Ruby interpreter into the Apache web server, allowing Ruby CGI scripts to be executed natively. These scripts will start up much faster than without mod_ruby.


1) Install eRuby

# wget http://www.modruby.net/archive/eruby-1.0.5.tar.gz


# tar -xzvf eruby-1.0.5.tar.gz


# cd eruby-1.0.5/


# ./configure.rb –with-charset=euc-jp –enable-shared


# make; make install

2) Install mod_ruby

i)Download latest mod_ruby tar file


# wget http://www.modruby.net/archive/mod_ruby-1.2.6.tar.gz


# tar -xzvf mod_ruby-1.2.6.tar.gz


# cd mod_ruby-1.2.6/


#  ./configure.rb –enable-eruby –with-apxs=/usr/local/apache/bin/apxs


# make; make install

ii)Edit apache configuration file ( httd.conf) and add following code

LoadModule ruby_module libexec/mod_ruby.so
ClearModuleList
AddModule mod_ruby.c
AddHandler cgi-script .rb
<IfModule mod_mime.c>

# for Ruby/eRuby
<IfModule mod_ruby.c>
# for Apache::RubyRun
RubyRequire apache/ruby-run
# for Apache::ERubyRun
RubyRequire apache/eruby-run
# for development
# RubyRequire auto-reload
# for add library
#RubyAddPath /usr/local/lib/ruby
# exec *.rbx as ruby scripts.
<Files *.rbx>
SetHandler ruby-object
RubyHandler Apache::RubyRun.instance
</Files>
# handle *.rhtml as eruby files.
<Files *.rhtml>
SetHandler ruby-object
RubyHandler Apache::ERubyRun.instance
</Files>
</IfModule>
</IfModule>

iii) Restart apache service on server


Regards

Alex P

Categories: Cpanel Server, Dedicated Server Tags: ,

Fixing Apache “No space left on device: Couldn’t create accept lock” errors

April 3rd, 2009 1 comment

Hello,

I was facing same error with one of my shared server last couple of week, apache was broke on server and getting following error in apache error logs file.

[emerg] (28)No space left on device: Couldn't create accept lock
[notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[notice] Digest: generating secret for digest authentication ...
[notice] Digest: done
[warn] pid file /etc/httpd/run/httpd.pid overwritten -- Unclean shutdown of previous Apache run?
[emerg] (28)No space left on device: Couldn't create accept lock

I checked disk space, or quota limit but everything was fine. I through it seem to apache semaphore problem

Apache can create the “accept lock” is with a semaphore. A semaphore is an inter-process communication tool that is used by Apache to communicate with it’s child processes. This error message may mean that Apache couldn’t create a new semaphore.

Check to see how many semaphores are currently in use. If Apache is running correctly, you should see something like this:

# ipcs -s

If Apache is stopped, and you still see these semaphores, then you can safely kill them by running this command for each semaphore id (in the second column)

$ ipcrm -s <semid>

To destroy all semaphores, you can run this from the command line (with “apache” being the apache-user:

for semid in `ipcs -s | grep apachec | cut -f2 -d" "`; do ipcrm -s $semid; done

OR

ipcs -s | grep apache | perl -e ‘while (<STDIN>) { @a=split(/\s+/); print `ipcrm sem $a[1]`}’

OR

ipcs -s | grep nobody | perl -e ‘while () { @a=split(/\s+/); print `ipcrm sem $a[1]`}’
ipcs -m | grep nobody | perl -e ‘while () { @a=split(/\s+/); print `ipcrm -m $a[1]`}’



OR

for i in `ipcs -s | awk ‘/httpd/ {print $2}’`; do (ipcrm -s $i); done

How to increase semaphore limit

To view the current parameters:

ipcs -l

To change these parameters, modify the file /etc/sysctl.conf and add the following lines:

kernel.msgmni = 1024
kernel.sem = 250 256000 32 1024

Then load these settings with the command:

sysctl -p

Regards

StacyM

System Administrator

Categories: Cpanel Server, Dedicated Server Tags: , , ,

PHP Fatal error: [ionCube Loader] The Loader must appear as the first entry in the php.ini file in Unknown on line 0

March 28th, 2009 No comments

Hello,
If you trying to installed Zend optimize and ionCube Loader on plesk server .
After installing Zend 3.0.1 and ionCube Loader php -v returns this:

PHP Fatal error: [ionCube Loader] The Loader must appear as the first entry in the php.ini file in Unknown on line 0
Here solution of this problem
1) Please go to cd /etc/php.d/ directory, edit ioncube.ini file and comment following line

#zend_extension=/usr/lib/php4/ ioncube_loader_lin_4.3.so

2) Now open php.ini file and add following code

zend_extension_manager.optimizer=/usr/local/Zend/lib/Optimizer-3.0.1
zend_extension_manager.optimizer_ts=/usr/local/Zend/lib/Optimizer_TS-3.0.1
zend_optimizer.version=3.0.1
zend_extension=/usr/local/ioncube/ioncube_loader_lin_4.3.so
zend_extension=/usr/local/Zend/lib/ZendExtensionManager.so
zend_extension_ts=/usr/local/Zend/lib/ZendExtensionManager_TS.so

(Note : Depend of php veriosn please change ioncube_loader_lin_4.X.so file )
Problem fixed :)
Enjoy ……………………:)

Regards
Alex P
System Administrator.

Categories: Dedicated Server Tags: ,