http://ganglia.info/?page_id=66

ntop

The interesting part is the final flag which tells the syslog not to process any further the message. This way the message stays only in the rails application logfile.

log { source(src); filter(f_rails); destination(rails_log); flags(final); };

Here is the whole conf file


options {
chain_hostnames(off);
sync(0);dns_cache(2000);
dns_cache_expire(87600);
# The default action of syslog-ng 1.6.0 is to log a STATS line
# to the file every 10 minutes. That's pretty ugly after a while.
# Change it to every 12 hours so you get a nice daily update of
# how many messages syslog-ng missed (0).
stats(43200);
};

destination messages { file(“/var/log/messages”); };

# By default messages are logged to tty12…
# destination console_all { file(“/dev/tty12″); };
# …if you intend to use /dev/console for programs like xconsole
# you can comment out the destination line above that references /dev/tty12
# and uncomment the line below.
#destination console_all { file(“/dev/console”); };

source src {
unix-stream(“/dev/log” max-connections(256));
internal();
file(“/proc/kmsg”);
};

destination rails_log { file(“/var/log/system3.log”); };
filter f_rails { program(“rails.*”); };
log { source(src); filter(f_rails); destination(rails_log); flags(final); };

log { source(src); destination(messages); };
log { source(src); destination(console_all); };

On my last Debian Etch installation I have to commeted the “source src” and added just those lines

# we will use the default source configuration

#source src {
#unix-stream(“/dev/log” max-connections(256));
#internal();
#file(“/proc/kmsg”);
#};

destination rails_log { file(“/var/log/system3.log”); };
filter f_rails { program(“rails.*”); };
log { source(s_all); filter(f_rails); destination(rails_log); flags(final); };

Put this at the beginig of the log {} directives because we need want the final flag to take affect.

http://www.blueboxgrp.com/news/2009/06/unified_rails_logging_with_syslog-ng

One of my friends has bouth a new laptop from USA and I want to change the base language of his operating system to Bulgarian. The Bulgarian language is fully support by Microsoft. My surprise was big when I got the “Only language please…” from the Regional Settings language switcher pane.

I want to use one language but I don’t want English I want Bulgarian. Why I cant switch it?

The solution come from Vistalizator. This software has fixed all my troubles. Now I have two languages on my Windows Vista Home (who said that Vista Home dosn’t support two languages :) ?

Someone has made already forum/topic where you can express what you feel working with Microsoft products.

http://getdeb.net/

winetricks

wget www.kegel.com/wine/winetricks
example: ./winetricks winver=winxp
example: ./winetricks vcrun2005

http://www.virtualbox.org/

Disk managment
KDirStat and Baobab

Security

http://pakiti.sourceforge.net/ – monitor and install patches on multiple servers, supports ubunto, and rh

games

LiveCD

• Download from http://www.nuclearelephant.com/projects/dosevasive/
• extract it
• apxs2 -i -a -c mod_dosevasive20

Configure the apache2

Edit your httpd.conf (usually located in /usr/local/apache/conf/httpd.conf):
Add:

<IfModule mod_dosevasive20.c>
  DOSHashTableSize 3097
  DOSPageCount 2
  DOSSiteCount 50
  DOSPageInterval 1
  DOSSiteInterval 1
  DOSBlockingPeriod 10
  DOSEmailNotify someuser@somedomain.com
  DOSSystemCommand "/dir/command  %s"
</IfModule>

Then you can restart

• /etc/init.d/apache2 restart

Be carefull because the options are extremly important. For example if your web application use one file as a controller all the requests will go to this file you will got very often such errors:

Here is a short help on the configuration options

- DOSHashTableSize: is the size of the table of URL and IP combined
- DOSPageCount: is the number of same page requests from the same IP during an interval that will cause that IP to be added to the block list.
- DOSSiteCount: is the number of pages requested of a site by the same IP during an interval which will cause the IP to be added to the block list.
- DOSPageInterval: is the interval that the hash table for IPs and URLs is erased (in seconds)
- DOSSiteInterval: is the intervale that the hash table of IPs is erased (in seconds)
- DOSBlockingPeriod: is the time the IP is blacked (in seconds)
- DOSEmailNotify: can be used to notify by sending an email everytime an IP is blocked
- DOSSystemCommand: is the command used to execute a command when an IP is blocked. It can be used to add a block the user from a firewall or router.
- DOSWhiteList: can be used to whitelist IPs such as 127.0.0.1