After assigning a GC role to a server, check its Directory Services event log for event number 1119, which indicates successful obtaining a role of a Global Catalog server

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Now, in Ubuntu all we need to do is install libapache2-authenntlm-perl

apt-get install libapache2-authenntlm-perl

Done.

Now just edit your apt-get'ed Apache installation and modify your Directory options

nano /etc/apache2/sites-enabled/000-default

apac

<Directory />
        Options FollowSymLinks
	AllowOverride None
 
	  PerlAuthenHandler Apache2::AuthenNTLM
	  AuthType ntlm
	  AuthName "Hill Hire plc"
	  require valid-user
	  PerlAddVar ntdomain "!!DOMAIN NAME!! !!LOGON SERVER!!"
	  PerlSetVar defaultdomain !!DOMAIN NAME!!
	  PerlSetVar ntlmsemtimeout 2
	  PerlSetVar ntlmdebug 1
	  PerlSetVar splitdomainprefix 1
 
</Directory>

Restart apache and your on tea isn't even cool enough to drink yet.

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MyTop is one of the best MySQL monitoring tools available, written by a MySQL guru, Jeremy Zawodny.

Its vital for monitoring your MySQL health, especially in a shared hosting environment.

Installation on a CentOS (for cPanel) server is quite straight forward with this guide.
First off, we need a few perl modules, cPanel's realperlinstaller comes in handy, if you aren't on cPanel, you'll need to CPAN or manually install these modules.

/scripts/realperlinstaller --force Getopt::Long
/scripts/realperlinstaller --force DBI
/scripts/realperlinstaller --force DBD::mysql
/scripts/realperlinstaller --force Term::ReadKey

Now, we download and install mytop.

wget http://jeremy.zawodny.com/mysql/mytop/mytop-1.6.tar.gz
tar zxpfv mytop-1.6.tar.gz
cd mytop-1.6
perl Makefile.PL && make && make install

NOTE: You may get following error in CentOS 5.3
Error in option spec: “long|!”

Search for the line in Makefile.PL

“long|!”              => \$config{long_nums},

Change it to by commenting using #

#”long|!”              => \$config{long_nums},

Easy fix.

Now you can run mytop

mytop -d mysql

Done!

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First off, we need to download the GeoIP libraries.Installing the library

wget http://www.maxmind.com/download/geoip/api/.../c/GeoIP.tar.gz
tar xzfv GeoIP.tar.gz
cd GeoIP-1.4.6/
./configure
make
make check
make install

Download data file

The GeoIP system works by reading a binary data file, we need to download it. Its a good idea to write a cron wrapper around this to keep it updated

mkdir /usr/share/GeoIP/
cd /usr/share/GeoIP/
mv GeoIP.dat GeoIP.dat_orig
wget http://geolite.maxmind.com/download/geoip/database/GeoLiteCountry/GeoIP.dat.gz
gunzip GeoIP.dat.gz

Download and install the Apache module

wget http://www.maxmind.com/download/geoip/api/...ip_1.2.5.tar.gz
tar xzfv mod_geoip_1.1.1.tar.gz
cd mod_geoip_1.1.1
apxs -cia -I/usr/local/include -L/usr/local/lib -lGeoIP mod_geoip.c

Server Configuration

In cPanel, I had to edit the Apache Configuration -> Includes Editor -> Post VirtualHost Include
Or you could edit./usr/local/apache/conf/includes/post_virtualhost_2.conf

<IfModule mod_geoip.c>
GeoIPDBFile /usr/share/GeoIP/GeoIP.dat
</IfModule>

cPanel users only, we need to distill the apxs module into Apache so it isn't lost next time you rebuild or upgrade cPanel/Apache.

/usr/local/cpanel/bin/apache_conf_distiller -–update

Restart apache.

Here's a snippet of code that blocked 99% of spam from my client's UK based phpBB forum.

# START Block Countries
<IfModule mod_geoip.c>
GeoIPEnable On
RewriteEngine On
RewriteCond %{ENV:GEOIP_COUNTRY_CODE} !^(GB|US|IE|AU|PT)$
RewriteRule ^(.*)$ http://<SITE>/access-denied [L]
</IfModule>
# END Block Countries

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Initial setup

apt-get update

and now install the package update-manager-core:

apt-get install update-manager-core

nano /etc/update-manager/release-upgrades

Change Prompt=lts to Prompt=normal

Doing the upgrade

do-release-upgrade

Follow the prompts, its easy.

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Please can you make sure that when you turn the tap off in the kitchen you don’t turn it till it stops dripping.

It’s meant to drip & people have been struggling to turn it back on.

Regards

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No related posts.

It uses an internal hash table of IPs and URLs and can temporarily block web requests to anyone requesting a large number of page views, or making many concurrent requests. Properly configured it can help evade DDOS attacks and keep your customers happy.

You can integrate it with iptables and hardware firewalls too if you like.

This guide is only cPanel specific to the point where you edit the configuration file.

Check the latest version from the mod_evasive web site. It is 1.10.1 in Jan 2010.

wget http://www.zdziarski.com/projects/mod_evasive/mod_evasive_1.10.1.tar.gz
tar zxvf mod_evasive_1.10.1.tar.gz
cd mod_evasive

I am assuming you use apxs to load dymanic modules into apache. You really should.

/usr/local/apache/bin/apxs -i -a -c mod_evasive20.c

cPanel users only, we need to distill the apxs module into Apache so it isn't lost next time you rebuild or upgrade cPanel/Apache.

/usr/local/cpanel/bin/apache_conf_distiller –update

cPanel users can edit /usr/local/apache/conf/includes/post_virtualhost_2.conf or use the Apache Configuration option in WHM.

Vanilla Apache users can just stick the config in their httpd.conf.

<IfModule mod_evasive20.c>
DOSHashTableSize    3097
DOSPageCount        2
DOSSiteCount        50
DOSPageInterval     1
DOSSiteInterval     1
DOSBlockingPeriod   3600
</IfModule>

Optionally you can also add the following directives;

DOSEmailNotify      you@yourdomain.com
DOSSystemCommand    "/etc/apf/apf -d %s'"
DOSLogDir           "/var/lock/mod_evasive"

I use APF firewall, with the DOSSystemCommand so I can automatically dop offending IPs at the firewall rather than at Apache.

Hopefully you will never see an email from mod_evasive, but you know its there, ready and waiting.

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You can enable mod_deflate in cPanel really easily with /scripts/easyapache. Easy.

Once built, you need to tell it to do something. You'll see a new icon on your sites cPanel now, called "Optimize Site". You can enable it on a per site basis.

Thats all very well, but most users won't know that feature and they will annoy you saying their site isn't very fast.

Lets enable it globally to save any hassle.

You will need to edit your Post VirtualHost Include. In WHM;

• Apache Configuration
• Include Editor
• Select All Versions of Post VirtualHost Include
• Paste the following below

<IfModule mod_deflate.c>
	AddOutputFilterByType  DEFLATE text/html text/plain text/xml
 
	<IfModule mod_setenvif.c>
		# Netscape 4.x has some problems…
		BrowserMatch ^Mozilla/4 gzip-only-text/html
 
		# Netscape 4.06-4.08 have some more problems
		BrowserMatch ^Mozilla/4\.0[678] no-gzip
 
		# MSIE masquerades as Netscape, but it is fine
		# BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
 
		# NOTE: Due to a bug in mod_setenvif up to Apache 2.0.48
		# the above regex won’t work. You can use the following
		# workaround to get the desired effect:
		BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html
 
		# Don’t compress images
		SetEnvIfNoCase Request_URI \
    		\.(?:exe|t?gz|zip|bz2|sit|rar)$ \
		    no-gzip dont-vary
		SetEnvIfNoCase Request_URI \.pdf$ no-gzip dont-vary
 
	</IfModule>
 
	<IfModule mod_headers.c>
		# Make sure proxies don’t deliver the wrong content
		Header append Vary User-Agent env=!dont-vary
	</IfModule>
</IfModule>

Restart apache and enjoy.

You can use tools such as YSlow or Google Page Speed to diagnose your gzip savings.

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