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Dedicated Server Hosting


Managed Dedicated Server Hosting

Managed dedicated server hosting services allow users who my not have the required skills or knowledge to manage a dedicated server the opportunity to have the dedicated server that they need without having to worry about the complicated management side of things. Managed Windows dedicated server hosting and managed Linux dedicated server hosting services are available which means that you should always be able to find a managed dedicated server hosting package that suits your needs, regardless of what your requirements may be. Although managed dedicated server hosting services may be slightly more expensive than unmanaged dedicated server hosting services, the amount of time that you will save yourself by letting others take control of the management of your dedicated server more than justifies the cost for most people. Dedicated server hosting in general is able to offer users a highly reliable web hosting service that cannot be matched by any other forms of web hosting - not even Hyper-V VPS servers or Virtuozzo VPS servers, but this added reliability does come at a cost.

Dedicated servers are also a lot more secure because you aren’t sharing any portion of your server with any other users unknowingly, thus allowing you to secure your server to such an extent that you know you are the only one who will be able to gain entry. A dedicated server can be used for any purpose which suits you as you won’t have to worry about the performance of other users’ websites affecting you or vice versa; there are many uses for a dedicated server which include applications and uses which you wouldn’t be able to get from shared web hosting services, and it is for this reason that many users consider dedicated web hosting services. In order to make the most of managed dedicated server hosting services, you should ensure that cheap VPS server hosting services aren’t able to fulfill your needs; if VPS server hosting is able to fulfill your needs then it would be a better idea to make use of VPS server hosting.

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Web Hosting

If you wish to upgrade existing kernel on your Linux Server you have to follow the following steps

login to your Linux Server with root user

Check the current kernel available with following command

#uname -r

Now download the new available kernel from kernel.org

http://rpm.pbone.net/index.php3/stat/3/srodzaj/2/search/kernel-2.4.21-47.0.1.EL.src.rpm

rpm -ihv kernel-smp-2.4.21-47.0.1.EL.i686.rpm

edit grub.conf and verify whether new kernel is available or not

For making new kernel as default kernel , make sure that it is available before previous on and default option is 0 in /boot/grub/grub.conf

then reboot the server using command

#shutdown -r now

728x90-server FSCK takes long time to complete

As a part of server administrations usually system administrator would run FSCK on server if they found there is some problem with file system and want to get it repaired, but unfortunately when you fire FSCK command on your Linux Server it may take several hours to get completed.

FSCK runs automatically at boot time when the server detects that a file system is in an inconsistent state, due to non-graceful shutdown, such as a system crash or power loss forcing your machine to switch-off. As a system administrator you can also run FSCK manually to check for file consistency.

Its always suggested to have ReiserFS or ext3 filesystems for your Linux server as both are journaling filesystems and are much reliable filesystems which can tolerate accidental power loss affecting your file systems of your server.

Time required for completing FSCK for a drive is directly proportional to drive size, server speed and amount/type of data on the drive which needs to be scanned and fixed, thus server with advance processor and fast speed would help you to reduce FSCK processing time.

Bzip2 is great utility which you can use with your VPS server. if you want to install it on your server just follow the following instructions.

# cd ..
# wget bzip.org/1.0.3/bzip2-1.0.3.tar.gz
# Type: tar zxvf bzip2-1.0.3.tar.gz
# Type: cd bzip2-1.0.3
# Type: make install

With APT:
# apt-get update
#Type: apt-get install bzip.

thats all, you can use Bzip on your server.

728x90-server  ICON for Fantastico is not appearing in cPanel

If Fantastico is installed on your Linux dedicated server but you are not getting the Icon of Fantastico under cPanel. In such case verify the following settings:

-please make sure that the Fantastico is enabled in your WHM’s Feature Sets as well as enabled in the WHM Fantastico admin

- Please make sure that their is a symlink to the Fantastico directory in every theme you use x or x3

ln -s /usr/local/cpanel/3rdparty/fantastico /usr/local/cpanel/base/frontend/x3

- Please verify the version of wget on your server and update it accordingly  wget-1.10.2-3.2.1 

For 32-bit:
Code:
rpm -qa wget ;
wget ftp://ftp.funet.fi/pub/mirrors/ftp.redhat.com/pub/fedora/linux/core/5/i386/os/Fedora/RPMS/wget-1.10.2-3.2.1.i386.rpm
chattr -ia /usr/bin/wget
rpm -e wget ;
rpm -ivh --force wget-1.10.2-3.2.1.i386.rpm ;
rpm -qa wget ;

For 64-bit:
Code:
rpm -qa wget ;
wget http://download.fedora.redhat.com/pub/fedora/linux/releases/7/Everything/x86_64/os/Fedora/wget-1.10.2-15.fc7.x86_64.rpm ;
chattr -ia /usr/bin/wget
rpm -e wget ;
rpm -ivh --force wget-1.10.2-15.fc7.x86_64.rpm ;
rpm -qa wget ;
once wget version get updated, Please install fantastico once again .

Web Hosting

With cpanel Linux Dedicated Server we are getting following error

error : [notice] child pid x exit signal File size limit exceeded (25.)

This error occurs due to log file limit exceeded on server. On linux 32 Bit server apache support maximum filesize upto 2GB. If any log file exceeded this limit then you will get above error and apache services het hanged
TO get it resolved you need to log files with following directories
/usr/local/apache/logs and /var/log/

To get it resolved you need to emptied your log files those are above 2GB

Spam emails is nothing but flooding  Internet with many copies of the same email messages or legitimate emails . We can also called it as junk emails . It is very frustrating when we receive spam emails in our inbox. Many spammers use various tricks to send spam emails to unknown email addresses like anybody@domain.com , main@domain.com etc . If you are have a web hosting account with cpanel as your control panel then you can easily avoid spam emails using “Default Address” option.

By default all your unrouted emails are received in your main users inbox.

So you can avoid it by adding the following line in your cpanel >> mail >> default address option

•  :fail: no such address here

You can also avoid spam emails using email filtering.

Cpanel >> Email Filtering  >> add filter

Here you need to use your own filtering techniques like filter spam emails with specific subject, email address, contents, message ID etc.

While choosing web host you need to consider following important factors of web host.

1: Security and reliability:

While hosting your site with any web hosting provider you must be sure that the servers are fully secured and reliable for your applications. That starts from basic website data protection especially hacking attempts are an important watch-point for web developers while selecting an host.

Security in terms of firewall, security patches, tweaking on server configurations to avoid hacking process,denial of service attacks (DDOS) etc.

Hosting provider or ISP is completely responsible for regular upgrades as well as security measures that are taken on a web server and lastly, daily / weekly backups are also part of their hosting packages to recover from any critical issues.

2:Customer Service

Customer Service is another important concept hosting business. Various Hosts offer a variety of customer services to attract customers. You need to sure that your service provider has 24X7 support on chats, phone and email. Technical expertise and experience are part of customer service.

3:Server Software

UNIX and Windows NT are the most common server software environments provided by hosting provider. server software can also affect a website with their limitation and restrictions. Your web developer should be aware of applications they will be using and assess which software environment will best suit their needs.

4: Internet Connection used by host:

Internet connection is very important while choosing hosting provider.
There are a bunch of variations T-1, T-3, OC-3 etc. A company that offers a T1 connection to the Internet can only allow 1.544 Mbps , T3 can allow up to 45 Mbps. An OC-256 can allow 13,000 Mbps, having ability to transfer much more information at a higher speed before getting down.

5: Speed:

Server performance and integration with software applications. How fast can they respond to your request ? When we speak of server speed, it clearly means that bandwidth and network connections are an important part. A server that is a host to many sites that are being accessed simultaneously may get bogged down. No matter how fast the connection is this can seriously slow down a viewer’s speed of browse a site. You can easily test the speed at which a server responds by “pinging” a site from your command prompt. Processor speed is also important. video and audio Streaming, forums and message boards, and highly animated applications all require huge amounts of memory and fast access to the main server. Overloaded processors can slow down a site’s transmission .

PHP and Apache are not being able to track which users are sending out mail through the PHP mail function from the nobody user causing leaks in formmail scripts and malicious users to spam from your server without you knowing who or where.

Monitiring exim_mainlog doesn’t exactly help, you see th email going out but you can’t track from which user or script is sending it. This is a quick and dirty way to get around the nobody spam problem on your Linux server

If you check out your PHP.ini file you’ll notice that your mail program is set to: /usr/sbin/sendmail and 99.99% of PHP scripts will just use the built in mail(); function for PHP - so everything will go through /usr/sbin/sendmail
Requirements:

We assume you’re using Apache 1.3x, PHP 4.3x and Exim. This may work on other systems but we’re only tested it on a Cpanel/WHM Red Hat Enterprise system.

Step 1:

Login to your server with root.

Step 2:
Turn off exim before proceeding
service exim stop

Step 3:
Take the Backup of your original /usr/sbin/sendmail file

mv /usr/sbin/sendmail /usr/sbin/sendmail_bak

Step 4:

You need to Create the spam monitoring script for the new sendmail.
pico /usr/sbin/sendmail

Paste in the following:

#!/usr/local/bin/perl

# use strict;
use Env;
my $date = `date`;
chomp $date;
open (INFO, “>>/var/log/spam_log”) || die “Failed to open file ::$!”;
my $uid = $>;
my @info = getpwuid($uid);
if($REMOTE_ADDR) {
print INFO “$date - $REMOTE_ADDR ran $SCRIPT_NAME at $SERVER_NAME n”;
}
else {

print INFO “$date - $PWD - @infon”;

}
my $mailprog = ‘/usr/sbin/sendmail.hidden’;
foreach (@ARGV) {
$arg=”$arg” . ” $_”;
}

open (MAIL,”|$mailprog $arg”) || die “cannot open $mailprog: $!n”;
while (<STDIN> ) {
print MAIL;
}
close (INFO);
close (MAIL);

save and close

Step 5:
Now change the new sendmail permissions
chmod a+x /usr/sbin/sendmail

Step 6:

Create a new log file to keep a history of all mail going out of the server using web scripts
touch /var/log/spam_log

chmod 0777 /var/log/spam_log

Step 7:
Start Exim up again.
/etc/init.d/exim start

Step 8:
You can Monitor your spam_log file for spam, try using any formmail or script that uses a mail function - a message board, a contact script.
tail - f /var/log/spam_log

Reference taken from : webhostgear.com

Hello,

ImageMagick is a software used to create, edit, and compose bitmap images. Using ImageMagick we can read, convert and write images in a variety of formats including DPX, EXR, GIF, JPEG, JPEG-2000, PDF, PhotoCD, PNG, Postscript, SVG, and TIFF. ImageMagick is used to translate, flip, mirror, rotate, scale, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.

ImageMagick is typically utilized from the command line or you can use the features from programs written in your favorite programming language. Choose from these interfaces: G2F (Ada), MagickCore (C), MagickWand (C)

How to install ImageMagick On Linux Server

wget ftp://ftp.imagemagick.org/pub/ImageMagick/ImageMagick.tar.gz

tar -zxvf ImageMagick*.tar.gz
cd ImageMagick*

./configure

make

make install

You can verify the installation with command :

which convert

Regards,

Tuks

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