Linux Servers cPanel webhosting blog » Install server side software / script

Install and upgrade the rsync

Gunjan — Mon, 26 Dec 2011 05:45:32 +0000

To increase the download speed via rsync its always better to use the latest rsync version.Refer to the following steps to install and upgrade the rsync

Loghin in to the server as a root user

root@linux7802 [~]# cd /usr/src/

Now download the latest rsync version source from the url https://rsync.samba.org/ftp/rsync/src/

root@linux7802 [/usr/src]#wget https://rsync.samba.org/ftp/rsync/src/rsync-3.0.9.tar.gz

root@linux7802 [/usr/src]#tar -xzvf rsync-3.0.9.tar.gz

root@linux7802 [/usr/src]#cd rsync-3.0.9/

root@linux7802 [/usr/src/rsync-3.0.9]# ./configure

root@linux7802 [/usr/src/rsync-3.0.9]# make

root@linux7802 [/usr/src/rsync-3.0.9]# make test

root@linux7802 [/usr/src/rsync-3.0.9]# make install

root@linux7802 [/usr/src/rsync-3.0.9]# rm -f /usr/bin/rsync

root@linux7802 [/usr/src/rsync-3.0.9]# ln -s /usr/local/bin/rsync /usr/bin/rsync

Now check the new rsync version

root@linux7802 [/usr/src/rsync-3.0.9]# rsync –version
rsync version 3.0.9 protocol version 30

Its 3.0.9 now

Enable mod gzip and mod deflate module

Gunjan — Sat, 24 Dec 2011 05:51:34 +0000

The server load is normal but web pages are loading very slow due to heavy web size therefore at that time, we can enable the web page compression for the hosting account. To enable the compress make sure that mod_deflate module.

To install the mod_deflate module refer the following setps.

root@linux7802 [~]# /scripts/easyapache

Select the “Deflate” option available under the “Apache Built-in Modules” as soon as Apache recompiled login in to domain hosting account under which you are facing the problem.

For example the linux7802.com domain having the slow web page loading issue therefore we can create the new .htaccess file or edit the existing .htaccess file and add the following code.

#compress all text & html:
AddOutputFilterByType DEFLATE text/html text/plain text/xml
# Or, compress certain file types by extension:

SetOutputFilter DEFLATE

Check the following file

root@linux7802 [/home/linux780/public_html]# cat .htaccess
#compress all text & html:
AddOutputFilterByType DEFLATE text/html text/plain text/xml
# Or, compress certain file types by extension:

SetOutputFilter DEFLATE

We can also use the following code in the .htaccess file

#compress all text & html:
AddOutputFilterByType DEFLATE text/html text/plain text/xml
# Or, compress certain file types by extension:

SetOutputFilter DEFLATE

After adding the above check the web page compression by using the following URL

http://www.gidnetwork.com/tools/gzip-test.php

cPanel easyapache error “pdo was disabled by the dso patch”

Gunjan — Tue, 23 Aug 2011 03:02:42 +0000

While enabling the PDO extension using the /scripts/easyapache the following error occur

pdo was disabled by the dso patch

To avoid above error message do not select “Concurrent DSO patch” option in EasyApache under the “Exhaustive Options List” and recompile the Apache with the PDO module.

Install clamAV?

Gunjan — Thu, 13 May 2010 18:24:45 +0000

We can install clamAV by using following three options.

First Download ClamAV from www.clamav.net in default locations under /usr/local/[bin,man,share]
Run following from shell.

root@server[]perl -MCPAN -e shell
root@server[]install Parse::RecDescent
root@server[]install Inline
root@server[]install Mail::ClamAV

Second option run /scripts/perlinstaller from shell

root@server[]/scripts/perlinstaller Net::CIDR Archive::Zip Compress::Zlib Convert::BinHex Inline::C
or

root@server[]/scripts/perlinstaller Mail::ClamAV

Third you can install ClamAV from WHM

Select Main >> Software >> Install a Perl Module from WHM .

install perl module:-
search for Mail::clamAV
install it

We can also enabled virus scanner feature to cPanel user from WHM >> Main >> cPanel>> Manage Plugins

Select “Name: clamavconnector” from list and install it.

How to upgrade kernel version?

Gunjan — Tue, 11 May 2010 11:24:08 +0000

First you need to download the latest stable kernel.
You can check it at http://kernel.org/.
Download it :
root@server [~]# cd /usr/local/src/

root@server [~]# wget http://www.kernel.org/pub/linux/kernel/v2.6/
Select latest Kernel and download it

root@server [~]# tar –zxvf linux-2.6.28.tar.gz
root@server [~]#cd linux-2.6.28
root@server [~]# make clean
root@server [~]# make mrproper
root@server [~]# uname -r
root@server [~] # cp /boot/config-’uname -r’ .config
root@server [~] # make oldconfig
root@server [~] # make menuconfig
root@server [~] # make
root@server [~] # make modules_install
root@server [~] # make install
root@server [~] # grubby –bootloader-probe
root@server [~] # pico /etc/grub.conf
Change the default as per the entry for your new kernel.
root@server [~]# reboot

Some time after reboot server it won’t up and running with the new kennel due to that before rebooting server, make following

changes.

root@server [~]#grub

Above command will give you grub prompt.

grub > savedefault –default=0 –once

grub>quit

root@server [~]#reboot

If server is up and running after reboot you can set new kernel as default server in grub.conf file.

root@server [~]#pico /boot/grub/grub.conf

Set

default=1

default=0

How to install Webmin?

Gunjan — Mon, 28 Dec 2009 09:07:59 +0000

You can install webmin by using following steps.

root@gunjan[~]#cd /usr/local/src

root@gunjan[~]#wget http://sourceforge.net/projects/webadmin/files/webmin/1.500/webmin-1.500-1.noarch.rpm/download

root@gunjan[~]#rpm -Uvh webmin-1.500-1.noarch.rpm

warning: webmin-1.500-1.noarch.rpm: Header V3 DSA signature: NOKEY, key ID xxxxx
Preparing… ########################################### [100%]
Operating system is CentOS Linux
1:webmin ########################################### [100%]
Webmin install complete. You can now login to http://server.domain.com:10000/
as root with your root password.

How to install YUM on plain Server?

Gunjan — Fri, 25 Dec 2009 10:13:44 +0000

First you need to login into shell as root user than follow the steps one by one.

[root@gunjan]#mkdir /root/support && cd /root/support

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/gmp-4.1.4-10.el5.i386.rpm

[root@gunjan]#rpm -Uvh gmp-4.1.4-10.el5.i386.rpm

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/readline-5.1-3.el5.i386.rpm

[root@gunjan]#rpm -Uvh readline-5.1-3.el5.i386.rpm

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/python-2.4.3-27.el5.i386.rpm

[root@gunjan]#rpm -Uvh python-2.4.3-27.el5.i386.rpm

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/libxml2-2.6.26-2.1.2.8.i386.rpm

[root@gunjan]#rpm -Uvh libxml2-2.6.26-2.1.2.8.i386.rpm

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/libxml2-python-2.6.26-2.1.2.8.i386.rpm

[root@gunjan]#rpm -Uvh libxml2-python-2.6.26-2.1.2.8.i386.rpm

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/expat-1.95.8-8.2.1.i386.rpm

[root@gunjan]#rpm -Uvh expat-1.95.8-8.2.1.i386.rpm

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/python-elementtree-1.2.6-5.i386.rpm

[root@gunjan]#rpm -Uvh python-elementtree-1.2.6-5.i386.rpm

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/sqlite-3.3.6-5.i386.rpm

[root@gunjan]#rpm -Uvh sqlite-3.3.6-5.i386.rpm

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/python-sqlite-1.1.7-1.2.1.i386.rpm

[root@gunjan]#rpm -Uvh python-sqlite-1.1.7-1.2.1.i386.rpm

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/elfutils-0.137-3.el5.i386.rpm

[root@gunjan]#rpm -Uvh elfutils-0.137-3.el5.i386.rpm

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/rpm-python-4.4.2.3-18.el5.i386.rpm

[root@gunjan]#rpm -Uvh rpm-python-4.4.2.3-18.el5.i386.rpm

[root@gunjan]#It will throw following error.

[root@gunjan]# rpm -Uvh rpm-python-4.4.2.3-18.el5.i386.rpm

warning: rpm-python-4.4.2.3-18.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID e8562897
error: Failed dependencies:
popt = 1.10.2.3-18.el5 is needed by rpm-python-4.4.2.3-18.el5.i386
rpm = 4.4.2.3-18.el5 is needed by rpm-python-4.4.2.3-18.el5.i386
rpm-libs = 4.4.2.3-18.el5 is needed by rpm-python-4.4.2.3-18.el5.i386

In that case search dependencies in following URL

http://rpm.pbone.net/

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/m2crypto-0.16-6.el5.6.i386.rpm

[root@gunjan]#rpm -Uvh m2crypto-0.16-6.el5.6.i386.rpm

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/python-urlgrabber-3.1.0-5.el5.noarch.rpm

[root@gunjan]#rpm -Uvh python-urlgrabber-3.1.0-5.el5.noarch.rpm

[root@gunjan]#wget http://mirror.centos.org/centos-5/5/os/i386/CentOS/yum-3.2.22-20.el5.centos.noarch.rpm

[root@gunjan]#rpm -Uvh yum-3.2.22-20.el5.centos.noarch.rpm

It will throw following error.

[root@gunjan]# rpm -Uvh yum-3.2.22-20.el5.centos.noarch.rpm
warning: yum-3.2.22-20.el5.centos.noarch.rpm: Header V3 DSA signature: NOKEY, key ID e8562897
error: Failed dependencies:
python-iniparse is needed by yum-3.2.22-20.el5.centos.noarch
rpm-python is needed by yum-3.2.22-20.el5.centos.noarch
yum-fastestmirror is needed by yum-3.2.22-20.el5.centos.noarch
yum-metadata-parser >= 1.1.0 is needed by yum-3.2.22-20.el5.centos.noarch

In that case search dependencies in following URL

http://rpm.pbone.net/

Once you complete all dependencies you can update yum by using following command

[root@gunjan]#yum -y update

How to install install Eaccelerator?

Gunjan — Mon, 07 Dec 2009 05:15:16 +0000

To install Eaccelerator manually refer following steps one by one carefully.

1. First you need to login into shell as root user

2. Now we’ll make the eaccelerator directory:

root@gunjan[]#cd ~

root@gunjan[~]#mkdir /eaccelerator/

root@gunjan[~]#cd /eaccelerator/

2. Now download the source file

root@gunjan[~]#wget http://heanet.dl.sourceforge.net/sourceforge/eaccelerator/eaccelerator-0.9.4-rc1.tar.bz2

root@gunjan[~]#bzip2 -d eaccelerator-0.9.4-rc1.tar.bz2

root@gunjan[~]#tar xvf eaccelerator-0.9.4-rc1.tar

3. Now install Eaccelerator:

root@gunjan[~]#cd eaccelerator-0.9.4-rc1/

root@gunjan[~]#export PHP_PREFIX=”/usr”

root@gunjan[~]#$PHP_PREFIX/bin/phpize

root@gunjan[~]#./configure –enable-eaccelerator=shared –with-php-config=$PHP_PREFIX/bin/php-config

root@gunjan[~]#make

root@gunjan[~]#make install

4. Now basically eaccelerator installed, now we need to edit the php.ini files to
include Eaccelerator extension.

root@gunjan[~]#php -i | grep php.ini
Configuration File (php.ini) Path => /usr/local/lib
Loaded Configuration File => /usr/local/lib/php.ini

root@gunjan[~]#pico /usr/local/lib/php.ini

copy and paste following lines php.ini carefully
———————-
extension=”eaccelerator.so”
eaccelerator.shm_size=”16?
eaccelerator.cache_dir=”/tmp/eaccelerator”
eaccelerator.enable=”1?
eaccelerator.optimizer=”1?
eaccelerator.check_mtime=”1?
eaccelerator.debug=”0?
eaccelerator.filter=””
eaccelerator.shm_max=”0?
eaccelerator.shm_ttl=”0?
eaccelerator.shm_prune_period=”0?
eaccelerator.shm_only=”0?
eaccelerator.compress=”1?
eaccelerator.compress_level=”9?
———————-

For a Zend extension install server (only if you have Zend installed on your server, or
if you’re going to install it)

———————-
zend_extension=”/usr/lib/php4/eaccelerator.so”
eaccelerator.shm_size=”16?
eaccelerator.cache_dir=”/tmp/eaccelerator”
eaccelerator.enable=”1?
eaccelerator.optimizer=”1?
eaccelerator.check_mtime=”1?
eaccelerator.debug=”0?
eaccelerator.filter=””
eaccelerator.shm_max=”0?
eaccelerator.shm_ttl=”0?
eaccelerator.shm_prune_period=”0?
eaccelerator.shm_only=”0?
eaccelerator.compress=”1?
eaccelerator.compress_level=”9?
———————-

5. Now you need to make the cache directory on your server, where the cache files will be
stored for eaccelerator
root@gunjan[]#cd ~

root@gunjan[~]#mkdir /tmp/eaccelerator/

root@gunjan[~]#chmod 0777 /tmp/eaccelerator/

6. Now restart Apache so that Eaccelerator will start working:

service httpd restart

Now check eAccelerator by using following command

root@gunjan[~]#php -v
PHP 5.2.11 with Suhosin-Patch 0.9.7 (cli) (built: Nov 20 2009 14:28:34)
Copyright (c) 1997-2009 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2009 Zend Technologies
with eAccelerator v0.9.5.3, Copyright (c) 2004-2006 eAccelerator, by eAccelerator
with the ionCube PHP Loader v3.3.7, Copyright (c) 2002-2009, by ionCube Ltd., and
with SourceGuardian v8.0, Copyright (c) 2000-2009, by Inovica Ltd.
with Zend Optimizer v3.3.9, Copyright (c) 1998-2009, by Zend Technologies
with Suhosin v0.9.29, Copyright (c) 2007, by SektionEins GmbH

You done it enjoy

How to patch openssl version?

Gunjan — Wed, 04 Nov 2009 04:51:34 +0000

You can patch openssl version by using following steps but make sure that you are able to SSH server as root user user.

root@gunjan[/usr/local/src]#cd /usr/local/src
root@gunjan[/usr/local/src]#wget http://www.openssl.org/source/openssl-0.9.8h.tar.gz
root@gunjan[/usr/local/src]#tar -zxf openssl-0.9.8h.tar.gz
root@gunjan[/usr/local/src]#cd openssl-0.9.8h
root@gunjan[/usr/local/src]#./Configure –prefix=/usr debug-linux-pentium (or choose right os)
root@gunjan[/usr/local/src]#make
root@gunjan[/usr/local/src]#make install

To check openssl version simply run openssl version

root@gunjan[/usr/local/src]#openssl version

Step by step instructions to install VNC

Gunjan — Wed, 09 Sep 2009 01:57:36 +0000

Refer following step by step instructions to install VNC
1) As root user fire the commands

yum install vnc-server xorg-x11-xauth xorg-x11 twm xterm

2) if yum is not working, download the rpm using “wget http://mirror.pacific.net.au/linux/CentOS/4.2/os/i386/CentOS/RPMS/vnc-server-4.0-8.1.i386.rpm”
2.1) install vncserver by the command “rpm -Uvh vnc-server-4.0-8.1.i386.rpm”

3) start vncserver by “vncserver :0“. You will be asked for password, set the password you require.

4) try to vnc into your Linux box from Windows to your Linux box using server_ip:5900 eg. 192.168.0.21:5900
4.1) if it doesn’t work, bring down your firewall by doing “service iptables stop” and vnc from your Windows again.

5) you can stop the vncserver by using command “vncserver -kill :0”

6) remember to bring your firewall back up “service iptables start”

7) you might want to have gnome, kde running.. in that case look into your ~/.vnc/xstartup file, uncomment two lines (# unset SESSION_MANAGER and # exec /etc/X11/xinit/xinitrc)

If gnome is not install, Install Gnome using “yum install gnome-* ” and set the server to use gnome desktop using “switchdesk gnome” and restart VNC.

9) you might want to start vncserver when the system reboots, use “chkconfig –level 345 vncserver on”

10) You can change the VNC server password using “vncpasswd”

Note : If getting error while starting VNC
——
[root@202 conf]# vncserver :0
vncserver: couldn’t find “xauth” on your PATH.
——
do:
check if xauth is installed

which xauth
yum install xorg-x11-xauth
yum install xorg-x11
yum install twm
yum install xterm