curl: (77) Problem with the SSL CA cert (path? access rights?)

This is an issue with  ca-certificates that bundles with the server. You may simply need to reinstall the  following packages for fixing this issue.

# yum reinstall ca-certificates

# yum reinstall openssl

 This will fix your issues, with   curl: (77) Problem with the SSL CA cert (path? access rights?)

How to Configure Multiple shared IP’s in WHM

You can’t add multiple shared IPs in WHM GUI, but it’s possible to do so via SSH (login as root).
First, you need to create a /var/cpanel/mainips/ directory, if it doesn’t exist:

# mkdir /var/cpanel/mainips/

Then, create a /var/cpanel/mainips/root file, with all the Ips as folllows

10.0.0.10
10.0.0.12

Basically, each line is an additional shared IP in WHM. That’s it!
You can verify from WHM>>Home>>IP Functions>>Show/Edit Reserved IPs

Change of default page in cpanel/WHM

In WHM, look for "Account Functions" and choose "Skeleton Directory". This will show you where your directory is. Anything you add to your skel directory will automatically be added to the users directory when you create a new account.

If you place a default HTML page within the "public_html" sub-directory then it will be included within the public_html directory of the user's new account upon creation.

Example paths:

/root/cpanel3-skel
/root/cpanel3-skel/public_html
/root/cpanel3-skel/public_html/index.html

How to fix the FTP time out error

How to resolve the error :

[bash]!connection failed xx.xx.xxx.xxx – connection timed out
!connectio:error 0
PORT xxx,xxx,x,x,x,xxx
500 Illegal PORT command
!Failed "port"
!Retrieve of folder listing failed (0)[/bash]

This  error occurs when we are able to connect using FTP but folder listing fails!
Resolution:
1)Login to the WHM==> FTP Server Selection
2)change the FTP server to Pure-FTPD from PRO-FTP  ==>  Save
3)Now ssh into the server as root and open the pure-ftp conf file /etc/pure-ftpd.conf
4)Find the FTP port no: used the “PassivePortRange” from the config file
5)Add the port range into the config file
for eg :

[bash][/bash]PassivePortRange 30000 40000[bash][/bash]

6)Save and quit
7)Open the  csf(firewall) config file, add the ftp port along with the passive port range
eg :

[bash][/bash]# Allow incoming TCP ports
TCP_IN = “20,22,25,53,80,110,143,443,465,587,993,995,2001,2077,2078,2082,2083,2086,2087,
2095,2096,30000:40000″[bash][/bash]

8)Restart csf & Pure-ftpd

How to fix the WHM CSF security test errors!

As a part of ensuring security, we perform a CSF security scan from WHM. We may get the following error after the scan

Check csf LF_SCRIPT_ALERT option WARNING This option will notify you when a large amount of email is sent from a particular script on the server, helping track down spam scripts

To fix this error :  ssh into the server and edit the csf configuration file

vi /etc/csf/csf.conf

search for LF_SCRIPT_ALERT = “0″

Change the value from “0″ to “1″ to fix the issue.

Don’t forget to restart the CSF

You may also get the following error :

cPanel icons missing on WHM

Usually WHM allows you to login to the cPanel accounts from the “List Account” option. But sometimes you may not able see the cPanel icons which prevents you to login to the cPanel account as root.
FIX:-
goto “Tweak Settings” and uncheck the option below

Disable login with root or reseller password into the users’ cPanel interface. Also disable switch account dropdown in themes with switch account feature.

How to change Linux root password temporarily.

This is a simple technique by which you can have your our root password temporarily and change it back to the real one after use. The condition is
* You are logged in as root and you don’t know the root password
Back-up the current shadow file.

[root@localhost ~]# cp /etc/shadow /etc/shadowbkup

Change the current root password the desired one.

How to transfer a cPanel account to DirectAdmin.

The file structure and back-ups for both control panels are entirely different and its quite difficult to restore the files transfered from one to another control panel manually. There is a script available which can convert a cPanel back-up to the format that of a DirectAdmin. The convert process is quite simple.

Download the conversion script from here .

*You can download it using the terminal :

wget -c http://kade.nu/da/da.cpanel.import.9.4.tar.gz

*Create two directories import and export :

mkdir import export

Find Linux OS is 32 or 64bit.

There are several situations where you need to confirm whether your Linux OS installed  is 32bit or 64bit. People normally use uname -a to find it. But the following command will tell you exactly the machine   architecture.

getconf LONG_BIT

getconf utility shall conform to the Base Definitions volume of IEEE Std 1003.1-2001, Section 12.2, Utility  Syntax.

eg:

[root@localhost ~]# getconf LONG_BIT
32
[root@localhost ~]#

My machine is 32bit.

How to disable gzip output on lightspeed server accounts

You can use .htaccess to disable gzip output if your website is running under a lightspeed server.

Open .htacess file and append following lines.

php_flag zlib.output_compression Off
RewriteEngine On
RewriteRule . – [E=no-gzip:1]
RewriteRule ^(.*)$ $1 [E=no-gzip:1]

How to configure NAT with iptables on a VPS.

NAT ( network-address-translation ) with iptables  helps us in how to select the packets we want to mangle. We can easily configure NAT on a OpenVZ VPS by following the below steps.

Lets first consider a VPS in which NAT is not enabled. Trying to POSTROUTE from VPS throws you errors.

iptables -t nat -A POSTROUTING -s 10.9.0.0/24 -o venet0 -j SNAT –to 111.140.170.134

or iptables -t nat -nvL

iptables v1.3.5: can’t initialize iptables table `nat’: Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

To Enable NAT :

* Login to Node server.

Check vzcinfiguration file to find whether NAT is enabled or not.

grep -i iptables /etc/vz/vz.conf

You will get

Exim: remove mails in queue from a particular sender.E

“spams”, its one of the major issue that a sys admin has to deal with throughout his job.  First you need to find the user who is generating it. You can get it from the mail headers.  Once you find the user, disable the script that was responsible for spams, but it may have already kept thousands(may be lacks) of mails in the exim queue waiting for its chance to get delivered.  To delete these mails one by one is impossible.  In a cPanel server having exim mail,  you can use the following command to delete mails in the current queue generated by that particular user only.

SSH into the server

    exiqgrep -i -f user@domain.com | xargs exim -Mrm

-i print messages id
-f from address
-Mrm remove mails

Remove mails to a particular sender in the queue :-

    exiqgrep -i -t user@domain.com | xargs exim -Mrm

-t to address

How to enable DKIM in cPanel server.

DomainKeys Identified Mail (DKIM) lets an organization take responsibility for a message while it is in transit and one can use this to prevent from getting blacklisted by the free email providers like Yahoo, MSN and Google. DKIM can increase the mail authenticity.

cPanel does not have an interface to enable DKIM like we have for SPF and Domain Keys. cPanel is still working on it for getting it implemented. However we can enable it manually by following the below steps.

Check if exim is compiled with DKIM support enabled.

 [bash]root@server # /usr/sbin/exim -dd 2>&1 | grep Experimental_DKIM[/bash]
    [bash]Support for: crypteq iconv() IPv6 PAM Perl OpenSSL Content_Scanning Old_Demime Experimental_SPF Experimental_SRS
    Experimental_DomainKeys Experimental_DKIM[/bash]

HowTo Uninstall RVSkin

This is the duty of root/admin to do by running the following command.

perl /root/rvadmin/uninstall.pl

if for some reason RVskin was installed in a different location, change the path accordingly.

To complete this, restart cpanel:

/etc/rc.d/init.d/cpanel restart

How to change your hostname with SSH

If you’ve worked in the admin world for any length of time, you’ve probably run into an instance where you needed to change the hostnames on your server to match some corporate naming standard, but you can’t have downtime either.

Changing the Hostname

First, you must change the config file that controls this. The actual file and its location will vary across distributions. In the Redhat derivatives, the file to modify is /etc/sysconfig/network so vi this file and change the line that reads HOSTNAME=

How do I install Installatron on DirectAdmin

The overall Installatron installation process is quite simple and super streamlined for the industry famous Installatron. Simply, follow the step-by-step installation process and you’ll quickly and easily have Installatron installed on your DirectAdmin control panel:

    Login to your DirectAdmin via SSH as root
    From the SSH command prompt run the following line:

        cd /home/ && mkdir installatron && cd installatron &&
        wget http://data1.installatron.com/installatron/installatron_setup.sh &&
        chmod +x installatron_setup.sh &&
        ./installatron_setup.sh –f

cPremote version 6.6 is available now – Compatible with cPanel 11.36

An updated version of cpremote ,  6.6 is available now  for download. This  version is fully compatible with  cPanel version 11.36
Change Log:

        Removed the use of /var/cpanel/3rdparty/bin/php
        Added new  CPPHP support

Upgrade:
It will be automatically upgraded to the  new version. If you like to upgrade it manually, then simply run the cpremote installer in your server.

Add a wild card domain in danginx ( Directadmin Nginx )

By default  danginx won’t include the custom wild card domains. But you can create a vhost configuration as follows. Suppose if you need to create a wild card domain *.foo.com with user name “foo” and document root ” /home/foo/domains/foo.com/public_html and IP 10.0.0.10  ,  then

1)  Create a file name  /etc/danginx/foo.conf with the following content

Vhost configuration of   *foo.com
#################################################################
server {
access_log off;
error_log  logs/vhost-error_log warn;
listen [::]:80;
server_name  *.foo.com;
location ~* ^.+.(jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|iso|doc|xls|exe|pdf|ppt|txt|tar|mid|midi|wav|bmp|rtf|mp3|ogv|ogg|flv|swf|mpeg|mpg|mpeg4|mp4|avi|wmv|js|css)$ {

Nginx And DDOS Protection

cPnginx and Danginx can use  to protect the HTTP DDOS as follows,
Edit the file   /etc/sysctl.conf  and increase the openfile limits. Add the following line,

fs.file-max = 700000

Edit  /etc/security/limits.conf  and add the following  lines,

nobody       soft    nofile  100000
nobody       hard    nofile  500000

Now apply the sysctl configuration using the following command .

# sysctl -p

Enable Cache in cPnginx Servers

You can enable cache in cPnginx. This will decrease the server load. But enabling cache will show the  website updates slowly only. To enable cache please do the following,

1) Modify the file /etc/cpnginx/vhost.conf as follows,
client_max_body_size 10m;
client_body_buffer_size 128k;
proxy_send_timeout   90;
proxy_read_timeout   90;
proxy_buffer_size    4k;
proxy_buffers     16 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;
proxy_connect_timeout 30s;
proxy_cache my-cache;
proxy_cache_valid  200 302  60m;
proxy_cache_valid  404      1m;
proxy_cache_key “$scheme$host$request_uri”;

2) Edit nginx.conf as follows,

Nginx And HttpRealIpModule

This module is already  enabled by default in cPnginx version 6.0 or  higher . You may simply need to add the   module setting in nginx.conf as follows,

set_real_ip_from   $firewall_ip1;
set_real_ip_from   $firewall_ip2;
real_ip_header     X-Real-IP;

You  may also edit  /usr/local/apache/conf/mod_rpaf.conf with the following

RPAFheader X-Real-IP
RPAFheader X-Forwarded-For

These sttings are required for cloudflare clients.

That’s it !!

That’s it !!

See more at: http://datlinux.blogspot.com.es/

How to reset default SSH port for cPanel/WHM

How to change/reset default SSH port on your cPanel servers?

Did you forget SSH port and try to reset it via WHM, Use the following  SSH configuration settings on WHM.

Login to your WHM on a non secure port that is : 2086
For example : http://serverip:2086

Then browse the URL to reset the SSH configuration settings :

http://serverip:2086/scripts2/doautofixer?autofix=safesshrestart

After running the script, the default port 22 will reset on your cpanel SSH configuration. You can login SSH and reset it.

That’s it !!

How to Backup and Restore Individual cPanel Account via SSH

Backing up your hosting account is very necessary for your business to survive on Internet. Whether it is a small or large business, you must backup all of your data regularly at least once a week. cPanel provides some great ready made scripts which will help you make your tasks more easy. Commands such as pkgacct is basically used for backing up cpanel web hosting accounts and restorepkg for restoring cpanel accounts via the SSH or command line interface.

How to create backup of Individual cPanel Account via SSH?

Step 1: Log-in to the SSH as Root user.

Step 2: Enter the following command string on the command line interface:

    /scripts/pkgacct username

[Note: The account backup will be created in the current directory you are in.]

How to Restore the Individual cPanel Account via SSH?

Step 1: To restore the cPanel account backups, enter the following command

    /scripts/restorepkg username

[Note: In order to restore the data, you need to be in the directory where the backup file is stored.]

How to Reset MySQL root Password

To provide multi user  access to number of databases a relation database management system is been developed that runs on a server and called as MySQL. MySQL is developed under GNU General Public License and its source code is available under its defined terms. MySQL is a popular choice of database for use in web applications and it performs really well with cPanel hosting accounts to store data of any websites. And suppose if you have forget the MySQL root password and you are not able to access your mysql service then you need to reset the password of MySQL root user by using following steps which are as follows,

Steps to Reset MySQL root Password :

1)root@server [~]/etc/init.d/mysqld stop

2)Start to MySQL server without password:
root@server [~]mysqld_safe –skip-grant-tables &

3) root@server [~] mysql
After that you can get the mysql prompt then run the following command

4)mysql >use mysql;

5)mysql >update user set password=PASSWORD(“NEWPASSWORD”) where User=’root’;

6)mysql > quit

7)root@server [~]/etc/init.d/mysqld stoproot@server [~]/etc/init.d/mysqld start
Now you can access your mysql service by using
[root@server ~]#mysql -u root -p

How to ban or block an IP address from visiting my website?

You can make use of .htaccess files in order to block an IP address from accessing your website. A .htaccess is a kind of configuration file that can be used from things like setting password-protected directories, preventing the display of file extensions to, of course, restricting access based on IP.

To ban an IP address from accessing your website, create a .htaccess file within your root directory (usually public_html or www) and add the following configuration in the file:

order allow,deny
deny from 127.0.0.1
allow from all

How to Upgrade mod_pagespeed

Inorder to upgrade the mod_pagespeed module, you must first download the latest version and make use of the command “yum localinstall mod-pagespeed-*.rpm” for the purpose of installing http://code.google.com/speed/page-speed/download.html

Use the below commands to upgrade the package :

sudo yum update
sudo /etc/init.d/httpd restart

Simple PHP Script for RBL Checking

It’s useful for ISP’s and email service providers to run occasional RBL checks against their IPs to know when they are being blacklisted by populate CBL services. I’ve written a simple script that utilizes the DNSBL pear library to check against common blacklists, when given a list of IPs in a file.
First, you need to download or install the NET_DNSBL pear module. (Command: pear install NET_DNSBL)

<?php
require_once('Net/DNSBL.php');
$iplist = file("/path/to/iplist");
foreach ($iplist as $ip){
$dnsbl = new Net_DNSBL();
$dnsbl->setBlacklists(array(
'sbl-xbl.spamhaus.org',
'dnsbl.sorbs.net',
'bl.spamcop.net',
'dnsbl-1.uceprotect.net',
'dnsbl-2.uceprotect.net',
'dnsbl-3.uceprotect.net',
'isps.spamblocked.com',
'zen.spamhaus.org'
));
if ($dnsbl->isListed($ip)) {
echo "IP $ip is blacklisted!\n";
}
else {
echo "IP $ip not listed\n";
}
}
?>

This checks your IP's to a RBL listing so you can take appropriate action against abusers.

Exim: remove mails in queue from a particular sender

“spams”, its one of the major issue that a sys admin has to deal with throughout his job.  First you need to find the user who is generating it. You can get it from the mail headers.  Once you find the user, disable the script that was responsible for spams, but it may have already kept thousands(may be lacks) of mails in the exim queue waiting for its chance to get delivered.  To delete these mails one by one is impossible.  In a cPanel server having exim mail,  you can use the following command to delete mails in the current queue generated by that particular user only.

SSH into the server

    exiqgrep -i -f user@domain.com | xargs exim -Mrm

-i print messages id
-f from address
-Mrm remove mails

Remove mails to a particular sender in the queue :-

    exiqgrep -i -t user@domain.com | xargs exim -Mrm

-t to address

How to enable DKIM in cPanel server.

DomainKeys Identified Mail (DKIM) lets an organization take responsibility for a message while it is in transit and one can use this to prevent from getting blacklisted by the free email providers like Yahoo, MSN and Google. DKIM can increase the mail authenticity.

cPanel does not have an interface to enable DKIM like we have for SPF and Domain Keys. cPanel is still working on it for getting it implemented. However we can enable it manually by following the below steps.

Check if exim is compiled with DKIM support enabled.

root@server # /usr/sbin/exim -dd 2>&1 | grep Experimental_DKIM

Support for: crypteq iconv() IPv6 PAM Perl OpenSSL Content_Scanning Old_Demime Experimental_SPF Experimental_SRS
Experimental_DomainKeys Experimental_DKIM

Generate the SSL keys

    cd /usr/local/cpanel/etc/exim

     openssl genrsa -out dkim.key 1024
     openssl rsa -in dkim.key -out dkim.public -pubout -outform PEM

You will find two keys, dkim.key & dkim.public

How do I reset Kloxo (LxAdmin) Admin Password

To reset lxadmin, you can do through SSH with just two commands:

cd /usr/local/lxlabs/lxadmin/httpdocslphp.exe ../bin/common/resetpassword.php master password

How to disable direct root login in your server

1. SSH into your server as root user.

2. Open the ssh configuration file using an editor like Vi

$ vi /etc/ssh/sshd_config

3. Find the line
Protocol 2, 1

4. Uncomment it and change it to look like
Protocol 2

5. Next, find the line

PermitRootLogin yes

6. Uncomment it and make it look like PermitRootLogin no

7. Save the file Ctrl+X then Y then enter

8. Now you can restart SSH
/etc/rc.d/init.d/sshd restart

Now, no one will be able to login to root with out first loggin in as admin and 'su -' to root, and you will be forcing the use of a more secure protocol. Just make sure you remember both passwords!

***If you're using cPanel make sure you add your admin user to the 'wheel' group so that you will be able to 'su -' to root, otherwise you may lock yourself out of root.***

How do I check what version of CentOS

To obtain the version of CentOS your server is running, from command line issue the following:

cat /etc/*release*

Installation of FFMPEG, Mencoder, GPAC for 3gp video conversion server for CentOS

# install dependencies
yum -y install gcc gmake make libcpp libgcc libstdc++ gcc4 gcc4-c++ gcc4-gfortran subversion patch zlib-devel

# get encoding software
cd /usr/local/src

wget http://www3.mplayerhq.hu/MPlayer/releases/codecs/essential-20071007.tar.bz2
wget http://ftp.penguin.cz/pub/users/utx/amr/amrnb-7.0.0.2.tar.bz2
wget http://downloads.sourceforge.net/gpac/gpac-0.4.5.tar.gz

tar xf gpac-0.4.5.tar.gz
tar jxvf amrnb-7.0.0.2.tar.bz2
tar jxvf essential-20071007.tar.bz2

svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg
svn checkout svn://svn.mplayerhq.hu/mplayer/trunk mplayer

# install encoding software

mkdir /usr/local/lib/codecs/
mv /usr/local/src/essential-20071007/* /usr/local/lib/codecs/
chmod -R 755 /usr/local/lib/codecs/
mkdir /usr/local/src/tmp
chmod 777 /usr/local/src/tmp
export TMPDIR=/usr/local/src/tmp

cd /usr/local/src/amrnb-7.0.0.2
./configure
make && make install

cd /usr/local/src/mplayer
svn update
./configure
make && make install

cd /usr/local/src/ffmpeg/
./configure –enable-libamr-nb –disable-mmx –enable-nonfree
make && make install

cd ./gpac
./configure
make && make install

# update library links
echo /usr/local/lib > /etc/ld.so.conf.d/ffmpeg.conf
ldconfig

How do I enable mod_rewrite in Apache2 on Debian?

Enabling mod_rewrite in apache2 is a simple procedure.

Type the following:

a2enmod rewrite

Edit /etc/apache2/sites-available/000-default or it may be called /etc/apache2/sites-available/default

and change the following line:

Options Indexes FollowSymLinks MultiViews
AllowOverride None
Order allow,deny
allow from all

change it to:

Options Indexes FollowSymLinks MultiViews
AllowOverride all
Order allow,deny
allow from all

Lastly, restart apache2:

/etc/init.d/apache2 restart

How to install ZPanel on ubuntu 12.04 x86_64

1) Ensure that you're using a server or VPS with a clean install of Ubuntu 12.04. This tutorial will focus on using Neosurge's VPS hosting solutions.

2) Log into the VPS or server as root.

3) Ensure all system packages are up to date and wait for the update and upgrade has completed by entering the following command:

Installing DomainKeys and SPF Records

DomainKeys (DKIM) and SPF records are becoming a common, and annoying, demand among email providers, mainly Yahoo and Hotmail. In short, both are methods of email authentication designed to verify email integrity, by linking a sender to a specific server or hostname. In other words, DomainKeys and SPF records specify what servers can send email on behalf of a domain name.

You’ll want DomainKeys and SPF records if your users have trouble sending email to certain providers, or they are having issues with spoofed (forged) email. CPanel currently allows two easy ways for you or your users to set up email verification. This is supported at least from cPanel 11.18 onward.

User-Level:

You can enable the “Email Authentication” feature in WHM ~> Feature Manager, which will enable the Email Authentication icon in the users’ cPanels where they can create DomainKeys and SPF records for their domain(s).

Root-level:

How to do Directadmin to Directadmin Migration

The directadmin to directadmin migration is easy.

1) Set the value  skip_domains_in_backups=1  in  /usr/local/directadmin/conf/directadmin.conf . This will skip coping home folder during backup creation.

2) Do to admin panel Admin Tools -> Admin Backup/Transfer , And select all users and run a backup now .This will take all accounts backups under the folder  /home/admin/admin_backups.

3) Now login to the admin panel of the new server and  go to Admin Tools -> Admin Backup/Transfer , then select the  “restore backups “. Chose all the backups files and  click the  submit.

4) Monitor the new server and wait for finishing  the restore. You can check the top comand and  or use pstree. See if the comamnd  dataskq completed or not. Also check the home folders.

5) After finishing it simply rsync the home folders.

Nginx And DDOS Protection

cPnginx and Danginx can use  to protect the HTTP DDOS as follows,
Edit the file   /etc/sysctl.conf  and increase the openfile limits. Add the following line,

fs.file-max = 700000

Edit  /etc/security/limits.conf  and add the following  lines,

nobody       soft    nofile  100000
nobody       hard    nofile  500000

Now apply the sysctl configuration using the following command .

# sysctl -p

Now edit the  /usr/local/nginx/conf/nginx.conf  file  and add the following line.

worker_rlimit_nofile 50000;

1)  Add the following sysctl parameters,
—————
net.ipv4.tcp_syncookies = 1
# source validation / reversed path
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.default.rp_filter = 1
kernel.pid_max = 65536
net.ipv4.ip_local_port_range = 9000 65000
————–

2) Use the  RateLimit module ,   http://wiki.nginx.org/HttpLimitZoneModule   It must be placed inside http block
—————–
limit_zone slimits $binary_remote_addr 10m;
limit_conn slimits 10;
——————

3) You can also use the following too,
—————-
limit_req_zone $binary_remote_addr zone=slimitss:10m rate=1r/s;
limit_req zone=slimitss  burst=10;

How to reset litespeed admin password

Go to the below path

    /usr/local/lsws/admin/misc

run the below command

    sh admpass.sh

It will show below output

    Please specify the user name of administrator.
    This is the user name required to login the administration Web interface.

    User name [admin]: admin

    Please specify the administrator’s password.
    This is the password required to login the administration Web interface.

    Password:
    Retype password:
    Administrator’s username/password is updated successfully!

It will ask for the username type (admin) and password you want to set

How to install WatchMySQL Plugin in WHM

 Installation

Go to the below path

    cd /sbin

Remove the file or take the backup

    rm -f watchmysql

Download watchmysql plugin using the below link

    wget http://www.ndchost.com/cpanel-whm/scripts/watchmysql/download.php

Change the ownership of that file

    chown root.root watchmysql

Change permission of the file.

    chmod 0750 watchmysql

Configuration

Before you run the script you must first configure it. Use edit to open the watchmysql script and set the options.

#Sets the maximum concurrent connections per MySQL user.

    my $max_concurrent_connections = '15';

#Who to tell about this user... (email)

    my $warning_email = 'your@email.address';

#Kill Abuser's MySQL Connections (0 = no, 1 = yes)

    my $kill_user = '0';

#MySQL polling in seconds (600 = 10 minutes)

    my $check_interval = '600';

Running

To start this script simply run the following command

    /sbin/watchmysql &

If you want the script to start when the system boots you need to add the above line to /etc/rc.local

rpm command cheat sheet for Linux

rpm is a powerful Package Manager for Red Hat, Suse and Fedora Linux. It can be used to build, install, query, verify, update, and remove/erase individual software packages. A Package consists of an archive of files, and package information, including name, version, and description:

Syntax	Description	Example(s)
rpm -ivh {rpm-file}	Install the package	rpm -ivh mozilla-mail-1.7.5-17.i586.rpm rpm -ivh –test mozilla-mail-1.7.5-17.i586.rpm
rpm -Uvh {rpm-file}	Upgrade package	rpm -Uvh mozilla-mail-1.7.6-12.i586.rpm rpm -Uvh –test mozilla-mail-1.7.6-12.i586.rpm
rpm -ev {package}	Erase/remove/ an installed package	rpm -ev mozilla-mail
rpm -ev –nodeps {package}	Erase/remove/ an installed package without checking for dependencies	rpm -ev –nodeps mozilla-mail
rpm -qa	Display list all installed packages	rpm -qa rpm -qa | less
rpm -qi {package}	Display installed information along with package version and short description	rpm -qi mozilla-mail
rpm -qf {/path/to/file}	Find out what package a file belongs to i.e. find what package owns the file	rpm -qf /etc/passwd rpm -qf /bin/bash
rpm -qc {pacakge-name}	Display list of configuration file(s) for a package	rpm -qc httpd
rpm -qcf {/path/to/file}	Display list of configuration files for a command	rpm -qcf /usr/X11R6/bin/xeyes
rpm -qa –last	Display list of all recently installed RPMs	rpm -qa –last rpm -qa –last | less
rpm -qpR {.rpm-file} rpm -qR {package}	Find out what dependencies a rpm file has	rpm -qpR mediawiki-1.4rc1-4.i586.rpm rpm -qR bash

How to Install EAccelerator, IonCube, Zend Optimizer, SourceGuardian, and SuHosin outside of EasyApache

You can use /scripts/phpextensionmgr to install or uninstall these modules!

    /scripts/phpextensionmgr list
    Available Extensions:
    EAccelerator
    IonCubeLoader
    Zendopt
    SourceGuardian
    PHPSuHosin

If you wanted to install Zend Optimizer use the below command.

    /scripts/phpextensionmgr install Zendopt
    Installing Zendopt
    Determining PHP version
    Installing Zend Optimizer binary
    Activating Zend Optimizer in /usr/local/lib/php.ini
    Zend Optimizer activated
    Skipping install to /usr/local/php4, missing php.ini

Site is working fine with apache but giving 403 error with litespeed

    =================================
    Error 403: Forbidden

    You don’t have permissions to access this page. This usually means one of the following:
    ===================================

Go to the clients account for which you are getting the error message.

Create a .htaccess file and enter the below lines into it.

    SecFilterEngine Off

    SecFilterScanPOST Off

save and quit

How to reset ssh port through WHM

Login to your WHM using 2086

And then browse the below URL:

    http://serverip:2086/scripts2/doautofixer?autofix=safesshrestart

It will prompt for server password insert it and it will show that port is reset to default(22)

How to install varnish through yum

Download varnish rpm using the below link

    rpm –nosignature -i  http://repo.varnish-cache.org/redhat/el5/noarch/varnish-release-2.1-2.noarch.rpm

run the below command

    yum install varnish

How to uninstall varnish manually

Go to the folder where you have downloaded the tar file.

Go inside apachebooster folder

Provide the below permission to the file.

    chmod 777 uninstall

Run the below command to uninstall it.

    sh uninstall

How to Install varnish manually

Download the tar file from the below link

    wget http://prajith.in/downloads/apachebooster.tar.gz

untar it using the below command.

    tar -xvf apachebooster.tar.gz

go into extracted directory

    cd apachebooster

then fire the below command

    sh install.sh

Install Mhash in php 5.3+ in cPanel Centos Linux servers

The php-mhash installation in php 5.3 is very easy. Please use the following steps to install it
1) Download the latest mhash from   http://mhash.sourceforge.net/ and install it as follows,

# tar -xzf  mhash-0.9.9.9.tar.gz
# ./configure --prefix=/opt/mhash
#  make
#  make install

2) Now add it to the loader configuration in /etc/ld.so.conf.d/mhash.conf

/opt/mhash/lib

3) Now edit the file /var/cpanel/easy/apache/rawopts/all_php5 and add the following line

--with-mhash=/opt/mhash

4) Finally compile the php using the following command

#  /scripts/easyapache --build

You can test the mhash by creating a phpinfo page in your website document root.

How to convert directadmin to SUPHP

Conversion to SUPHP in directadmin is easy. You may please proceed with the following steps

1) Set the following custom build options

/build set php5_cgi yes
./build set php5_cli no

2)Now compile apache and php using the following commands

./build all d
./build rewrite_confs

3) Now need to fix the roundcube , squirrelmail and phpmyadmin permissions as follows,

./build roundcube
./build squirrelmail
./build phpmyadmin

4) Now need to fix the ownership and permission of files and dirs as follows,

# for i in `/bin/ls /usr/local/directadmin/data/users/` ; do chown -R $i.$i /home/$i/domains/* ; echo $i ;done 
# for i in `/bin/ls /usr/local/directadmin/data/users/` ; do find /home/$i/domains/ -type f -exec chmod 644 {} \; ; echo $i ;done
# for i in `/bin/ls /usr/local/directadmin/data/users/` ; do find /home/$i/domains/ -type d -exec chmod 755 {} \; ; echo $i 

This easy steps will help you to conversion your directadmin to suphp and fix the permission issues in your scripts.

CSF Directadmin Issue Permission denied [User:admin UID:501]- Solved

This is a simple permission issue in directadmin. The CSF in directadmin is running a setuid program. So it simply need to enable the  setuid  permission for the root user in this  program.   You may need to look into the following  file ,

# ls -al /usr/local/directadmin/plugins/csf/exec/csf
-rwxr-xr-x 1 root root 8112 Jun 23 10:37 /usr/local/directadmin/plugins/csf/exec/csf

Now you need to enable the “S” bit as follows,

#  chmod  4755  /usr/local/directadmin/plugins/csf/exec/csf
# ll /usr/local/directadmin/plugins/csf/exec/csf 
-rwsr-xr-x 1 root root 8112 Jun 23 10:37 /usr/local/directadmin/plugins/csf/exec/csf

Now login to the directadmin  as admin user and check the CSF page. It must work.

How to install mod_evasive in cPanel server

Please follow the procedure given below to install and configure  mod_evasive in  cPanel server with apache 2.2.

Download the   latest source file from http://www.zdziarski.com

# cd /usr/local/src/
# wget /blog/wp-content/uploads/2010/02/mod_evasive_1.10.1.tar.gz
# tar -xvzf mod_evasive_1.10.1.tar.gz
# cd mod_evasive/
# /usr/local/apache/bin/apxs -cia mod_evasive20.c

Now create a file named  /usr/local/apache/conf/mod_evasive.conf and add the following lines

# cat /usr/local/apache/conf/mod_evasive.conf
LoadModule evasive20_module   modules/mod_evasive20.so
<IfModule mod_evasive20.c>
DOSHashTableSize    3097
DOSPageCount        2
DOSSiteCount        50
DOSPageInterval     1
DOSSiteInterval     1
DOSBlockingPeriod   10
</IfModule>

Now include the above file inside  /usr/local/apache/conf/includes/pre_main_global.conf

Include "/usr/local/apache/conf/mod_evasive.conf"

Now rebuild httpd.conf

/scripts/rebuildhttpdconf

Now restart apache

/scripts/restartsrv httpd

How Do I Restore A MySQL Database?

To restore a MySQL database please follow the below steps:

- Login to your control panel www.yourdomain.com/cpanel
- Click on 'Backups' in 'Site Management'
- Click on 'Browse' to locate the Database you want to restore then click 'Upload'

It may take a while to upload your .sql and populate the database so a broadband connection would help. This will overwrite the database that you currently have up.

Reset Bandwidth Usage In WHM/cPanel

If you run cPanel on your VPS or Dedicated Server and want to reset bandwidth for a particular user or domain then:

1. ssh to your server
2. cd /var/cpanel/bandwidth.cache/
3. vi domainname.com and/or vi username
4. replace contents with 0
5. save and quit

WHM/cPanel should now show 0 for the user/domain in Account Information >> View Bandwidth Usage

How To Reset A Kloxo Or LxAdmin Password From SSH

When your VPS is installed by us with Kloxo or LXadmin the password will 'admin' and the username 'admin' too.
Note: if you reinstall yourself it will also be 'admin'.
If you still can't login then:

1) Login via SSH

2) cd /usr/local/lxlabs/kloxo/httpdocs

or

2) cd /usr/local/lxlabs/lxadmin/httpdocs

3) /usr/bin/lphp.exe  ../bin/common/resetpassword.php master NEWPASSWORD

Now try your password again.

How to force redirection to HTTPS

To force visitors to use HTTPS to access your site via yor SSL certificate is to add the following to the top of a .htaccess file:

RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI}

CentOS - Hostname Change

There are 4 steps in a hostname change, luckily all the steps are easy.

Sysconfig/Network

Open the /etc/sysconfig/network file with your favorite text editor. Modify the HOSTNAME= value to match your FQDN host name.

# sudo nano /etc/sysconfig/network

HOSTNAME=myserver.domain.com

Hosts File

Change the host that is associated to your main IPaddress for your server, this is for internal networking (found at /etc/hosts):

 

Run Hostname

The 'hostname' command will let you change the hostname on the server that the commandline remembers, but it will not actively update all programs that are running under the old hostname.

Restart Networking

At this point all the necessary changes that needed to be made have been made, you will want to restart networking on your server to make sure that changes will be persistent on reboot:

# /etc/init.d/network restart

How to enable SSH/Shell Access in cPanel

Linux distros include SSH client software by default or it can be easily installed with
'apt-get install openssh-client' or 'yum install openssh-clients' depending on your package manager.

To access your shell with SSH from Linux perform the following steps:

1. Login to cPanel and go to Security > SSH/Shell Access to generate SSH key pair.

2. Click Manage SSH Keys > Generate a New Key. You should use a password to protect the key. You will be asked the password each time you use the key.

3. In Public Keys section click 'Manage Authorization' and 'Authorize'

4. In Private Keys section click Vew/Download then download the key (id_dsa or id_rsa) to your PC.

5. Save it to ~/.ssh directory on your linux machine under a meaningful name to not overwrite your existing keys for example id_dsa.myjavahost

6. Now make sure permissions are correct on the key (one time task) and connect (you will be prompted for the password you setup in step #2):

mypc:~$ chmod 600 .ssh/id_dsa.myjavahost
mypc:~$ ssh -p1033 -i .ssh/id_dsa.myjavahost yourusername@yourservername
Enter passphrase for key '.ssh/id_dsa.myjavahost':

You should be logged in now.

How To Create Nagios Plugins With Ruby on CentOS 6

Ruby is a popular programming language that allows you to quickly create scripts and install additional libraries (Gems).

We have previously covered how to install Nagios monitoring server on CentOS 6.
This time, we will expand on this idea and create Nagios plugins using Ruby.
These plugins will be running on client servers, and be executed via NRPE.

Step 1 - Install RPMForge Repository and NRPE on client servers

rpm -ivh http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm
yum -y install ruby nagios-nrpe
useradd nrpe && chkconfig nrpe on

Step 2 - Create your Ruby Script

How to Install zPanel on CentOS 6

About zPanel

---

zPanel is a php-based free control panel for windows, mac, and linux servers. The program runs on top of an Apache, MySQL, PHP stack on whichever platform is used. zPanel should be installed on a fresh server, as all of the programs that zPanel requires are set up automatically through their installation process.

Step One—Download the Zipped Installer File.

LOG INTO YOUR SERVER AS THE ROOT USER, do not use sudo.

1. Download the correct installer for your system:
64 Bit Installer wget http://www.zvps.co.uk/sites/default/files/downloads/centos-6-3/package/installer-x86_64-install.sh.x.tar.gz
Or
32 Bit Installer wget http://www.zvps.co.uk/sites/default/files/downloads/centos-6-3/package/installer-x86-install.sh.x.tar.gz
2. Unzip the tarball

How to Install mod_cloudflare on a cPanel Server

When using CloudFlare, all of the hits to your web server will come from a CloudFlare IP address. To retrieve the actual IP address from the visitor, you must install mod_cloudflare.

How to Install mod_cloudflare

Connect to your server through SSH and log in as root.

Change directory to /usr/local/src :

cd /usr/local/src

Get the source code for mod_cloudflare:

wget --no-check-certificate https://raw.github.com/cloudflare/mod_cloudflare/master/mod_cloudflare.c
CloudFlare-Tools/master/mod_cloudflare.c

Use the Apache Extension Tool to build and install mod_cloudflare:

apxs -a -i -c mod_cloudflare.c

Restart the Apache HTTP daemon:

service httpd restart

Update the Apache configuration data files:

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

That’s it! From now on, Apache will log the visitors’ IP addresses instead of the CloudFlare IP’s.

Free cPanel Nginx automated installer Plugin

 nginx is open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. nginxcp cPanel nginx automated installer Plugin which Turbo boost your cPanel server with low resources usage.

Nginx Admin Install instruction:

cd /usr/local/src

wget http://nginxcp.com/latest/nginxadmin.tar

tar xf nginxadmin.tar

cd publicnginx

./nginxinstaller install

Nginx Admin Uninstall instruction:

cd /usr/local/src

wget http://nginxcp.com/latest/nginxadmin.tar

tar xf nginxadmin.tar

cd publicnginx

./nginxinstaller uninstall

If you get any error message “access key doesn’t exist, Go to WHM >> Cluster/Remote Access >> Setup Remote Access Key
Then click Generate New Key  and then to install it.

Please visit http://nginxcp.com/ for information.

cPanel error mysql database size 0MB

You may see the mysql database size as zero in cPanel >> ‘Mysql Databases’ option, though the databases contains tables and data. In order to include the size of the databases while displaying disk usage in cPanel/WHM, perform either of the following steps:

1.  SSH to your server as root and edit the cpanel.config file

 # vi /var/cpanel/cpanel.config

Search for
disk_usage_include_sqldbs=0

and change to
disk_usage_include_sqldbs=1

If the parameter is not present, add it. Save the file and execute the following command:
# /scripts/update_db_cache

OR

2. Login to the WHM, goto Tweak Settings >> ‘SQL’ section and enable the following option:
When displaying disk usage in cpanel/WHM include Postgresql and MySQL.

This issue was fixed on most of times.

PHP script to find php shells

his is a script written by Karen Chun and published under GPL



<?php
/*    lookforbadguys.php         2012-04-09
Copyright (C)2012 Karen Chun, Steven Whitney.
Initially published by http://25yearsofprogramming.com.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License (GPL)
Version 3 as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

--Purpose: iterate through server files looking for hacker code snippets, backdoor scripts,
suspicious .htaccess code, suspicious file names.
Suspicious things to search for are stored in easily modifiable lists of regular expressions.

--Tested with PHP 5.2 and 5.3. It might work with earlier versions.
--It is designed for use in either Linux or Windows.
On my system, it runs much slower in Windows.

--Not all things it finds are hacks. Not all hacks are found.
--You should also search manually for weird files (such as .php files) in your image directories,
especially if your .htaccess has redirects or was made executable.
--Some searches are commented out because they can give too many false positives.

----------
CHANGELOG:

--2011-03-08 First published

Disable SSH Direct Root Login

First you need to add new admin user

1,adduser admin

2,passwd admin

Please keep admin password

3, vi /etc/group

Make sure admin user wheel settings

wheel:x:10:root,admin

1. SSH into your server as ‘admin’ and gain root access by su

2. Copy and paste this line to edit the file for SSH logins
vi /etc/ssh/sshd_config

3. Find the line
Protocol 2, 1

4. Uncomment it and change it to look like
Protocol 2

5. Next, find the line
PermitRootLogin yes

6. Uncomment it and make it look like PermitRootLogin no

7. Save the file Ctrl+X then Y then enter

8. Now you can restart SSH
/etc/rc.d/init.d/sshd restart

MySQL downgrade on cPanel server

You know downgrades are not recommended, it’s always best to stick with a newer version and work around whatever issues you have but if you really have to downgrade then this way is pretty easy and always works 99% of the time to be honest.

As always make sure you take BACKUPS of your databases and mysql directory before you continue..

Edit /var/cpanel/cpanel.config and look for the mysql-version line and edit the number to whatever version you need i.e.

mysql-version=5.5

to

mysql-version=5.1

Save it and run the following command:

/scripts/mysqlup –force

After this is done – login to your WHM control panel and run easyeapache and rebuild based on your last profile to connect everything back together.

What is Anonymous FTP and how to enable it

Anonymous FTP allows you and others that you give permission to, to access your “public_ftp” folder.

There are two options available:

1. ftp://ftp.yourdomain.com –This allows others to view, delete, upload and download files directly into your “public_ftp” folder.

2. ftp://ftp.yourdomain.com/incoming –This allows others to upload, view, delete, and download files located only within the public_ftp/incoming folder of your hosting account.

Warning: Anonymous FTP allows anyone access to a restricted area of your site. It is generally safest to not enable Anonymous FTP. If you do enable it, you are responsible for the bandwidth and space used.

To set Anonymous FTP access:

Click on the Ftp Manager button on the home page.

Click on the Anonymous FTP Controls link.

Click on the Allow anonymous access to ftp://ftp.yourdomain.com tick box or the Allow anonymous upload to ftp://ftp.yourdomain.com/incoming tick box. You must click on both tick boxes to enable uploads.

Click on the Save Settings button.

Nameserver IPs not showing in WHM

If the nameserver ips not showing in your  WHM >> Main >> DNS Functions >> Nameserver IPs

In order to fix the issue you need to correct the entries for the name server’s IP in the below two files

1. You can check the entries in the /etc/nameserverips file and it should show the below output

root@server [~]# cat /etc/nameserverips
x.x.x.x=ns1.yourdomain.com
x.x.x.x=ns2.yourdomain.com

And if the entries in the above files are correct then,

2. Check the next file it should show the below output

root@server [~]# cat /var/cpanel/nameserverips.yaml
—
ns1.yourdomain.com:
x.x.x.x: 1
count: 1
zones: yourdomain.com
ns2.yourdomain.com:
x.x.x.x: 1
count: 1
zones: yourdomain.com

If the nameserver ip entries are missing in your file then make ip changes and restart named service.

How to install installatron cPanel/WHM

This tutorial will give you the commands to run inside SSH, this will install installatron on a cPanel/WHM dedicated or virtual private server.

Step one: wget http://data1.liquenox.com/installatron/installatron_setup.sh

Step two: chmod 755 installatron_setup.sh

Step three: ./installatron_setup.sh -f

When you now login to WHM, you should see installatron inside your plugins area, you should purchase a license from either us, or direct before you can use it to it's full potential

How to install kloxo (LXAdmin)

This will show you and give you the commands to install kloxo, also known as lxadmin.

First of all run the yum update command, simply copy and paste "yum update -y". (This will update your vps system and operating system)

Step one: wget http://download.lxlabs.com/download/kloxo/production/kloxo-install-master.sh (This will download the installation files)

Step two:  sh ./kloxo-install-master.sh (This will start the install)

Step three:  Reboot your vps with the command "reboot"

Once your server is back online, go to: http://your.ip:7777 (For non ssl) or http://your.ip:7778 (For ssl) use the ssl port for the first login, your default user and password will be set as admin & admin.

Then thats it, all done. 

Just setup your dns zones and domains.

How to install Webmin

Webmin is a more advanced server management control panel, offering apache, php, squid and many more.

This is used upon a virtual private server, or a dedicated server, and is an open source platform, with no charges.

Follow the commands below, to install this.

1) wget http://prdownloads.sourceforge.net/webadmin/webmin-1.510-1.noarch.rpm

2) rpm -Uvh webmin-1.510-1.noarch.rpm

Once these are complete, it should say webmin is now installed, you should then go to either your hostname or ip with the port 1000, for example http://127.0.0.1:10000, you can then login with your root information.

Install Cloudflare cPanel

Got a API code from CloudFlare to be a Partner? But you don't know how to install it? Here is a simple to use tutorial.

log into SSH via Putty, Xshell or another Terminal

Log in as root with your password.

1.) cd /usr/local/cpanel

2.) curl https://www.cloudflare.com/downloads/cloudflare.tar.gz > cloudflare.tar.gz

3.) tar -zxf cloudflare.tar.gz

4.) ls -alh (shows you the files in the folder, look for the cloudflare-CloudFlare-CPanel- numbers/leters file)

eg: cloudflare-CloudFlare-CPanel-d03f3b8 (d03f3b8 would be the Unique ID)

5.) cd cloudflare-CloudFlare-CPanel-UNIQUEID/cloudflare/

6.) ./install_cf [API HOST KEY] mod_cf DeluxeWebs

change [API HOST KEY] with the API you got from CloudFlare. Change DeluxeWebs with your company name.

When finished installing.

7.) cd ../../

8.) rm -rf cloudflare-CloudFlare-CPanel-UNIQUEID

IP remove from Brute Force Attack database by SSH

Sometimes, because of the Brute Force Attack we are unable to login to WHM if we are using correct details also. Then at that time try using below method.

Login to server via SSH.

Connect with mysql database using mysql command. It will show below output.

root@testserver [/var/log]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 172123
Server version: 5.1.65-cll MySQL Community Server (GPL)

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the current input statement.

mysql>

Then type show databases commands in mysql it will show all databases.

mysql> show databases;
+——————–+
| Database |
+——————–+
| information_schema |
| cphulkd |
| eximstats |
| horde |
| leechprotect |
| logaholicDB_test |
| modsec |
| mysql |
| roundcube |
+——————–+
9 rows in set (0.00 sec)

Then go to cphulkd database using below command.

mysql> use cphulkd;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed

Now, it’s time to show tables.

mysql> show tables;
+——————-+
| Tables_in_cphulkd |
+——————-+
| auths |
| blacklist |
| brutes |
| good_logins |
| logins |
| report |
| whitelist |
+——————-+
7 rows in set (0.00 sec)

You can take backup of tables using below command

mysql>BACKUP TABLE `brutes` TO ‘/path/to/backup/directory’;

Run below command to check your IP is blocked in CPHulk Brute Froce database. Replace xxx.xxx.xxx.xxx with your IP

mysql> SELECT * FROM `brutes` WHERE `IP`=’xxx.xxx.xxx.xxx’;

Run below command to remove IP from database

mysql> DELETE FROM `brutes` WHERE `IP`=’xxx.xxx.xxx.xxx’;

Also, check IP in login table also by running the below command

mysql> SELECT * FROM ‘logins’ WHERE ‘IP’ =’xxx.xxx.xxx.xxx’;

Remove the IP from login table using below command.

mysql> DELETE FROM ‘logins’ WHERE ‘IP’ =’xxx.xxx.xxx.xxx’;

OR

You can use below method to clear brutes and login tables. Please note it will remove all the IP’s from database.

Now empty some tables by giving the below commands.

mysql> DELETE FROM brutes;
Query OK, 60 rows affected (0.00 sec)

mysql> DELETE FROM logins;
Query OK, 34 rows affected (0.00 sec)

9 rows in set (0.00 sec)

Unknown License File Version in cpanel : Failed to get a new license, or part of the update process failed

Sometime while accessing WHM, some links are giving below error.
===============================================

Unknown License File Version (has = 23, needed = 22, length=1554). This means that the system failed to get a new license, or part of the update process failed. If you are the server admin,

===============================================
To resolve this issue follow the below steps

/usr/local/cpanel/cpkeyclt

If above commands work then it’s ok but if it is still show above error then follow the below steps

run the below command to stop cpsrvd service

/usr/local/cpanel/etc/init/stopcpsrvd

then sync the files from cpanel server using below command this will fix your issue.

/usr/local/cpanel/scripts/upcp –sync

How to Install mod_pagespeed in cpanel

Login into your server as “root” and start firing the below commands,
  

cd /usr/local/src
mkdir mod_pagespeed
cd mod_pagespeed
wget https://dl-ssl.google.com/dl/linux/direct/mod-pagespeed-stable_current_x86_64.rpm
rpm2cpio mod-pagespeed-stable_current_x86_64.rpm | cpio -idmv
cp /usr/local/src/mod_pagespeed/usr/lib64/httpd/modules/mod_pagespeed.so /usr/local/apache/modules/
cp /usr/local/src/mod_pagespeed/etc/httpd/conf.d/pagespeed.conf /usr/local/apache/conf/
chmod 755 /usr/local/apache/modules/mod_pagespeed.so
mkdir /var/mod_pagespeed/{cache,files} -p
chown nobody:nobody /var/mod_pagespeed/*

mod_pagespeed has a dependency that you’ll want to enable: mod_deflate (the httpd source directory (httpd-2.2.21) may vary depending on your install):

Command to check mod_pagespeed

Command to check mod_pagespeed is installed in server.

curl -D http://127.0.0.1

You will get below output.

Date: Fri, 07 Sep 2012 21:51:06 GMT
Server: Apache/2.2.3 (CentOS)
X-Mod-Pagespeed: 0.10.22.4-1633

How to install magickwand in linux

First go to the path where you want to download the tar file.

cd /usr/local/src/

Use the below link to download the magickwand tar file.

wget http://www.magickwand.org/download/php/MagickWandForPHP-1.0.9.tar.gz

Extract the file using the below command.

 tar -zxvf MagickWandForPHP-1.0.9.tar.gz

Go inside the extracted folder.

cd MagickWandForPHP-1.0.9

Run the below commands to configure and compile it with PHP

phpize
./configure
make
make install

rpm command cheat sheet for Linux

rpm command cheat sheet for Linux

rpm is a powerful Package Manager for Red Hat, Suse and Fedora Linux. It can be used to build, install, query, verify, update, and remove/erase individual software packages. A Package consists of an archive of files, and package information, including name, version, and description:

Syntax	Description	Example(s)
rpm -ivh {rpm-file}	Install the package	rpm -ivh mozilla-mail-1.7.5-17.i586.rpm rpm -ivh –test mozilla-mail-1.7.5-17.i586.rpm
rpm -Uvh {rpm-file}	Upgrade package	rpm -Uvh mozilla-mail-1.7.6-12.i586.rpm rpm -Uvh –test mozilla-mail-1.7.6-12.i586.rpm
rpm -ev {package}	Erase/remove/ an installed package	rpm -ev mozilla-mail
rpm -ev –nodeps {package}	Erase/remove/ an installed package without checking for dependencies	rpm -ev –nodeps mozilla-mail
rpm -qa	Display list all installed packages	rpm -qa rpm -qa | less
rpm -qi {package}	Display installed information along with package version and short description	rpm -qi mozilla-mail
rpm -qf {/path/to/file}	Find out what package a file belongs to i.e. find what package owns the file	rpm -qf /etc/passwd rpm -qf /bin/bash
rpm -qc {pacakge-name}	Display list of configuration file(s) for a package	rpm -qc httpd
rpm -qcf {/path/to/file}	Display list of configuration files for a command	rpm -qcf /usr/X11R6/bin/xeyes
rpm -qa –last	Display list of all recently installed RPMs	rpm -qa –last rpm -qa –last | less
rpm -qpR {.rpm-file} rpm -qR {package}	Find out what dependencies a rpm file has	rpm -qpR mediawiki-1.4rc1-4.i586.rpm rpm -qR bash