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.