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Canadian Web Hosting rolls out Xenserver VM/VPS Virtualization Hosting

We have completed our testing on Xenserver virtualization and have already deployed several servers. We are still working on our backend to include xenserver hosting packages and should be ready in these couple of weeks.

Our next step is to test Fail Over service for Xen and should be complete by June. Look for more updates in the future!

Manage Windows Firewall on VPS from command prompt

To Manage Windows Firewall on a VPS node from command prompt

1. Login to the hardware node.

2. On Command prompt, run the following commands.
>> vzlist -a ... to list the nodes

>> vzctl enter <veid> ....to enter vps node

3. On the VPS node,

To enable firewall...

>> netsh firewall set opmode mode=ENABLE

To Disable firewall..

>> netsh firewall set opmode mode=DISABLE

Local Root Exploit in Multiple Versions of Linux Kernels

All security websites are reporting that there is a script that will allow non-root users with ssh2 access to obtain full access to the system.

http://www.securityfocus.com/bid/27704/info

http://it.slashdot.org/it/08/02/10/2011257.shtml

All our servers were patched this morning and restarted. According to Redhat bugzilla, it only affected servers running Redhat 5. Servers on Redhat 4 were not affected.

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2008-0600

This is considered a very severe exploit.

If you have other servers and want to check if you're vulnerable, do the following in shell:

grep -ri vmsplice /boot/System.map-$(uname -r)

if it returns nothing = not vulnerable
if it returns something like: c048fdf7 T sys_vmsplice = vulnerable

Kevin Liang
CTO / SEO Guru
Canadian Web Hosting
http://www.canadianwebhosting.com/

Installing Ruby on Rails in Cpanel

cPanel 11 Stage 2 (currently in the most recent RELEASE build) have RoR functionality, including Rails and Gems options on cpanel.

Note: For RoR, Apache must have mod_proxy support.

How To Install Ruby on a cpanel Server

/scripts/installruby

How TO Install And Setup Gems

Ruby Gems are collections of functions that allow you to perform tasks in Ruby. You will need to install a Gem before you can use it inside a Ruby program.

Note: Current cpanel version has some bugs or issue with Gem Setup. We may sometimes need to configure Gems and Rails from command line.