Minimum Install VNC Remote Desktop Server on Centos
I wrote an update for an article that i wrote a couple months ago here It's a tutorial to install VNC on Linux Centos VPS. On that tutorial I was installing the group package of Gnome Desktop which will install all Gnome's applications including Open Office. This of course requires a lot of space and RAM resources to be run on a VPS which most of the time we don't need Open Office etc.
My self only use the VNC server that I installed in a VPS located in US datacenter to access some website which only available for US visitors. For browsing purposes I only need Gnome minimum install and Firefox browser and that is what I installed on this tutorial.
You can read my tutorial here: Minimum Install VNC Remote Desktop Server on Centos
This is why there are 32 bit packages on 64 bit Linux Centos
I just installed a new server with Linux Centos 64 bit installed and noticed that actually some 32 bit packages was also installed when I'm running yum upgrade. There was nothing wrong in YUM configuration that I can find.
It turns out that the reason for those 32 bit packages being installed is that Centos follow the upstream source, hence the 64 bit (x86_64) installation by default will also install 32 bit packages. Since I want to have pure 64 bit system then I remove all 32 bit packages that installed on my server and set the exclude option so that 32 bit will not installed by yum command.
To remove all 32 bit packages run the command:
Modify the Maximum Emails a Domain Can Send per Hour
On Cpanel’s Tweak Settings you can limit the maximum each domain can send out per hour. The problem is that this limit also applies to Mailman mailing list hence causing problem for mailing list owners.
The problem happen when the mailing list has members more than the maximum number of email a domain can send per hour. Once the mailing list hit the max limit, the emails start to be bounced back or dropped by Exim from its queue.
To fix this problem administrator can set a limit for a specific domain on the server by modifying /var/cpanel/maxemails file and add the domain that want its limit to be override:
domain.com=120 domain.net=500
Then run /scripts/build_maxemails_config to apply the new limit.
Installing suPHP on Centos 5
suPHP is a tool that allows PHP scripts to be executed with the permissions of their owners. By not running PHP script using web server’s user rights, suPHP increase the server security.
First install httpd-devel and compiler tools:
yum install httpd-devel gcc gcc-c++ make
Install rTorrent Using CURL in Different Path on Centos Linux
After I posted an article titled "Installing libTorrent and rTorrent on Linux Centos" one of my reader have a concern about dependencies as Centos already have older Curl installed by default.
One way to avoid dependencies problem with Curl is by compiling the newest version to another directory and then compile rTorrent to use that Curl installation and not the old Curl installed by default on Centos. Below is the step-by-step how to install rTorrent with Curl installed in another directory:
Installing libTorrent and rTorrent on Linux Centos
As requested by one of my blog reader, I write this libTorrent and rTorrent installation tutorial 
I’m installing libTorrent and rTorrent on a Xen based VPS with Linux Centos 5.4
From the project’s website:
LibTorrent is a BitTorrent library written in C++ for *nix, with a focus on high performance and good code. The library differentiates itself from other implementations by transfering directly from file pages to the network stack. On high-bandwidth connections it is able to seed at 3 times the speed of the official client.
To install libTorrent and rTorrent first we install the compiler and dependencies required
Installing Gnome and VNC Remote Desktop on Centos VPS
After writing a how-to on installing Gnome and VNC server on Ubuntu Linux, this time I blog on the same tutorial but now I use Centos 5.3 Linux.
It’s almost similar with Ubuntu, but on Centos we use YUM instead of apt-get command. Both package managers have its own fans, nevertheless both yum and apt-get deliver an easy to use package installer.
To read the how-to please go to: http://www.talk.web.id/2009/08/installing-vnc-remote-desktop-on-centos-vps/ as I write it for Talk Web ID. If you like the tutorial or have questions, please write on the comment box.
error: kernel image does not exist: /boot/hypervm-xen-vmlinuz
If you have a CentOS Xen Dom0 and experiencing this problem "error: kernel image does not exist: /boot/hypervm-xen-vmlinuz" after upgrading Xen kernel on HyperVM based VPS, here is how to fix it: