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Showing posts from April, 2011

How to install or configure Xen(Linux virtualization package)

Xen is the most famous virtualization package used in the world today, it is very powerfull and quite simple also. It can do almost all the virtualization work needed according to industry standards, It is used in clustering ,cloud computing etc...

To install it by yum use the following commands
#yum install kernel-xen virt-manager              //kernel-xen is used to install Xen kernel, virt-manager is used to give gui mode to perform all the virtualization tasks

To install it by GUI mode follow this sequence
application-> add remove hardware-> virtualization-> optional packages-> apply

After performing these tasks we have to make the xen kernel as our default kernel so tha next time when we boot the system it runs on the xen kernel. To do the virtualization we need to have the linux kernel running.so follow these steps.

#vi /etc/grub.conf
do the following changes in the file
default=0

wq!          //write and quite the file

Reboot the system so that xen kernel can be boo…

How to configure cluster using Conga for redhat

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The setup of conga was told in the earlier posts in this we will configure conga for our two systems which i am using as test cases.
First of all your two systems should be able to ping each other by there host names and ricci service should be started on each node of the system which you want to add in the cluster.

After this follow the following procedure and you should be easily able to configure a cluster..

open your luci in web browser and enter the username and password


This is the main screen after you log in the luci

Select add as system to add systems in the cluster

Add the system name and password of the systems you want to add in the cluster

Submit the systems and after that confirm it by clicking OK

In the manage systems you can see that your system are properly added or not, as in example given by both the systems added by me are shown in the bottom.

Go to cluster and select create a New Cluster

Enter the name of the cluster you want to create, add the hostnames of the systems w…

How to create Network bonding in Openfiler

Openfiler is an OS which can easily bond the network interfaces with each other so that multiple NIC cards of the storage can have a single IP. The main use of this is that our multiple NIC cards can have single IP and in case of any failure in any of the NIC card we can still access our storage in smooth form, we don't have to assign IP again to storage if there is any card problem.

Go to systemSelect bonded interfacecheck the N/W cards you want to bond togetherContinueGive a new IPIPNetworkActive Back UpNo preference Restart the network on the terminal of Openfiler.

Intoduction about Openfiler

Openfiler is one of the best storage OS available in world today, it gives GUI tool to form SAN/NAS (storage area network/network area network). It can also configure raid of any version.The LUN(logical unit no) can be created by it, the best thing about this storage OS is the it is open source and absolutely free.
For test environment it is best, as it can do all the work done by the paid storage systems also if there is any problem regarding storage it can full fill that..