Malaysia VMware Communities

I have a OpenSuSE 11 running on my laptop VMware Workstation 6.5.1 recently. During VMware Tools installation, I found a weird error show as below:

“The following VMware kernel modules have been found on your system that were not installed by the VMware Installer. Please remove them then run this installer again.”

vmblock
vmhgfs
vmmemctl
vmxnet

Execution aborted.

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Economy crisis is already happened and impacted to every business around the world. The major impact are really hit to the banking and financial environment. At the same time, I believe that the financial sector are the highest IT spending every year and everywhere around the world to provide service availability to their customer, stock market, and treasury trading.

If we analyze what happen to the IT spending on the financial and banking environment, you will not surprise to see that the amount of storage, servers, solution and unnecessary equipment been under utilized for every bank around the world. The IT department for financial sector had been comfort live for many years and is time now for them to review and revise their IT spending to ensure higher return from their investment.

Open source or reliable LINUX had not been really high utilize in financial sector are really due to the comfort living of their IT department. Personal point of view, why we have to run something else on the expensive IBM AIX, mainframe, HP UX, Microsoft, Oracle VS the reliable LINUX from x86 or x64 platform to perform the same result? The simple answer is really the mindset from the person.
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This is just to share a simple script - “How to find out VM guest MAC address for each VMware ESX” server as below:

## Script START here

#!/bin/bash
#
# Get VM Guest Mac Address - getmacadd.sh
#
# The getmacadd.sh script must run as root on VMware ESX server.
#
# This work is licensed under a Creative Commons License permitting non-commercial sharing with attribution
#
# Change Log:
# 15 Oct 2008 - version 0.1
#

export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin:/root/bin

id_check() {

if [ `id -u` -ne 0 ]
then
echo “You must be root to run this script!”
exit
fi
}

id_check

for COUNT in $(vmware-cmd -l); do
echo `echo $COUNT|awk -F’/’ ‘{print $6}’`
echo ” “`echo $COUNT`
echo ” “`cat $COUNT|grep “displayName”`
#MAC Address may refer to “Address” instead of “generatedAddress”
echo ” “`cat $COUNT|grep “generatedAddress”`
echo
done

## Script END here

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Yesterday Craig mentioned about 8 VCPU per VM on Citrix XenServer 5 is really a good stuff from Citrix and I must admit that.

I did a quick test and I would like to share my personal review about Citrix XenServer 5.0:

Personally I think network speed is fast compare to VMware ESX. I have a physical 1Gbps NIC network speed and I can get 2Gbps network speed after install XenTools on Windows 2008 server but require 2 times reboot(SuSE Linux require 1 reboot). Anyway VM guest shutdown and reboot process is faster than VMware ESX.

I was try to install SuSE Linux 10 using 4 ISO CD (both NFS or CIFS), the Citrix XenServer always give me an error “The VM rejected the attempt to detach the device xxxxx refusing to close” when switch ISO CD1 to ISO CD2. You have to extract 4 ISO CD into one single location to make it work or copy ISO to local storage(provider you have enough local disk space).

The enterprise product should not have similar issue and this is not make sense at all.

Anyway, you can try alternative way using “Install URL” instead of using ISO Image once you have extract ISO CD into single folder on your web server.

Install URL: http://xx.xx.xx.xx/inst/10/32/SP2/ALL
Advanced Boot OS Parameters:
console=ttyS0 xencons=ttyS hostip=xx.xx.xx.xx/24 gateway=xx.xx.xx.xx dnsserver=xx.xx.xx.xx

Please make sure your have correct IP, gateway and DNS setup properly else you will getting error during installation.

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The following article will share how to add new hard disk into SuSE Linux Enterprise Server without reboot.

Follow these steps:

• Create a new LUN and assign to the ESX Server Storage Group on SAN.
• Rescan Storage Adaptors on ESX Server Virtual Infrastructure Console.
• Add new Hard Disk into VM by Edit Setting.
• Open VM Console(SSH will work as well).
• Detect new disk command # rescan-scsi-bus.sh
• Find new disk command # cat /proc/partitions
• Create new partition on the disk command # fdisk /dev/sdx
• Format new disk partition # mkfs.ext3 /dev/sdx1
• Edit /etc/fstab to add in permanent mount point for new disk and partition.
• Mount new disk # mount -a

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