Raj2796's Blog

October 19, 2010

Windows 2008 Vmware Vsphere additional disk issue

Filed under: MS,vmware — raj2796 @ 1:28 pm

All virtual machine disk files (VMDKs) are presented to VMs as SAN disks and Windows 2008 changed how SAN disks were handled, in effect they are offline until you set them online. You will see the “Disk is Offline because policy was set by an administrator” message.

First you need to change how Windows 2008 sees the SAN devices, then you need to clear a readonly flag, then you are good to go. Using ‘diskpart’ enter the following commands

DISKPART> SAN POLICY=OnlineAll
DISKPART> RESCAN
DISKPART> SELECT DISK 1
DISKPART> ATTRIBUTES DISK CLEAR READONLY
DISKPART> ONLINE DISK
DISKPART> CONVERT MBR

Now you can use your normal mechanisms to add, format, etc. the disk into the system.

http://www.astroarch.com/blog/?tag=policy-set-by-administrator

HP Proliant ILO configuration and password recovery

Filed under: Hardware — raj2796 @ 1:04 pm

ILO Setup

ILO – Integrated Lights Out

This is a very cool feature that allows one to manage the server box remotely. Idea is physically you don’t have to be in the data center to manage servers. ILO interface provides exact same interface as you will see when you have connected monitor, keyboard and mouse to each individual server.

Each server comes with default DNS name for ILO web interface (it’s DHCP enabled! so if your network has DHCP IP addresses available, then it will pick up the one for it’s factory default DNS name.)

Default DNS names usually in the pattern ILO
For example serial id for server is HPPRO1234567, then DNS name to access server using ILO would be ILOHPPRO1234567 and it would be available at http://ILOHPPRO1234567

It comes with default administrator user id / password. This user id/password should be changed immediately in order to make your server secure.

http://adyamarathon.files.wordpress.com/2007/09/ilo-login-screen.jpg

Once you login using with given credentials, four tabs that are available for use are: System Status, Remote Console, Virtual Devices, Administration

Change ILO Administrator password
Go to “Administration” -> “User Administration” -> “Select a User” -> “View / Modify” Also if needed you can create more users and give them selective permissions to manage the server using ILO.

How to recover the ILO password
In a worst case scenario where you forgot the user id/ password for ILO login, then only way to reset the password is by connecting physically to the box. Make sure monitor and keyboard is connected to box and boot the machine.

Press F8 to enter into ILO Configuration. Then go to Users -> Modify user and change the ILO admin password which can help to get back to use ILO again.

http://adyamarathon.files.wordpress.com/2007/09/ilo-user-management.jpg

Change the ILO DNS name

* Before you get started, need to get the static ip address and dns name entry configured for this ILO interface.
* Now login to ILO web interface using default dns name (http://DefaultDNSNAME) using default user id/password if that’s not yet changed. let’s say http://ILOHPPRO1234567)
* Click on Administration tab -> settings -> network. Then first disable the DHCP.
* Enter correct values for IP Address, subnet mask and Gateway IP Address that you allocated for new ILO DNS Name in Eman.
* Enter new iLO 2 Subsystem Name

And click on “Apply” to make changes effective. Following message will be displayed :

Please wait – iLO 2 is being reset with new changes. You will automatically be redirected to the login page in 59 seconds. If an SSL error message is displayed, please restart your browser and re-login.

It will logout you in one or two minutes. Or you can open the new browser session and now try to login using new ilo DNS name. For example http://newdnsname and it should redirect to login screen.

Troubleshooting ILO DNS Name

But for some reasons if you haven’t configured ILO dns correctly, then you may not be able to access the ILO web interface. In this case to debug the configuration, you need to connect that machine physically.

Following are steps:

* Connect Monitor to this machine (connect to front port, it’s easy!) and have keyboard connection at the back.
* Power on the machine. Once system start booting… You will see white screen display “HP Proliant Servers ….” After this keep on pressing F8 key to get you into ILO configuration Screen.
* Now go to Network -> DHCP menu
* Make sure DHCP is set to OFF (use spacebar to change the settings)
* Verify ILO name has correct value.
* Now go to Menu Network -> TCP/IP Go to IP Address selection You can’t change these settings if DHCP is ON Update IP Address to new ILP DNS entry. Also Enter correct values for subnet and default getway.

Save the settings (F10) and exit. Now you should be able to login to ILO interface using new dns name like http://newdnsname

Note NIC Mac address

We have connected the server on LAN port 1. Hence note the value of Port 1 NIC MAC address, we will need this value to do the Linux installation using the PXE boot.

Go to tab “System Status” -> “System Information” -> NIC -> Port 1 NIC MAC address

from :
http://adyamarathon.wordpress.com/ilo-setup/

Create a free website or blog at WordPress.com.