Few tools that are handy while working on virtualization

August 10, 2009

ISO Image

Disk images of ISO 9660 file systems (ISO images) are a common way to electronically transfer the contents of CD-ROMs/DVDs. They often have the filename extension .iso (though not necessarily), and are thus commonly referred to as ISOs.

You can boot your VMs directly from ISO image without using cds/dvds. you may find winiso, power iso and deamon tools very handy to work out with iso files.

Telnet /SSH

WinSCP and Putty are cool tool that allows Windows machines SSH access to ESX systems. WinSCP tool is very intuitive and familiar looking if you use Norton Commander or Windows Explorer. We use this tool for transferring ISO images and other files such as .flp (floppy images) onto our ESX Server. Putty is used to telnet host without going to data centre to log on to host from console.

Changing SID

NewSID is a free tool. You need to run this tool if you clone template virtual machines. When you run it you can select a random SID.  you will be given the option to reboot the computer after the new SID is applied. The SID will then be applied to the virtual machine. After the VM reboots, you shouldn’t run into any issues regarding SID or name problems.

VM Backup

Veeam ESX backup is a nice tool to backup ESX host. You will get free version and purchased version of Veeam backup.

ESX tools

There are lots ESX third party tools available to make your task easy and comfortable. Among them, I used SolarWinds ESX monitoring tools, Vizioncore vRanger and VMTS tools.

You may google and find heaps freeware that works same as purchased version of application.


Security Banners on the ESX Host Local Console

August 10, 2009

1. Login into the Vi Client
2. Select the Configuration Tab, and in the Software pane choose
Advanced Settings
3. Select the Annotations option, in the corresponding edit field type in
your banner such as:

WARNING: Do not attempt to login unless you are a delegated user or system admin.

4. To force this text to be updated
5. Login to the Initial Setup screen and then logout. This will force the
ESX3i host to reparse the Advanced Settings


Resetting a lost root password for ESX host

August 10, 2009

If you are new systems administrator in your organisation and you need to log on the console of ESX Host. Previous systems admin didn’t left any documentation what’s so ever. Here is the way to reset root password.

1. Restart the ESX host
2. At the main bootloader screen where it states “Press Tab to toggle
verbose mode” – press shift+O
Note:
This is O for orange on the keyboard, not 0 for zero on the keyboard. This
enters the “Enter Advanced Options” session
3. Type the option passwdReset=TRUE
Note:
Advanced options piped to the interactive shell like this are case-sensitive.


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